Add bind(), recvFrom(), sendTo() for UDP socket.

chrome/test/data/extensions/api_test/socket/api/background.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // net/tools/testserver/testserver.py is picky about the format of what it
 // calls its "echo" messages. One might go so far as to mutter to oneself that
 // it isn't an echo server at all.
 //
 // The response is based on the request but obfuscated using a random key.
 const request = "0100000005320000005hello";
@@ skipping 54 matching lines @@
     chrome.test.assertTrue(socketInfo.socketId > 0);
 
     // TODO(miket): this doesn't work yet. It's possible this will become
     // automatic, but either way we can't forget to clean up.
     //
     //socket.destroy(socketInfo.socketId);
 
     chrome.test.succeed();
   }
 
-  socket.create(protocol, address, port, {onEvent: function(e) {}}, onCreate);
+  socket.create(protocol, {onEvent: function(e) {}}, onCreate);
 };
 
 function onDataRead(readInfo) {
   if (readInfo.resultCode > 0 || readInfo.data.length > 0) {
     chrome.test.assertEq(readInfo.resultCode, readInfo.data.length);
   }
 
   // TODO(miket): this isn't correct for multiple calls of onDataRead.
   arrayBuffer2String(arrayOfLongsToArrayBuffer(readInfo.data), function(s) {
       dataAsString = s;  // save this for error reporting
       if (s.match(expectedResponsePattern)) {
         succeeded = true;
         chrome.test.succeed();
       }
     });
   // Blocked. Wait for onEvent.
 }
 
-function onWriteComplete(writeInfo) {
+function onWriteOrSendToComplete(writeInfo) {
   bytesWritten += writeInfo.bytesWritten;
   if (bytesWritten == request.length) {
-    socket.read(socketId, onDataRead);
+    if (protocol == "tcp")
+      socket.read(socketId, onDataRead);
+    else
+      socket.recvFrom(socketId, onDataRead);
   }
   // Blocked. Wait for onEvent.
 }
 
-function onConnectComplete(connectResult) {
+function onConnectOrBindComplete(connectResult) {
   if (connectResult == 0) {
     string2ArrayBuffer(request, function(arrayBuffer) {
         var longs = arrayBufferToArrayOfLongs(arrayBuffer);
-        socket.write(socketId, longs, onWriteComplete);
+        if (protocol == "tcp")
+          socket.write(socketId, longs, onWriteOrSendToComplete);
+        else
+          socket.sendTo(socketId, longs, address, port,
+              onWriteOrSendToComplete);
       });
   }
   // Blocked. Wait for onEvent.
 }
 
 function onCreate(socketInfo) {
   socketId = socketInfo.socketId;
   chrome.test.assertTrue(socketId > 0, "failed to create socket");
-  socket.connect(socketId, onConnectComplete);
+  if (protocol == "tcp")
+    socket.connect(socketId, address, port, onConnectOrBindComplete);
+  else
+    socket.bind(socketId, "0.0.0.0", 0, onConnectOrBindComplete);
 }
 
 function onEvent(socketEvent) {
   if (socketEvent.type == "connectComplete") {
-    onConnectComplete(socketEvent.resultCode);
+    onConnectOrBindComplete(socketEvent.resultCode);
   } else if (socketEvent.type == "dataRead") {
     onDataRead({resultCode: socketEvent.resultCode, data: socketEvent.data});
   } else if (socketEvent.type == "writeComplete") {
-    onWriteComplete(socketEvent.resultCode);
+    onWriteOnSendToComplete(socketEvent.resultCode);
   } else {
     console.log("Received unhandled socketEvent of type " + socketEvent.type);
   }
 };
 
 function waitForBlockingOperation() {
   if (++waitCount < 10) {
     setTimeout(waitForBlockingOperation, 1000);
   } else {
     // We weren't able to succeed in the given time.
     chrome.test.fail("Operations didn't complete after " + waitCount + " " +
                      "seconds. Response so far was <" + dataAsString + ">.");
   }
 }
 
 var testSending = function() {
   dataRead = "";
   succeeded = false;
   waitCount = 0;
 
   setTimeout(waitForBlockingOperation, 1000);
-  socket.create(protocol, address, port, { onEvent: onEvent }, onCreate);
+  socket.create(protocol, {onEvent: onEvent}, onCreate);
 };
 
 var onMessageReply = function(message) {
   var parts = message.split(":");
   protocol = parts[0];
   address = parts[1];
   port = parseInt(parts[2]);
   console.log("Running tests, protocol " + protocol + ", echo server " +
               address + ":" + port);
   chrome.test.runTests([ testSocketCreation, testSending ]);
 };
 
 // Find out which protocol we're supposed to test, and which echo server we
 // should be using, then kick off the tests.
 chrome.test.sendMessage("info_please", onMessageReply);