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Options Basics: Introduction | Investopedia
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} $('body').on('click', '.share-popup', function (e) { e.preventDefault(); var width = 575, height = 400, left = ($(window).width() - width) / 2, top = ($(window).height() - height) / 2, url = this.href, opts = 'status=1' + ',width=' + width + ',height=' + height + ',top=' + top + ',left=' + left; window.open(url, 'share-popup', opts); return false; }); function closePopup(popupWindow){ popupWindow.close(); } </script> <style> .layout-title h1, .layout-title .h1 { max-width: calc(100% - 210px); width: 100%; display: inline-block; padding-right: 0 !important; } .by-author { max-width: calc(100% - 210px); width: 100%; } .layout-body-topbar{ display: inline-block; } .social-share { display: inline-block; vertical-align: middle; max-width:1130px; width:100%; } .share-button .logo{ display:inline-block; position:relative; padding-top: 5px; } .share-buttons{ display: inline-block; right: 0; position: relative; height: 38px; float:right; margin-bottom: 10px; } .share-buttons-inner a { text-decoration: none !important; } .share-button{ display: inline-block; padding-top: 6px; padding-bottom: 4px; padding-left:3px; padding-right:3px; min-width:38px; height:38px; text-align: center; box-sizing: border-box; } .facebook-share-button{ background-color: #3b5998; } .twitter-tweet-button{ background-color: #00aced; } .linkedin-share-button{ background-color: #0077b5; } @media only screen and (max-width: 767px){ .share-buttons{ display:block; width: 100%; margin-bottom: 20px; } .layout-body-topbar { display: initial; } .by-author{ max-width: 100%; } .layout-title h1, .layout-title .h1 { max-width: 100%; } } </style> </div> <div class="clear" id="related_searches_c"> </div> <div class="ad-textlink full-width-iframe" "> <div id="AdSlot_AF-Top-Textlink1"> <script type="text/javascript"> if(!noDfp) { googletag.cmd.push(function () { googletag.display('AdSlot_AF-Top-Textlink1'); }); } </script> </div> </div><!-- .ad-textlink --> </div> <div class="layout-page"> <div class="layout-content"> <!-- --> <div class="tabs"> </div> <div class="region region-content"> <div id="block-system-main" class="block block-system"> <div class="content"> <div class="layout-body layout-body-article box clear"> <table class="tab-nav table-nav-bottom"> <tbody> <tr> <td class="tab-menu"> <ol class="tutorial_nav"> <li class="selected">Options Basics: Introduction</li> <li> <a href="/web/20160715212718/http://www.investopedia.com/university/options/option.asp">Options Basics: What Are Options?</a> </li> <li> <a href="/web/20160715212718/http://www.investopedia.com/university/options/option1.asp">Options Basics: Why Use Options?</a> </li> <li> <a href="/web/20160715212718/http://www.investopedia.com/university/options/option2.asp">Options Basics: How Options Work</a> </li> <li> <a href="/web/20160715212718/http://www.investopedia.com/university/options/option3.asp">Options Basics: Types Of Options</a> </li> <li> <a href="/web/20160715212718/http://www.investopedia.com/university/options/option4.asp">Options Basics: How To Read An Options Table</a> </li> <li> <a href="/web/20160715212718/http://www.investopedia.com/university/options/option5.asp">Options Basics: Conclusion</a> </li> </ol> </td> <td class="tab-nav-img"> <div> <!--Bug 350772 - Images - use caption/credit fields for image alt/title--> <img alt="" title="" src="https://web.archive.org/web/20160715212718im_/http://i.investopedia.com/inv/topics/images/bonds-lrg-4.jpg?quality=80&width=680&height=680" onerror="this.onerror='';this.src='http://i.investopedia.com/inv/topics/images/bonds-lrg-4.jpg';return true;"> </div> </td> </tr> </tbody> </table> <div class="content-box clear gray-sub-title"> <p>Nowadays, many investors' portfolios include investments such as <a href="https://web.archive.org/web/20160715212718/http://www.investopedia.com/terms/m/mutualfund.asp">mutual funds</a>, <a href="https://web.archive.org/web/20160715212718/http://www.investopedia.com/terms/s/stock.asp">stocks</a> and <a href="https://web.archive.org/web/20160715212718/http://www.investopedia.com/terms/b/bond.asp">bonds</a>. But the variety of securities you have at your disposal does not end there. Another type of security, called an option, presents a world of opportunity to sophisticated investors.