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} .loading { visibility: hidden; } .detail-page .post-footer .cmt_iframe_holder { padding-top: 40px !important; } /** Desktop **/ @media (max-width: 900px) { .col-right { display: none; } .col-main { margin-right: 0; min-width: initial; } .footer-outer { display: none; } .cols-wrapper { min-width: initial; } .google-footer-outer { background-color: #f5f5f5; } } /** Tablet **/ @media (max-width: 712px) { .header-outer, .cols-wrapper, .footer-outer, .google-footer-outer { padding: 0 40px; } } /* An extra breakpoint accommodating for long blog titles. */ @media (max-width: 600px) { .header-left { height: 100%; position: initial; top: inherit; margin-top: 0; -webkit-transform: initial; transform: initial; } .header-title { margin-top: 18px; } .header-inner { height: auto; margin-bottom: 32px; margin-top: 32px; } .header-desc { margin-top: 12px; } .header-inner .google-logo { height: 70px; margin-top: 3px; } .header-inner .google-logo img { height: 70px; } .header-title h2 { font-size: 32px; 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max-width: inherit; width: calc(100% + 32px); } .post-content table, .post-content td { width: 100%; } #blog-pager { margin: 0; padding: 16px 0; } /** List page tweaks. **/ .list-page .post-original { display: none; } .list-page .post-summary { display: block; } .list-page .comment-container { display: none; } .list-page #blog-pager { padding-top: 0; border: 0; margin-top: -8px; } .list-page .label-footer { display: none; } .list-page #main .post .post-footer { border-bottom: 1px solid #eee; margin: -16px 0 0 0; padding: 0 0 20px 0; } .list-page .post .share { display: none; } /** Detail page tweaks. **/ .detail-page .post-footer .cmt_iframe_holder { padding-top: 32px !important; } .detail-page .label-footer { margin-bottom: 0; } .detail-page #main .post .post-footer { padding-bottom: 0; } .detail-page #comments { display: none; } } [data-about-pullquote], [data-is-preview], [data-about-syndication] { display: none; } </style> <noscript> <style> .loading { visibility: visible }</style> </noscript> <script type='text/javascript'> (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) })(window,document,'script','https://www.google-analytics.com/analytics.js','ga'); 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//]]> </script> <noscript> <img alt='' height='1' src='https://ad.doubleclick.net/ddm/activity/src=2542116;type=gblog;cat=googl0;ord=1?' width='1'/> </noscript>  <div class='header-outer'> <div class='header-inner'> <div class='section' id='header'><div class='widget Header' data-version='1' id='Header1'> <div class='header-left'> <div class='header-title'> <a class='google-logo' href='https://blog.chromium.org/'> <img alt="Chromium Blog" height="50" src="//1.bp.blogspot.com/-vkF7AFJOwBk/VkQxeAGi1mI/AAAAAAAARYo/57denvsQ8zA/s1600-r/logo_chromium.png"> </a> <a href='/.'> <h2> Chromium Blog </h2> </a> </div> <div class='header-desc'> News and developments from the open source browser project </div> </div> </div></div> </div> </div>  <div class='cols-wrapper loading'> <div class='col-main-wrapper'> <div class='col-main'> <div class='section' id='main'><div class='widget Blog' data-version='1' id='Blog1'> <div class='post' data-id='6618675355241045023' itemscope='' itemtype='http://schema.org/BlogPosting'> <h2 class='title' itemprop='name'> <a href='https://blog.chromium.org/2012/11/build-chrome-packaged-apps-with.html' itemprop='url' title='Build Chrome Packaged Apps with the MediaGalleries API'> Build Chrome Packaged Apps with the MediaGalleries API </a> </h2> <div class='post-header'> <div class='published'> <span class='publishdate' itemprop='datePublished'> Tuesday, November 20, 2012 </span> </div> </div> <div class='post-body'> <div class='post-content' itemprop='articleBody'> <script type='text/template'> Many popular applications today help users consume, share, manage, and edit media content, as evidenced by the rise of web apps like <a href="https://play.google.com/music/">Google Play Music</a> and <a href="//www.youtube.com/">YouTube</a>. For <a href="http://developer.chrome.com/apps/about_apps.html">Chrome packaged app developers</a>, the new <a href="http://developer.chrome.com/apps/mediaGalleries.html">Media Galleries API</a> introduces a simple way for apps to access media stored on a user’s device (with the user’s permission, of course).<br /> <br /> To use the API, you first have to determine what kind of permission your app needs to access user’s media:<br /> <ul> <li><b>read-only</b>: allows media content to be read, but not modified </li> <li><b>read-write</b>: allows media content to be read and modified </li> <li><b>add-files</b>: allows media to be added to the galleries but prevents modifying existing media files.  </li> </ul> Currently, only read-only access is supported. Support for read-write and add-files will be introduced in a future release.<br /> <br /> To retrieve media content, use <a href="http://developer.chrome.com/apps/mediaGalleries.html#method-getMediaFileSystems">getMediaFilesystems()</a>. If this is the first time your app is accessing the user’s media libraries, the system will prompt the user to grant access:<br /> <br /> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjEcYobxmpvRvQReMy83fXvpmxPmh8aD28WVEhpcoixQ0sktop4fqIKXkCPlR3mJUscuZcYWBvmpgmHgZkitq4XsPOfaFTvsN3sBe-bBtDeoF71KBNAQAQqEYT9_3blyV4Mg3VqSttqhHc/s1600/Screen+Shot+2012-11-20+at+9.58.51+AM.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="144" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjEcYobxmpvRvQReMy83fXvpmxPmh8aD28WVEhpcoixQ0sktop4fqIKXkCPlR3mJUscuZcYWBvmpgmHgZkitq4XsPOfaFTvsN3sBe-bBtDeoF71KBNAQAQqEYT9_3blyV4Mg3VqSttqhHc/s320/Screen+Shot+2012-11-20+at+9.58.51+AM.png" width="320" /></a> <br /> <br /> You can also make your app explicitly ask the user to designate specific galleries. This is useful if, for example, your app is only interested in pictures. Once access is granted, your app can then retrieve a list of <a href="http://www.html5rocks.com/en/tutorials/file/filesystem/">LocalFileSystem</a> structures. At that point, you can use the <a href="http://www.w3.org/TR/file-system-api/">W3C FileSystem API</a> to access the media gallery content.<br /> <br /> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjti0RhWWU1Hc_3GzvGCYGKzNPispqESlXTabX-NcHyRSjeM69AxPiD2fIQpEacWw3OVz-1KNQ2sSZCeqbUUVWcNvqLkTw4J7Ul-8TMhYkef4e7JzbWlDTPxG-uv_SdDL1VQvUPPyaxUgQ/s1600/Screen+Shot+2012-11-20+at+9.59.04+AM.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjti0RhWWU1Hc_3GzvGCYGKzNPispqESlXTabX-NcHyRSjeM69AxPiD2fIQpEacWw3OVz-1KNQ2sSZCeqbUUVWcNvqLkTw4J7Ul-8TMhYkef4e7JzbWlDTPxG-uv_SdDL1VQvUPPyaxUgQ/s320/Screen+Shot+2012-11-20+at+9.59.04+AM.png" width="320" /></a> <br /> <b><br /></b> <b>NOTE</b>: The file system APIs will only return files that the Chrome platform <a href="http://www.chromium.org/developers/web-platform-status#TOC-Multimedia">natively supports</a>, and only the <a href="http://www.w3.org/TR/file-system-api/#the-asynchronous-filesystem-interface">asynchronous version</a> of the FileSystem API is currently supported.<br /> <br /> We’re eager to see what great applications you will build with the Media Galleries API and the Chrome Packaged Apps platform. To get started, clone our <a href="http://github.com/GoogleChrome/chrome-app-samples">samples repository</a> and look at the Media Galleries <a href="https://github.com/GoogleChrome/chrome-app-samples/tree/master/media-gallery">sample application</a>. Have questions or comments? Subscribe to <a href="https://groups.google.com/a/chromium.org/group/chromium-apps">chromium-apps</a> and follow us on our <a href="https://plus.google.com/+GoogleChromeDevelopers/">Google+ page</a>!<br /> <span class="post-author"><br /></span> <span class="post-author">Posted by Joe Marini, Developer Advocate</span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </script> <noscript> Many popular applications today help users consume, share, manage, and edit media content, as evidenced by the rise of web apps like <a href="https://play.google.com/music/">Google Play Music</a> and <a href="//www.youtube.com/">YouTube</a>. For <a href="http://developer.chrome.com/apps/about_apps.html">Chrome packaged app developers</a>, the new <a href="http://developer.chrome.com/apps/mediaGalleries.html">Media Galleries API</a> introduces a simple way for apps to access media stored on a user’s device (with the user’s permission, of course).<br /> <br /> To use the API, you first have to determine what kind of permission your app needs to access user’s media:<br /> <ul> <li><b>read-only</b>: allows media content to be read, but not modified </li> <li><b>read-write</b>: allows media content to be read and modified </li> <li><b>add-files</b>: allows media to be added to the galleries but prevents modifying existing media files.  </li> </ul> Currently, only read-only access is supported. Support for read-write and add-files will be introduced in a future release.<br /> <br /> To retrieve media content, use <a href="http://developer.chrome.com/apps/mediaGalleries.html#method-getMediaFileSystems">getMediaFilesystems()</a>. If this is the first time your app is accessing the user’s media libraries, the system will prompt the user to grant access:<br /> <br /> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjEcYobxmpvRvQReMy83fXvpmxPmh8aD28WVEhpcoixQ0sktop4fqIKXkCPlR3mJUscuZcYWBvmpgmHgZkitq4XsPOfaFTvsN3sBe-bBtDeoF71KBNAQAQqEYT9_3blyV4Mg3VqSttqhHc/s1600/Screen+Shot+2012-11-20+at+9.58.51+AM.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="144" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjEcYobxmpvRvQReMy83fXvpmxPmh8aD28WVEhpcoixQ0sktop4fqIKXkCPlR3mJUscuZcYWBvmpgmHgZkitq4XsPOfaFTvsN3sBe-bBtDeoF71KBNAQAQqEYT9_3blyV4Mg3VqSttqhHc/s320/Screen+Shot+2012-11-20+at+9.58.51+AM.png" width="320" /></a> <br /> <br /> You can also make your app explicitly ask the user to designate specific galleries. This is useful if, for example, your app is only interested in pictures. Once access is granted, your app can then retrieve a list of <a href="http://www.html5rocks.com/en/tutorials/file/filesystem/">LocalFileSystem</a> structures. At that point, you can use the <a href="http://www.w3.org/TR/file-system-api/">W3C FileSystem API</a> to access the media gallery content.<br /> <br /> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjti0RhWWU1Hc_3GzvGCYGKzNPispqESlXTabX-NcHyRSjeM69AxPiD2fIQpEacWw3OVz-1KNQ2sSZCeqbUUVWcNvqLkTw4J7Ul-8TMhYkef4e7JzbWlDTPxG-uv_SdDL1VQvUPPyaxUgQ/s1600/Screen+Shot+2012-11-20+at+9.59.04+AM.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjti0RhWWU1Hc_3GzvGCYGKzNPispqESlXTabX-NcHyRSjeM69AxPiD2fIQpEacWw3OVz-1KNQ2sSZCeqbUUVWcNvqLkTw4J7Ul-8TMhYkef4e7JzbWlDTPxG-uv_SdDL1VQvUPPyaxUgQ/s320/Screen+Shot+2012-11-20+at+9.59.04+AM.png" width="320" /></a> <br /> <b><br /></b> <b>NOTE</b>: The file system APIs will only return files that the Chrome platform <a href="http://www.chromium.org/developers/web-platform-status#TOC-Multimedia">natively supports</a>, and only the <a href="http://www.w3.org/TR/file-system-api/#the-asynchronous-filesystem-interface">asynchronous version</a> of the FileSystem API is currently supported.