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class="astro-3ii7xxms"><a href="https://developers-cloudflare-com.translate.goog/support/third-party-software/others/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="false" class="astro-3ii7xxms" data-group-label="Others"> <span class="astro-3ii7xxms">Overview</span> </a></li> <li class="astro-3ii7xxms"><a href="https://developers-cloudflare-com.translate.goog/support/third-party-software/others/configure-cloudflare-and-heroku-over-https/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="false" class="astro-3ii7xxms"> <span class="astro-3ii7xxms">Configure Cloudflare and Heroku over HTTPS</span> </a></li> </ul> </details></li> </ul> </details></li> <li class="astro-3ii7xxms"> <details open class="astro-3ii7xxms"><sl-sidebar-restore data-index="5"></sl-sidebar-restore> <summary class="astro-3ii7xxms"> <div class="group-label astro-3ii7xxms"><span class="large astro-3ii7xxms">Troubleshooting</span> </div> <svg aria-hidden="true" class="caret astro-3ii7xxms astro-c6vsoqas" 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href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/cloudflare-errors/troubleshooting-cloudflare-1xxx-errors/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="false" class="astro-3ii7xxms"> <span class="astro-3ii7xxms">Troubleshooting Cloudflare 1XXX errors</span> </a></li> <li class="astro-3ii7xxms"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/cloudflare-errors/troubleshooting-cloudflare-5xx-errors/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="false" class="astro-3ii7xxms"> <span class="astro-3ii7xxms">Troubleshooting Cloudflare 5XX errors</span> </a></li> <li class="astro-3ii7xxms"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/cloudflare-errors/troubleshooting-other-errors/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="false" class="astro-3ii7xxms"> <span class="astro-3ii7xxms">Troubleshooting other errors</span> </a></li> </ul> </details></li> <li class="astro-3ii7xxms"> <details open class="astro-3ii7xxms"><sl-sidebar-restore data-index="16"></sl-sidebar-restore> <summary class="astro-3ii7xxms"> <div class="group-label astro-3ii7xxms"><span class="large astro-3ii7xxms">General Troubleshooting</span> </div> <svg aria-hidden="true" class="caret astro-3ii7xxms astro-c6vsoqas" width="16" height="16" viewbox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"> <path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z" /> </svg></summary> <ul class="astro-3ii7xxms"> <li class="astro-3ii7xxms"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="false" class="astro-3ii7xxms" data-group-label="General Troubleshooting"> <span class="astro-3ii7xxms">Overview</span> </a></li> <li class="astro-3ii7xxms"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="page" class="astro-3ii7xxms"> <span class="astro-3ii7xxms">Gathering information for troubleshooting sites</span> </a></li> <li class="astro-3ii7xxms"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/troubleshooting-crawl-errors/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="false" class="astro-3ii7xxms"> <span class="astro-3ii7xxms">Troubleshooting crawl errors</span> </a></li> </ul> </details></li> <li class="astro-3ii7xxms"> <details class="astro-3ii7xxms"><sl-sidebar-restore data-index="17"></sl-sidebar-restore> <summary class="astro-3ii7xxms"> <div class="group-label astro-3ii7xxms"><span class="large astro-3ii7xxms">HTTP Status Codes</span> </div> <svg aria-hidden="true" class="caret astro-3ii7xxms astro-c6vsoqas" width="16" height="16" viewbox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"> <path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z" /> </svg></summary> <ul class="astro-3ii7xxms"> <li class="astro-3ii7xxms"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/http-status-codes/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="false" class="astro-3ii7xxms" data-group-label="HTTP Status Codes"> <span class="astro-3ii7xxms">Overview</span> </a></li> <li class="astro-3ii7xxms"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/http-status-codes/1xx-informational/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="false" class="astro-3ii7xxms"> <span class="astro-3ii7xxms">1xx Informational</span> </a></li> <li class="astro-3ii7xxms"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/http-status-codes/2xx-success/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="false" class="astro-3ii7xxms"> <span class="astro-3ii7xxms">2xx Success</span> </a></li> <li class="astro-3ii7xxms"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/http-status-codes/3xx-redirection/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="false" class="astro-3ii7xxms"> <span class="astro-3ii7xxms">3xx Redirection</span> </a></li> <li class="astro-3ii7xxms"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/http-status-codes/4xx-client-error/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="false" class="astro-3ii7xxms"> <span class="astro-3ii7xxms">4xx Client Error</span> </a></li> <li class="astro-3ii7xxms"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/http-status-codes/http-status-codes/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="false" class="astro-3ii7xxms"> <span class="astro-3ii7xxms">HTTP Status Codes</span> </a></li> </ul> </details></li> <li class="astro-3ii7xxms"> <details class="astro-3ii7xxms"><sl-sidebar-restore data-index="18"></sl-sidebar-restore> <summary class="astro-3ii7xxms"> <div class="group-label astro-3ii7xxms"><span class="large astro-3ii7xxms">Restoring Visitor IPs</span> </div> <svg aria-hidden="true" class="caret astro-3ii7xxms astro-c6vsoqas" width="16" height="16" viewbox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"> <path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z" /> </svg></summary> <ul class="astro-3ii7xxms"> <li class="astro-3ii7xxms"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/restoring-visitor-ips/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="false" class="astro-3ii7xxms" data-group-label="Restoring Visitor IPs"> <span class="astro-3ii7xxms">Overview</span> </a></li> <li class="astro-3ii7xxms"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/restoring-visitor-ips/restoring-original-visitor-ips/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="false" class="astro-3ii7xxms"> <span class="astro-3ii7xxms">Restoring original visitor IPs</span> </a></li> </ul> </details></li> <li class="astro-3ii7xxms"> <details class="astro-3ii7xxms"><sl-sidebar-restore data-index="19"></sl-sidebar-restore> <summary class="astro-3ii7xxms"> <div class="group-label astro-3ii7xxms"><span class="large astro-3ii7xxms">Disruptive Maintenance</span> </div> <svg aria-hidden="true" class="caret astro-3ii7xxms astro-c6vsoqas" width="16" height="16" viewbox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"> <path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z" /> </svg></summary> <ul class="astro-3ii7xxms"> <li class="astro-3ii7xxms"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/disruptive-maintenance/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" aria-current="false" class="astro-3ii7xxms" data-group-label="Disruptive Maintenance"> <span class="astro-3ii7xxms">Overview</span> </a></li> </ul> </details></li> </ul> </details></li> </ul> <script aria-hidden="true"> (() => { const scroller = document.getElementById('starlight__sidebar'); if (!window._starlightScrollRestore || !scroller) return; scroller.scrollTop = window._starlightScrollRestore; delete window._starlightScrollRestore; })(); </script> </sl-sidebar-state-persist> <div class="md:sl-hidden"> <div class="mobile-preferences sl-flex 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text-[--sl-color-text] font-medium astro-r3tjzkat"> <span class="astro-r3tjzkat">Support</span> </a><a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://dash.cloudflare.com" class="px-4 no-underline text-[--sl-color-text] font-medium astro-r3tjzkat"> <span class="astro-r3tjzkat">Log in</span> </a> </div><a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://github.com/cloudflare/cloudflare-docs" rel="me" class="sl-flex astro-wy4te6ga"><span class="sr-only astro-wy4te6ga">GitHub</span> <svg aria-hidden="true" class="astro-wy4te6ga astro-c6vsoqas" width="16" height="16" viewbox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1em;"> <path d="M12 .3a12 12 0 0 0-3.8 23.38c.6.12.83-.26.83-.57L9 21.07c-3.34.72-4.04-1.61-4.04-1.61-.55-1.39-1.34-1.76-1.34-1.76-1.08-.74.09-.73.09-.73 1.2.09 1.83 1.24 1.83 1.24 1.08 1.83 2.81 1.3 3.5 1 .1-.78.42-1.31.76-1.61-2.67-.3-5.47-1.33-5.47-5.93 0-1.31.47-2.38 1.24-3.22-.14-.3-.54-1.52.1-3.18 0 0 1-.32 3.3 1.23a11.5 11.5 0 0 1 6 0c2.28-1.55 3.29-1.23 3.29-1.23.64 1.66.24 2.88.12 3.18a4.65 4.65 0 0 1 1.23 3.22c0 4.61-2.8 5.63-5.48 5.92.42.36.81 1.1.81 2.22l-.01 3.29c0 .31.2.69.82.57A12 12 0 0 0 12 .3Z" /> </svg></a><a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://x.com/cloudflare" rel="me" class="sl-flex astro-wy4te6ga"><span class="sr-only astro-wy4te6ga">X</span> <svg aria-hidden="true" class="astro-wy4te6ga astro-c6vsoqas" width="16" height="16" viewbox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1em;"> <path d="M 18.242188 2.25 L 21.554688 2.25 L 14.324219 10.507812 L 22.828125 21.75 L 16.171875 21.75 L 10.953125 14.933594 L 4.992188 21.75 L 1.679688 21.75 L 9.40625 12.914062 L 1.257812 2.25 L 8.082031 2.25 L 12.792969 8.480469 Z M 17.082031 19.773438 L 18.914062 19.773438 L 7.082031 4.125 L 5.113281 4.125 Z M 17.082031 19.773438 " /> </svg></a><a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://www.youtube.com/cloudflare" rel="me" class="sl-flex astro-wy4te6ga"><span class="sr-only astro-wy4te6ga">YouTube</span> <svg aria-hidden="true" class="astro-wy4te6ga astro-c6vsoqas" width="16" height="16" viewbox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1em;"> <path d="M23.5 6.2A3 3 0 0 0 21.4 4c-1.9-.5-9.4-.5-9.4-.5s-7.5 0-9.4.5A3 3 0 0 0 .5 6.3C0 8 0 12 0 12s0 4 .5 5.8A3 3 0 0 0 2.6 20c1.9.6 9.4.6 9.4.6s7.5 0 9.4-.6a3 3 0 0 0 2.1-2c.5-2 .5-5.9.5-5.9s0-4-.5-5.8zm-14 9.4V8.4l6.3 3.6-6.3 3.6z" /> </svg></a> </div><starlight-theme-select> <label style="--sl-select-width: 6.25em" class="astro-4yphtoen"> <span class="sr-only astro-4yphtoen">Select theme</span> <svg aria-hidden="true" class="icon label-icon astro-4yphtoen astro-c6vsoqas" width="16" height="16" viewbox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1em;"> <path d="M21 14h-1V7a3 3 0 0 0-3-3H7a3 3 0 0 0-3 3v7H3a1 1 0 0 0-1 1v2a3 3 0 0 0 3 3h14a3 3 0 0 0 3-3v-2a1 1 0 0 0-1-1ZM6 7a1 1 0 0 1 1-1h10a1 1 0 0 1 1 1v7H6V7Zm14 10a1 1 0 0 1-1 1H5a1 1 0 0 1-1-1v-1h16v1Z" /> </svg><select value="auto" autocomplete="off" class="astro-4yphtoen"> <option value="dark" class="astro-4yphtoen">Dark</option><option value="light" class="astro-4yphtoen">Light</option><option value="auto" selected class="astro-4yphtoen">Auto</option> </select> <svg aria-hidden="true" class="icon caret astro-4yphtoen astro-c6vsoqas" width="16" height="16" viewbox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1em;"> <path d="M17 9.17a1 1 0 0 0-1.41 0L12 12.71 8.46 9.17a1 1 0 1 0-1.41 1.42l4.24 4.24a1.002 1.002 0 0 0 1.42 0L17 10.59a1.002 1.002 0 0 0 0-1.42Z" /> </svg></label> </starlight-theme-select> <script> StarlightThemeProvider.updatePickers(); </script> </div> </div> </div> </div> </nav> <div class="main-frame astro-vrdttmbt"> <script type="module">const 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<style>astro-island,astro-slot,astro-static-slot{display:contents}</style> <script>(()=>{var l=(n,t)=>{let i=async()=>{await(await n())()},e=typeof t.value=="object"?t.value:void 0,s={timeout:e==null?void 0:e.timeout};"requestIdleCallback"in window?window.requestIdleCallback(i,s):setTimeout(i,s.timeout||200)};(self.Astro||(self.Astro={})).idle=l;window.dispatchEvent(new Event("astro:idle"));})();;(()=>{var A=Object.defineProperty;var g=(i,o,a)=>o in i?A(i,o,{enumerable:!0,configurable:!0,writable:!0,value:a}):i[o]=a;var d=(i,o,a)=>g(i,typeof o!="symbol"?o+"":o,a);{let i={0:t=>m(t),1:t=>a(t),2:t=>new RegExp(t),3:t=>new Date(t),4:t=>new Map(a(t)),5:t=>new Set(a(t)),6:t=>BigInt(t),7:t=>new URL(t),8:t=>new Uint8Array(t),9:t=>new Uint16Array(t),10:t=>new Uint32Array(t),11:t=>1/0*t},o=t=>{let[l,e]=t;return l in i?i[l](e):void 0},a=t=>t.map(o),m=t=>typeof t!="object"||t===null?t:Object.fromEntries(Object.entries(t).map(([l,e])=>[l,o(e)]));class y extends HTMLElement{constructor(){super(...arguments);d(this,"Component");d(this,"hydrator");d(this,"hydrate",async()=>{var b;if(!this.hydrator||!this.isConnected)return;let e=(b=this.parentElement)==null?void 0:b.closest("astro-island[ssr]");if(e){e.addEventListener("astro:hydrate",this.hydrate,{once:!0});return}let c=this.querySelectorAll("astro-slot"),n={},h=this.querySelectorAll("template[data-astro-template]");for(let r of h){let s=r.closest(this.tagName);s!=null&&s.isSameNode(this)&&(n[r.getAttribute("data-astro-template")||"default"]=r.innerHTML,r.remove())}for(let r of c){let s=r.closest(this.tagName);s!