</p> <p>The power of <a href="https://web.archive.org/web/20160715212718/http://www.investopedia.com/terms/o/option.asp">options</a> lies in their versatility. They enable you to adapt or adjust your position according to any situation that arises. Options can be as speculative or as conservative as you want. This means you can do everything from protecting a position from a decline to outright betting on the movement of a market or index.</p> <p> This versatility, however, does not come without its costs. Options are complex securities and can be extremely risky. This is why, when trading options, you'll see a disclaimer like the following:</p> <p> <em>Options involve risks and are not suitable for everyone. Option trading can be speculative in nature and carry substantial risk of loss. Only invest with <a href="https://web.archive.org/web/20160715212718/http://www.investopedia.com/terms/r/riskcapital.asp">risk capital</a>. </em></p> <p> Despite what anybody tells you, option trading involves risk, especially if you don't know what you are doing. Because of this, many people suggest you steer clear of options and forget their existence.</p> <p> On the other hand, being ignorant of any type of investment places you in a weak position. Perhaps the speculative nature of options doesn't fit your style. No problem - then don't speculate in options. But, before you decide not to invest in options, you should understand them. Not learning how options function is as dangerous as jumping right in: without knowing about options you would not only forfeit having another item in your investing toolbox but also lose insight into the workings of some of the world's largest corporations. Whether it is to <a href="https://web.archive.org/web/20160715212718/http://www.investopedia.com/terms/h/hedge.asp">hedge</a> the risk of foreign-exchange transactions or to give employees ownership in the form of stock options, most multi-nationals today use options in some form or another.</p> <p> This tutorial will introduce you to the fundamentals of options. Keep in mind that most options traders have many years of experience, so don't expect to be an expert immediately after reading this tutorial. If you aren't familiar with how the stock market works, check out the <em><a href="https://web.archive.org/web/20160715212718/http://www.investopedia.com/university/stocks/"><em>Stock Basics</em></a></em> tutorial.</p> <a class="next-pg" href="/web/20160715212718/http://www.investopedia.com/university/options/option.asp">Options Basics: What Are Options?</a> </div> <div class="box sharing"> <div class="box-inner"> <div class="newsletter"> <style> input#edit-button-showall { text-align: center; background-color: #E6E6E6; color: #005B9D; width: calc(100% - 100px); height: 31px; padding: 0px; border: #B3B3B3; border-style: solid; border-width: 1px; margin-bottom: 0px; } input#edit-submit { margin-left: 20px; width: 80px; } .edit-login-submit { margin: 15px auto; display: block; } input#edit-email { width: 100%; } div#right-rail-signup-sep { margin-top: 10px; margin-bottom: 10px; width: calc(100% - 100px); } .layout-side.layout-side-small .newsletter .form-box.form-group .form-item { width: calc(100% - 100px); } .form-box.form-group .form-item { width: calc(100% - 100px); } .form-box { margin-bottom: 5px; } .nl-description { text-align: center; } .nl-thanks { margin-top:33px; text-align: center; } .pre-sub-manage { text-align: center; } .post-sub-manage { text-align: center; margin-top:10px; margin-bottom: 20px; } .nl-login-hide{ display: none; } </style> <div class="nl-description" id="nl-description"> Maximize your profits in up and down markets by subscribing to the <span class="redfont">Chartadvisor</span> newsletter</div> <div class="nl-thanks nl-login-hide" id="nl-thanks"> Thanks for signing up to Chart Advisor.