<br /> <br /> We’re eager to see what great applications you will build with the Media Galleries API and the Chrome Packaged Apps platform. To get started, clone our <a href="http://github.com/GoogleChrome/chrome-app-samples">samples repository</a> and look at the Media Galleries <a href="https://github.com/GoogleChrome/chrome-app-samples/tree/master/media-gallery">sample application</a>. Have questions or comments? Subscribe to <a href="https://groups.google.com/a/chromium.org/group/chromium-apps">chromium-apps</a> and follow us on our <a href="https://plus.google.com/+GoogleChromeDevelopers/">Google+ page</a>!<br /> <span class="post-author"><br /></span> <span class="post-author">Posted by Joe Marini, Developer Advocate</span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </noscript> </div> </div> <div class='share'> <span class='twitter-custom social-wrapper' data-href='http://twitter.com/share?text=Chromium Blog:Build Chrome Packaged Apps with the MediaGalleries API&url=https://blog.chromium.org/2012/11/build-chrome-packaged-apps-with.html&via=ChromiumDev'> <img alt='Share on Twitter' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_twitter_black_24dp.png' width='24'/> </span> <span class='fb-custom social-wrapper' data-href='https://www.facebook.com/sharer.php?u=https://blog.chromium.org/2012/11/build-chrome-packaged-apps-with.html'> <img alt='Share on Facebook' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_facebook_black_24dp.png' width='24'/> </span> </div> <div class='post-footer'> <div class='cmt_iframe_holder' data-href='https://blog.chromium.org/2012/11/build-chrome-packaged-apps-with.html' data-viewtype='FILTERED_POSTMOD'></div> <a href='https://plus.google.com/112374322230920073195' rel='author' style='display:none;'> Google </a> <div class='label-footer'> <span class='labels-caption'> Labels: </span> <span class='labels'> <a class='label' href='https://blog.chromium.org/search/label/chrome%20apps' rel='tag'> chrome apps </a> , <a class='label' href='https://blog.chromium.org/search/label/chrome%20web%20store' rel='tag'> chrome web store </a> </span> </div> </div> </div> <div class='post' data-id='5883147465250632474' itemscope='' itemtype='http://schema.org/BlogPosting'> <h2 class='title' itemprop='name'> <a href='https://blog.chromium.org/2012/11/a-safer-playground-for-your-linux-and.html' itemprop='url' title='A safer playground for your Linux and Chrome OS renderers'> A safer playground for your Linux and Chrome OS renderers </a> </h2> <div class='post-header'> <div class='published'> <span class='publishdate' itemprop='datePublished'> Monday, November 19, 2012 </span> </div> </div> <div class='post-body'> <div class='post-content' itemprop='articleBody'> <script type='text/template'> <a href="http://dev.chromium.org/developers/design-documents/sandbox">Sandboxing</a> is a layer of security that Chrome places between attackers and their computer, aiming to isolate an attacker who has successfully exploited a vulnerability. When contained in a sandbox jail, an attacker will typically look for porous or fragile bits in the walls to throw rocks at. That is, he’ll try to gain additional privileges by taking advantage of other vulnerabilities. Our job is to make the virtual walls of the sandbox as strong and impenetrable as possible.<br /> <br /> One juicy target for attackers is the operating system’s kernel: a large and complex code base. The latest stable version of Chrome introduces a new layer of sandboxing of Chrome renderers for the 64-bit versions of Chrome OS and Linux, based on a new kernel feature called <a href="http://lwn.net/Articles/475043/">seccomp-bpf</a>. With seccomp-bpf we’ll install a small filter in the kernel that will quickly reject many of the rocks thrown by an attacker. A simple example: if we know that Chrome renderers don’t need a system call such as <a href="http://lwn.net/Articles/268783/">vmsplice</a>, or a facility such as “inotify”, we can just deny them completely. We use a <a href="http://dev.chromium.org/developers/design-documents/sandbox">broker process model</a> to keep the list of allowed system calls small.<br /> <br /> Installing this filter in the kernel improves the security of our users. But it is just the beginning: using this new facility, we’ll continue to make the sandbox safer.<br /> <br /> This new sandbox layer is automatically baked into the latest version of Chrome OS. On Linux, you can check by going to <span style="font-family: Courier New, Courier, monospace;">chrome://sandbox</span> and look for “Seccomp-BPF sandbox Yes”. If this is not available, ask your Linux distribution to include and enable seccomp-bpf in its kernel, as <a href="http://www.ubuntu.com/">Ubuntu</a> has done since version 12.04.<br /> <br /> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjHrB9f16SgCWeu4bQp-WyQNzuc-S0NUNSXe9FbiZyqkJUSBLdTYNNB5jOMZZ8z1Fwm0cL61ymmPKmKM2qUe7UWU1k9RavKhjI_8Opmk246SWGLHOIyU_yJVvFJxBsi1xXeI3ysYeB70eE/s1600/Screen+Shot+2012-11-19+at+2.34.45+PM.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="273" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjHrB9f16SgCWeu4bQp-WyQNzuc-S0NUNSXe9FbiZyqkJUSBLdTYNNB5jOMZZ8z1Fwm0cL61ymmPKmKM2qUe7UWU1k9RavKhjI_8Opmk246SWGLHOIyU_yJVvFJxBsi1xXeI3ysYeB70eE/s320/Screen+Shot+2012-11-19+at+2.34.45+PM.png" width="320" /></a> <br /> As always, you can report bugs and issues <a href="https://code.google.com/p/chromium/issues/list">here</a>, by clicking on “New issue”.<br /> <br /> <span class="post-author">Posted by Julien Tinnes, Software Engineer</span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </script> <noscript> <a href="http://dev.chromium.org/developers/design-documents/sandbox">Sandboxing</a> is a layer of security that Chrome places between attackers and their computer, aiming to isolate an attacker who has successfully exploited a vulnerability. When contained in a sandbox jail, an attacker will typically look for porous or fragile bits in the walls to throw rocks at. That is, he’ll try to gain additional privileges by taking advantage of other vulnerabilities. Our job is to make the virtual walls of the sandbox as strong and impenetrable as possible.<br /> <br /> One juicy target for attackers is the operating system’s kernel: a large and complex code base. The latest stable version of Chrome introduces a new layer of sandboxing of Chrome renderers for the 64-bit versions of Chrome OS and Linux, based on a new kernel feature called <a href="http://lwn.net/Articles/475043/">seccomp-bpf</a>. With seccomp-bpf we’ll install a small filter in the kernel that will quickly reject many of the rocks thrown by an attacker. A simple example: if we know that Chrome renderers don’t need a system call such as <a href="http://lwn.net/Articles/268783/">vmsplice</a>, or a facility such as “inotify”, we can just deny them completely. We use a <a href="http://dev.chromium.org/developers/design-documents/sandbox">broker process model</a> to keep the list of allowed system calls small.<br /> <br /> Installing this filter in the kernel improves the security of our users. But it is just the beginning: using this new facility, we’ll continue to make the sandbox safer.<br /> <br /> This new sandbox layer is automatically baked into the latest version of Chrome OS. On Linux, you can check by going to <span style="font-family: Courier New, Courier, monospace;">chrome://sandbox</span> and look for “Seccomp-BPF sandbox Yes”. If this is not available, ask your Linux distribution to include and enable seccomp-bpf in its kernel, as <a href="http://www.ubuntu.com/">Ubuntu</a> has done since version 12.04.<br /> <br /> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjHrB9f16SgCWeu4bQp-WyQNzuc-S0NUNSXe9FbiZyqkJUSBLdTYNNB5jOMZZ8z1Fwm0cL61ymmPKmKM2qUe7UWU1k9RavKhjI_8Opmk246SWGLHOIyU_yJVvFJxBsi1xXeI3ysYeB70eE/s1600/Screen+Shot+2012-11-19+at+2.34.45+PM.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="273" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjHrB9f16SgCWeu4bQp-WyQNzuc-S0NUNSXe9FbiZyqkJUSBLdTYNNB5jOMZZ8z1Fwm0cL61ymmPKmKM2qUe7UWU1k9RavKhjI_8Opmk246SWGLHOIyU_yJVvFJxBsi1xXeI3ysYeB70eE/s320/Screen+Shot+2012-11-19+at+2.34.45+PM.png" width="320" /></a> <br /> As always, you can report bugs and issues <a href="https://code.google.com/p/chromium/issues/list">here</a>, by clicking on “New issue”.<br /> <br /> <span class="post-author">Posted by Julien Tinnes, Software Engineer</span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </noscript> </div> </div> <div class='share'> <span class='twitter-custom social-wrapper' data-href='http://twitter.com/share?text=Chromium Blog:A safer playground for your Linux and Chrome OS renderers&url=https://blog.chromium.org/2012/11/a-safer-playground-for-your-linux-and.html&via=ChromiumDev'> <img alt='Share on Twitter' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_twitter_black_24dp.png' width='24'/> </span> <span class='fb-custom social-wrapper' data-href='https://www.facebook.com/sharer.php?u=https://blog.chromium.org/2012/11/a-safer-playground-for-your-linux-and.html'> <img alt='Share on Facebook' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_facebook_black_24dp.png' width='24'/> </span> </div> <div class='post-footer'> <div class='cmt_iframe_holder' data-href='https://blog.chromium.org/2012/11/a-safer-playground-for-your-linux-and.html' data-viewtype='FILTERED_POSTMOD'></div> <a href='https://plus.google.com/112374322230920073195' rel='author' style='display:none;'> Google </a> <div class='label-footer'> <span class='labels-caption'> Labels: </span> <span class='labels'> <a class='label' href='https://blog.chromium.org/search/label/chromeos' rel='tag'> chromeos </a> , <a class='label' href='https://blog.chromium.org/search/label/linux' rel='tag'> linux </a> , <a class='label' href='https://blog.chromium.org/search/label/security' rel='tag'> security </a> </span> </div> </div> </div> <div class='post' data-id='1981163676689602999' itemscope='' itemtype='http://schema.org/BlogPosting'> <h2 class='title' itemprop='name'> <a href='https://blog.chromium.org/2012/11/build-smoother-web-apps-with-chrome.html' itemprop='url' title='Build smoother web apps with Chrome Developer Tools'> Build smoother web apps with Chrome Developer Tools </a> </h2> <div class='post-header'> <div class='published'> <span class='publishdate' itemprop='datePublished'> Friday, November 16, 2012 </span> </div> </div> <div class='post-body'> <div class='post-content' itemprop='articleBody'> <script type='text/template'> Whether your web app involves scrolling down a long list of news headlines or a game with <a href="https://chrome.google.com/webstore/detail/angry-birds/aknpkdffaafgjchaibgeefbgmgeghloj">flying birds</a> and crumbling structures, you want your web app to look as smooth as native apps. It used to be tricky to chase down the cause of animation jitter and lag in user actions with <a href="https://developers.google.com/chrome-developer-tools/">Chrome Developer Tools</a>. This is why <a href="http://blog.chromium.org/2012/10/do-more-with-chrome-developer-tools.html">we’ve added</a> <b>the Frame Mode to our Timeline panel</b> to help you pinpoint offending long frames and understand what’s causing them to run slowly.