=null&&s.isSameNode(this)&&(n[r.getAttribute("name")||"default"]=r.innerHTML)}let p;try{p=this.hasAttribute("props")?m(JSON.parse(this.getAttribute("props"))):{}}catch(r){let s=this.getAttribute("component-url")||"<unknown>",v=this.getAttribute("component-export");throw v&&(s+=` (export ${v})`),console.error(`[hydrate] Error parsing props for component ${s}`,this.getAttribute("props"),r),r}let u;await this.hydrator(this)(this.Component,p,n,{client:this.getAttribute("client")}),this.removeAttribute("ssr"),this.dispatchEvent(new CustomEvent("astro:hydrate"))});d(this,"unmount",()=>{this.isConnected||this.dispatchEvent(new CustomEvent("astro:unmount"))})}disconnectedCallback(){document.removeEventListener("astro:after-swap",this.unmount),document.addEventListener("astro:after-swap",this.unmount,{once:!0})}connectedCallback(){if(!this.hasAttribute("await-children")||document.readyState==="interactive"||document.readyState==="complete")this.childrenConnectedCallback();else{let e=()=>{document.removeEventListener("DOMContentLoaded",e),c.disconnect(),this.childrenConnectedCallback()},c=new MutationObserver(()=>{var n;((n=this.lastChild)==null?void 0:n.nodeType)===Node.COMMENT_NODE&&this.lastChild.nodeValue==="astro:end"&&(this.lastChild.remove(),e())});c.observe(this,{childList:!0}),document.addEventListener("DOMContentLoaded",e)}}async childrenConnectedCallback(){let e=this.getAttribute("before-hydration-url");e&&await import(e),this.start()}async start(){let e=JSON.parse(this.getAttribute("opts")),c=this.getAttribute("client");if(Astro[c]===void 0){window.addEventListener(`astro:${c}`,()=>this.start(),{once:!0});return}try{await Astro[c](async()=>{let n=this.getAttribute("renderer-url"),[h,{default:p}]=await Promise.all([import(this.getAttribute("component-url")),n?import(n):()=>()=>{}]),u=this.getAttribute("component-export")||"default";if(!u.includes("."))this.Component=h[u];else{this.Component=h;for(let f of u.split("."))this.Component=this.Component[f]}return this.hydrator=p,this.hydrate},e,this)}catch(n){console.error(`[astro-island] Error hydrating ${this.getAttribute("component-url")}`,n)}}attributeChangedCallback(){this.hydrate()}}d(y,"observedAttributes",["props"]),customElements.get("astro-island")||customElements.define("astro-island",y)}})();</script> <div class="lg:sl-hidden astro-pb3aqygn"> <mobile-starlight-toc data-min-h="2" data-max-h="3" class="astro-doynk5tl"> <nav aria-labelledby="starlight__on-this-page--mobile" class="astro-doynk5tl"> <details id="starlight__mobile-toc" class="astro-doynk5tl"> <summary id="starlight__on-this-page--mobile" class="sl-flex astro-doynk5tl"> <div class="toggle sl-flex astro-doynk5tl"> On this page <svg aria-hidden="true" class="caret astro-doynk5tl astro-c6vsoqas" width="16" height="16" viewbox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1rem;"> <path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z" /> </svg> </div><span class="display-current astro-doynk5tl"></span></summary> <div class="dropdown astro-doynk5tl"> <ul class="isMobile astro-g2bywc46" style="--depth: 0;"> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#_top" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Overview</span> </a></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#overview" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Overview</span> </a></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#generate-a-har-file" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Generate a HAR file</span> </a> <ul class="isMobile astro-g2bywc46" style="--depth: 1;"> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-chrome" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Chrome</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-firefox" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Firefox</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-microsoft-edge" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Microsoft Edge</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-safari" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Safari</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-mobile" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Mobile</span> </a></li> </ul></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#export-console-log" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Export Console Log</span> </a> <ul class="isMobile astro-g2bywc46" style="--depth: 1;"> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-chrome-1" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Chrome</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-firefox-1" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Firefox</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-microsoft-edge-1" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Microsoft Edge</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-safari-1" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Safari</span> </a></li> </ul></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#capture-a-netlog-dump" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Capture a NetLog dump</span> </a></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#identify-the-cloudflare-data-center-serving-your-request" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Identify the Cloudflare data center serving your request</span> </a></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#troubleshoot-requests-with-curl" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Troubleshoot requests with curl</span> </a> <ul class="isMobile astro-g2bywc46" style="--depth: 1;"> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#http-errors" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">HTTP errors</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#performance" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">Performance</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#caching" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">Caching</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#ssltls-certificates" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">SSL/TLS certificates</span> </a></li> </ul></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#temporarily-pause-cloudflare" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Temporarily pause Cloudflare</span> </a></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#perform-a-traceroute" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Perform a traceroute</span> </a> <ul class="isMobile astro-g2bywc46" style="--depth: 1;"> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#run-traceroute-on-windows" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">Run traceroute on Windows</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#run-traceroute-on-linux" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">Run traceroute on Linux</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#run-traceroute-on-mac-os" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">Run traceroute on Mac OS</span> </a></li> </ul></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#add-the-cf-ray-header-to-your-logs" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Add the CF-RAY header to your logs</span> </a> <ul class="isMobile astro-g2bywc46" style="--depth: 1;"> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#for-apache-web-servers-add-cf-rayi-to-logformat" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">For Apache web servers, add %{CF-Ray}i to LogFormat</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#for-nginx-web-servers-add-http_cf_ray-to-log_format" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">For Nginx web servers, add '$http_cf_ray' to log_format</span> </a></li> </ul></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#perform-a-mtr" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Perform a MTR</span> </a> <ul class="isMobile astro-g2bywc46" style="--depth: 1;"> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#how-do-i-use-mtr-to-generate-network-path-report" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">How do I use MTR to generate network path report?</span> </a></li> </ul></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#run-packet-captures" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Run Packet Captures</span> </a></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#related-resources" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Related resources</span> </a></li> </ul> </div> </details> </nav> </mobile-starlight-toc> <script type="module" src="/_astro/MobileTableOfContents.astro_astro_type_script_index_0_lang.CwvHEPnB.js"></script> </div> <div class="right-sidebar-panel sl-hidden lg:sl-block astro-pb3aqygn"> <div class="sl-container astro-pb3aqygn"> <starlight-toc data-min-h="2" data-max-h="3"> <nav aria-labelledby="starlight__on-this-page"> <h2 id="starlight__on-this-page">On this page</h2> <ul class="astro-g2bywc46" style="--depth: 0;"> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#_top" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Overview</span> </a></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#overview" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Overview</span> </a></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#generate-a-har-file" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Generate a HAR file</span> </a> <ul class="astro-g2bywc46" style="--depth: 1;"> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-chrome" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Chrome</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-firefox" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Firefox</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-microsoft-edge" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Microsoft Edge</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-safari" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Safari</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-mobile" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Mobile</span> </a></li> </ul></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#export-console-log" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Export Console Log</span> </a> <ul class="astro-g2bywc46" style="--depth: 1;"> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-chrome-1" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Chrome</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-firefox-1" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Firefox</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-microsoft-edge-1" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Microsoft Edge</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-safari-1" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">In Safari</span> </a></li> </ul></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#capture-a-netlog-dump" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Capture a NetLog dump</span> </a></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#identify-the-cloudflare-data-center-serving-your-request" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Identify the Cloudflare data center serving your request</span> </a></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#troubleshoot-requests-with-curl" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Troubleshoot requests with curl</span> </a> <ul class="astro-g2bywc46" style="--depth: 1;"> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#http-errors" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">HTTP errors</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#performance" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">Performance</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#caching" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">Caching</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#ssltls-certificates" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">SSL/TLS certificates</span> </a></li> </ul></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#temporarily-pause-cloudflare" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Temporarily pause Cloudflare</span> </a></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#perform-a-traceroute" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Perform a traceroute</span> </a> <ul class="astro-g2bywc46" style="--depth: 1;"> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#run-traceroute-on-windows" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">Run traceroute on Windows</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#run-traceroute-on-linux" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">Run traceroute on Linux</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#run-traceroute-on-mac-os" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">Run traceroute on Mac OS</span> </a></li> </ul></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#add-the-cf-ray-header-to-your-logs" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Add the CF-RAY header to your logs</span> </a> <ul class="astro-g2bywc46" style="--depth: 1;"> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#for-apache-web-servers-add-cf-rayi-to-logformat" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">For Apache web servers, add %{CF-Ray}i to LogFormat</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#for-nginx-web-servers-add-http_cf_ray-to-log_format" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">For Nginx web servers, add '$http_cf_ray' to log_format</span> </a></li> </ul></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#perform-a-mtr" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Perform a MTR</span> </a> <ul class="astro-g2bywc46" style="--depth: 1;"> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#how-do-i-use-mtr-to-generate-network-path-report" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">How do I use MTR to generate network path report?