[test] Add core `test-http-extra-response` test

Modifications:

  * make client connect to `PROXY_PORT` instead of `PORT`

test/core/simple/test-http-extra-response.js

+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+var common = require('../common');
+var assert = require('assert');
+var http = require('http');
+var net = require('net');
+
+// If an HTTP server is broken and sends data after the end of the response,
+// node should ignore it and drop the connection.
+// Demos this bug: https://github.com/ry/node/issues/680
+
+var body = 'hello world\r\n';
+var fullResponse =
+    'HTTP/1.1 500 Internal Server Error\r\n' +
+    'Content-Length: ' + body.length + '\r\n' +
+    'Content-Type: text/plain\r\n' +
+    'Date: Fri + 18 Feb 2011 06:22:45 GMT\r\n' +
+    'Host: 10.20.149.2\r\n' +
+    'Access-Control-Allow-Credentials: true\r\n' +
+    'Server: badly broken/0.1 (OS NAME)\r\n' +
+    '\r\n' +
+    body;
+
+var gotResponse = false;
+
+
+var server = net.createServer(function(socket) {
+  var postBody = '';
+
+  socket.setEncoding('utf8');
+
+  socket.on('data', function(chunk) {
+    postBody += chunk;
+
+    if (postBody.indexOf('\r\n') > -1) {
+      socket.write(fullResponse);
+      // omg, I wrote the response twice, what a terrible HTTP server I am.
+      socket.end(fullResponse);
+    }
+  });
+});
+
+
+server.listen(common.PORT, function() {
+  http.get({ port: common.PROXY_PORT }, function(res) {
+    var buffer = '';
+    console.log('Got res code: ' + res.statusCode);
+
+    res.setEncoding('utf8');
+    res.on('data', function(chunk) {
+      buffer += chunk;
+    });
+
+    res.on('end', function() {
+      console.log('Response ended, read ' + buffer.length + ' bytes');
+      assert.equal(body, buffer);
+      server.close();
+      gotResponse = true;
+    });
+  });
+});
+
+
+process.on('exit', function() {
+  assert.ok(gotResponse);
+});
+