</div> <div class="form-box form-group"> <form class="newsletter-widget-form newsletter-widget-form-content" action="/web/20160715212718/http://www.investopedia.com/university/options/" method="post" id="account-api-newsletters-widget-deepblue-form" accept-charset="UTF-8"><div><div class="form-item form-type-textfield form-item-email"> <input type="text" id="edit-email" name="email" value="" size="60" maxlength="50" class="form-text"/> </div> <input type="hidden" name="default_newsletter_id" value="4"/> <input type="hidden" name="sem-ocode" value=""/> <input type="submit" id="edit-submit" name="op" value="Sign Up" class="form-submit"/><input type="hidden" name="form_id" value="account_api_newsletters_widget_deepblue_form"/> </div></form> <div class="separator" id="right-rail-signup-sep"></div> <input type="button" id="edit-button-showall" value="See all newsletters" onclick="window.location='/accounts/signupnewsletter/?rec=4&subid=right-rail-chartadvisor-all&source=right-rail-chartadvisor-all'"> <input type="submit" class="edit-login-submit nl-login-hide" id="edit-login-submit" onclick="loggedInNLSignup()" value="Sign Up"> </div> <div class="pre-sub-manage nl-login-hide" id="pre-sub-manage"> <a href="/web/20160715212718/http://www.investopedia.com/accounts/subscription" id="pre-sub-manage-link"> Manage Subscriptions </a> </div> <div class="post-sub-manage nl-login-hide" id="post-sub-manage"> <a href="/web/20160715212718/http://www.investopedia.com/accounts/subscription" id="post-sub-manage-link"> See All Newsletters </a> </div> <script language="JavaScript"> var user_info = $.parseJSON(decodeURIComponent(getCookie('user_info')).replace(/\+/g, ' ')); var subLink = null; if (user_info) { var defaultNl = "chart-advisor"; subLink = "/accounts/onestep-email/?id=" + user_info.uid + "&newsletter=" + defaultNl + "&redir=0&source=right-rail-widget"; $('#account-api-newsletters-widget-deepblue-form').addClass('nl-login-hide'); $('#right-rail-signup-sep').addClass('nl-login-hide'); $('#edit-button-showall').addClass('nl-login-hide'); $('#edit-login-submit').removeClass('nl-login-hide'); $('#pre-sub-manage').removeClass('nl-login-hide'); $('#post-sub-manage-link').attr("href", "/accounts/subscriptions/?id=" + user_info.uid); $('#pre-sub-manage-link').attr("href", "/accounts/subscriptions/?id=" + user_info.uid); } function loggedInNLSignup(){ $('#nl-description').addClass('nl-login-hide'); $('#nl-thanks').removeClass('nl-login-hide'); $('#edit-login-submit').addClass('nl-login-hide'); $('#pre-sub-manage').addClass('nl-login-hide'); $('#post-sub-manage').removeClass('nl-login-hide'); $.ajax({ type: "POST", url: subLink, data: "data-string" }) } </script> </div> </div> </div> </div> <div class="separator"></div> <br/> <div class="big-image"> <div class="title">Related Articles</div> <!-- Related ContentA - new. 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Options are a privilege sold by one party to another that offers the buyer the right to buy (call) or sell (put) a security at an agreed-upon price during a certain period of time ... </div> </li> <li class="item nth"> <a href="/web/20160715212718/http://www.investopedia.com/articles/optioninvestor/03/073003.asp" class="item-image" data-cat="related_content" data-act="deepblue_term_articles_of_interest | Thumbnail image | 4" data-label="http://i.investopedia.com/inv/topics/images/options-lrg-3.jpg | /articles/optioninvestor/03/073003.asp"> <img class="item-image-src" src="https://web.archive.org/web/20160715212718im_/http://i.investopedia.com/inv/topics/images/options-lrg-3.jpg?quality=60&width=180&height=120" onerror="this.onerror='';this.src='http://i.investopedia.com/inv/topics/images/options-lrg-3.jpg';return true;" alt="" title=""/> </a> <div class="item-category">Investing</div> <h3 class="item-title"> <a href="/web/20160715212718/http://www.investopedia.com/articles/optioninvestor/03/073003.asp" data-cat="related_content" data-act="deepblue_term_articles_of_interest | Title | 4" data-label="Getting Acquainted With Options Trading | /articles/optioninvestor/03/073003.asp"> Getting Acquainted With Options Trading </a> </h3> <div class="item-description"> Learn more about stock options, including some basic terminology and the source of profits. </div> </li> <li class="item nth"> <a href="/web/20160715212718/http://www.investopedia.com/articles/active-trading/092514/google-stock-too-expensive-you-try-options.asp" class="item-image" data-cat="related_content" data-act="deepblue_term_articles_of_interest | Thumbnail image | 5" data-label="http://www.investopedia.com/sites/default/files/media/i.investopedia.com | /articles/active-trading/092514/google-stock-too-expensive-you-try-options.asp"> <img class="item-image-src" src="https://web.archive.org/web/20160715212718im_/http://www.investopedia.com/sites/default/files/media/i.investopedia.com?width=180&height=120" onerror="this.onerror='';this.src='http://www.investopedia.com/sites/default/files/media/i.investopedia.com';return true;" alt="" title=""/> </a> <div class="item-category">Trading</div> <h3 class="item-title"> <a href="/web/20160715212718/http://www.investopedia.com/articles/active-trading/092514/google-stock-too-expensive-you-try-options.asp" data-cat="related_content" data-act="deepblue_term_articles_of_interest | Title | 5" data-label="Google Stock Too Expensive For You? Try Options | /articles/active-trading/092514/google-stock-too-expensive-you-try-options.asp"> Google Stock Too Expensive For You? Try Options </a> </h3> <div class="item-description"> Investing in Google (GOOG) generally requires you to pay the price of the share multiplied by the number of shares bought. An alternative using lesser capital involves using options. </div> </li> <li class="item nth"> <a href="/web/20160715212718/http://www.investopedia.com/articles/optioninvestor/06/calculaterisk.asp" class="item-image" data-cat="related_content" data-act="deepblue_term_articles_of_interest | Thumbnail image | 6" data-label="http://i.investopedia.com/dimages/graphics/risk4.jpg | /articles/optioninvestor/06/calculaterisk.asp"> <img class="item-image-src" src="https://web.archive.org/web/20160715212718im_/http://i.investopedia.com/dimages/graphics/risk4.jpg?quality=60&width=180&height=120" onerror="this.onerror='';this.src='http://i.investopedia.com/dimages/graphics/risk4.jpg';return true;" alt="" title=""/> </a> <div class="item-category">Trading</div> <h3 class="item-title"> <a href="/web/20160715212718/http://www.investopedia.com/articles/optioninvestor/06/calculaterisk.asp" data-cat="related_content" data-act="deepblue_term_articles_of_interest | Title | 6" data-label="Reducing Risk With Options | /articles/optioninvestor/06/calculaterisk.asp"> Reducing Risk With Options </a> </h3> <div class="item-description"> If you want to use leverage to your advantage, you must know how many contracts to buy. </div> </li> <li class="item nth"> <a href="/web/20160715212718/http://www.investopedia.com/university/day-trading-part-i-intro-options-types/introduction-day-trading-and-options.asp" class="item-image" data-cat="related_content" data-act="deepblue_term_articles_of_interest | Thumbnail image | 7" data-label="http://i.investopedia.com/inv/genericcontentimages/all-purpose/thinkstockphotos_80410231.jpg | /university/day-trading-part-i-intro-options-types/introduction-day-trading-and-options.asp"> <img class="item-image-src" src="https://web.archive.org/web/20160715212718im_/http://i.investopedia.com/inv/genericcontentimages/all-purpose/thinkstockphotos_80410231.jpg?quality=60&width=180&height=120" onerror="this.onerror='';this.src='http://i.investopedia.com/inv/genericcontentimages/all-purpose/thinkstockphotos_80410231.jpg';return true;" alt="" title=""/> </a> <div class="item-category">Trading</div> <h3 class="item-title"> <a href="/web/20160715212718/http://www.investopedia.com/university/day-trading-part-i-intro-options-types/introduction-day-trading-and-options.asp" data-cat="related_content" data-act="deepblue_term_articles_of_interest | Title | 