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

remoting/host/desktop_session_agent.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 "remoting/host/desktop_session_agent.h"
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "ipc/ipc_message.h"
@@ skipping 85 matching lines @@
       IPC_MESSAGE_UNHANDLED(handled = false)
     IPC_END_MESSAGE_MAP()
   } else {
     IPC_BEGIN_MESSAGE_MAP(DesktopSessionAgent, message)
       IPC_MESSAGE_HANDLER(ChromotingNetworkDesktopMsg_StartSessionAgent,
                           OnStartSessionAgent)
       IPC_MESSAGE_UNHANDLED(handled = false)
     IPC_END_MESSAGE_MAP()
   }
 
-  // Close the channel if the received message wasn't expected.
-  if (!handled) {
-    LOG(ERROR) << "An unexpected IPC message received: type=" << message.type();
-    OnChannelError();
-  }
-
+  CHECK(handled) << "Received unexpected IPC type: " << message.type();
   return handled;
 }
 
 void DesktopSessionAgent::OnChannelConnected(int32 peer_pid) {
   DCHECK(caller_task_runner()->BelongsToCurrentThread());
 
   VLOG(1) << "IPC: desktop <- network (" << peer_pid << ")";
 
   CloseDesktopPipeHandle();
 }
@@ skipping 409 matching lines @@
     base::ClosePlatformFile(desktop_pipe_.fd);
 #else  // !defined(OS_POSIX)
 #error Unsupported platform.
 #endif  // !defined(OS_POSIX)
 
     desktop_pipe_ = IPC::InvalidPlatformFileForTransit();
   }
 }
 
 }  // namespace remoting