<br /> <br /> <a href="//youtu.be/hAzhayTnhEI?t=1m27s">So, what’s a frame</a>? A frame includes all the tasks that the browser needs to perform in order to update the screen upon a user action or a tick of the animation timer. A complex, but not uncommon, sequence might be:<br /> <ol> <li>run JavaScript animations and other event handlers </li> <li>update CSS animations </li> <li>recalculate styles and lay out the elements in the DOM </li> <li>re-paint the updated layers of the page </li> <li>compose them and present to the user </li> </ol> Delivering a butter-smooth animation means completing all of the above in <b>less than 16.6ms</b> (common 60Hz refresh rate). <b>If you are not done by then, you’ll miss the frame</b> and the animation will appear janky.<br /> <br /> To see how using Timeline can help you, run your favorite browser-based game, then open Developer Tools and record the Timeline while the game is running some animation. The Timeline Frame mode will now show you colored bars, each representing a frame. The colors correspond to different types of timeline events:<br /> <ul> <li>network activity and HTML parsing (blue) </li> <li>running JavaScript (yellow) </li> <li>performing style recalculation and layout (violet) </li> <li>painting and compositing (green) </li> </ul> You can zoom in by selecting several frames or by clicking on a particular frame of interest. Looking at a specific frame in detailed view will show you the frame duration, and you can find more detailed statistics by hovering on it.<br /> <br /> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEitjMKrk8Oe1wjLLDsMsBKs0FratAkyu7pxZX8BO3PP6Ew23gKxtFVVQNxJsJwQQJFuRZEnZR9kcTzGF6cIYtS5f8pAAqaSkNHZ1bRSRC5EWfJiXUWdYfNmSCmsw03H2EFYHirEwh80XrY/s1600/Screen+Shot+2012-11-16+at+12.56.31+PM.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="157" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEitjMKrk8Oe1wjLLDsMsBKs0FratAkyu7pxZX8BO3PP6Ew23gKxtFVVQNxJsJwQQJFuRZEnZR9kcTzGF6cIYtS5f8pAAqaSkNHZ1bRSRC5EWfJiXUWdYfNmSCmsw03H2EFYHirEwh80XrY/s400/Screen+Shot+2012-11-16+at+12.56.31+PM.png" width="400" /></a> <br /> <br /> Even if your web app doesn’t have animation in it, the notion of a frame is still useful because the browser performs a repeated sequence of actions while processing input events such as keypress, mouse actions, scrolling etc. Leaving enough time to process such events inside a frame makes your app more <b>responsive and interactiv</b>e, resulting in a better overall experience for users.<br /> <br /> In large web applications with huge DOM trees, layout typically takes time and resources. Doing it in a loop makes things much worse. So we’ve <b>added a warning mark on layouts that were forced, by requesting positional properties</b> (e.g. offsetWidth and offsetHeight) of DOM elements from JavaScript. If you hover over the layout event, you can see two stacks -- one that invalidated the DOM and another that caused layout synchronously. You can also see the area that had to be re-laid highlighted on the screen.<br /> <br /> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj3Elrn-rYJzVzyoXNd1ErVU0xDXRsyH_gohfwlcNcvN2hTtit1-uT4OLSmVST4XEQXeuofKK-lIWAUCvg50cCsnGIHsX3SrG8DJ1ARgmVBnSCsQE5w5LpjojXuJGtgxLiimAc8QI0UTAg/s1600/Screen+Shot+2012-11-16+at+12.59.10+PM.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="171" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj3Elrn-rYJzVzyoXNd1ErVU0xDXRsyH_gohfwlcNcvN2hTtit1-uT4OLSmVST4XEQXeuofKK-lIWAUCvg50cCsnGIHsX3SrG8DJ1ARgmVBnSCsQE5w5LpjojXuJGtgxLiimAc8QI0UTAg/s320/Screen+Shot+2012-11-16+at+12.59.10+PM.png" width="320" /></a> <br /> <br /> Finally, don’t forget that the <a href="//youtu.be/hAzhayTnhEI?t=6m26s">best practice</a> for dealing with animations is to use the <a href="http://paulirish.com/2011/requestanimationframe-for-smart-animating/">requestAnimationFrame</a> API, which guarantees that Chromium will call back your animation code in sync with the display refresh.<br /> <br /> You can learn more about optimizing rendering performance of a page in <a href="http://www.html5rocks.com/en/tutorials/speed/rendering/">Tom Wiltzius’ article</a> on html5rocks.com. Follow <a href="https://plus.google.com/+GoogleChromeDevelopers/">Google Chrome Developers</a> on Google+ or <a href="http://twitter.com/ChromiumDev">@ChromiumDev</a> on Twitter for more news on Chrome Developer Tools.<br /> <span class="post-author"><br /></span> <span class="post-author">Posted by Andrey Kosyakov, Software Engineer</span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </script> <noscript> Whether your web app involves scrolling down a long list of news headlines or a game with <a href="https://chrome.google.com/webstore/detail/angry-birds/aknpkdffaafgjchaibgeefbgmgeghloj">flying birds</a> and crumbling structures, you want your web app to look as smooth as native apps. It used to be tricky to chase down the cause of animation jitter and lag in user actions with <a href="https://developers.google.com/chrome-developer-tools/">Chrome Developer Tools</a>. This is why <a href="http://blog.chromium.org/2012/10/do-more-with-chrome-developer-tools.html">we’ve added</a> <b>the Frame Mode to our Timeline panel</b> to help you pinpoint offending long frames and understand what’s causing them to run slowly.<br /> <br /> <a href="//youtu.be/hAzhayTnhEI?t=1m27s">So, what’s a frame</a>? A frame includes all the tasks that the browser needs to perform in order to update the screen upon a user action or a tick of the animation timer. A complex, but not uncommon, sequence might be:<br /> <ol> <li>run JavaScript animations and other event handlers </li> <li>update CSS animations </li> <li>recalculate styles and lay out the elements in the DOM </li> <li>re-paint the updated layers of the page </li> <li>compose them and present to the user </li> </ol> Delivering a butter-smooth animation means completing all of the above in <b>less than 16.6ms</b> (common 60Hz refresh rate). <b>If you are not done by then, you’ll miss the frame</b> and the animation will appear janky.<br /> <br /> To see how using Timeline can help you, run your favorite browser-based game, then open Developer Tools and record the Timeline while the game is running some animation. The Timeline Frame mode will now show you colored bars, each representing a frame. The colors correspond to different types of timeline events:<br /> <ul> <li>network activity and HTML parsing (blue) </li> <li>running JavaScript (yellow) </li> <li>performing style recalculation and layout (violet) </li> <li>painting and compositing (green) </li> </ul> You can zoom in by selecting several frames or by clicking on a particular frame of interest. Looking at a specific frame in detailed view will show you the frame duration, and you can find more detailed statistics by hovering on it.<br /> <br /> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEitjMKrk8Oe1wjLLDsMsBKs0FratAkyu7pxZX8BO3PP6Ew23gKxtFVVQNxJsJwQQJFuRZEnZR9kcTzGF6cIYtS5f8pAAqaSkNHZ1bRSRC5EWfJiXUWdYfNmSCmsw03H2EFYHirEwh80XrY/s1600/Screen+Shot+2012-11-16+at+12.56.31+PM.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="157" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEitjMKrk8Oe1wjLLDsMsBKs0FratAkyu7pxZX8BO3PP6Ew23gKxtFVVQNxJsJwQQJFuRZEnZR9kcTzGF6cIYtS5f8pAAqaSkNHZ1bRSRC5EWfJiXUWdYfNmSCmsw03H2EFYHirEwh80XrY/s400/Screen+Shot+2012-11-16+at+12.56.31+PM.png" width="400" /></a> <br /> <br /> Even if your web app doesn’t have animation in it, the notion of a frame is still useful because the browser performs a repeated sequence of actions while processing input events such as keypress, mouse actions, scrolling etc. Leaving enough time to process such events inside a frame makes your app more <b>responsive and interactiv</b>e, resulting in a better overall experience for users.<br /> <br /> In large web applications with huge DOM trees, layout typically takes time and resources. Doing it in a loop makes things much worse. So we’ve <b>added a warning mark on layouts that were forced, by requesting positional properties</b> (e.g. offsetWidth and offsetHeight) of DOM elements from JavaScript. If you hover over the layout event, you can see two stacks -- one that invalidated the DOM and another that caused layout synchronously. You can also see the area that had to be re-laid highlighted on the screen.<br /> <br /> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj3Elrn-rYJzVzyoXNd1ErVU0xDXRsyH_gohfwlcNcvN2hTtit1-uT4OLSmVST4XEQXeuofKK-lIWAUCvg50cCsnGIHsX3SrG8DJ1ARgmVBnSCsQE5w5LpjojXuJGtgxLiimAc8QI0UTAg/s1600/Screen+Shot+2012-11-16+at+12.59.10+PM.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="171" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj3Elrn-rYJzVzyoXNd1ErVU0xDXRsyH_gohfwlcNcvN2hTtit1-uT4OLSmVST4XEQXeuofKK-lIWAUCvg50cCsnGIHsX3SrG8DJ1ARgmVBnSCsQE5w5LpjojXuJGtgxLiimAc8QI0UTAg/s320/Screen+Shot+2012-11-16+at+12.59.10+PM.png" width="320" /></a> <br /> <br /> Finally, don’t forget that the <a href="//youtu.be/hAzhayTnhEI?t=6m26s">best practice</a> for dealing with animations is to use the <a href="http://paulirish.com/2011/requestanimationframe-for-smart-animating/">requestAnimationFrame</a> API, which guarantees that Chromium will call back your animation code in sync with the display refresh.<br /> <br /> You can learn more about optimizing rendering performance of a page in <a href="http://www.html5rocks.com/en/tutorials/speed/rendering/">Tom Wiltzius’ article</a> on html5rocks.com. Follow <a href="https://plus.google.com/+GoogleChromeDevelopers/">Google Chrome Developers</a> on Google+ or <a href="http://twitter.com/ChromiumDev">@ChromiumDev</a> on Twitter for more news on Chrome Developer Tools.<br /> <span class="post-author"><br /></span> <span class="post-author">Posted by Andrey Kosyakov, Software Engineer</span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </noscript> </div> </div> <div class='share'> <span class='twitter-custom social-wrapper' data-href='http://twitter.com/share?text=Chromium Blog:Build smoother web apps with Chrome Developer Tools&url=https://blog.chromium.org/2012/11/build-smoother-web-apps-with-chrome.html&via=ChromiumDev'> <img alt='Share on Twitter' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_twitter_black_24dp.png' width='24'/> </span> <span class='fb-custom social-wrapper' data-href='https://www.facebook.com/sharer.php?u=https://blog.chromium.org/2012/11/build-smoother-web-apps-with-chrome.html'> <img alt='Share on Facebook' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_facebook_black_24dp.png' width='24'/> </span> </div> <div class='post-footer'> <div class='cmt_iframe_holder' data-href='https://blog.chromium.org/2012/11/build-smoother-web-apps-with-chrome.html' data-viewtype='FILTERED_POSTMOD'></div> <a href='https://plus.google.com/112374322230920073195' rel='author' style='display:none;'> Google </a> <div class='label-footer'> <span class='labels-caption'> Labels: </span> <span class='labels'> <a class='label' href='https://blog.chromium.org/search/label/devtools' rel='tag'> devtools </a> </span> </div> </div> </div> <div class='post' data-id='2535430993957648993' itemscope='' itemtype='http://schema.org/BlogPosting'> <h2 class='title' itemprop='name'> <a href='https://blog.chromium.org/2012/11/restricting-extension-apis-in-legacy.html' itemprop='url' title='Restricting extension APIs in legacy packaged apps'> Restricting extension APIs in legacy packaged apps </a> </h2> <div class='post-header'> <div class='published'> <span class='publishdate' itemprop='datePublished'> Thursday, November 15, 2012 </span> </div> </div> <div class='post-body'> <div class='post-content' itemprop='articleBody'> <script type='text/template'> Even though Chrome extensions and <a href="http://developer.chrome.com/extensions/apps.html">legacy packaged apps</a> are similar at a technical level, users have very different expectations for how extensions and apps should look and behave. Users expect extensions to interact with the whole browser, whereas they expect apps to act solely in their containing tab or window.