</span> </a></li> </ul></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#run-packet-captures" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Run Packet Captures</span> </a></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#related-resources" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Related resources</span> </a></li> </ul> </nav> </starlight-toc> <script type="module" src="/_astro/TableOfContents.astro_astro_type_script_index_0_lang.CxWEh7Yp.js"></script><br><astro-island uid="ZcQfTO" prefix="r1" component-url="/_astro/FeedbackPrompt.sIVdSYEF.js" component-export="default" renderer-url="/_astro/client.BUsrUfVi.js" props="{}" ssr client="idle" opts="{"name":"FeedbackPrompt","value":true}" await-children> <div> <h2>Was this helpful?</h2><button class="cursor-pointer bg-transparent"> <svg stroke="currentColor" fill="currentColor" stroke-width="0" viewbox="0 0 24 24" class="text-2xl text-sl hover:text-accent" height="1em" width="1em" xmlns="http://www.w3.org/2000/svg"> 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ResizeObserver(e=>{e.forEach(s=>{this.checkOverflow(s.target.clientWidth)})}),this.breadcrumbs&&this.resizeObserver.observe(this.breadcrumbs)}connectedCallback(){this.showHiddenCrumbs()}disconnectedCallback(){this.resizeObserver&&this.breadcrumbs&&(this.resizeObserver.unobserve(this.breadcrumbs),this.resizeObserver.disconnect())}toggleTruncated(e){this.breadcrumbs?.classList.toggle("is-truncated",e)}showHiddenCrumbs(){const e=this.breadcrumbs?.querySelector(`.${this.mainBemClass}__truncated-button`);e?.removeEventListener("click",this.handleTruncatedButtonClick),e?.addEventListener("click",this.handleTruncatedButtonClick.bind(this))}checkOverflow(e){const s=this.totalWidth>e&&!this.isManualToggle;this.toggleTruncated(s),s||(this.isManualToggle=!1)}}customElements.get("astro-breadcrumbs")||customElements.define("astro-breadcrumbs",t);</script> <h1 id="_top" class="astro-j6tvhyss">Gathering information for troubleshooting sites</h1> </div> </div> <div class="content-panel astro-7nkwcw3z"> <div class="sl-container astro-7nkwcw3z"><starlight-image-zoom> <template class="astro-vjux6bgf"><dialog class="starlight-image-zoom-dialog astro-vjux6bgf"> <button aria-label="Unzoom image" class="starlight-image-zoom-control astro-vjux6bgf"> <svg aria-hidden="true" fill="currentColor" viewbox="0 0 24 24" class="astro-vjux6bgf"><use href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#starlight-image-zoom-icon-unzoom" class="astro-vjux6bgf"></use> </svg></button> <figure class="astro-vjux6bgf"></figure> </dialog> </template> <svg xmlns="http://www.w3.org/2000/svg" style="display:none" class="astro-vjux6bgf"><symbol id="starlight-image-zoom-icon-zoom" viewbox="0 0 24 24" class="astro-vjux6bgf"> <path d="M9.79 12.79 4 18.59V17a1 1 0 0 0-2 0v4a1 1 0 0 0 .08.38 1 1 0 0 0 .54.54A1 1 0 0 0 3 22h4a1 1 0 0 0 0-2H5.41l5.8-5.79a1 1 0 0 0-1.42-1.42ZM21.92 2.62a1 1 0 0 0-.54-.54A1 1 0 0 0 21 2h-4a1 1 0 0 0 0 2h1.59l-5.8 5.79a1 1 0 0 0 0 1.42 1 1 0 0 0 1.42 0L20 5.41V7a1 1 0 0 0 2 0V3a1 1 0 0 0-.08-.38Z" class="astro-vjux6bgf" /> </symbol> <symbol id="starlight-image-zoom-icon-unzoom" viewbox="0 0 24 24" class="astro-vjux6bgf"> <path d="M21.71 2.29a1 1 0 0 0-1.42 0l-5.79 5.8V6.5a1 1 0 0 0-2 0v4a1 1 0 0 0 .08.38 1 1 0 0 0 .54.54 1 1 0 0 0 .38.08h4a1 1 0 0 0 0-2h-1.59l5.8-5.79a1 1 0 0 0 0-1.42ZM10.88 12.58a1 1 0 0 0-.38-.08h-4a1 1 0 0 0 0 2h1.59l-5.8 5.79a1 1 0 0 0 0 1.42 1 1 0 0 0 1.42 0l5.79-5.8v1.59a1 1 0 0 0 2 0v-4a1 1 0 0 0-.08-.38 1 1 0 0 0-.54-.54Z" class="astro-vjux6bgf" /> </symbol> </svg> </starlight-image-zoom> <script type="module" src="/_astro/ImageZoom.astro_astro_type_script_index_0_lang.BjAW4avr.js"></script> <div class="sl-markdown-content astro-cedpceuv"> <div tabindex="-1" class="heading-wrapper level-h2"> <h2 id="overview">Overview</h2><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#overview"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>It is important to capture as much information as possible to diagnose an issue and to <a href="https://developers-cloudflare-com.translate.goog/support/contacting-cloudflare-support/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB">provide adequate details to Cloudflare support</a>. This article explains how to gather troubleshooting information commonly requested by Cloudflare Support.</p> <aside aria-label="Note" class="starlight-aside starlight-aside--note"> <p class="starlight-aside__title" aria-hidden="true"> <svg viewbox="0 0 24 24" width="16" height="16" fill="currentColor" class="starlight-aside__icon"> <path d="M12 11C11.7348 11 11.4804 11.1054 11.2929 11.2929C11.1054 11.4804 11 11.7348 11 12V16C11 16.2652 11.1054 16.5196 11.2929 16.7071C11.4804 16.8946 11.7348 17 12 17C12.2652 17 12.5196 16.8946 12.7071 16.7071C12.8946 16.5196 13 16.2652 13 16V12C13 11.7348 12.8946 11.4804 12.7071 11.2929C12.5196 11.1054 12.2652 11 12 11ZM12.38 7.08C12.1365 6.97998 11.8635 6.97998 11.62 7.08C11.4973 7.12759 11.3851 7.19896 11.29 7.29C11.2017 7.3872 11.1306 7.49882 11.08 7.62C11.024 7.73868 10.9966 7.86882 11 8C10.9992 8.13161 11.0245 8.26207 11.0742 8.38391C11.124 8.50574 11.1973 8.61656 11.29 8.71C11.3872 8.79833 11.4988 8.86936 11.62 8.92C11.7715 8.98224 11.936 9.00632 12.099 8.99011C12.2619 8.97391 12.4184 8.91792 12.5547 8.82707C12.691 8.73622 12.8029 8.61328 12.8805 8.46907C12.9582 8.32486 12.9992 8.16378 13 8C12.9963 7.73523 12.8927 7.48163 12.71 7.29C12.6149 7.19896 12.5028 7.12759 12.38 7.08ZM12 2C10.0222 2 8.08879 2.58649 6.4443 3.6853C4.79981 4.78412 3.51809 6.3459 2.76121 8.17317C2.00433 10.0004 1.8063 12.0111 2.19215 13.9509C2.578 15.8907 3.53041 17.6725 4.92894 19.0711C6.32746 20.4696 8.10929 21.422 10.0491 21.8079C11.9889 22.1937 13.9996 21.9957 15.8268 21.2388C17.6541 20.4819 19.2159 19.2002 20.3147 17.5557C21.4135 15.9112 22 13.9778 22 12C22 10.6868 21.7413 9.38642 21.2388 8.17317C20.7363 6.95991 19.9997 5.85752 19.0711 4.92893C18.1425 4.00035 17.0401 3.26375 15.8268 2.7612C14.6136 2.25866 13.3132 2 12 2ZM12 20C10.4178 20 8.87104 19.5308 7.55544 18.6518C6.23985 17.7727 5.21447 16.5233 4.60897 15.0615C4.00347 13.5997 3.84504 11.9911 4.15372 10.4393C4.4624 8.88743 5.22433 7.46197 6.34315 6.34315C7.46197 5.22433 8.88743 4.4624 10.4393 4.15372C11.9911 3.84504 13.5997 4.00346 15.0615 4.60896C16.5233 5.21447 17.7727 6.23984 18.6518 7.55544C19.5308 8.87103 20 10.4177 20 12C20 14.1217 19.1572 16.1566 17.6569 17.6569C16.1566 19.1571 14.1217 20 12 20Z" /> </svg>Note</p> <div class="starlight-aside__content"> <p>Cloudflare support cannot make configuration changes on behalf of customers due to security and liability concerns.</p> </div> </aside> <hr> <div tabindex="-1" class="heading-wrapper level-h2"> <h2 id="generate-a-har-file">Generate a HAR file</h2><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#generate-a-har-file"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>A HTTP Archive (HAR) records all web browser requests including the request and response headers, the body content, and the page load time. Be sure to use Incognito Mode or a Private Browsing window.</p> <aside aria-label="Warning" class="starlight-aside starlight-aside--caution"> <p class="starlight-aside__title" aria-hidden="true"> <svg viewbox="0 0 24 24" width="16" height="16" fill="currentColor" class="starlight-aside__icon"> <path d="M12 16C11.8022 16 11.6089 16.0587 11.4444 16.1686C11.28 16.2784 11.1518 16.4346 11.0761 16.6173C11.0004 16.8001 10.9806 17.0011 11.0192 17.1951C11.0578 17.3891 11.153 17.5673 11.2929 17.7071C11.4327 17.847 11.6109 17.9422 11.8049 17.9808C11.9989 18.0194 12.2 17.9996 12.3827 17.9239C12.5654 17.8482 12.7216 17.72 12.8315 17.5556C12.9413 17.3911 13 17.1978 13 17C13 16.7348 12.8946 16.4805 12.7071 16.2929C12.5196 16.1054 12.2652 16 12 16ZM22.67 17.47L14.62 3.47003C14.3598 3.00354 13.9798 2.61498 13.5192 2.3445C13.0586 2.07401 12.5341 1.9314 12 1.9314C11.4659 1.9314 10.9414 2.07401 10.4808 2.3445C10.0202 2.61498 9.64019 3.00354 9.38 3.47003L1.38 17.47C1.11079 17.924 0.966141 18.441 0.960643 18.9688C0.955144 19.4966 1.089 20.0166 1.34868 20.4761C1.60837 20.9356 1.9847 21.3185 2.43968 21.5861C2.89466 21.8536 3.41218 21.9964 3.94 22H20.06C20.5921 22.0053 21.1159 21.8689 21.5779 21.6049C22.0399 21.341 22.4234 20.9589 22.689 20.4978C22.9546 20.0368 23.0928 19.5134 23.0895 18.9814C23.0862 18.4493 22.9414 17.9277 22.67 17.47ZM20.94 19.47C20.8523 19.626 20.7245 19.7556 20.5697 19.8453C20.4149 19.935 20.2389 19.9815 20.06 19.98H3.94C3.76111 19.9815 3.5851 19.935 3.43032 19.8453C3.27553 19.7556 3.14765 19.626 3.06 19.47C2.97223 19.318 2.92602 19.1456 2.92602 18.97C2.92602 18.7945 2.97223 18.622 3.06 18.47L11.06 4.47003C11.1439 4.30623 11.2714 4.16876 11.4284 4.07277C11.5855 3.97678 11.766 3.92599 11.95 3.92599C12.134 3.92599 12.3145 3.97678 12.4716 4.07277C12.6286 4.16876 12.7561 4.30623 12.84 4.47003L20.89 18.47C20.9892 18.6199 21.0462 18.7937 21.055 18.9732C21.0638 19.1527 21.0241 19.3312 20.94 19.49V19.47ZM12 8.00003C11.7348 8.00003 11.4804 8.10538 11.2929 8.29292C11.1054 8.48046 11 8.73481 11 9.00003V13C11 13.2652 11.1054 13.5196 11.2929 13.7071C11.4804 13.8947 11.7348 14 12 14C12.2652 14 12.5196 13.8947 12.7071 13.7071C12.8946 13.5196 13 13.2652 13 13V9.00003C13 8.73481 12.8946 8.48046 12.7071 8.29292C12.5196 8.10538 12.2652 8.00003 12 8.00003Z" /> </svg>Warning</p> <div class="starlight-aside__content"> <p>A HAR file can include sensitive details such as passwords, payment information, and private keys.</p> <p>Remove sensitive information using a <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://har-sanitizer.pages.dev/" target="_blank" rel="noopener">HAR Sanitizer<span class="external-link"> ↗</span></a>.</p> </div> </aside> <p>Some browsers either require a browser extension or cannot generate a HAR. When installing a browser extension, follow the instructions from the extension provider.</p> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="in-chrome">In Chrome</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-chrome"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <ol> <li><p>In a browser page viewed in Incognito Mode, right-click anywhere and select <strong>Inspect Element</strong>.</p></li> <li><p>The Chrome DevTools appear either at the bottom, or left side of the browser. Click the <strong>Network</strong> tab.</p></li> </ol><starlight-image-zoom-zoomable> <img src="/_astro/gathering_har_file_network.ChkQZzBt_Z9Lfla.webp" alt="HAR network tab screenshot from Chrome developer tools" width="702" height="146" loading="lazy" decoding="async"> <button aria-label="Zoom image: HAR network tab screenshot from Chrome developer tools" class="starlight-image-zoom-control"> <svg aria-hidden="true" fill="currentColor" viewbox="0 0 24 24"> <use href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#starlight-image-zoom-icon-zoom"></use> </svg></button> </starlight-image-zoom-zoomable> <ol start="3"> <li><p>Check <strong>Preserve log</strong>. Please also check <strong>Disable cache</strong> if you are reporting a Cloudflare Cache issue.</p></li> <li><p>Click record.</p></li> </ol><starlight-image-zoom-zoomable> <img src="/_astro/gathering_har_file_record.DXRSe9od_Z1EoAYr.webp" alt="HAR record button in chrome dev tools." width="702" height="146" loading="lazy" decoding="async"> <button aria-label="Zoom image: HAR record button in chrome dev tools." class="starlight-image-zoom-control"> <svg aria-hidden="true" fill="currentColor" viewbox="0 0 24 24"> <use href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#starlight-image-zoom-icon-zoom"></use> </svg></button> </starlight-image-zoom-zoomable> <ol start="5"> <li>Browse to the URL that causes issues. Once the issue is experienced, click the "Export HAR" option at the top of DevTools.</li> </ol><starlight-image-zoom-zoomable> <img src="/_astro/export_har_chrome.DaDwwlXd_1W5V3K.webp" alt="export HAR option in Chrome DevTools" width="1404" height="240" loading="lazy" decoding="async"> <button aria-label="Zoom image: export HAR option in Chrome DevTools" class="starlight-image-zoom-control"> <svg aria-hidden="true" fill="currentColor" viewbox="0 0 24 24"> <use href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#starlight-image-zoom-icon-zoom"></use> </svg></button> </starlight-image-zoom-zoomable> <ol start="6"> <li>Attach the HAR file to your support ticket.