[NaCl SDK] Add UDP and TCP Sockets

native_client_sdk/src/libraries/nacl_io_socket_test/example.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.
 // Called by the common.js module.
+
+function runTCPEchoServer(port) {
+  console.log("Starting server on TCP port: " + port);
+  chrome.socket.create("tcp", {}, function(createInfo) {
+    var listeningSocket = createInfo.socketId;
+    chrome.socket.listen(listeningSocket,
+                         '127.0.0.1',
+                         port,
+                         10,
+                         function(result) {
+      if (result !== 0) {
+        console.log("Listen failed: " + result);
+        return;
+      }
+
+      chrome.socket.accept(listeningSocket, function(acceptInfo) {
+        if (result !== 0) {
+          console.log("Accept failed: " + result);
+          return;
+        }
+
+        var newSock = acceptInfo.socketId;
+
+        var readCallback = function(readInfo) {
+          if (readInfo.resultCode < 0) {
+            console.log("Read failed: " + readInfo.resultCode);
+            chrome.socket.destroy(newSock);
+            return;
+          }
+
+          chrome.socket.write(newSock, readInfo.data, function(writeInfo) {})
+          chrome.socket.read(newSock, readCallback);
+        }
+
+        chrome.socket.read(newSock, readCallback);
+      })
+    })
+  })
+}
+
 function moduleDidLoad() {
   // The module is not hidden by default so we can easily see if the plugin
   // failed to load.
   common.hideModule();
+  runTCPEchoServer(4006);
 }
 
 var currentTestEl = null;
 
 function startCommand(testName) {
   var testListEl = document.getElementById('tests');
   var testEl = document.createElement('li');
   var testRowEl = document.createElement('div');
   var testNameEl = document.createElement('span');
   var testResultEl = document.createElement('span');
@@ skipping 57 matching lines @@
       argList = argList.substr(comma + 1);
     }
     args.push(arg);
   }
 
   // Last argument is the rest of the message.
   args.push(argList);
 
   cmdFunction.apply(null, args);
 }