[test] Add core `test-http-host-headers` test

Modifications:

  * make client connect to `PROXY_PORT` instead of `PORT`
  * remove https part
  * change assertion to match `PROXY_PORT` instead of `PORT`

test/core/simple/test-http-host-headers.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.
+
+// libuv-broken
+
+
+var http = require('http'),
+    common = require('../common'),
+    assert = require('assert'),
+    httpServer = http.createServer(reqHandler);
+
+function reqHandler(req, res) {
+  console.log('Got request: ' + req.headers.host + ' ' + req.url);
+  if (req.url === '/setHostFalse5') {
+    assert.equal(req.headers.host, undefined);
+  } else {
+    assert.equal(req.headers.host, 'localhost:' + common.PROXY_PORT,
+                 'Wrong host header for req[' + req.url + ']: ' +
+                 req.headers.host);
+  }
+  res.writeHead(200, {});
+  //process.nextTick(function() { res.end('ok'); });
+  res.end('ok');
+}
+
+function thrower(er) {
+  throw er;
+}
+
+testHttp();
+
+function testHttp() {
+
+  console.log('testing http on port ' + common.PROXY_PORT + ' (proxied to ' +
+              common.PORT + ')');
+
+  var counter = 0;
+
+  function cb() {
+    counter--;
+    console.log('back from http request. counter = ' + counter);
+    if (counter === 0) {
+      httpServer.close();
+    }
+  }
+
+  httpServer.listen(common.PORT, function(er) {
+    console.error('listening on ' + common.PORT);
+
+    if (er) throw er;
+
+    http.get({ method: 'GET',
+      path: '/' + (counter++),
+      host: 'localhost',
+      //agent: false,
+      port: common.PROXY_PORT }, cb).on('error', thrower);
+
+    http.request({ method: 'GET',
+      path: '/' + (counter++),
+      host: 'localhost',
+      //agent: false,
+      port: common.PROXY_PORT }, cb).on('error', thrower).end();
+
+    http.request({ method: 'POST',
+      path: '/' + (counter++),
+      host: 'localhost',
+      //agent: false,
+      port: common.PROXY_PORT }, cb).on('error', thrower).end();
+
+    http.request({ method: 'PUT',
+      path: '/' + (counter++),
+      host: 'localhost',
+      //agent: false,
+      port: common.PROXY_PORT }, cb).on('error', thrower).end();
+
+    http.request({ method: 'DELETE',
+      path: '/' + (counter++),
+      host: 'localhost',
+      //agent: false,
+      port: common.PROXY_PORT }, cb).on('error', thrower).end();
+  });
+}
+