Extensions Docs Server: devtools API

chrome/common/extensions/docs/server2/templates/intros/devtools_network.html

Index: chrome/common/extensions/docs/server2/templates/intros/devtools_network.html
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+<!-- BEGIN AUTHORED CONTENT -->
+<p id="classSummary">
+Use the <code>chrome.devtools.network</code> module to retrieve
+the information about network requests displayed by the Developer Tools
+in the Network panel.
+</p><p>
+See <a href="devtools.html">DevTools APIs summary</a> for
+general introduction to using Developer Tools APIs</a>.
+</p>
+
+<h2>Overview</h2>
+
+<p>
+Network requests information is represented in the HTTP Archive format
+(<em>HAR</em>). The description of HAR is outside of scope of this document,
+please refer to <a href=
+"http://www.softwareishard.com/blog/har-12-spec/">
+HAR v1.2 Specification</a>.
+</p><p>
+In terms of HAR, the
+<code>chrome.devtools.network.getHAR()</code> method returns
+entire <em>HAR log</em>, while
+<code>chrome.devtools.network.onRequestFinished</code> event
+provides <em>HAR entry</em> as an argument to the event callback.
+</p>
+<p>Note that request content is not provided as part of HAR for efficieny
+reasons. You may call request's <code>getContent()</code> method to retrieve
+content.
+<p>If the Developer Tools window is opened after the page is loaded,
+some requests may be missing
+in the array of entries returned by <code>getHAR()</code>.
+Reload the page to get all requests.
+In general, the list of
+requests returned by <code>getHAR()</code> should match that displayed in
+the Network panel.
+<h2 id="overview-examples">Examples</h2>
+
+<p>The following code logs URLs of all images larger than 40KB as they are
+loaded:</p>
+
+<pre>
+chrome.devtools.network.onRequestFinished.addListener(
+    function(request) {
+      if (request.response.bodySize > 40*1024)
+      chrome.experimental.devtools.console.addMessage(
+          chrome.experimental.devtools.console.Severity.Warning,
+          "Large image: " + request.request.url);
+});
+</pre>
+
+<p>
+You can find more examples that use this API in
+<a href="samples.html#devtools.network">Samples</a>.
+</p>
+
+<!-- END AUTHORED CONTENT -->