</li> </ol> <aside aria-label="Note" class="starlight-aside starlight-aside--note"> <p class="starlight-aside__title" aria-hidden="true"> <svg viewbox="0 0 24 24" width="16" height="16" fill="currentColor" class="starlight-aside__icon"> <path d="M12 11C11.7348 11 11.4804 11.1054 11.2929 11.2929C11.1054 11.4804 11 11.7348 11 12V16C11 16.2652 11.1054 16.5196 11.2929 16.7071C11.4804 16.8946 11.7348 17 12 17C12.2652 17 12.5196 16.8946 12.7071 16.7071C12.8946 16.5196 13 16.2652 13 16V12C13 11.7348 12.8946 11.4804 12.7071 11.2929C12.5196 11.1054 12.2652 11 12 11ZM12.38 7.08C12.1365 6.97998 11.8635 6.97998 11.62 7.08C11.4973 7.12759 11.3851 7.19896 11.29 7.29C11.2017 7.3872 11.1306 7.49882 11.08 7.62C11.024 7.73868 10.9966 7.86882 11 8C10.9992 8.13161 11.0245 8.26207 11.0742 8.38391C11.124 8.50574 11.1973 8.61656 11.29 8.71C11.3872 8.79833 11.4988 8.86936 11.62 8.92C11.7715 8.98224 11.936 9.00632 12.099 8.99011C12.2619 8.97391 12.4184 8.91792 12.5547 8.82707C12.691 8.73622 12.8029 8.61328 12.8805 8.46907C12.9582 8.32486 12.9992 8.16378 13 8C12.9963 7.73523 12.8927 7.48163 12.71 7.29C12.6149 7.19896 12.5028 7.12759 12.38 7.08ZM12 2C10.0222 2 8.08879 2.58649 6.4443 3.6853C4.79981 4.78412 3.51809 6.3459 2.76121 8.17317C2.00433 10.0004 1.8063 12.0111 2.19215 13.9509C2.578 15.8907 3.53041 17.6725 4.92894 19.0711C6.32746 20.4696 8.10929 21.422 10.0491 21.8079C11.9889 22.1937 13.9996 21.9957 15.8268 21.2388C17.6541 20.4819 19.2159 19.2002 20.3147 17.5557C21.4135 15.9112 22 13.9778 22 12C22 10.6868 21.7413 9.38642 21.2388 8.17317C20.7363 6.95991 19.9997 5.85752 19.0711 4.92893C18.1425 4.00035 17.0401 3.26375 15.8268 2.7612C14.6136 2.25866 13.3132 2 12 2ZM12 20C10.4178 20 8.87104 19.5308 7.55544 18.6518C6.23985 17.7727 5.21447 16.5233 4.60897 15.0615C4.00347 13.5997 3.84504 11.9911 4.15372 10.4393C4.4624 8.88743 5.22433 7.46197 6.34315 6.34315C7.46197 5.22433 8.88743 4.4624 10.4393 4.15372C11.9911 3.84504 13.5997 4.00346 15.0615 4.60896C16.5233 5.21447 17.7727 6.23984 18.6518 7.55544C19.5308 8.87103 20 10.4177 20 12C20 14.1217 19.1572 16.1566 17.6569 17.6569C16.1566 19.1571 14.1217 20 12 20Z" /> </svg>Note</p> <div class="starlight-aside__content"> <p>As of Chrome 130, this exports a sanitized HAR with redacted cookies and personalised data. To disable this, go to DevTools <strong>Settings</strong> > <strong>Preferences</strong> > <strong>Network</strong> > <strong>Allow to generate HAR with sensitive data</strong>.</p> </div> </aside> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="in-firefox">In Firefox</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-firefox"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <ol> <li><p>While using a Private Window, use the application menu and select <strong>Tools</strong> > <strong>Web Developer</strong> > <strong>Network</strong> or press <em>Ctrl+Shift+I</em> (Windows/Linux) or <em>Cmd+Option+I</em> (OS X).</p></li> <li><p>Browse to the URL that causes issues.</p></li> <li><p>After duplicating the issue, right-click and choose <strong>Save All As HAR</strong>.</p></li> </ol> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="in-microsoft-edge">In Microsoft Edge</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-microsoft-edge"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <ol> <li><p>In a Private window, navigate to <strong>Developer tools</strong> (use <code dir="auto">F12</code> as a shortcut) and select the <strong>Network</strong> tab.</p></li> <li><p>Browse to the URL that causes issues.</p></li> <li><p>After duplicating the issue, click on <strong>Export as HAR</strong> followed by <strong>Save As...</strong>.</p></li> </ol> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="in-safari">In Safari</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-safari"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <ol> <li><p>In Safari, ensure a <strong>Develop</strong> menu appears at the top of a Private Window in the browser window. Otherwise, go to <strong>Safari</strong> > <strong>Preferences</strong> > <strong>Advanced</strong> and select <strong>Show Develop Menu in menu bar</strong></p></li> <li><p>Navigate to <strong>Develop</strong> > <strong>Show Web Inspector</strong>.</p></li> <li><p>Browse to the URL that causes issues.</p></li> <li><p>Ctrl + click on a resource within Web Inspector and click <strong>Export HAR</strong>.</p></li> </ol> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="in-mobile">In Mobile</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-mobile"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p><strong>For Android:</strong></p> <ol> <li><p>Enable USB Debugging mode on your mobile device.</p></li> <li><p>Go to <code dir="auto">chrome://inspect/#devices</code>.</p></li> <li><p>If debugging mode is enabled, you will see your device listed below “Remote Target” like the example below:</p></li> </ol><starlight-image-zoom-zoomable> <img src="/_astro/step_1.BKH5ksch_Z19HRwr.webp" alt="Where to find the Inspect Devices when in Debug Mode for Android." width="1116" height="572" loading="lazy" decoding="async"> <button aria-label="Zoom image: Where to find the Inspect Devices when in Debug Mode for Android." class="starlight-image-zoom-control"> <svg aria-hidden="true" fill="currentColor" viewbox="0 0 24 24"> <use href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#starlight-image-zoom-icon-zoom"></use> </svg></button> </starlight-image-zoom-zoomable> <ol start="4"> <li><p>Type in the URL, select <strong>Open</strong> and <strong>inspect</strong> to open Chrome’s DevTools.</p></li> <li><p>Select the <strong>Network</strong> tab in the DevTools window.</p></li> <li><p>Check <strong>Preserve log</strong>. Please also check <strong><em>Disable cache</em></strong> if you are reporting a Cloudflare Cache issue.</p></li> <li><p>Click <strong>record</strong>.</p></li> </ol><starlight-image-zoom-zoomable> <img src="/_astro/step_2_-_better.CJPZfMsT_1mwlPs.webp" alt="Where to find the record button in Chrome's dev tools." width="702" height="146" loading="lazy" decoding="async"> <button aria-label="Zoom image: Where to find the record button in Chrome's dev tools." class="starlight-image-zoom-control"> <svg aria-hidden="true" fill="currentColor" viewbox="0 0 24 24"> <use href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#starlight-image-zoom-icon-zoom"></use> </svg></button> </starlight-image-zoom-zoomable> <ol start="8"> <li>Browse to the URL that causes issues. Once the issue is experienced, right-click on any of the items within the <strong>Network</strong> tab and select <strong>Save all as HAR with Content</strong>.</li> </ol><starlight-image-zoom-zoomable> <img src="/_astro/step_3.D5uw6wSa_1xy71.webp" alt="How to save HAR content. " width="702" height="384" loading="lazy" decoding="async"> <button aria-label="Zoom image: How to save HAR content." class="starlight-image-zoom-control"> <svg aria-hidden="true" fill="currentColor" viewbox="0 0 24 24"> <use href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#starlight-image-zoom-icon-zoom"></use> </svg></button> </starlight-image-zoom-zoomable> <ol start="9"> <li>Attach the HAR file to your support ticket alongside a screen recording from the affected Samsung device. Instructions on how to do this from Samsung devices can be found in <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://www.samsung.com/au/support/mobile-devices/screen-recorder/" target="_blank" rel="noopener">Samsung's documentation here<span class="external-link"> ↗</span></a>.</li> </ol> <hr> <p><strong>For iPhone:</strong></p> <p>Refer to <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://support.okta.com/help/s/article/How-to-generate-a-HAR-capture-on-an-iOS-device?language%3Den_US" target="_blank" rel="noopener">Okta<span class="external-link"> ↗</span></a> or <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://developer.apple.com/library/archive/documentation/AppleApplications/Conceptual/Safari_Developer_Guide/GettingStarted/GettingStarted.html%23//apple_ref/doc/uid/TP40007874-CH2-SW1" target="_blank" rel="noopener">Apple's<span class="external-link"> ↗</span></a> support article on how to generate a HAR file from an iOS device. Attach the HAR file to your support ticket alongside a screen recording from the affected iOS device. Apple devices now have <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://support.apple.com/en-us/HT207935" target="_blank" rel="noopener">built-in screen recording functionality<span class="external-link"> ↗</span></a>.</p> <hr> <div tabindex="-1" class="heading-wrapper level-h2"> <h2 id="export-console-log">Export Console Log</h2><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#export-console-log"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>In certain situations when request is not issued or cancelled by the browser (for example, due to <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://developer.mozilla.org/en-US/docs/Glossary/CORS" target="_blank" rel="noopener">CORS<span class="external-link"> ↗</span></a>), we need to get JS console log output, in addition to the HAR file, to identify the root cause.</p> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="in-chrome-1">In Chrome</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-chrome-1"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <ol> <li>Go to the <strong>Console</strong> tab from the DevTools bar.</li> <li>Go to the Console Settings and select <strong>Preserve Log</strong>.</li> <li>Leave the console open and perform the steps that reproduce the issue.</li> <li>Right-click on any of the items within the <strong>Console</strong> tab and select <strong>Save as</strong> log file.</li> <li>Attach the log file to your support ticket.</li> </ol><starlight-image-zoom-zoomable> <img src="/_astro/console_snapshot.BshJeLnS_ZzrvXb.webp" alt="How to find the console tab in Chrome's developer tools." width="2478" height="274" loading="lazy" decoding="async"> <button aria-label="Zoom image: How to find the console tab in Chrome's developer tools." class="starlight-image-zoom-control"> <svg aria-hidden="true" fill="currentColor" viewbox="0 0 24 24"> <use href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#starlight-image-zoom-icon-zoom"></use> </svg></button> </starlight-image-zoom-zoomable> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="in-firefox-1">In Firefox</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-firefox-1"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <ol> <li>Go to the <strong>Console</strong> tab from the Web Developer Tools bar.</li> <li>Go to the Console Settings and select <strong>Persist Log</strong> and <strong>Show Timestamps</strong>.</li> <li>Leave the console open and perform the steps that reproduce the issue.</li> <li>Right click, <strong>Select All</strong> messages and <strong>Export Visible Messages to File</strong>.</li> <li>Attach the log file to your support ticket.</li> </ol> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="in-microsoft-edge-1">In Microsoft Edge</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-microsoft-edge-1"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <ol> <li>Go to the <strong>Console</strong> tab from the Developer Tools bar.</li> <li>Go to the Console Settings and select <strong>Preserve Log</strong>.</li> <li>Leave the console open and perform the steps that reproduce the issue.</li> <li>Right click on any of the items within the <strong>Console</strong> tab and select <strong>Save as</strong> log file.</li> <li>Attach the log file to your support ticket.</li> </ol> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="in-safari-1">In Safari</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#in-safari-1"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <ol> <li>Go to the <strong>Console</strong> tab from the Web Inspector bar.</li> <li>Tick the box <strong>Preserve Log</strong>.</li> <li>Leave the console open and perform the steps that reproduce the issue.</li> <li>Select all the messages, right click and <strong>Save Selected</strong> to a log file.</li> <li>Attach the log file to your support ticket.</li> </ol> <hr> <div tabindex="-1" class="heading-wrapper level-h2"> <h2 id="capture-a-netlog-dump">Capture a NetLog dump</h2><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#capture-a-netlog-dump"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>In some cases, in order to further troubleshoot issues related to protocols (errors such as <code dir="auto">ERR_QUIC_PROTOCOL_ERROR</code>, <code dir="auto">ERR_HTTP2_PROTOCOL_ERROR</code>, etc..) our Support team may ask you to provide a <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://www.chromium.org/for-testers/providing-network-details/" target="_blank" rel="noopener">NetLog dump<span class="external-link"> ↗</span></a>.