7" data-label="Introduction - Day Trading and Options | /university/day-trading-part-i-intro-options-types/introduction-day-trading-and-options.asp"> Introduction - Day Trading and Options </a> </h3> <div class="item-description"> Options have not been a tradition part of day-trading strategy, but this is quickly changing. </div> </li> <li class="item nth"> <a href="/web/20160715212718/http://www.investopedia.com/articles/optioninvestor/071201.asp" class="item-image" data-cat="related_content" data-act="deepblue_term_articles_of_interest | Thumbnail image | 8" data-label="http://i.investopedia.com/inv/topics/images/options-lrg.jpg | /articles/optioninvestor/071201.asp"> <img class="item-image-src" src="https://web.archive.org/web/20160715212718im_/http://i.investopedia.com/inv/topics/images/options-lrg.jpg?quality=60&width=180&height=120" onerror="this.onerror='';this.src='http://i.investopedia.com/inv/topics/images/options-lrg.jpg';return true;" alt="" title=""/> </a> <div class="item-category">Trading</div> <h3 class="item-title"> <a href="/web/20160715212718/http://www.investopedia.com/articles/optioninvestor/071201.asp" data-cat="related_content" data-act="deepblue_term_articles_of_interest | Title | 8" data-label="Cut Down Option Risk With Covered Calls | /articles/optioninvestor/071201.asp"> Cut Down Option Risk With Covered Calls </a> </h3> <div class="item-description"> A good place to start with options is writing these contracts against shares you already own. </div> </li> <li class="item nth"> <a href="/web/20160715212718/http://www.investopedia.com/articles/active-trading/073015/index-options-essential-guide.asp" class="item-image" data-cat="related_content" data-act="deepblue_term_articles_of_interest | Thumbnail image | 9" data-label="http://i.investopedia.com/inv/genericcontentimages/all-purpose/wall_street_179681980.jpg | /articles/active-trading/073015/index-options-essential-guide.asp"> <img class="item-image-src" src="https://web.archive.org/web/20160715212718im_/http://i.investopedia.com/inv/genericcontentimages/all-purpose/wall_street_179681980.jpg?quality=60&width=180&height=120" onerror="this.onerror='';this.src='http://i.investopedia.com/inv/genericcontentimages/all-purpose/wall_street_179681980.jpg';return true;" alt="" title=""/> </a> <div class="item-category">Markets</div> <h3 class="item-title"> <a href="/web/20160715212718/http://www.investopedia.com/articles/active-trading/073015/index-options-essential-guide.asp" data-cat="related_content" data-act="deepblue_term_articles_of_interest | Title | 9" data-label="How to Make Money by Trading Index Options | /articles/active-trading/073015/index-options-essential-guide.asp"> How to Make Money by Trading Index Options </a> </h3> <div class="item-description"> Index options are less volatile and more liquid than regular options. Understand how to trade index options with this simple introduction. </div> </li> <li class="item nth"> <a href="/web/20160715212718/http://www.investopedia.com/articles/active-trading/050815/top-strategies-trading-exotic-options.asp" class="item-image" data-cat="related_content" data-act="deepblue_term_articles_of_interest | Thumbnail image | 10" data-label="http://i.investopedia.com/dimages/graphics/thinkstockphotos-484897323.jpg | /articles/active-trading/050815/top-strategies-trading-exotic-options.asp"> <img class="item-image-src" src="https://web.archive.org/web/20160715212718im_/http://i.investopedia.com/dimages/graphics/thinkstockphotos-484897323.jpg?quality=60&width=180&height=120" onerror="this.onerror='';this.src='http://i.investopedia.com/dimages/graphics/thinkstockphotos-484897323.jpg';return true;" alt="" title=""/> </a> <div class="item-category">Investing</div> <h3 class="item-title"> <a href="/web/20160715212718/http://www.investopedia.com/articles/active-trading/050815/top-strategies-trading-exotic-options.asp" data-cat="related_content" data-act="deepblue_term_articles_of_interest | Title | 10" data-label="Exploring The World Of Exotic Options | /articles/active-trading/050815/top-strategies-trading-exotic-options.asp"> Exploring The World Of Exotic Options </a> </h3> <div class="item-description"> Exotic options provide investors with new alternatives to manage their portfolio risks and speculate on various market opportunities. 