1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef IPC_IPC_LISTENER_H_ 6 #define IPC_IPC_LISTENER_H_ 7 8 #include <stdint.h> 9 10 #include <string> 11 12 #include "build/build_config.h" 13 #include "ipc/ipc_export.h" 14 #include "mojo/public/cpp/bindings/scoped_interface_endpoint_handle.h" 15 16 namespace IPC { 17 18 class Message; 19 20 // Implemented by consumers of a Channel to receive messages. 21 class IPC_EXPORT Listener { 22 public: 23 // Called when a message is received. Returns true iff the message was 24 // handled. 25 virtual bool OnMessageReceived(const Message& message) = 0; 26 27 // Called when the channel is connected and we have received the internal 28 // Hello message from the peer. 29 virtual void OnChannelConnected(int32_t peer_pid) {} 30 31 // Called when an error is detected that causes the channel to close. 32 // This method is not called when a channel is closed normally. 33 virtual void OnChannelError() {} 34 35 // Called when a message's deserialization failed. 36 virtual void OnBadMessageReceived(const Message& message) {} 37 38 // Called when an associated interface request is received on a Channel and 39 // the Channel has no registered handler for it. 40 virtual void OnAssociatedInterfaceRequest( 41 const std::string& interface_name, 42 mojo::ScopedInterfaceEndpointHandle handle) {} 43 44 #if defined(OS_POSIX) 45 // Called on the server side when a channel that listens for connections 46 // denies an attempt to connect. 47 virtual void OnChannelDenied() {} 48 49 // Called on the server side when a channel that listens for connections 50 // has an error that causes the listening channel to close. 51 virtual void OnChannelListenError() {} 52 #endif // OS_POSIX 53 54 protected: 55 virtual ~Listener() {} 56 }; 57 58 } // namespace IPC 59 60 #endif // IPC_IPC_LISTENER_H_ 61