</p> <aside aria-label="Warning" class="starlight-aside starlight-aside--caution"> <p class="starlight-aside__title" aria-hidden="true"> <svg viewbox="0 0 24 24" width="16" height="16" fill="currentColor" class="starlight-aside__icon"> <path d="M12 16C11.8022 16 11.6089 16.0587 11.4444 16.1686C11.28 16.2784 11.1518 16.4346 11.0761 16.6173C11.0004 16.8001 10.9806 17.0011 11.0192 17.1951C11.0578 17.3891 11.153 17.5673 11.2929 17.7071C11.4327 17.847 11.6109 17.9422 11.8049 17.9808C11.9989 18.0194 12.2 17.9996 12.3827 17.9239C12.5654 17.8482 12.7216 17.72 12.8315 17.5556C12.9413 17.3911 13 17.1978 13 17C13 16.7348 12.8946 16.4805 12.7071 16.2929C12.5196 16.1054 12.2652 16 12 16ZM22.67 17.47L14.62 3.47003C14.3598 3.00354 13.9798 2.61498 13.5192 2.3445C13.0586 2.07401 12.5341 1.9314 12 1.9314C11.4659 1.9314 10.9414 2.07401 10.4808 2.3445C10.0202 2.61498 9.64019 3.00354 9.38 3.47003L1.38 17.47C1.11079 17.924 0.966141 18.441 0.960643 18.9688C0.955144 19.4966 1.089 20.0166 1.34868 20.4761C1.60837 20.9356 1.9847 21.3185 2.43968 21.5861C2.89466 21.8536 3.41218 21.9964 3.94 22H20.06C20.5921 22.0053 21.1159 21.8689 21.5779 21.6049C22.0399 21.341 22.4234 20.9589 22.689 20.4978C22.9546 20.0368 23.0928 19.5134 23.0895 18.9814C23.0862 18.4493 22.9414 17.9277 22.67 17.47ZM20.94 19.47C20.8523 19.626 20.7245 19.7556 20.5697 19.8453C20.4149 19.935 20.2389 19.9815 20.06 19.98H3.94C3.76111 19.9815 3.5851 19.935 3.43032 19.8453C3.27553 19.7556 3.14765 19.626 3.06 19.47C2.97223 19.318 2.92602 19.1456 2.92602 18.97C2.92602 18.7945 2.97223 18.622 3.06 18.47L11.06 4.47003C11.1439 4.30623 11.2714 4.16876 11.4284 4.07277C11.5855 3.97678 11.766 3.92599 11.95 3.92599C12.134 3.92599 12.3145 3.97678 12.4716 4.07277C12.6286 4.16876 12.7561 4.30623 12.84 4.47003L20.89 18.47C20.9892 18.6199 21.0462 18.7937 21.055 18.9732C21.0638 19.1527 21.0241 19.3312 20.94 19.49V19.47ZM12 8.00003C11.7348 8.00003 11.4804 8.10538 11.2929 8.29292C11.1054 8.48046 11 8.73481 11 9.00003V13C11 13.2652 11.1054 13.5196 11.2929 13.7071C11.4804 13.8947 11.7348 14 12 14C12.2652 14 12.5196 13.8947 12.7071 13.7071C12.8946 13.5196 13 13.2652 13 13V9.00003C13 8.73481 12.8946 8.48046 12.7071 8.29292C12.5196 8.10538 12.2652 8.00003 12 8.00003Z" /> </svg>Warning</p> <div class="starlight-aside__content"> <p>You can only generate a NetLog dump on the Google Chrome, Opera or Microsoft Edge browsers.</p> </div> </aside> <ol> <li>Open a new tab and enter the following depending on the browser you're using:</li> </ol> <ul> <li><code dir="auto">chrome://net-export</code></li> <li><code dir="auto">edge://net-export</code></li> <li><code dir="auto">opera://net-export</code></li> </ul> <ol start="2"> <li>Click the <strong>Start Logging To Disk</strong> button.</li> <li>Reproduce the network problem in a different tab. (the <code dir="auto">chrome://net-export/</code>, <code dir="auto">edge://net-export/</code> or <code dir="auto">opera://net-export</code> tab needs to stay open otherwise logging will automatically stop)</li> <li>Click <strong>Stop Logging</strong> button.</li> <li>Attach the log file to your support ticket.</li> </ol> <hr> <div tabindex="-1" class="heading-wrapper level-h2"> <h2 id="identify-the-cloudflare-data-center-serving-your-request">Identify the Cloudflare data center serving your request</h2><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#identify-the-cloudflare-data-center-serving-your-request"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p><a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://www.cloudflare.com/network-map" target="_blank" rel="noopener">A map of our data centers<span class="external-link"> ↗</span></a> is listed on the <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://www.cloudflarestatus.com/" target="_blank" rel="noopener">Cloudflare status page<span class="external-link"> ↗</span></a>, sorted by continent. The three-letter code in the data center name is the <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=http://en.wikipedia.org/wiki/IATA_airport_code" target="_blank" rel="noopener">IATA code<span class="external-link"> ↗</span></a> of the nearest major international airport. Determine the Cloudflare data center serving requests for your browser by visiting: <code dir="auto">http://``_www.example.com_``/cdn-cgi/trace.</code></p> <p>Replace <code dir="auto">www.example.com</code> with your domain and hostname. Note the <code dir="auto">colo</code> field from the output.</p> <hr> <div tabindex="-1" class="heading-wrapper level-h2"> <h2 id="troubleshoot-requests-with-curl">Troubleshoot requests with curl</h2><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#troubleshoot-requests-with-curl"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p><a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://curl.se/" target="_blank" rel="noopener">curl<span class="external-link"> ↗</span></a> is a command line tool for sending HTTP/HTTPS requests and is useful for troubleshooting:</p> <ul> <li>HTTP/HTTPS Performance</li> <li>HTTP Error Responses</li> <li>HTTP Headers</li> <li>APIs</li> <li>Comparing Server/Proxy Responses</li> <li>SSL Certificates</li> </ul> <aside aria-label="Note" class="starlight-aside starlight-aside--note"> <p class="starlight-aside__title" aria-hidden="true"> <svg viewbox="0 0 24 24" width="16" height="16" fill="currentColor" class="starlight-aside__icon"> <path d="M12 11C11.7348 11 11.4804 11.1054 11.2929 11.2929C11.1054 11.4804 11 11.7348 11 12V16C11 16.2652 11.1054 16.5196 11.2929 16.7071C11.4804 16.8946 11.7348 17 12 17C12.2652 17 12.5196 16.8946 12.7071 16.7071C12.8946 16.5196 13 16.2652 13 16V12C13 11.7348 12.8946 11.4804 12.7071 11.2929C12.5196 11.1054 12.2652 11 12 11ZM12.38 7.08C12.1365 6.97998 11.8635 6.97998 11.62 7.08C11.4973 7.12759 11.3851 7.19896 11.29 7.29C11.2017 7.3872 11.1306 7.49882 11.08 7.62C11.024 7.73868 10.9966 7.86882 11 8C10.9992 8.13161 11.0245 8.26207 11.0742 8.38391C11.124 8.50574 11.1973 8.61656 11.29 8.71C11.3872 8.79833 11.4988 8.86936 11.62 8.92C11.7715 8.98224 11.936 9.00632 12.099 8.99011C12.2619 8.97391 12.4184 8.91792 12.5547 8.82707C12.691 8.73622 12.8029 8.61328 12.8805 8.46907C12.9582 8.32486 12.9992 8.16378 13 8C12.9963 7.73523 12.8927 7.48163 12.71 7.29C12.6149 7.19896 12.5028 7.12759 12.38 7.08ZM12 2C10.0222 2 8.08879 2.58649 6.4443 3.6853C4.79981 4.78412 3.51809 6.3459 2.76121 8.17317C2.00433 10.0004 1.8063 12.0111 2.19215 13.9509C2.578 15.8907 3.53041 17.6725 4.92894 19.0711C6.32746 20.4696 8.10929 21.422 10.0491 21.8079C11.9889 22.1937 13.9996 21.9957 15.8268 21.2388C17.6541 20.4819 19.2159 19.2002 20.3147 17.5557C21.4135 15.9112 22 13.9778 22 12C22 10.6868 21.7413 9.38642 21.2388 8.17317C20.7363 6.95991 19.9997 5.85752 19.0711 4.92893C18.1425 4.00035 17.0401 3.26375 15.8268 2.7612C14.6136 2.25866 13.3132 2 12 2ZM12 20C10.4178 20 8.87104 19.5308 7.55544 18.6518C6.23985 17.7727 5.21447 16.5233 4.60897 15.0615C4.00347 13.5997 3.84504 11.9911 4.15372 10.4393C4.4624 8.88743 5.22433 7.46197 6.34315 6.34315C7.46197 5.22433 8.88743 4.4624 10.4393 4.15372C11.9911 3.84504 13.5997 4.00346 15.0615 4.60896C16.5233 5.21447 17.7727 6.23984 18.6518 7.55544C19.5308 8.87103 20 10.4177 20 12C20 14.1217 19.1572 16.1566 17.6569 17.6569C16.1566 19.1571 14.1217 20 12 20Z" /> </svg>Note</p> <div class="starlight-aside__content"> <p>If you are using Windows, you can find more details on how to use curl on Windows in our <a href="https://developers-cloudflare-com.translate.goog/fundamentals/api/how-to/make-api-calls/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#making-api-calls-on-windows">Making API calls on Windows </a> article.</p> </div> </aside> <p>Run the following command to send a standard HTTP GET request to your website (replace <code dir="auto">www.example.com</code> with your hostname):</p> <div class="expressive-code"> <link rel="stylesheet" href="/_astro/ec.rt9t7.css"> <script type="module" src="/_astro/ec.8zarh.js"></script> <figure class="frame not-content"> <figcaption class="header"></figcaption> <pre data-language="plaintext"><code> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">curl -svo /dev/null http://www.example.com/</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="curl -svo /dev/null http://www.example.com/"> <div></div></button> </div> </figure> </div> <p>This example curl command returns output detailing the HTTP response and request headers but discards the page body output. curl output confirms the HTTP response and whether Cloudflare is currently proxying traffic for the site.</p> <aside aria-label="Note" class="starlight-aside starlight-aside--note"> <p class="starlight-aside__title" aria-hidden="true"> <svg viewbox="0 0 24 24" width="16" height="16" fill="currentColor" class="starlight-aside__icon"> <path d="M12 11C11.7348 11 11.4804 11.1054 11.2929 11.2929C11.1054 11.4804 11 11.7348 11 12V16C11 16.2652 11.1054 16.5196 11.2929 16.7071C11.4804 16.8946 11.7348 17 12 17C12.2652 17 12.5196 16.8946 12.7071 16.7071C12.8946 16.5196 13 16.2652 13 16V12C13 11.7348 12.8946 11.4804 12.7071 11.2929C12.5196 11.1054 12.2652 11 12 11ZM12.38 7.08C12.1365 6.97998 11.8635 6.97998 11.62 7.08C11.4973 7.12759 11.3851 7.19896 11.29 7.29C11.2017 7.3872 11.1306 7.49882 11.08 7.62C11.024 7.73868 10.9966 7.86882 11 8C10.9992 8.13161 11.0245 8.26207 11.0742 8.38391C11.124 8.50574 11.1973 8.61656 11.29 8.71C11.3872 8.79833 11.4988 8.86936 11.62 8.92C11.7715 8.98224 11.936 9.00632 12.099 8.99011C12.2619 8.97391 12.4184 8.91792 12.5547 8.82707C12.691 8.73622 12.8029 8.61328 12.8805 8.46907C12.9582 8.32486 12.9992 8.16378 13 8C12.9963 7.73523 12.8927 7.48163 12.71 7.29C12.6149 7.19896 12.5028 7.12759 12.38 7.08ZM12 2C10.0222 2 8.08879 2.58649 6.4443 3.6853C4.79981 4.78412 3.51809 6.3459 2.76121 8.17317C2.00433 10.0004 1.8063 12.0111 2.19215 13.9509C2.578 15.8907 3.53041 17.6725 4.92894 19.0711C6.32746 20.4696 8.10929 21.422 10.0491 21.8079C11.9889 22.1937 13.9996 21.9957 15.8268 21.2388C17.6541 20.4819 19.2159 19.2002 20.3147 17.5557C21.4135 15.9112 22 13.9778 22 12C22 10.6868 21.7413 9.38642 21.2388 8.17317C20.7363 6.95991 19.9997 5.85752 19.0711 4.92893C18.1425 4.00035 17.0401 3.26375 15.8268 2.7612C14.6136 2.25866 13.3132 2 12 2ZM12 20C10.4178 20 8.87104 19.5308 7.55544 18.6518C6.23985 17.7727 5.21447 16.5233 4.60897 15.0615C4.00347 13.5997 3.84504 11.9911 4.15372 10.4393C4.4624 8.88743 5.22433 7.46197 6.34315 6.34315C7.46197 5.22433 8.88743 4.4624 10.4393 4.15372C11.9911 3.84504 13.5997 4.00346 15.0615 4.60896C16.5233 5.21447 17.7727 6.23984 18.6518 7.55544C19.5308 8.87103 20 10.4177 20 12C20 14.1217 19.1572 16.1566 17.6569 17.6569C16.1566 19.1571 14.1217 20 12 20Z" /> </svg>Note</p> <div class="starlight-aside__content"> <p>Review the <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://curl.se/docs/manpage.html" target="_blank" rel="noopener">curl command options<span class="external-link"> ↗</span></a> for additional functionality.</p> </div> </aside> <p>View the sections below for tips on troubleshooting HTTP errors, performance, caching, and SSL/TLS certificates:</p> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="http-errors">HTTP errors</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#http-errors"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>When troubleshooting HTTP errors in responses from Cloudflare, test whether your origin caused the errors by sending requests directly to your origin web server. To troubleshoot HTTP errors, run a curl directly to your origin web server IP address (bypassing Cloudflare’s proxy):</p> <div class="expressive-code"> <figure class="frame not-content"> <figcaption class="header"></figcaption> <pre data-language="plaintext"><code> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">curl -svo /dev/null http://example.com --connect-to ::203.0.113.34</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="curl -svo /dev/null http://example.com --connect-to ::203.0.113.34"> <div></div></button> </div> </figure> </div> <aside aria-label="Note" class="starlight-aside starlight-aside--note"> <p class="starlight-aside__title" aria-hidden="true"> <svg viewbox="0 0 24 24" width="16" height="16" fill="currentColor" class="starlight-aside__icon"> <path d="M12 11C11.7348 11 11.4804 11.1054 11.2929 11.2929C11.1054 11.4804 11 11.7348 11 12V16C11 16.2652 11.1054 16.5196 11.2929 16.7071C11.4804 16.8946 11.7348 17 12 17C12.2652 17 12.5196 16.8946 12.7071 16.7071C12.8946 16.5196 13 16.2652 13 16V12C13 11.7348 12.8946 11.4804 12.7071 11.2929C12.5196 11.1054 12.2652 11 12 11ZM12.38 7.08C12.1365 6.97998 11.8635 6.97998 11.62 7.08C11.4973 7.12759 11.3851 7.19896 11.29 7.29C11.2017 7.3872 11.1306 7.49882 11.08 7.62C11.024 7.73868 10.9966 7.86882 11 8C10.9992 8.13161 11.0245 8.26207 11.0742 8.38391C11.124 8.50574 11.1973 8.61656 11.29 8.71C11.3872 8.79833 11.4988 8.86936 11.62 8.92C11.7715 8.98224 11.936 9.00632 12.099 8.99011C12.2619 8.97391 12.4184 8.91792 12.5547 8.82707C12.691 8.73622 12.8029 8.61328 12.8805 8.46907C12.9582 8.32486 12.9992 8.16378 13 8C12.9963 7.73523 12.8927 7.48163 12.71 7.29C12.6149 7.19896 12.5028 7.12759 12.38 7.08ZM12 2C10.0222 2 8.08879 2.58649 6.4443 3.6853C4.79981 4.78412 3.51809 6.3459 2.76121 8.17317C2.00433 10.0004 1.8063 12.0111 2.19215 13.9509C2.578 15.8907 3.53041 17.6725 4.92894 19.0711C6.32746 20.4696 8.10929 21.422 10.0491 21.8079C11.9889 22.1937 13.9996 21.9957 15.8268 21.2388C17.6541 20.4819 19.2159 19.2002 20.3147 17.5557C21.4135 15.9112 22 13.9778 22 12C22 10.6868 21.7413 9.38642 21.2388 8.17317C20.7363 6.95991 19.9997 5.85752 19.0711 4.92893C18.1425 4.00035 17.0401 3.26375 15.8268 2.7612C14.6136 2.25866 13.3132 2 12 2ZM12 20C10.4178 20 8.87104 19.5308 7.55544 18.6518C6.23985 17.7727 5.21447 16.5233 4.60897 15.0615C4.00347 13.5997 3.84504 11.9911 4.15372 10.4393C4.4624 8.88743 5.22433 7.46197 6.34315 6.34315C7.46197 5.22433 8.88743 4.4624 10.4393 4.15372C11.9911 3.84504 13.5997 4.00346 15.0615 4.60896C16.5233 5.21447 17.7727 6.23984 18.6518 7.55544C19.5308 8.87103 20 10.4177 20 12C20 14.1217 19.1572 16.1566 17.6569 17.6569C16.1566 19.1571 14.1217 20 12 20Z" /> </svg>Note</p> <div class="starlight-aside__content"> <p>If you have multiple origin web servers, test each one to ensure there are no response differences. If you observe the issue when connecting directly to your origin web server, contact your hosting provider for assistance.