<br /> <br /> Until now, all Chrome legacy packaged apps could request the same permissions and use the same APIs as extensions to interact with Chrome. In order to make the capabilities of legacy packaged apps more closely align with user expectations, we’ve decided to limit the extensions permissions that legacy packaged apps can request.<br /> <br /> Beginning this week, you won’t be able to publish legacy packaged apps in the Chrome Web Store that request any of the following permissions:<br /> (a) any host permissions, including "<span style="font-family: Courier New, Courier, monospace;">< all urls ><all urls="urls"></all></span><all_urls>" </all_urls><br /> <all_urls>(b) the top-level "content_scripts" key </all_urls><br /> <all_urls>(c) the "debugger", "devtools", "pageCapture", "plugin", "proxy", "tabs'", "history", "webNavigation" permissions </all_urls><br /> <all_urls>(d) the top-level "npapi" key </all_urls><br /> <all_urls><br /></all_urls> <all_urls>Existing legacy packaged apps in the Chrome Web Store will not be affected, and those existing apps can continue to be updated without being subject to these new restrictions. </all_urls><br /> <br /> If you have questions, please get in touch with us on the <a href="http://developer.chrome.com/extensions/apps.html">Chromium extensions</a> or <a href="https://groups.google.com/a/chromium.org/forum/?fromgroups#!forum/chromium-apps">Chromium apps</a> groups.<br /> <span class="post-author"><br /></span> <span class="post-author">Posted by Peter Ludwig, Product Manager</span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </script> <noscript> Even though Chrome extensions and <a href="http://developer.chrome.com/extensions/apps.html">legacy packaged apps</a> are similar at a technical level, users have very different expectations for how extensions and apps should look and behave. Users expect extensions to interact with the whole browser, whereas they expect apps to act solely in their containing tab or window.<br /> <br /> Until now, all Chrome legacy packaged apps could request the same permissions and use the same APIs as extensions to interact with Chrome. In order to make the capabilities of legacy packaged apps more closely align with user expectations, we’ve decided to limit the extensions permissions that legacy packaged apps can request.<br /> <br /> Beginning this week, you won’t be able to publish legacy packaged apps in the Chrome Web Store that request any of the following permissions:<br /> (a) any host permissions, including "<span style="font-family: Courier New, Courier, monospace;">< all urls ><all urls="urls"></all></span><all_urls>" </all_urls><br /> <all_urls>(b) the top-level "content_scripts" key </all_urls><br /> <all_urls>(c) the "debugger", "devtools", "pageCapture", "plugin", "proxy", "tabs'", "history", "webNavigation" permissions </all_urls><br /> <all_urls>(d) the top-level "npapi" key </all_urls><br /> <all_urls><br /></all_urls> <all_urls>Existing legacy packaged apps in the Chrome Web Store will not be affected, and those existing apps can continue to be updated without being subject to these new restrictions. </all_urls><br /> <br /> If you have questions, please get in touch with us on the <a href="http://developer.chrome.com/extensions/apps.html">Chromium extensions</a> or <a href="https://groups.google.com/a/chromium.org/forum/?fromgroups#!forum/chromium-apps">Chromium apps</a> groups.<br /> <span class="post-author"><br /></span> <span class="post-author">Posted by Peter Ludwig, Product Manager</span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </noscript> </div> </div> <div class='share'> <span class='twitter-custom social-wrapper' data-href='http://twitter.com/share?text=Chromium Blog:Restricting extension APIs in legacy packaged apps&url=https://blog.chromium.org/2012/11/restricting-extension-apis-in-legacy.html&via=ChromiumDev'> <img alt='Share on Twitter' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_twitter_black_24dp.png' width='24'/> </span> <span class='fb-custom social-wrapper' data-href='https://www.facebook.com/sharer.php?u=https://blog.chromium.org/2012/11/restricting-extension-apis-in-legacy.html'> <img alt='Share on Facebook' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_facebook_black_24dp.png' width='24'/> </span> </div> <div class='post-footer'> <div class='cmt_iframe_holder' data-href='https://blog.chromium.org/2012/11/restricting-extension-apis-in-legacy.html' data-viewtype='FILTERED_POSTMOD'></div> <a href='https://plus.google.com/112374322230920073195' rel='author' style='display:none;'> Google </a> <div class='label-footer'> <span class='labels-caption'> Labels: </span> <span class='labels'> <a class='label' href='https://blog.chromium.org/search/label/chrome%20web%20store' rel='tag'> chrome web store </a> , <a class='label' href='https://blog.chromium.org/search/label/extensions' rel='tag'> extensions </a> </span> </div> </div> </div> <div class='post' data-id='4436824294095955342' itemscope='' itemtype='http://schema.org/BlogPosting'> <h2 class='title' itemprop='name'> <a href='https://blog.chromium.org/2012/11/backstage-at-jam-with-chrome.html' itemprop='url' title='Backstage at JAM with Chrome'> Backstage at JAM with Chrome </a> </h2> <div class='post-header'> <div class='published'> <span class='publishdate' itemprop='datePublished'> Thursday, November 8, 2012 </span> </div> </div> <div class='post-body'> <div class='post-content' itemprop='articleBody'> <script type='text/template'> Earlier today <a href="http://chrome.blogspot.com/2012/11/jam-with-chrome-play-music-live-with.html">we launched</a> JAM with Chrome. <a href="http://jamwithchrome.com/">JAM with Chrome</a> is an interactive web application that enables friends in different locations to play music together in the Chrome browser on their computers.<br /> <br /> <iframe allowfullscreen="allowfullscreen" frameborder="0" height="315" src="//www.youtube.com/embed/YkvKICWaRT4" width="560"></iframe> <br /> <br /> JAM with Chrome was built with the <a href="http://www.jamwithchrome.com/technology.html">latest browser technologies</a>:<br /> <ul> <li><a href="http://www.html5rocks.com/en/tutorials/webaudio/intro/">Web Audio</a> for high fidelity playback without resorting to lots of pre-recorded audio samples.  </li> <li><a href="http://www.html5rocks.com/en/tutorials/websockets/basics/">WebSockets</a> is used to deliver immediate real-time playback across all the members of the band ensuring they stay in sync and playing from the same tab sheet. </li> <li>Finally, <a href="http://html5search.com/search/css3">CSS3</a>, <a href="http://www.html5rocks.com/en/tutorials/svg/mobile_fundamentals/">SVG</a> and <a href="http://www.html5rocks.com/en/tutorials/canvas/integrating/">Canvas</a> provide rich visuals and an immersive experience.</li> </ul> To learn more about how we built this experience, check out “<a href="http://www.html5rocks.com/en/tutorials/casestudies/jamwithchrome-audio/">How we made the Audio rock</a>”. This is the first of three HTML5 Rocks articles that describes how the team used Web Audio to deliver an absorbing auditory experience. Stay tuned for more developer stories by following <a href="//google.com/+Google%20Chrome%20Developers">+Google Chrome Developers</a>.<br /> <br /> Enjoy playing music with friends at <a href="http://www.jamwithchrome.com/">www.jamwithchrome.com</a> and be sure to open Chrome’s <a href="https://developers.google.com/chrome-developer-tools/docs/overview">developer tools</a> to see what’s going on backstage!<br /> <span class="post-author"><br /></span> <span class="post-author">Posted by Paul Kinlan, Developer Advocate</span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </script> <noscript> Earlier today <a href="http://chrome.blogspot.com/2012/11/jam-with-chrome-play-music-live-with.html">we launched</a> JAM with Chrome. <a href="http://jamwithchrome.com/">JAM with Chrome</a> is an interactive web application that enables friends in different locations to play music together in the Chrome browser on their computers.<br /> <br /> <iframe allowfullscreen="allowfullscreen" frameborder="0" height="315" src="//www.youtube.com/embed/YkvKICWaRT4" width="560"></iframe> <br /> <br /> JAM with Chrome was built with the <a href="http://www.jamwithchrome.com/technology.html">latest browser technologies</a>:<br /> <ul> <li><a href="http://www.html5rocks.com/en/tutorials/webaudio/intro/">Web Audio</a> for high fidelity playback without resorting to lots of pre-recorded audio samples.  </li> <li><a href="http://www.html5rocks.com/en/tutorials/websockets/basics/">WebSockets</a> is used to deliver immediate real-time playback across all the members of the band ensuring they stay in sync and playing from the same tab sheet. </li> <li>Finally, <a href="http://html5search.com/search/css3">CSS3</a>, <a href="http://www.html5rocks.com/en/tutorials/svg/mobile_fundamentals/">SVG</a> and <a href="http://www.html5rocks.com/en/tutorials/canvas/integrating/">Canvas</a> provide rich visuals and an immersive experience.</li> </ul> To learn more about how we built this experience, check out “<a href="http://www.html5rocks.com/en/tutorials/casestudies/jamwithchrome-audio/">How we made the Audio rock</a>”. This is the first of three HTML5 Rocks articles that describes how the team used Web Audio to deliver an absorbing auditory experience. Stay tuned for more developer stories by following <a href="//google.com/+Google%20Chrome%20Developers">+Google Chrome Developers</a>.<br /> <br /> Enjoy playing music with friends at <a href="http://www.jamwithchrome.com/">www.jamwithchrome.com</a> and be sure to open Chrome’s <a href="https://developers.google.com/chrome-developer-tools/docs/overview">developer tools</a> to see what’s going on backstage!