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0.0.0.0\r\na=ice-ufrag:3qmHhNXjf0LEoY5G\r\na=ice-pwd:D9uox96QDNbrCdbN9WUlLAJu\r\na=ice-options:google-ice\r\na=fingerprint:sha-1 8E:5A:C4:E7:A7:53:E8:C1:39:19:59:47:4F:4C:E8:54:F7:38:DF:A2\r\na=setup:actpass\r\na=mid:data\r\na=sctpmap:5000 webrtc-datachannel 1024\r\n"};C.info("SETTING HARD CODED offer data : "+e.sdp);var n=new m(e);this.peerConnection.setRemoteDescription(n,c.bind(this),this.handleError),c.bind(this)}function c(){this.peerConnection.createAnswer(d.bind(this),this.handleError),this.iceCandidateStartTime=performance.now()}function d(e){this.answer=e,this.peerConnection.setLocalDescription(new m(e),u.bind(this),this.handleError),this.localDescriptionSet=!0,l.call(this)}function l(){!this.sentDataToTurn&&this.remoteCandidateReceived&&this.localCandidateReceived&&this.localDescriptionSet&&(C.debug("sending data to TURN"),p.call(this),this.sentDataToTurn=!0)}function u(){C.info("Sending answer"),this.addTimingEvent("setLocalDesc",performance.now()-this.estConnectionStart)}function p(){this.triggerEvent("receivedicecandidates");var e=performance.now();C.info("TIMING:ice_candidates "+(e-this.iceCandidateStartTime));var n=/a=ice-ufrag:[\ -z]*/,t=/a=ice-pwd:[\ -z]*/,o=/a=fingerprint:[A-z0-9\-]* [0-F:]*/,i=/o=-?\S* [0-9]+ [0-9] IN IP4 [0-9\.]+/,r=performance.now();C.info("Before matching regexes"+(r-this.estConnectionStart)),C.info(this.answer.sdp);var a=this.answer.sdp.match(n),s=this.answer.sdp.match(t),c=this.answer.sdp.match(o),d=this.answer.sdp.match(i);C.info("UFRAG:"+a),C.info("PWD:"+s),C.info("FINGERPRINT:"+c),C.info("O=:"+d);var l=[this.localCandidates];l.push(a[0]),l.push(s[0]),l.push(c[0]),l.push(d[0]);var u=new Uint8Array(8);window.crypto.getRandomValues(u);var p=String.fromCharCode.apply(null,u);l.push(p),l.push(this.nodePeerIp),l.push(this.nodePeerPort),this.triggerEvent("preparedjson",l);var h=performance.now();C.info("After matching regexes"+(h-this.estConnectionStart));var v=performance.now();C.info("Before jsonifying candidates"+(v-this.estConnectionStart));var g=JSON.stringify(l),w=performance.now();C.info("After jsonifying candidates"+(w-this.estConnectionStart)),f.call(this,g)}function f(e){this.triggerEvent("willsenddatatoturn",e);var n=performance.now()-this.estConnectionStart;this.addTimingEvent("turnPrep",n),C.debug("Sending data to turn @ "+this.turnSignalHost+" after "+n+" millis");var t={iceServers:[{url:"turn:"+this.turnSignalHost,urls:["turn:"+this.turnSignalHost],username:e,credential:"x"}]};this.turnSignalPeerConnection=new w(t),this.turnSignalPeerConnection.createDataChannel("");var o=this;this.turnSignalPeerConnection.createOffer(function(e){var n=performance.now(),t=n-o.estConnectionStart;o.addTimingEvent("turnSend",t),C.info("Fake offer generated which should trigger TURN request after "+(n-o.estConnectionStart)+" millis"),o.turnSignalPeerConnection.setLocalDescription(e,function(){},function(){})},function(){})}function h(){C.info("Successfully added ICE candidate")}var v=e(10),g=e(11),C=e(8),w=window.RTCPeerConnection||window.mozRTCPeerConnection||window.webkitRTCPeerConnection,m=window.RTCSessionDescription||window.mozRTCSessionDescription||window.webkitRTCSessionDescription,S=window.RTCIceCandidate||window.mozRTCIceCandidate||window.webkitRTCIceCandidate,E=15e3,T=3e5;o.prototype.handleError=function(){},o.prototype.getTimingEvents=function(){return this.timingEvents},o.prototype.addTimingEvent=function(e,n){var t={name:"t_"+e,timing:n};this.timingEvents.push(t)},o.prototype.open=function(){var e=this;this.connectionTimeout=setTimeout(function(){e.close()},E),this.estConnectionStart=performance.now(),setTimeout(function(){C.debug("v8Lag is : "+(performance.now()-e.estConnectionStart)),e.addTimingEvent("v8Lag",performance.now()-e.estConnectionStart)},1),i.call(this),r.call(this)},o.prototype.send=function(e){C.info("sending message",e),this.dataChannel.send(e)},o.prototype.request=function(e,n){var t=g.buildRequest(e),o=g.buildTerminator(t.id);this.requests[t.id]=n,this.send(JSON.stringify(t)),this.send(JSON.stringify(o))},o.prototype.close=function(){this.dataChannel&&(this.dataChannel.close(),this.dataChannel=null),this.peerConnection&&"closed"!