</p> </div> </aside> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="performance">Performance</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#performance"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>curl measures latency or performance degradation for HTTP/HTTPS requests via the <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://curl.haxx.se/docs/manpage.html%23-w" target="_blank" rel="noopener"><code dir="auto">-w</code> or <code dir="auto">--write-out</code> curl option<span class="external-link"> ↗</span></a>. The example curl below measures several performance vectors in the request transaction such as duration of the TLS handshake, DNS lookup, redirects, transfers, etc:</p> <div class="expressive-code"> <figure class="frame not-content"> <figcaption class="header"></figcaption> <pre data-language="plaintext"><code> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">curl -svo /dev/null https://example.com/ -w "\nContent Type: %{content_type} \</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">\nHTTP Code: %{http_code} \</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">\nHTTP Connect:%{http_connect} \</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">\nNumber Connects: %{num_connects} \</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">\nNumber Redirects: %{num_redirects} \</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">\nRedirect URL: %{redirect_url} \</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">\nSize Download: %{size_download} \</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">\nSize Upload: %{size_upload} \</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">\nSSL Verify: %{ssl_verify_result} \</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">\nTime Handshake: %{time_appconnect} \</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">\nTime Connect: %{time_connect} \</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">\nName Lookup Time: %{time_namelookup} \</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">\nTime Pretransfer: %{time_pretransfer} \</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">\nTime Redirect: %{time_redirect} \</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">\nTime Start Transfer: %{time_starttransfer} \</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">\nTime Total: %{time_total} \</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">\nEffective URL: %{url_effective}\n" 2>&1</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="curl -svo /dev/null https://example.com/ -w "\nContent Type: %{content_type} \\nHTTP Code: %{http_code} \\nHTTP Connect:%{http_connect} \\nNumber Connects: %{num_connects} \\nNumber Redirects: %{num_redirects} \\nRedirect URL: %{redirect_url} \\nSize Download: %{size_download} \\nSize Upload: %{size_upload} \\nSSL Verify: %{ssl_verify_result} \\nTime Handshake: %{time_appconnect} \\nTime Connect: %{time_connect} \\nName Lookup Time: %{time_namelookup} \\nTime Pretransfer: %{time_pretransfer} \\nTime Redirect: %{time_redirect} \\nTime Start Transfer: %{time_starttransfer} \\nTime Total: %{time_total} \\nEffective URL: %{url_effective}\n" 2>&1"> <div></div></button> </div> </figure> </div> <p><a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://blog.cloudflare.com/a-question-of-timing/" target="_blank" rel="noopener">Explanation of this timing output<span class="external-link"> ↗</span></a> is found on the Cloudflare blog.</p> <aside aria-label="Note" class="starlight-aside starlight-aside--note"> <p class="starlight-aside__title" aria-hidden="true"> <svg viewbox="0 0 24 24" width="16" height="16" fill="currentColor" class="starlight-aside__icon"> <path d="M12 11C11.7348 11 11.4804 11.1054 11.2929 11.2929C11.1054 11.4804 11 11.7348 11 12V16C11 16.2652 11.1054 16.5196 11.2929 16.7071C11.4804 16.8946 11.7348 17 12 17C12.2652 17 12.5196 16.8946 12.7071 16.7071C12.8946 16.5196 13 16.2652 13 16V12C13 11.7348 12.8946 11.4804 12.7071 11.2929C12.5196 11.1054 12.2652 11 12 11ZM12.38 7.08C12.1365 6.97998 11.8635 6.97998 11.62 7.08C11.4973 7.12759 11.3851 7.19896 11.29 7.29C11.2017 7.3872 11.1306 7.49882 11.08 7.62C11.024 7.73868 10.9966 7.86882 11 8C10.9992 8.13161 11.0245 8.26207 11.0742 8.38391C11.124 8.50574 11.1973 8.61656 11.29 8.71C11.3872 8.79833 11.4988 8.86936 11.62 8.92C11.7715 8.98224 11.936 9.00632 12.099 8.99011C12.2619 8.97391 12.4184 8.91792 12.5547 8.82707C12.691 8.73622 12.8029 8.61328 12.8805 8.46907C12.9582 8.32486 12.9992 8.16378 13 8C12.9963 7.73523 12.8927 7.48163 12.71 7.29C12.6149 7.19896 12.5028 7.12759 12.38 7.08ZM12 2C10.0222 2 8.08879 2.58649 6.4443 3.6853C4.79981 4.78412 3.51809 6.3459 2.76121 8.17317C2.00433 10.0004 1.8063 12.0111 2.19215 13.9509C2.578 15.8907 3.53041 17.6725 4.92894 19.0711C6.32746 20.4696 8.10929 21.422 10.0491 21.8079C11.9889 22.1937 13.9996 21.9957 15.8268 21.2388C17.6541 20.4819 19.2159 19.2002 20.3147 17.5557C21.4135 15.9112 22 13.9778 22 12C22 10.6868 21.7413 9.38642 21.2388 8.17317C20.7363 6.95991 19.9997 5.85752 19.0711 4.92893C18.1425 4.00035 17.0401 3.26375 15.8268 2.7612C14.6136 2.25866 13.3132 2 12 2ZM12 20C10.4178 20 8.87104 19.5308 7.55544 18.6518C6.23985 17.7727 5.21447 16.5233 4.60897 15.0615C4.00347 13.5997 3.84504 11.9911 4.15372 10.4393C4.4624 8.88743 5.22433 7.46197 6.34315 6.34315C7.46197 5.22433 8.88743 4.4624 10.4393 4.15372C11.9911 3.84504 13.5997 4.00346 15.0615 4.60896C16.5233 5.21447 17.7727 6.23984 18.6518 7.55544C19.5308 8.87103 20 10.4177 20 12C20 14.1217 19.1572 16.1566 17.6569 17.6569C16.1566 19.1571 14.1217 20 12 20Z" /> </svg>Note</p> <div class="starlight-aside__content"> <p>As demonstrated in the preceding example, cleaner results are achieved by denoting a new line with <code dir="auto">\n</code> before each variable. Otherwise, all metrics are displayed together on a single line.</p> </div> </aside> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="caching">Caching</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#caching"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>cURL helps review the HTTP response headers that influence caching. In particular, review several HTTP headers when troubleshooting Cloudflare caching:</p> <ul> <li>CF-Cache-Status</li> <li>Cache-Control/Pragma</li> <li>Expires</li> <li>Last-Modified</li> <li>s-maxage</li> </ul> <aside aria-label="Note" class="starlight-aside starlight-aside--note"> <p class="starlight-aside__title" aria-hidden="true"> <svg viewbox="0 0 24 24" width="16" height="16" fill="currentColor" class="starlight-aside__icon"> <path d="M12 11C11.7348 11 11.4804 11.1054 11.2929 11.2929C11.1054 11.4804 11 11.7348 11 12V16C11 16.2652 11.1054 16.5196 11.2929 16.7071C11.4804 16.8946 11.7348 17 12 17C12.2652 17 12.5196 16.8946 12.7071 16.7071C12.8946 16.5196 13 16.2652 13 16V12C13 11.7348 12.8946 11.4804 12.7071 11.2929C12.5196 11.1054 12.2652 11 12 11ZM12.38 7.08C12.1365 6.97998 11.8635 6.97998 11.62 7.08C11.4973 7.12759 11.3851 7.19896 11.29 7.29C11.2017 7.3872 11.1306 7.49882 11.08 7.62C11.024 7.73868 10.9966 7.86882 11 8C10.9992 8.13161 11.0245 8.26207 11.0742 8.38391C11.124 8.50574 11.1973 8.61656 11.29 8.71C11.3872 8.79833 11.4988 8.86936 11.62 8.92C11.7715 8.98224 11.936 9.00632 12.099 8.99011C12.2619 8.97391 12.4184 8.91792 12.5547 8.82707C12.691 8.73622 12.8029 8.61328 12.8805 8.46907C12.9582 8.32486 12.9992 8.16378 13 8C12.9963 7.73523 12.8927 7.48163 12.71 7.29C12.6149 7.19896 12.5028 7.12759 12.38 7.08ZM12 2C10.0222 2 8.08879 2.58649 6.4443 3.6853C4.79981 4.78412 3.51809 6.3459 2.76121 8.17317C2.00433 10.0004 1.8063 12.0111 2.19215 13.9509C2.578 15.8907 3.53041 17.6725 4.92894 19.0711C6.32746 20.4696 8.10929 21.422 10.0491 21.8079C11.9889 22.1937 13.9996 21.9957 15.8268 21.2388C17.6541 20.4819 19.2159 19.2002 20.3147 17.5557C21.4135 15.9112 22 13.9778 22 12C22 10.6868 21.7413 9.38642 21.2388 8.17317C20.7363 6.95991 19.9997 5.85752 19.0711 4.92893C18.1425 4.00035 17.0401 3.26375 15.8268 2.7612C14.6136 2.25866 13.3132 2 12 2ZM12 20C10.4178 20 8.87104 19.5308 7.55544 18.6518C6.23985 17.7727 5.21447 16.5233 4.60897 15.0615C4.00347 13.5997 3.84504 11.9911 4.15372 10.4393C4.4624 8.88743 5.22433 7.46197 6.34315 6.34315C7.46197 5.22433 8.88743 4.4624 10.4393 4.15372C11.9911 3.84504 13.5997 4.00346 15.0615 4.60896C16.5233 5.21447 17.7727 6.23984 18.6518 7.55544C19.5308 8.87103 20 10.4177 20 12C20 14.1217 19.1572 16.1566 17.6569 17.6569C16.1566 19.1571 14.1217 20 12 20Z" /> </svg>Note</p> <div class="starlight-aside__content"> <p>You can refer to the <a href="https://developers-cloudflare-com.translate.goog/cache/get-started/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB">Cloudflare Cache documentation</a> for more details.</p> </div> </aside> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="ssltls-certificates">SSL/TLS certificates</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#ssltls-certificates"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <div tabindex="-1" class="heading-wrapper level-h4"> <h4 id="reviewing-certificates-with-curl">Reviewing Certificates with curl</h4><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#reviewing-certificates-with-curl"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>The following curl command shows the SSL certificate served by Cloudflare during an HTTPS request (replace <code dir="auto">www.example.com</code> with your hostname):</p> <div class="expressive-code"> <figure class="frame is-terminal not-content"> <figcaption class="header"> <span class="title"></span><span class="sr-only">Terminal window</span> </figcaption> <pre data-language="sh"><code> <div class="ec-line"> <div class="code"> <span style="--0:#57C78F;--1:#00783C">curl</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">-svo</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">/dev/null</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">https://www.example.com/</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">2>&1</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">|</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">egrep</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">-v</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"^{.*$|^}.*$|^* http.*$"</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="curl -svo /dev/null https://www.example.com/ 2>&1 | egrep -v "^{.*$|^}.*$|^* http.*$""> <div></div></button> </div> </figure> </div> <aside aria-label="Note" class="starlight-aside starlight-aside--note"> <p class="starlight-aside__title" aria-hidden="true"> <svg viewbox="0 0 24 24" width="16" height="16" fill="currentColor" class="starlight-aside__icon"> <path d="M12 11C11.7348 11 11.4804 11.1054 11.2929 11.2929C11.1054 11.4804 11 11.7348 11 12V16C11 16.2652 11.1054 16.5196 11.2929 16.7071C11.4804 16.8946 11.7348 17 12 17C12.2652 17 12.5196 16.8946 12.7071 16.7071C12.8946 16.5196 13 16.2652 13 16V12C13 11.7348 12.8946 11.4804 12.7071 11.2929C12.5196 11.1054 12.2652 11 12 11ZM12.38 7.08C12.1365 6.97998 11.8635 6.97998 11.62 7.08C11.4973 7.12759 11.3851 7.19896 11.29 7.29C11.2017 7.3872 11.1306 7.49882 11.08 7.62C11.024 7.73868 10.9966 7.86882 11 8C10.9992 8.13161 11.0245 8.26207 11.0742 8.38391C11.124 8.50574 11.1973 8.61656 11.29 8.71C11.3872 8.79833 11.4988 8.86936 11.62 8.92C11.7715 8.98224 11.936 9.00632 12.099 8.99011C12.2619 8.97391 12.4184 8.91792 12.5547 8.82707C12.691 8.73622 12.8029 8.61328 12.8805 8.46907C12.9582 8.32486 12.9992 8.16378 13 8C12.9963 7.73523 12.8927 7.48163 12.71 7.29C12.6149 7.19896 12.5028 7.12759 12.38 7.08ZM12 2C10.0222 2 8.08879 2.58649 6.4443 3.6853C4.79981 4.78412 3.51809 6.3459 2.76121 8.17317C2.00433 10.0004 1.8063 12.0111 2.19215 13.9509C2.578 15.8907 3.53041 17.6725 4.92894 19.0711C6.32746 20.4696 8.10929 21.422 10.0491 21.8079C11.9889 22.1937 13.9996 21.9957 15.8268 21.2388C17.6541 20.4819 19.2159 19.2002 20.3147 17.5557C21.4135 15.9112 22 13.9778 22 12C22 10.6868 21.7413 9.38642 21.2388 8.17317C20.7363 6.95991 19.9997 5.85752 19.0711 4.92893C18.1425 4.00035 17.0401 3.26375 15.8268 2.7612C14.6136 2.25866 13.3132 2 12 2ZM12 20C10.4178 20 8.87104 19.5308 7.55544 18.6518C6.23985 17.7727 5.21447 16.5233 4.60897 15.0615C4.00347 13.5997 3.84504 11.9911 4.15372 10.4393C4.4624 8.88743 5.22433 7.46197 6.34315 6.34315C7.46197 5.22433 8.88743 4.4624 10.4393 4.15372C11.9911 3.84504 13.5997 4.00346 15.0615 4.60896C16.5233 5.21447 17.7727 6.23984 18.6518 7.55544C19.5308 8.87103 20 10.4177 20 12C20 14.1217 19.1572 16.1566 17.6569 17.6569C16.1566 19.1571 14.1217 20 12 20Z" /> </svg>Note</p> <div class="starlight-aside__content"> <p><code dir="auto">2\*>&1 | egrep -v "^{.