Test that debug stub works with browser.

net/base/tcp_listen_socket.cc

 // 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.
 
 #include "net/base/tcp_listen_socket.h"
 
 #if defined(OS_WIN)
 // winsock2.h must be included first in order to ensure it is included before
 // windows.h.
 #include <winsock2.h>
@@ skipping 58 matching lines @@
 #elif defined(OS_POSIX)
       close(s);
 #endif
       LOG(ERROR) << "Could not bind socket to " << ip << ":" << port;
       s = kInvalidSocket;
     }
   }
   return s;
 }
 
+SocketDescriptor TCPListenSocket::CreateAndBindAnyPort(const std::string& ip,
+                                                       int* port) {
+  SocketDescriptor s = CreateAndBind(ip, 0);

[szym, 2012/12/05 18:21:37]

You are passing port == 0 to |bind|, which invokes unspecified behavior,
although it seems that most Unix stacks support this.

I suggest that instead of adding custom |CreateAndBindAnyPort| and externally
calling |listen|, you do: 

scoped_refptr<TCPListenSocket> sock =
    TCPListenSocket::CreateAndListen(ip, 0, NULL);

IPEndPoint endpoint;
GetLocalAddress(&endpoint);
int port = endpoint.port();

[szym, 2012/12/05 18:22:31]

Sorry, ignore this comment. I forgot to delete it.

+  sockaddr_in addr;
+  socklen_t addr_size = sizeof(addr);
+  bool failed = getsockname(s, (struct sockaddr *) &addr, &addr_size) != 0;
+  if (addr_size != sizeof(addr)) {
+    failed = true;
+  }
+  if (failed) {
+    LOG(ERROR) << "Could not determine binded port, getsockname() failed";
+#if defined(OS_WIN)
+    closesocket(s);
+#elif defined(OS_POSIX)
+    close(s);
+#endif
+    return kInvalidSocket;
+  }
+  *port = base::NetToHost16(addr.sin_port);
+  return s;
+}
+
 void TCPListenSocket::Accept() {
   SocketDescriptor conn = AcceptSocket();
   if (conn == kInvalidSocket)
     return;
   scoped_refptr<TCPListenSocket> sock(
       new TCPListenSocket(conn, socket_delegate_));
   // It's up to the delegate to AddRef if it wants to keep it around.
 #if defined(OS_POSIX)
   sock->WatchSocket(WAITING_READ);
 #endif
   socket_delegate_->DidAccept(this, sock);
 }
 
 TCPListenSocketFactory::TCPListenSocketFactory(const string& ip, int port)
     : ip_(ip),
       port_(port) {
 }
 
 TCPListenSocketFactory::~TCPListenSocketFactory() {}
 
 scoped_refptr<StreamListenSocket> TCPListenSocketFactory::CreateAndListen(
     StreamListenSocket::Delegate* delegate) const {
   return TCPListenSocket::CreateAndListen(ip_, port_, delegate);
 }
 
 }  // namespace net