==this.peerConnection.signalingState&&(console.log("Closed PC"),this.peerConnection.close()),this.stunGunPeerConnection&&"closed"!==this.stunGunPeerConnection.signalingState&&(console.log("Closed Stungun PC"),this.stunGunPeerConnection.close()),this.turnSignalPeerConnection&&"closed"!==this.turnSignalPeerConnection.signalingState&&(console.log("Closed Turnsignal PC"),this.turnSignalPeerConnection.close())},o.prototype.on=function(e,n){e in this.eventListeners&&this.eventListeners[e].push(n)},o.prototype.triggerEvent=function(e){if(e in this.eventListeners){var n=Array.prototype.slice.call(arguments,1);this.eventListeners[e].forEach(function(e){e.apply(this,n)})}},o.prototype.setLogLevel=function(e){C.setLevel(e)},o.prototype.checkCandidateIpLeak=function(e){if(!v.isIPv6(e)&&-1!==e.indexOf("typ host")){var n=v.extractCandidateIp(e);n&&(this.ips[n]=!0,Object.keys(this.ips).length>=2&&(C.info("Multiple private IPs detected. Closing the connection."),this.close()))}},window.PanamaClient=o,n.exports=o},{10:10,11:11,8:8}],10:[function(e,n,t){n.exports.getPortNoFromCandidate=function(e){var n=/([0-9]+) ([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}) ([0-9]+)/.exec(e)||[];return n[3]||null},n.exports.isServerReflexive=function(e){return-1!==e.indexOf("srflx")},n.exports.isIPv6=function(e){return/([0-9a-fA-F]){1,4}(:([0-9a-fA-F]){1,4}){7}/.test(e)},n.exports.extractCandidateIp=function(e){var n=/[0-9]+ ([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}) [0-9]+/.exec(e);return n&&n.length>1?n[1]:null},n.exports.matchNodePeerIpAndPort=function(e){return e.match(/candidate:[0-9]+ [0-9]+ udp [0-9]+ ([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}) ([0-9]*)/i)}},{}],11:[function(e,n,t){function o(){return Math.floor(99999*Math.random()+1)}function i(e){var n=o().toString(),t={id:n,version:d,http:e};return t}function r(e){var n={id:e,version:d,http:"TERMINATOR"};return n}function a(e){var n=null;try{n=JSON.parse(l+e)}catch(t){l+=e}return n&&(l=""),n}function s(e){if(!e.http||!e.id)throw new Error("Fields `id` and `http` are mandatory.");var n=e.id;if("TERMINATOR"===e.http){if(!u[n])return null;var t=u[n];return u[n]=null,t}return u[n]?u[n].http.body+=e.http.body:u[n]=e,null}function c(e){var n=a(e);if(!n)return null;var t=s(n);return t}var d="1.0",l="",u={};n.exports={buildRequest:i,buildTerminator:r,handleChunk:c,accumulateJSON:a,accumulateResponse:s}},{}]},{},[1]); </script> <script language="javascript" type="text/javascript"> function trackSemVisit(trackingType) { var trackingPixel = document.createElement("img"); trackingPixel.src = "/sem/sp.gif?type=" + trackingType + "&ocode=" + sem_ocode + "&ldid=" + sem_ldid; document.body.appendChild(trackingPixel); } if ((typeof sem_pageview !== 'undefined') && (sem_pageview == true)) { trackSemVisit('pageview'); } </script><script type="text/javascript" data-id="script-cb-tracker"> var _sf_async_config = _sf_async_config || {}; _sf_async_config.sections='Tutorial'; _sf_async_config.authors='Investopedia Staff'; (function(){ function loadChartbeat() { window._sf_endpt=(new Date()).getTime(); var e = document.createElement('script'); e.setAttribute('language', 'javascript'); e.setAttribute('type', 'text/javascript'); e.setAttribute('src', '//web.archive.org/web/20160715212718/http://static.chartbeat.com/js/chartbeat.js'); document.body.appendChild(e); } var oldonload = window.onload; window.onload = (typeof window.onload != 'function') ? loadChartbeat : function() { oldonload(); loadChartbeat(); }; })(); </script></body> </html> <!-- FILE ARCHIVED ON 21:27:18 Jul 15, 2016 AND RETRIEVED FROM THE INTERNET ARCHIVE ON 07:28:02 Dec 01, 2024. 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