*$|^}.*$|^\* http.\*$" \*</code> cleans and parses the TLS handshake and certificate information.</p> </div> </aside> <p>To display the origin certificate (assuming one is installed), replace <code dir="auto">203.0.113.34</code> below with the actual IP address of your origin web server and replace <code dir="auto">www.example.com</code> with your domain and hostname:</p> <div class="expressive-code"> <figure class="frame is-terminal not-content"> <figcaption class="header"> <span class="title"></span><span class="sr-only">Terminal window</span> </figcaption> <pre data-language="sh"><code> <div class="ec-line"> <div class="code"> <span style="--0:#57C78F;--1:#00783C">curl</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">-svo</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">/dev/null</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">https://www.example.com</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">--connect-to</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">::203.0.113.34</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">2>&1</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">|</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">egrep</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">-v</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"^{.*$|^}.*$|^* http.*$"</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="curl -svo /dev/null https://www.example.com --connect-to ::203.0.113.34 2>&1 | egrep -v "^{.*$|^}.*$|^* http.*$""> <div></div></button> </div> </figure> </div> <div tabindex="-1" class="heading-wrapper level-h4"> <h4 id="testing-tls-versions">Testing TLS Versions</h4><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#testing-tls-versions"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>If troubleshooting browser support or confirming what TLS versions are supported, curl allows you to test a specific TLS version by adding the <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://curl.se/docs/manpage.html%23--tlsv10" target="_blank" rel="noopener">--tlsv1.X<span class="external-link"> ↗</span></a> and <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://curl.se/docs/manpage.html%23--tls-max" target="_blank" rel="noopener">--tls-max<span class="external-link"> ↗</span></a> options to your curl:</p> <ul> <li><code dir="auto">--tlsv1.0 --tls-max 1.0</code></li> <li><code dir="auto">--tlsv1.1 --tls-max 1.1</code></li> <li><code dir="auto">--tlsv1.2 --tls-max 1.2</code></li> <li><code dir="auto">--tlsv1.3 --tls-max 1.3</code></li> </ul> <hr> <div tabindex="-1" class="heading-wrapper level-h2"> <h2 id="temporarily-pause-cloudflare">Temporarily pause Cloudflare</h2><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#temporarily-pause-cloudflare"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>For more details, refer to <a href="https://developers-cloudflare-com.translate.goog/fundamentals/setup/manage-domains/pause-cloudflare/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB">Pause Cloudflare</a>.</p> <hr> <div tabindex="-1" class="heading-wrapper level-h2"> <h2 id="perform-a-traceroute">Perform a traceroute</h2><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#perform-a-traceroute"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>Traceroute is a network diagnostic tool that measures the route latency of packets across a network. Most operating systems support the <code dir="auto">traceroute</code> command. If you experience connectivity issues with your Cloudflare-proxied website and <a href="https://developers-cloudflare-com.translate.goog/support/contacting-cloudflare-support/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB">ask Cloudflare Support for assistance</a>, ensure to provide output from a traceroute.</p> <aside aria-label="Note" class="starlight-aside starlight-aside--note"> <p class="starlight-aside__title" aria-hidden="true"> <svg viewbox="0 0 24 24" width="16" height="16" fill="currentColor" class="starlight-aside__icon"> <path d="M12 11C11.7348 11 11.4804 11.1054 11.2929 11.2929C11.1054 11.4804 11 11.7348 11 12V16C11 16.2652 11.1054 16.5196 11.2929 16.7071C11.4804 16.8946 11.7348 17 12 17C12.2652 17 12.5196 16.8946 12.7071 16.7071C12.8946 16.5196 13 16.2652 13 16V12C13 11.7348 12.8946 11.4804 12.7071 11.2929C12.5196 11.1054 12.2652 11 12 11ZM12.38 7.08C12.1365 6.97998 11.8635 6.97998 11.62 7.08C11.4973 7.12759 11.3851 7.19896 11.29 7.29C11.2017 7.3872 11.1306 7.49882 11.08 7.62C11.024 7.73868 10.9966 7.86882 11 8C10.9992 8.13161 11.0245 8.26207 11.0742 8.38391C11.124 8.50574 11.1973 8.61656 11.29 8.71C11.3872 8.79833 11.4988 8.86936 11.62 8.92C11.7715 8.98224 11.936 9.00632 12.099 8.99011C12.2619 8.97391 12.4184 8.91792 12.5547 8.82707C12.691 8.73622 12.8029 8.61328 12.8805 8.46907C12.9582 8.32486 12.9992 8.16378 13 8C12.9963 7.73523 12.8927 7.48163 12.71 7.29C12.6149 7.19896 12.5028 7.12759 12.38 7.08ZM12 2C10.0222 2 8.08879 2.58649 6.4443 3.6853C4.79981 4.78412 3.51809 6.3459 2.76121 8.17317C2.00433 10.0004 1.8063 12.0111 2.19215 13.9509C2.578 15.8907 3.53041 17.6725 4.92894 19.0711C6.32746 20.4696 8.10929 21.422 10.0491 21.8079C11.9889 22.1937 13.9996 21.9957 15.8268 21.2388C17.6541 20.4819 19.2159 19.2002 20.3147 17.5557C21.4135 15.9112 22 13.9778 22 12C22 10.6868 21.7413 9.38642 21.2388 8.17317C20.7363 6.95991 19.9997 5.85752 19.0711 4.92893C18.1425 4.00035 17.0401 3.26375 15.8268 2.7612C14.6136 2.25866 13.3132 2 12 2ZM12 20C10.4178 20 8.87104 19.5308 7.55544 18.6518C6.23985 17.7727 5.21447 16.5233 4.60897 15.0615C4.00347 13.5997 3.84504 11.9911 4.15372 10.4393C4.4624 8.88743 5.22433 7.46197 6.34315 6.34315C7.46197 5.22433 8.88743 4.4624 10.4393 4.15372C11.9911 3.84504 13.5997 4.00346 15.0615 4.60896C16.5233 5.21447 17.7727 6.23984 18.6518 7.55544C19.5308 8.87103 20 10.4177 20 12C20 14.1217 19.1572 16.1566 17.6569 17.6569C16.1566 19.1571 14.1217 20 12 20Z" /> </svg>Note</p> <div class="starlight-aside__content"> <p>Timeouts are possible for ping results because Cloudflare limits ping requests.</p> </div> </aside> <p>Review the instructions below for running traceroute on different operating systems. Replace <code dir="auto">www.example.com</code> with your domain and hostname in the examples below:</p> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="run-traceroute-on-windows">Run traceroute on Windows</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#run-traceroute-on-windows"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <ol> <li><p>Open the <strong>Start</strong> menu.</p></li> <li><p>Click <strong>Run</strong>.</p></li> <li><p>To open the command line interface, type <strong>cmd</strong> and then click <strong>OK</strong>.</p></li> <li><p>At the command line prompt, type:</p></li> </ol> <p>For IPv4 -</p> <div class="expressive-code"> <figure class="frame is-terminal not-content"> <figcaption class="header"> <span class="title"></span><span class="sr-only">Terminal window</span> </figcaption> <pre data-language="sh"><code> <div class="ec-line"> <div class="code"> <span style="--0:#57C78F;--1:#00783C">tracert</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">www.example.com</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="tracert www.example.com"> <div></div></button> </div> </figure> </div> <p>For IPv6 -</p> <div class="expressive-code"> <figure class="frame is-terminal not-content"> <figcaption class="header"> <span class="title"></span><span class="sr-only">Terminal window</span> </figcaption> <pre data-language="sh"><code> <div class="ec-line"> <div class="code"> <span style="--0:#57C78F;--1:#00783C">tracert</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">-6</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">www.example.com</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="tracert -6 www.example.com"> <div></div></button> </div> </figure> </div> <ol start="5"> <li><p>Press <strong>Enter</strong>.</p></li> <li><p>You can copy the results to save in a file or paste in another program.</p></li> </ol> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="run-traceroute-on-linux">Run traceroute on Linux</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#run-traceroute-on-linux"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <ol> <li><p>Open a terminal window.</p></li> <li><p>At the command line prompt, type:</p></li> </ol> <p>For IPv4 -</p> <div class="expressive-code"> <figure class="frame is-terminal not-content"> <figcaption class="header"> <span class="title"></span><span class="sr-only">Terminal window</span> </figcaption> <pre data-language="sh"><code> <div class="ec-line"> <div class="code"> <span style="--0:#57C78F;--1:#00783C">traceroute</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">www.example.com</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="traceroute www.example.com"> <div></div></button> </div> </figure> </div> <p>For IPv6 -</p> <div class="expressive-code"> <figure class="frame is-terminal not-content"> <figcaption class="header"> <span class="title"></span><span class="sr-only">Terminal window</span> </figcaption> <pre data-language="sh"><code> <div class="ec-line"> <div class="code"> <span style="--0:#57C78F;--1:#00783C">traceroute</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">-6</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">www.example.com</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="traceroute -6 www.example.com"> <div></div></button> </div> </figure> </div> <ol start="3"> <li>You can copy the results to save in a file or paste in another program.</li> </ol> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="run-traceroute-on-mac-os">Run traceroute on Mac OS</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#run-traceroute-on-mac-os"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <ol> <li>Open the <strong>Network Utility</strong> application.</li> <li>Click the <strong>Traceroute</strong> tab.</li> <li>Type the <em>domain</em> or <em>IP address</em> in the appropriate input field and press <strong>Trace</strong>.</li> <li>You can copy the results to save in a file or paste in another program.</li> </ol> <p>Alternatively, follow the same Linux traceroute instructions above when using the Mac OS terminal program.</p> <hr> <div tabindex="-1" class="heading-wrapper level-h2"> <h2 id="add-the-cf-ray-header-to-your-logs">Add the CF-RAY header to your logs</h2><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#add-the-cf-ray-header-to-your-logs"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>The <strong>CF-RAY</strong> header traces a website request through Cloudflare's network. Provide the <strong>CF-RAY</strong> of a web request to Cloudflare support when troubleshooting an issue. You can also add <strong>CF-RAY</strong> to your logs by editing your origin web server configuration with the snippet below that corresponds to your brand of web server:</p> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="for-apache-web-servers-add-cf-rayi-to-logformat">For Apache web servers, add <code dir="auto">%{CF-Ray}i</code> to LogFormat</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#for-apache-web-servers-add-cf-rayi-to-logformat"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <div class="expressive-code"> <figure class="frame not-content"> <figcaption class="header"></figcaption> <pre data-language="plaintext"><code> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-agent}i\" %{CF-Ray}i" cf_custom</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-agent}i\" %{CF-Ray}i" cf_custom"> <div></div></button> </div> </figure> </div> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="for-nginx-web-servers-add-http_cf_ray-to-log_format">For Nginx web servers, add '$http_cf_ray' to log_format</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#for-nginx-web-servers-add-http_cf_ray-to-log_format"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <div class="expressive-code"> <figure class="frame not-content"> <figcaption class="header"></figcaption> <pre data-language="plaintext"><code> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">log_format cf_custom '$remote_addr - $remote_user [$time_local] '</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">'"$request" $status $body_bytes_sent '</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">'"$http_referer" "$http_user_agent" '</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#eeffff;--1:#62676a">'$http_cf_ray';</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="log_format cf_custom '$remote_addr - $remote_user [$time_local] ''"$request" $status $body_bytes_sent ''"$http_referer" "$http_user_agent" ''$http_cf_ray';"> <div></div></button> </div> </figure> </div> <hr> <div tabindex="-1" class="heading-wrapper level-h2"> <h2 id="perform-a-mtr">Perform a MTR</h2><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#perform-a-mtr"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>Traceroute (MTR) is a tool that combines traceroute and ping, which is another common method for testing network connectivity and speed. In addition to the hops along the network path, MTR shows constantly updating information about the latency and packet loss along the route to the destination. This helps in troubleshooting network issues by allowing you to see what’s happening along the path in real-time.