<br /> <span class="post-author"><br /></span> <span class="post-author">Posted by Paul Kinlan, Developer Advocate</span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </noscript> </div> </div> <div class='share'> <span class='twitter-custom social-wrapper' data-href='http://twitter.com/share?text=Chromium Blog:Backstage at JAM with Chrome&url=https://blog.chromium.org/2012/11/backstage-at-jam-with-chrome.html&via=ChromiumDev'> <img alt='Share on Twitter' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_twitter_black_24dp.png' width='24'/> </span> <span class='fb-custom social-wrapper' data-href='https://www.facebook.com/sharer.php?u=https://blog.chromium.org/2012/11/backstage-at-jam-with-chrome.html'> <img alt='Share on Facebook' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_facebook_black_24dp.png' width='24'/> </span> </div> <div class='post-footer'> <div class='cmt_iframe_holder' data-href='https://blog.chromium.org/2012/11/backstage-at-jam-with-chrome.html' data-viewtype='FILTERED_POSTMOD'></div> <a href='https://plus.google.com/112374322230920073195' rel='author' style='display:none;'> Google </a> <div class='label-footer'> <span class='labels-caption'> Labels: </span> <span class='labels'> <a class='label' href='https://blog.chromium.org/search/label/webaudio' rel='tag'> webaudio </a> , <a class='label' href='https://blog.chromium.org/search/label/websockets' rel='tag'> websockets </a> </span> </div> </div> </div> <div class='post' data-id='146246069021493528' itemscope='' itemtype='http://schema.org/BlogPosting'> <h2 class='title' itemprop='name'> <a href='https://blog.chromium.org/2012/11/a-web-developers-guide-to-latest-chrome.html' itemprop='url' title='A web developer’s guide to the latest Chrome Beta'> A web developer’s guide to the latest Chrome Beta </a> </h2> <div class='post-header'> <div class='published'> <span class='publishdate' itemprop='datePublished'> Thursday, November 8, 2012 </span> </div> </div> <div class='post-body'> <div class='post-content' itemprop='articleBody'> <script type='text/template'> Today’s Chrome <a href="https://www.google.com/landing/chrome/beta/">Beta channel release</a> includes a slew of awesome new developer features.<br /> <br /> <b>Datalist support in date and time</b><br /> <br /> <a href="http://demo.agektmr.com/datalist/">datalist</a> allows you to specify a list of suggested dates and times for input elements. Of course, users still have the freedom to enter arbitrary dates and times. One use case is helping users choose when their food should be ready for pickup:<br /> <br /> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZK1KzJLrqUYHzSj_E4t5L93o6jZfO5_jK8vMkanitfyTTbCQx0qXEIkk91wM2d5AVMjS5rDh2QE8NzqtFTKctBaBewDTrfhOzoVpmTFCPqKGLnfIzM6JclqmarlihoJEMwOPF-zbCseg/s1600/Screen+Shot+2012-11-08+at+10.15.27+AM.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="86" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZK1KzJLrqUYHzSj_E4t5L93o6jZfO5_jK8vMkanitfyTTbCQx0qXEIkk91wM2d5AVMjS5rDh2QE8NzqtFTKctBaBewDTrfhOzoVpmTFCPqKGLnfIzM6JclqmarlihoJEMwOPF-zbCseg/s400/Screen+Shot+2012-11-08+at+10.15.27+AM.png" width="400" /></a><br /> <br /> <b><br /></b> <b><br /></b> <b><br /></b> <b><br /></b><br /> <br /> <b>MathML</b><br /> <br /> Now you can write mathematical content in <a href="https://developer.mozilla.org/en-US/docs/MathML">MathML</a> and expect it to be consistently beautiful across the web. Special kudos to <a href="http://webkit.org/">WebKit</a> volunteer <a href="http://stackoverflow.com/questions/9018694/is-there-an-official-statement-of-when-mathml-will-be-available-on-the-iphone-ip/9024138#9024138">Dave Barton</a> for implementing this on his own accord.<br /> <br /> <br /> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEirIKt_R9Fe1KXkEYDwk4RE07tvI3WBpaq1CuZBvTQ3m8tZH7N2-VaMXjK9WasNGFm0yOr4psfLIbXdh8BN00jNE9ADtjK_QTZ-zWf8UK9GkavSd_3kNGgZItWBVYvt1pJQow6vTebeq2c/s1600/Screen+Shot+2012-11-08+at+10.17.31+AM.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="101" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEirIKt_R9Fe1KXkEYDwk4RE07tvI3WBpaq1CuZBvTQ3m8tZH7N2-VaMXjK9WasNGFm0yOr4psfLIbXdh8BN00jNE9ADtjK_QTZ-zWf8UK9GkavSd_3kNGgZItWBVYvt1pJQow6vTebeq2c/s400/Screen+Shot+2012-11-08+at+10.17.31+AM.png" width="400" /></a> <br /> <b><br /></b> <b>Other new features in this release</b><br /> <ul> <li><a href="http://adobe.github.com/web-platform/samples/css-customfilters/">CSS custom filters</a> have landed behind a <a href="http://blogs.adobe.com/cantrell/archives/2012/07/all-about-chrome-flags.html">flag</a>. They enable sweet cinematic effects like page flipping with just CSS and HTML. You can turn them on with <span style="font-family: Courier New, Courier, monospace;">chrome://flags</span>. </li> <li>Chromium now parses the <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/association-of-controls-and-forms.html#autofilling-form-controls:-the-autocomplete-attribute"><span style="font-family: Courier New, Courier, monospace;">autocomplete</span></a> attribute <a href="http://code.google.com/p/chromium/issues/detail?id=156508">according to spec</a>. Use it to specify which type of saved user data the browser should use to prefill input elements. Examples are <span style="font-family: Courier New, Courier, monospace;">name</span> and <span style="font-family: Courier New, Courier, monospace;">street-address</span>. </li> <li>A few brand new features landed with a prefix: <span style="font-family: Courier New, Courier, monospace;"><a href="https://bugs.webkit.org/attachment.cgi?id=149882&action=prettypatch">-webkit-hyphens</a></span> gives you more control over hyphenation at line breaks, and <span style="font-family: Courier New, Courier, monospace;">-webkit-clip-path</span> enables you to <a href="https://plus.google.com/118075919496626375791/posts/2n8PTisLztW">clip DOM content</a> to an SVG shape. </li> </ul> <b>Un-prefixed APIs </b><br /> <br /> APIs un-prefixed in today’s Beta release include:<br /> <ul> <li><a href="http://www.html5rocks.com/en/tutorials/indexeddb/todo/">IndexedDB</a>, a client-side storage API offering fast access to large amounts of structured data </li> <li><a href="http://norbertlindenberg.com/2012/10/ecmascript-internationalization-api/index.html#Intl"><span style="font-family: Courier New, Courier, monospace;">Intl</span></a>, which adds support for JavaScript internationalization of date format, number format, collation and non-standard segmentation, and more time zones </li> <li><span style="font-family: Courier New, Courier, monospace;"><a href="https://developer.mozilla.org/en-US/docs/DOM/window.postMessage">postMessage</a></span>, a feature enabling cross-origin communication (including <a href="http://updates.html5rocks.com/2011/12/Transferable-Objects-Lightning-Fast">support for fast transferable objects</a>) </li> <li><span style="font-family: Courier New, Courier, monospace;"><a href="http://www.html5rocks.com/en/tutorials/speed/animations/">requestAnimationFrame</a></span> for silky smooth JavaScript animations </li> <li><a href="http://updates.html5rocks.com/2012/08/When-milliseconds-are-not-enough-performance-now"><span style="font-family: Courier New, Courier, monospace;">performance.now()</span></a> for reliable, high-resolution timing </li> </ul> Today’s Beta release supports these APIs in both their prefixed and un-prefixed forms. If you’re currently using the prefixed versions, you should switch to the un-prefixed versions after today’s Beta release reaches the Stable channel. At that point the prefixed versions will be deprecated, and future releases may not support them.<br /> <br /> <b>Experiments removed in this release </b><br /> <br /> As the web platform evolves, support for some experiments has been removed. The <a href="http://updates.html5rocks.com/2012/06/Don-t-Build-Blobs-Construct-Them"><span style="font-family: Courier New, Courier, monospace;">Blob</span> constructor</a> should now be used instead of the <span style="font-family: inherit;">WebKitBlobBuilder A</span>PI, and the <span style="font-family: Courier New, Courier, monospace;">Blob.webkitSlice()</span> method is deprecated in favor of<span style="font-family: inherit;"> </span><b id="internal-source-marker_0.7631188819650561"><a href="https://bugs.webkit.org/show_bug.cgi?id=78111"><span style="color: #1155cc; font-weight: normal; vertical-align: baseline; white-space: pre-wrap;"><span style="font-family: Courier New, Courier, monospace;">Blob.slice()</span></span></a></b><span style="font-family: inherit;">.</span> We also gathered a lot of valuable data and feedback from our experimental support for <a href="http://webintents.org/">Web Intents</a> and <a href="https://plus.google.com/u/1/116171619992010691739/posts/gcXURKLN8bg">decided to disable</a> the feature in today's Beta release.<br /> <br /> <b>Stay in the loop </b><br /> <br /> Visit <a href="http://chromestatus.com/">chromestatus.com</a> for a complete overview of Chrome’s developer features, and circle <a href="https://plus.google.com/+GoogleChromeDevelopers">+Google Chrome Developers</a> for more frequent updates.<br /> <br /> We hope you enjoy this Beta release as much as we’ve enjoyed working on it!<br /> <span class="post-author"><br /></span> <span class="post-author">Posted by Peter Beverloo, Software Engineer and Web Platform Enthusiast</span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </script> <noscript> Today’s Chrome <a href="https://www.google.com/landing/chrome/beta/">Beta channel release</a> includes a slew of awesome new developer features.<br /> <br /> <b>Datalist support in date and time</b><br /> <br /> <a href="http://demo.agektmr.com/datalist/">datalist</a> allows you to specify a list of suggested dates and times for input elements. Of course, users still have the freedom to enter arbitrary dates and times. One use case is helping users choose when their food should be ready for pickup:<br /> <br /> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZK1KzJLrqUYHzSj_E4t5L93o6jZfO5_jK8vMkanitfyTTbCQx0qXEIkk91wM2d5AVMjS5rDh2QE8NzqtFTKctBaBewDTrfhOzoVpmTFCPqKGLnfIzM6JclqmarlihoJEMwOPF-zbCseg/s1600/Screen+Shot+2012-11-08+at+10.15.27+AM.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="86" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZK1KzJLrqUYHzSj_E4t5L93o6jZfO5_jK8vMkanitfyTTbCQx0qXEIkk91wM2d5AVMjS5rDh2QE8NzqtFTKctBaBewDTrfhOzoVpmTFCPqKGLnfIzM6JclqmarlihoJEMwOPF-zbCseg/s400/Screen+Shot+2012-11-08+at+10.15.27+AM.png" width="400" /></a><br /> <br /> <b><br /></b> <b><br /></b> <b><br /></b> <b><br /></b><br /> <br /> <b>MathML</b><br /> <br /> Now you can write mathematical content in <a href="https://developer.mozilla.org/en-US/docs/MathML">MathML</a> and expect it to be consistently beautiful across the web. Special kudos to <a href="http://webkit.org/">WebKit</a> volunteer <a href="http://stackoverflow.com/questions/9018694/is-there-an-official-statement-of-when-mathml-will-be-available-on-the-iphone-ip/9024138#9024138">Dave Barton</a> for implementing this on his own accord.<br /> <br /> <br /> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEirIKt_R9Fe1KXkEYDwk4RE07tvI3WBpaq1CuZBvTQ3m8tZH7N2-VaMXjK9WasNGFm0yOr4psfLIbXdh8BN00jNE9ADtjK_QTZ-zWf8UK9GkavSd_3kNGgZItWBVYvt1pJQow6vTebeq2c/s1600/Screen+Shot+2012-11-08+at+10.17.31+AM.