Crash the network or desktop process when an unknown IPC message is received.

remoting/host/desktop_process.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.
 //
 // This file implements the Windows service controlling Me2Me host processes
 // running within user sessions.
 
 #include "remoting/host/desktop_process.h"
 
 #include "base/bind.h"
@@ skipping 43 matching lines @@
 }
 
 bool DesktopProcess::OnMessageReceived(const IPC::Message& message) {
   DCHECK(caller_task_runner_->BelongsToCurrentThread());
 
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(DesktopProcess, message)
     IPC_MESSAGE_HANDLER(ChromotingDaemonDesktopMsg_Crash, OnCrash)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
+
+  CHECK(handled) << "Received unexpected IPC type: " << message.type();
   return handled;
 }
 
 void DesktopProcess::OnChannelConnected(int32 peer_pid) {
   DCHECK(caller_task_runner_->BelongsToCurrentThread());
 
   VLOG(1) << "IPC: desktop <- daemon (" << peer_pid << ")";
 }
 
 void DesktopProcess::OnChannelError() {
@@ skipping 71 matching lines @@
 }
 
 void DesktopProcess::OnCrash(const std::string& function_name,
                              const std::string& file_name,
                              const int& line_number) {
   // The daemon requested us to crash the process.
   CHECK(false);
 }
 
 } // namespace remoting