</p> <p>MTR works by discovering the network path in a similar manner to traceroute, and then regularly sending packets to continue collecting information to provide an updated view into the network’s health and speed.</p> <p>Like traceroute, MTR can use ICMP or UDP for outgoing packets but relies on ICMP for return (Type 11: Time Exceeded) packets.</p> <aside aria-label="Note" class="starlight-aside starlight-aside--note"> <p class="starlight-aside__title" aria-hidden="true"> <svg viewbox="0 0 24 24" width="16" height="16" fill="currentColor" class="starlight-aside__icon"> <path d="M12 11C11.7348 11 11.4804 11.1054 11.2929 11.2929C11.1054 11.4804 11 11.7348 11 12V16C11 16.2652 11.1054 16.5196 11.2929 16.7071C11.4804 16.8946 11.7348 17 12 17C12.2652 17 12.5196 16.8946 12.7071 16.7071C12.8946 16.5196 13 16.2652 13 16V12C13 11.7348 12.8946 11.4804 12.7071 11.2929C12.5196 11.1054 12.2652 11 12 11ZM12.38 7.08C12.1365 6.97998 11.8635 6.97998 11.62 7.08C11.4973 7.12759 11.3851 7.19896 11.29 7.29C11.2017 7.3872 11.1306 7.49882 11.08 7.62C11.024 7.73868 10.9966 7.86882 11 8C10.9992 8.13161 11.0245 8.26207 11.0742 8.38391C11.124 8.50574 11.1973 8.61656 11.29 8.71C11.3872 8.79833 11.4988 8.86936 11.62 8.92C11.7715 8.98224 11.936 9.00632 12.099 8.99011C12.2619 8.97391 12.4184 8.91792 12.5547 8.82707C12.691 8.73622 12.8029 8.61328 12.8805 8.46907C12.9582 8.32486 12.9992 8.16378 13 8C12.9963 7.73523 12.8927 7.48163 12.71 7.29C12.6149 7.19896 12.5028 7.12759 12.38 7.08ZM12 2C10.0222 2 8.08879 2.58649 6.4443 3.6853C4.79981 4.78412 3.51809 6.3459 2.76121 8.17317C2.00433 10.0004 1.8063 12.0111 2.19215 13.9509C2.578 15.8907 3.53041 17.6725 4.92894 19.0711C6.32746 20.4696 8.10929 21.422 10.0491 21.8079C11.9889 22.1937 13.9996 21.9957 15.8268 21.2388C17.6541 20.4819 19.2159 19.2002 20.3147 17.5557C21.4135 15.9112 22 13.9778 22 12C22 10.6868 21.7413 9.38642 21.2388 8.17317C20.7363 6.95991 19.9997 5.85752 19.0711 4.92893C18.1425 4.00035 17.0401 3.26375 15.8268 2.7612C14.6136 2.25866 13.3132 2 12 2ZM12 20C10.4178 20 8.87104 19.5308 7.55544 18.6518C6.23985 17.7727 5.21447 16.5233 4.60897 15.0615C4.00347 13.5997 3.84504 11.9911 4.15372 10.4393C4.4624 8.88743 5.22433 7.46197 6.34315 6.34315C7.46197 5.22433 8.88743 4.4624 10.4393 4.15372C11.9911 3.84504 13.5997 4.00346 15.0615 4.60896C16.5233 5.21447 17.7727 6.23984 18.6518 7.55544C19.5308 8.87103 20 10.4177 20 12C20 14.1217 19.1572 16.1566 17.6569 17.6569C16.1566 19.1571 14.1217 20 12 20Z" /> </svg>Note</p> <div class="starlight-aside__content"> <p>For MacOS users, MTR can be installed through <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://formulae.brew.sh/formula/mtr" target="_blank" rel="noopener">homebrew<span class="external-link"> ↗</span></a>. For Windows users, see <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://github.com/White-Tiger/WinMTR/releases" target="_blank" rel="noopener">WinMTR<span class="external-link"> ↗</span></a>.</p> </div> </aside> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="how-do-i-use-mtr-to-generate-network-path-report">How do I use MTR to generate network path report?</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#how-do-i-use-mtr-to-generate-network-path-report"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p><strong>Using MTR on NIX based machines</strong></p> <p>Generally, we'd use MTR as the following:</p> <div class="expressive-code"> <figure class="frame is-terminal not-content"> <figcaption class="header"> <span class="title"></span><span class="sr-only">Terminal window</span> </figcaption> <pre data-language="sh"><code> <div class="ec-line"> <div class="code"> <span style="--0:#57C78F;--1:#00783C">mtr</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">-rw</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00"><dest_hostname></span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">e.g.:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">mtr</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">-rw</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">one.one.one.one</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="mtr -rw <dest_hostname> e.g.: mtr -rw one.one.one.one"> <div></div></button> </div> </figure> </div> <p>or with destination IP:</p> <div class="expressive-code"> <figure class="frame is-terminal not-content"> <figcaption class="header"> <span class="title"></span><span class="sr-only">Terminal window</span> </figcaption> <pre data-language="sh"><code> <div class="ec-line"> <div class="code"> <span style="--0:#57C78F;--1:#00783C">mtr</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">-rw</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00"><dest_IP></span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">e.g.:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">mtr</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">-rw</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#8EA7ED;--1:#00268F">1.1.1.1</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="mtr -rw <dest_IP> e.g.: mtr -rw 1.1.1.1"> <div></div></button> </div> </figure> </div> <p>Please refer to this documentation, which explains more about analysing MTR: <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://www.cloudflare.com/en-gb/learning/network-layer/what-is-mtr/" target="_blank" rel="noopener">How to read MTR<span class="external-link"> ↗</span></a>.</p> <hr> <div tabindex="-1" class="heading-wrapper level-h2"> <h2 id="run-packet-captures">Run Packet Captures</h2><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#run-packet-captures"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p><strong>Why and when do you need Packet Captures?</strong></p> <p>Issues that happen at the layers 3/4 occur before requests reaching Cloudflare's logging system, so they do not show up in the HTTP logs. Therefore, troubleshooting issues related to connection resets, packet loss or SSL handshake failures can be tricky without a deep investigation at the packet level.</p> <p>Some HTTP errors generated by Cloudflare, such as <a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/cloudflare-errors/troubleshooting-cloudflare-5xx-errors/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#error-520-web-server-returns-an-unknown-error">520s</a>, <a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/cloudflare-errors/troubleshooting-cloudflare-5xx-errors/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#error-524-a-timeout-occurred">524s</a> and <a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/cloudflare-errors/troubleshooting-cloudflare-5xx-errors/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#error-525-ssl-handshake-failed">525s</a>, show underlying issues at layers 3/4, and might require a packet capture for further investigation.</p> <p><strong>How to Run a Packet Capture</strong></p> <aside aria-label="Warning" class="starlight-aside starlight-aside--caution"> <p class="starlight-aside__title" aria-hidden="true"> <svg viewbox="0 0 24 24" width="16" height="16" fill="currentColor" class="starlight-aside__icon"> <path d="M12 16C11.8022 16 11.6089 16.0587 11.4444 16.1686C11.28 16.2784 11.1518 16.4346 11.0761 16.6173C11.0004 16.8001 10.9806 17.0011 11.0192 17.1951C11.0578 17.3891 11.153 17.5673 11.2929 17.7071C11.4327 17.847 11.6109 17.9422 11.8049 17.9808C11.9989 18.0194 12.2 17.9996 12.3827 17.9239C12.5654 17.8482 12.7216 17.72 12.8315 17.5556C12.9413 17.3911 13 17.1978 13 17C13 16.7348 12.8946 16.4805 12.7071 16.2929C12.5196 16.1054 12.2652 16 12 16ZM22.67 17.47L14.62 3.47003C14.3598 3.00354 13.9798 2.61498 13.5192 2.3445C13.0586 2.07401 12.5341 1.9314 12 1.9314C11.4659 1.9314 10.9414 2.07401 10.4808 2.3445C10.0202 2.61498 9.64019 3.00354 9.38 3.47003L1.38 17.47C1.11079 17.924 0.966141 18.441 0.960643 18.9688C0.955144 19.4966 1.089 20.0166 1.34868 20.4761C1.60837 20.9356 1.9847 21.3185 2.43968 21.5861C2.89466 21.8536 3.41218 21.9964 3.94 22H20.06C20.5921 22.0053 21.1159 21.8689 21.5779 21.6049C22.0399 21.341 22.4234 20.9589 22.689 20.4978C22.9546 20.0368 23.0928 19.5134 23.0895 18.9814C23.0862 18.4493 22.9414 17.9277 22.67 17.47ZM20.94 19.47C20.8523 19.626 20.7245 19.7556 20.5697 19.8453C20.4149 19.935 20.2389 19.9815 20.06 19.98H3.94C3.76111 19.9815 3.5851 19.935 3.43032 19.8453C3.27553 19.7556 3.14765 19.626 3.06 19.47C2.97223 19.318 2.92602 19.1456 2.92602 18.97C2.92602 18.7945 2.97223 18.622 3.06 18.47L11.06 4.47003C11.1439 4.30623 11.2714 4.16876 11.4284 4.07277C11.5855 3.97678 11.766 3.92599 11.95 3.92599C12.134 3.92599 12.3145 3.97678 12.4716 4.07277C12.6286 4.16876 12.7561 4.30623 12.84 4.47003L20.89 18.47C20.9892 18.6199 21.0462 18.7937 21.055 18.9732C21.0638 19.1527 21.0241 19.3312 20.94 19.49V19.47ZM12 8.00003C11.7348 8.00003 11.4804 8.10538 11.2929 8.29292C11.1054 8.48046 11 8.73481 11 9.00003V13C11 13.2652 11.1054 13.5196 11.2929 13.7071C11.4804 13.8947 11.7348 14 12 14C12.2652 14 12.5196 13.8947 12.7071 13.7071C12.8946 13.5196 13 13.2652 13 13V9.00003C13 8.73481 12.8946 8.48046 12.7071 8.29292C12.5196 8.10538 12.2652 8.00003 12 8.00003Z" /> </svg>Warning</p> <div class="starlight-aside__content"> <p>Please be aware, if you transmit any sensitive information while a packet capture is running, it will be recorded.</p> </div> </aside> <p>Cloudflare suggests <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://www.wireshark.org/download.html" target="_blank" rel="noopener">Wireshark<span class="external-link"> ↗</span></a> for running packet captures. For instructions on how to use the <em>tcpdump</em> command line, refer to <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://www.wireshark.org/docs/wsug_html_chunked/AppToolstcpdump.html" target="_blank" rel="noopener">this<span class="external-link"> ↗</span></a> article.</p> <ol> <li>Close all programs/browser tabs that could be sending data in the background to avoid having to use a lot of display filters later.</li> <li>Create your Wireshark capture filter (refer to <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://wiki.wireshark.org/CaptureFilters" target="_blank" rel="noopener">this<span class="external-link"> ↗</span></a> article for more information).</li> <li>Select the appropriate interface (e.g. Wi-Fi: en0). If you're not sure which interface to use, Wireshark provides an I/O graph of each interface to give you a hint.</li> <li>Click the blue shark fin icon in the top left-hand corner to start your packet capture.</li> <li>Reproduce the issue while running capture.</li> <li>Click the red square icon in the top left-hand corner to stop your packet capture.</li> <li>Save as a <code dir="auto">.pcap</code> file and attach it to your support ticket.</li> </ol> <hr> <div tabindex="-1" class="heading-wrapper level-h2"> <h2 id="related-resources">Related resources</h2><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#related-resources"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <ul> <li><a href="https://developers-cloudflare-com.translate.goog/support/contacting-cloudflare-support/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB">Contacting Cloudflare Support</a></li> <li><a href="https://developers-cloudflare-com.translate.goog/support/troubleshooting/cloudflare-errors/troubleshooting-cloudflare-5xx-errors/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB">Troubleshooting Cloudflare HTTP 5XX errors</a></li> <li><a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://www.cloudflare.com/en-gb/learning/network-layer/what-is-mtr/" target="_blank" rel="noopener">Diagnosing network issues with MTR and traceroute<span class="external-link"> ↗</span></a></li> <li><a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://curl.haxx.se/" target="_blank" rel="noopener">cURL command line tool<span class="external-link"> ↗</span></a></li> </ul> </div> <div class="astro-fxeopwe4"> <div class="feedback-prompt astro-fxeopwe4"> <astro-island uid="ZcQfTO" prefix="r0" component-url="/_astro/FeedbackPrompt.sIVdSYEF.js" component-export="default" renderer-url="/_astro/client.BUsrUfVi.js" props="{}" ssr client="idle" opts="{"name":"FeedbackPrompt","value":true}" await-children> <div> <h2>Was this helpful?</h2><button class="cursor-pointer bg-transparent"> <svg stroke="currentColor" fill="currentColor" stroke-width="0" viewbox="0 0 24 24" class="text-2xl text-sl hover:text-accent" height="1em" width="1em" xmlns="http://www.w3.org/2000/svg"> <path fill="none" d="M0 0h24v24H0V0zm0 0h24v24H0V0z" /><path d="M9 21h9c.83 0 1.54-.5 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