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="101" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEirIKt_R9Fe1KXkEYDwk4RE07tvI3WBpaq1CuZBvTQ3m8tZH7N2-VaMXjK9WasNGFm0yOr4psfLIbXdh8BN00jNE9ADtjK_QTZ-zWf8UK9GkavSd_3kNGgZItWBVYvt1pJQow6vTebeq2c/s400/Screen+Shot+2012-11-08+at+10.17.31+AM.png" width="400" /></a> <br /> <b><br /></b> <b>Other new features in this release</b><br /> <ul> <li><a href="http://adobe.github.com/web-platform/samples/css-customfilters/">CSS custom filters</a> have landed behind a <a href="http://blogs.adobe.com/cantrell/archives/2012/07/all-about-chrome-flags.html">flag</a>. They enable sweet cinematic effects like page flipping with just CSS and HTML. You can turn them on with <span style="font-family: Courier New, Courier, monospace;">chrome://flags</span>. </li> <li>Chromium now parses the <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/association-of-controls-and-forms.html#autofilling-form-controls:-the-autocomplete-attribute"><span style="font-family: Courier New, Courier, monospace;">autocomplete</span></a> attribute <a href="http://code.google.com/p/chromium/issues/detail?id=156508">according to spec</a>. Use it to specify which type of saved user data the browser should use to prefill input elements. Examples are <span style="font-family: Courier New, Courier, monospace;">name</span> and <span style="font-family: Courier New, Courier, monospace;">street-address</span>. </li> <li>A few brand new features landed with a prefix: <span style="font-family: Courier New, Courier, monospace;"><a href="https://bugs.webkit.org/attachment.cgi?id=149882&action=prettypatch">-webkit-hyphens</a></span> gives you more control over hyphenation at line breaks, and <span style="font-family: Courier New, Courier, monospace;">-webkit-clip-path</span> enables you to <a href="https://plus.google.com/118075919496626375791/posts/2n8PTisLztW">clip DOM content</a> to an SVG shape. </li> </ul> <b>Un-prefixed APIs </b><br /> <br /> APIs un-prefixed in today’s Beta release include:<br /> <ul> <li><a href="http://www.html5rocks.com/en/tutorials/indexeddb/todo/">IndexedDB</a>, a client-side storage API offering fast access to large amounts of structured data </li> <li><a href="http://norbertlindenberg.com/2012/10/ecmascript-internationalization-api/index.html#Intl"><span style="font-family: Courier New, Courier, monospace;">Intl</span></a>, which adds support for JavaScript internationalization of date format, number format, collation and non-standard segmentation, and more time zones </li> <li><span style="font-family: Courier New, Courier, monospace;"><a href="https://developer.mozilla.org/en-US/docs/DOM/window.postMessage">postMessage</a></span>, a feature enabling cross-origin communication (including <a href="http://updates.html5rocks.com/2011/12/Transferable-Objects-Lightning-Fast">support for fast transferable objects</a>) </li> <li><span style="font-family: Courier New, Courier, monospace;"><a href="http://www.html5rocks.com/en/tutorials/speed/animations/">requestAnimationFrame</a></span> for silky smooth JavaScript animations </li> <li><a href="http://updates.html5rocks.com/2012/08/When-milliseconds-are-not-enough-performance-now"><span style="font-family: Courier New, Courier, monospace;">performance.now()</span></a> for reliable, high-resolution timing </li> </ul> Today’s Beta release supports these APIs in both their prefixed and un-prefixed forms. If you’re currently using the prefixed versions, you should switch to the un-prefixed versions after today’s Beta release reaches the Stable channel. At that point the prefixed versions will be deprecated, and future releases may not support them.<br /> <br /> <b>Experiments removed in this release </b><br /> <br /> As the web platform evolves, support for some experiments has been removed. The <a href="http://updates.html5rocks.com/2012/06/Don-t-Build-Blobs-Construct-Them"><span style="font-family: Courier New, Courier, monospace;">Blob</span> constructor</a> should now be used instead of the <span style="font-family: inherit;">WebKitBlobBuilder A</span>PI, and the <span style="font-family: Courier New, Courier, monospace;">Blob.webkitSlice()</span> method is deprecated in favor of<span style="font-family: inherit;"> </span><b id="internal-source-marker_0.7631188819650561"><a href="https://bugs.webkit.org/show_bug.cgi?id=78111"><span style="color: #1155cc; font-weight: normal; vertical-align: baseline; white-space: pre-wrap;"><span style="font-family: Courier New, Courier, monospace;">Blob.slice()</span></span></a></b><span style="font-family: inherit;">.</span> We also gathered a lot of valuable data and feedback from our experimental support for <a href="http://webintents.org/">Web Intents</a> and <a href="https://plus.google.com/u/1/116171619992010691739/posts/gcXURKLN8bg">decided to disable</a> the feature in today's Beta release.<br /> <br /> <b>Stay in the loop </b><br /> <br /> Visit <a href="http://chromestatus.com/">chromestatus.com</a> for a complete overview of Chrome’s developer features, and circle <a href="https://plus.google.com/+GoogleChromeDevelopers">+Google Chrome Developers</a> for more frequent updates.<br /> <br /> We hope you enjoy this Beta release as much as we’ve enjoyed working on it!<br /> <span class="post-author"><br /></span> <span class="post-author">Posted by Peter Beverloo, Software Engineer and Web Platform Enthusiast</span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </noscript> </div> </div> <div class='share'> <span class='twitter-custom social-wrapper' data-href='http://twitter.com/share?text=Chromium Blog:A web developer’s guide to the latest Chrome Beta&url=https://blog.chromium.org/2012/11/a-web-developers-guide-to-latest-chrome.html&via=ChromiumDev'> <img alt='Share on Twitter' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_twitter_black_24dp.png' width='24'/> </span> <span class='fb-custom social-wrapper' data-href='https://www.facebook.com/sharer.php?u=https://blog.chromium.org/2012/11/a-web-developers-guide-to-latest-chrome.html'> <img alt='Share on Facebook' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_facebook_black_24dp.png' width='24'/> </span> </div> <div class='post-footer'> <div class='cmt_iframe_holder' data-href='https://blog.chromium.org/2012/11/a-web-developers-guide-to-latest-chrome.html' data-viewtype='FILTERED_POSTMOD'></div> <a href='https://plus.google.com/112374322230920073195' rel='author' style='display:none;'> Google </a> <div class='label-footer'> </div> </div> </div> <div class='post' data-id='5091758005433029582' itemscope='' itemtype='http://schema.org/BlogPosting'> <h2 class='title' itemprop='name'> <a href='https://blog.chromium.org/2012/11/introducing-tcp-listen-new-api-for.html' itemprop='url' title='Introducing TCP Listen, a new API for Chrome packaged apps'> Introducing TCP Listen, a new API for Chrome packaged apps </a> </h2> <div class='post-header'> <div class='published'> <span class='publishdate' itemprop='datePublished'> Friday, November 2, 2012 </span> </div> </div> <div class='post-body'> <div class='post-content' itemprop='articleBody'> <script type='text/template'> <a href="http://developer.chrome.com/trunk/apps/about_apps.html">Chrome packaged apps</a> aim to deliver an app experience with the appearance and capabilities of native apps, but built using the growing capabilities of HTML5. These apps can access APIs for better filesystem handling, direct access to hardware devices, raw network communication and <a href="http://developer.chrome.com/trunk/apps/api_index.html">many others</a>. One of the new APIs that just landed in an experimental state is <a href="http://developer.chrome.com/trunk/apps/socket.html#method-listen">TCP Listen</a>, which allows an app to accept incoming TCP connections.<br /> <br /> Since the developer preview launch <a href="http://blog.chromium.org/2012/08/the-evolution-of-chrome-packaged-apps.html">earlier this year</a>, Chrome packaged apps have been able to connect to remote servers using TCP or UDP, and bind to a UDP port. For example, this <a href="http://developer.chrome.com/trunk/apps/sencha_framework.html">Media Center application</a> searches for and connects to media servers in the local network. Now, through the new TCP Listen API, a Chrome packaged app can also act as a TCP server itself and accept incoming connections on specified ports.<br /> <br /> You can use this API, for example, to create a <a href="https://github.com/GoogleChrome/chrome-app-samples/tree/master/webserver">HTTP server</a> on a development environment application, to <a href="https://github.com/GoogleChrome/chrome-app-samples/tree/master/tcpserver">automate a browser window</a> for page load testing (see image below) or even to augment the <a href="http://developer.chrome.com/trunk/apps/sencha_framework.html">Media Center application</a> with a <a href="http://en.wikipedia.org/wiki/Digital_Living_Network_Alliance">DLNA®/UPnP</a> media server and show your PicasaWeb pictures on your DLNA® enabled television.<br /> <br /> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJB5llZuYS6UOyts645ea9Wmi3fWStI3smUFIsoye-xyBs0loY8JADqDIo2tP8O8LWDDaz_sxWvW0tXPPy5Ix4n7jUUtxcwz_-JvrdG4SHuDOtuOP4z4GLGOoyN40Si4SxMyPeWI2z8aU/s1600/screenshot_tcpserver.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="136" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJB5llZuYS6UOyts645ea9Wmi3fWStI3smUFIsoye-xyBs0loY8JADqDIo2tP8O8LWDDaz_sxWvW0tXPPy5Ix4n7jUUtxcwz_-JvrdG4SHuDOtuOP4z4GLGOoyN40Si4SxMyPeWI2z8aU/s400/screenshot_tcpserver.png" width="400" /></a> <br /> <br /> To get started, clone this <a href="http://github.com/GoogleChrome/chrome-app-samples">GitHub repository</a> and look at the <a href="https://github.com/GoogleChrome/chrome-app-samples/tree/master/webserver">webserver</a> and the <a href="https://github.com/GoogleChrome/chrome-app-samples/tree/master/tcpserver">TCP server</a> samples. You may also want to watch the <a href="https://developers.google.com/live/shows/ahNzfmdvb2dsZS1kZXZlbG9wZXJzchoLEgVFdmVudBjW474DDAsSBUV2ZW50GIknDA/">Chrome Apps Office Hours</a> where we specifically talk about the TCP Listen API.<br /> <br /> We are curious to see what clever ideas you will come up with. Have questions or comments? Subscribe to <a href="https://groups.google.com/a/chromium.org/group/chromium-apps">chromium-apps</a> and let us know!<br /> <span class="post-author"><br /></span> <span class="post-author">Posted by Renato Mangini, Developer Advocate </span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </script> <noscript> <a href="http://developer.chrome.com/trunk/apps/about_apps.html">Chrome packaged apps</a> aim to deliver an app experience with the appearance and capabilities of native apps, but built using the growing capabilities of HTML5. These apps can access APIs for better filesystem handling, direct access to hardware devices, raw network communication and <a href="http://developer.chrome.com/trunk/apps/api_index.html">many others</a>. One of the new APIs that just landed in an experimental state is <a href="http://developer.chrome.com/trunk/apps/socket.html#method-listen">TCP Listen</a>, which allows an app to accept incoming TCP connections.<br /> <br /> Since the developer preview launch <a href="http://blog.chromium.org/2012/08/the-evolution-of-chrome-packaged-apps.html">earlier this year</a>, Chrome packaged apps have been able to connect to remote servers using TCP or UDP, and bind to a UDP port. For example, this <a href="http://developer.chrome.com/trunk/apps/sencha_framework.html">Media Center application</a> searches for and connects to media servers in the local network. Now, through the new TCP Listen API, a Chrome packaged app can also act as a TCP server itself and accept incoming connections on specified ports.<br /> <br /> You can use this API, for example, to create a <a href="https://github.com/GoogleChrome/chrome-app-samples/tree/master/webserver">HTTP server</a> on a development environment application, to <a href="https://github.com/GoogleChrome/chrome-app-samples/tree/master/tcpserver">automate a browser window</a> for page load testing (see image below) or even to augment the <a href="http://developer.chrome.com/trunk/apps/sencha_framework.html">Media Center application</a> with a <a href="http://en.wikipedia.org/wiki/Digital_Living_Network_Alliance">DLNA®/UPnP</a> media server and show your PicasaWeb pictures on your DLNA® enabled television.<br /> <br /> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJB5llZuYS6UOyts645ea9Wmi3fWStI3smUFIsoye-xyBs0loY8JADqDIo2tP8O8LWDDaz_sxWvW0tXPPy5Ix4n7jUUtxcwz_-JvrdG4SHuDOtuOP4z4GLGOoyN40Si4SxMyPeWI2z8aU/s1600/screenshot_tcpserver.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="136" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJB5llZuYS6UOyts645ea9Wmi3fWStI3smUFIsoye-xyBs0loY8JADqDIo2tP8O8LWDDaz_sxWvW0tXPPy5Ix4n7jUUtxcwz_-JvrdG4SHuDOtuOP4z4GLGOoyN40Si4SxMyPeWI2z8aU/s400/screenshot_tcpserver.png" width="400" /></a> <br /> <br /> To get started, clone this <a href="http://github.com/GoogleChrome/chrome-app-samples">GitHub repository</a> and look at the <a href="https://github.com/GoogleChrome/chrome-app-samples/tree/master/webserver">webserver</a> and the <a href="https://github.com/GoogleChrome/chrome-app-samples/tree/master/tcpserver">TCP server</a> samples. You may also want to watch the <a href="https://developers.google.com/live/shows/ahNzfmdvb2dsZS1kZXZlbG9wZXJzchoLEgVFdmVudBjW474DDAsSBUV2ZW50GIknDA/">Chrome Apps Office Hours</a> where we specifically talk about the TCP Listen API.<br /> <br /> We are curious to see what clever ideas you will come up with. Have questions or comments? Subscribe to <a href="https://groups.google.com/a/chromium.org/group/chromium-apps">chromium-apps</a> and let us know!<br /> <span class="post-author"><br /></span> <span class="post-author">Posted by Renato Mangini, Developer Advocate </span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </noscript> </div> </div> <div class='share'> <span class='twitter-custom social-wrapper' data-href='http://twitter.com/share?text=Chromium Blog:Introducing TCP Listen, a new API for Chrome packaged apps&url=https://blog.chromium.org/2012/11/introducing-tcp-listen-new-api-for.html&via=ChromiumDev'> <img alt='Share on Twitter' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_twitter_black_24dp.png' width='24'/> </span> <span class='fb-custom social-wrapper' 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href='https://blog.chromium.org/search/label/chrome%20on%20ios'> chrome on ios </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Chrome%20on%20Mac'> Chrome on Mac </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Chrome%20OS'> Chrome OS </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chrome%20privacy'> chrome privacy </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chrome%20releases'> chrome releases </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chrome%20security'> chrome security </a> <span dir='ltr'> 10 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chrome%20web%20store'> chrome web store </a> <span dir='ltr'> 32 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chromedevtools'> chromedevtools </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chromeframe'> chromeframe </a> <span dir='ltr'> 3 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chromeos'> chromeos </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chromeos.dev'> chromeos.dev </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chromium'> chromium </a> <span dir='ltr'> 9 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/cloud%20print'> cloud print </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/coalition'> coalition </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/coalition%20for%20better%20ads'> coalition for better ads </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/contact%20picker'> contact picker </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/content%20indexing'> content indexing </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/cookies'> cookies </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/core%20web%20vitals'> core web vitals </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/csrf'> csrf </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/css'> css </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/cumulative%20layout%20shift'> cumulative layout shift </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/custom%20tabs'> custom tabs </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/dart'> dart </a> <span dir='ltr'> 8 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/dashboard'> dashboard </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Data%20Saver'> Data Saver </a> <span dir='ltr'> 3 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Data%20saver%20desktop%20extension'> Data saver desktop extension </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/day%202'> day 2 </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/deceptive%20installation'> deceptive installation </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/declarative%20net%20request%20api'> declarative net request api </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/design'> design </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/developer%20dashboard'> developer dashboard </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Developer%20Program%20Policy'> Developer Program Policy </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/developer%20website'> developer website </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/devtools'> devtools </a> <span dir='ltr'> 13 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/digital%20event'> digital event </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/discoverability'> discoverability </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/DNS-over-HTTPS'> DNS-over-HTTPS </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/DoH'> DoH </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/emoji'> emoji </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/emscriptem'> emscriptem </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/enterprise'> enterprise </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/extensions'> extensions </a> <span dir='ltr'> 27 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Fast%20badging'> Fast badging </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/faster%20web'> faster web </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/features'> features </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/feedback'> feedback </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/field%20data'> field data </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/first%20input%20delay'> first input delay </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Follow'> Follow </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/fonts'> fonts </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/form%20controls'> form controls </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/frameworks'> frameworks </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/fugu'> fugu </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/fund'> fund </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/funding'> funding </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/gdd'> gdd </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/google%20earth'> google earth </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/google%20event'> google event </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/google%20io%202019'> google io 2019 </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/google%20web%20developer'> google web developer </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/googlechrome'> googlechrome </a> <span dir='ltr'> 12 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/harmful%20ads'> harmful ads </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/html5'> html5 </a> <span dir='ltr'> 11 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/HTTP%2F3'> HTTP/3 </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/HTTPS'> HTTPS </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/iframes'> iframes </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/images'> images </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/incognito'> incognito </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/insecure%20forms'> insecure forms </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/intent%20to%20explain'> intent to explain </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/ios'> ios </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/ios%20Chrome'> ios Chrome </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/issue%20tracker'> issue tracker </a> <span dir='ltr'> 3 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/jank'> jank </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/javascript'> javascript </a> <span dir='ltr'> 5 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/lab%20data'> lab data </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/labelling'> labelling </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/largest%20contentful%20paint'> largest contentful paint </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/launch'> launch </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/lazy-loading'> lazy-loading </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/lighthouse'> lighthouse </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/linux'> linux </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Lite%20Mode'> Lite Mode </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Lite%20pages'> Lite pages </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/loading%20interventions'> loading interventions </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/loading%20optimizations'> loading optimizations </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/lock%20icon'> lock icon </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/long-tail'> long-tail </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/mac'> mac </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/manifest%20v3'> manifest v3 </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/metrics'> metrics </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/microsoft%20edge'> microsoft edge </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/mixed%20forms'> mixed forms </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/mobile'> mobile </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/na'> na </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/native%20client'> native client </a> <span dir='ltr'> 8 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/native%20file%20system'> native file system </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/New%20Features'> New Features </a> <span dir='ltr'> 5 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/notifications'> notifications </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/octane'> octane </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/open%20web'> open web </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/origin%20trials'> origin trials </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/pagespeed%20insights'> pagespeed insights </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/pagespeedinsights'> pagespeedinsights </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/passwords'> passwords </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/payment%20handler'> payment handler </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/payment%20request'> payment request </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/payments'> payments </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/performance'> performance </a> <span dir='ltr'> 20 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/performance%20tools'> performance tools </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/permission%20UI'> permission UI </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/permissions'> permissions </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/play%20store'> play store </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/portals'> portals </a> <span dir='ltr'> 3 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/prefetching'> prefetching </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/privacy'> privacy </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/privacy%20sandbox'> privacy sandbox </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/private%20prefetch%20proxy'> private prefetch proxy </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/profile%20guided%20optimization'> profile guided optimization </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/progressive%20web%20apps'> progressive web apps </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Project%20Strobe'> Project Strobe </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/protection'> protection </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/pwa'> pwa </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/QUIC'> QUIC </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/quieter%20permissions'> quieter permissions </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/releases'> releases </a> <span dir='ltr'> 3 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/removals'> removals </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/rlz'> rlz </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/root%20program'> root program </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/safe%20browsing'> safe browsing </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Secure%20DNS'> Secure DNS </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/security'> security </a> <span dir='ltr'> 36 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/site%20isolation'> site isolation </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/slow%20loading'> slow loading </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/sms%20receiver'> sms receiver </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/spam%20policy'> spam policy </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/spdy'> spdy </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/spectre'> spectre </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/speed'> speed </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/ssl'> ssl </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/store%20listing'> store listing </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/strobe'> strobe </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/subscription%20pages'> subscription pages </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/suspicious%20site%20reporter%20extension'> suspicious site reporter extension </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/TCP'> TCP </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/the%20fast%20and%20the%20curious'> the fast and the curious </a> <span dir='ltr'> 23 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/TLS'> TLS </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/tools'> tools </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/tracing'> tracing </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/transparency'> transparency </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/trusted%20web%20activities'> trusted web activities </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/twa'> twa </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/user%20agent%20string'> user agent string </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/user%20data%20policy'> user data policy </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/v8'> v8 </a> <span dir='ltr'> 6 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/video'> video </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/wasm'> wasm </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/web'> web </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/web%20apps'> web apps </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' 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class=''> <a class='post-count-link' href='https://blog.chromium.org/2018/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2018/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2018/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2017/'> 2017 </a> </div> <div class='items'> <ul class='hierarchy'> 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class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2017/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2017/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2017/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2017/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2017/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2017/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2017/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2016/'> 2016 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2016/12/'> Dec </a> </div> <div class='items'> 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class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2014/'> 2014 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2013/'> 2013 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate expanded'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy toggle-open'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2012/'> 2012 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate expanded'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2011/'> 2011 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2010/'> 2010 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2010/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' 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class=''> <a class='post-count-link' href='https://blog.chromium.org/2009/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2009/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2009/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2009/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: 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style='margin-top: -16px;' width='92'/> </a> <ul> <li> <a href='//www.google.com/'> Google </a> </li> <li> <a href='//www.google.com/policies/privacy/'> Privacy </a> </li> <li> <a href='//www.google.com/policies/terms/'> Terms </a> </li> </ul> </div> </div> <script type='text/javascript'> //<![CDATA[ // Social sharing popups. var postEl = document.getElementsByClassName('social-wrapper'); var postCount = postEl.length; for(i=0; i<postCount;i++){ postEl[i].addEventListener("click", function(event){ var postUrl = this.getAttribute("data-href"); window.open( postUrl,'popUpWindow','height=500,width=500,left=10,top=10,resizable=yes,scrollbars=yes,toolbar=yes,menubar=no,location=no,directories=no,status=yes'); });} //]]> </script> <script type='text/javascript'> //<![CDATA[ var BreakpointHandler = function() { this.initted = false; this.isHomePage = false; this.isMobile = false; }; BreakpointHandler.prototype.finalizeSummary = function(summaryHtml, lastNode) { // Use $.trim for IE8 compatibility summaryHtml = $.trim(summaryHtml).replace(/(<br>|\s)+$/,''); if (lastNode.nodeType == 3) { var lastChar = summaryHtml.slice(-1); if (!lastChar.match(/[.”"?]/)) { if (!lastChar.match(/[A-Za-z]/)) { summaryHtml = summaryHtml.slice(0, -1); } summaryHtml += ' ...'; } } else if (lastNode.nodeType == 1 && (lastNode.nodeName == 'I' || lastNode.nodeName == 'A')) { summaryHtml += ' ...'; } return summaryHtml; }; BreakpointHandler.prototype.generateSummaryFromContent = function(content, numWords) { var seenWords = 0; var summaryHtml = ''; for (var i=0; i < content.childNodes.length; i++) { var node = content.childNodes[i]; var nodeText; if (node.nodeType == 1) { if (node.hasAttribute('data-about-pullquote')) { continue; } nodeText = node.textContent; if (nodeText === undefined) { // innerText for IE8 nodeText = node.innerText; } if (node.nodeName == 'DIV' || node.nodeName == 'B') { // Don't end early if we haven't seen enough words. if (seenWords < 10) { continue; } if (i > 0) { summaryHtml = this.finalizeSummary(summaryHtml, content.childNodes[i-1]); } break; } summaryHtml += node.outerHTML; } else if (node.nodeType == 3) { nodeText = node.nodeValue; summaryHtml += nodeText + ' '; } var words = nodeText.match(/\S+\s*/g); if (!words) { continue; } var remain = numWords - seenWords; if (words.length >= remain) { summaryHtml = this.finalizeSummary(summaryHtml, node); break; } seenWords += words.length; } return summaryHtml; }; BreakpointHandler.prototype.detect = function() { var match, pl = /\+/g, search = /([^&=]+)=?([^&]*)/g, decode = function (s) { return decodeURIComponent(s.replace(pl, " ")); }, query = window.location.search.substring(1); var urlParams = {}; while (match = search.exec(query)) urlParams[decode(match[1])] = decode(match[2]); this.isListPage = $('html').hasClass('list-page'); this.isMobile = urlParams['m'] === '1'; this.isHomePage = window.location.pathname == '/'; }; BreakpointHandler.prototype.initContent = function() { var self = this; $('.post').each(function(index) { var body = $(this).children('.post-body')[0]; var content = $(body).children('.post-content')[0]; $(content).addClass('post-original'); var data = $(content).children('script').html(); data = self.rewriteForSSL(data); // If exists, extract specified editor's preview. var match = data.match(/([\s\S]+?)<div data-is-preview.+?>([\s\S]+)<\/div>/m); if (match) { data = match[1]; } // Prevent big images from loading when they aren't needed. // This must be done as a pre-injection step, since image loading can't be // canceled once embedded into the DOM. if (self.isListPage && self.isMobile) { data = data.replace(/<(img|iframe) .+?>/g, ''); } // Insert template to be rendered as nodes. content.innerHTML = data; if (self.isListPage) { var summary = document.createElement('div'); $(summary).addClass('post-content'); $(summary).addClass('post-summary'); body.insertBefore(summary, content); if (match) { // Use provided summary. summary.innerHTML = match[2]; } 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