Extend debugger agent protocol with a connect message

src/debug-agent.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 24 matching lines @@
 
 
 // Forward decelrations.
 class DebuggerAgentSession;
 
 
 // Debugger agent which starts a socket listener on the debugger port and
 // handles connection from a remote debugger.
 class DebuggerAgent: public Thread {
  public:
-  explicit DebuggerAgent(int port)
-      : port_(port), server_(OS::CreateSocket()), terminate_(false),
+  explicit DebuggerAgent(const char* name, int port)
+      : port_(port), name_(StrDup(name)),
+        server_(OS::CreateSocket()), terminate_(false),
         session_access_(OS::CreateMutex()), session_(NULL),
         terminate_now_(OS::CreateSemaphore(0)) {}
   ~DebuggerAgent() { delete server_; }
 
   void Shutdown();
 
  private:
   void Run();
   void CreateSession(Socket* socket);
   void DebuggerMessage(const uint16_t* message, int length);
   void CloseSession();
   void OnSessionClosed(DebuggerAgentSession* session);
 
+  SmartPointer<const char> name_;  // Name of the embedding application.
   int port_;  // Port to use for the agent.
   Socket* server_;  // Server socket for listen/accept.
   bool terminate_;  // Termination flag.
   Mutex* session_access_;  // Mutex guarging access to session_.
   DebuggerAgentSession* session_;  // Current active session if any.
   Semaphore* terminate_now_;  // Semaphore to signal termination.
 
   friend class DebuggerAgentSession;
   friend void DebuggerAgentMessageHandler(const uint16_t* message, int length,
                                           void *data);
@@ skipping 24 matching lines @@
 };
 
 
 // Utility methods factored out to be used by the D8 shell as well.
 class DebuggerAgentUtil {
  public:
   static const char* kContentLength;
   static int kContentLengthSize;
 
   static SmartPointer<char> ReceiveMessage(const Socket* conn);
+  static bool SendConnectMessage(const Socket* conn,
+                                 const char* embedding_host);
   static bool SendMessage(const Socket* conn, const Vector<uint16_t> message);
   static bool SendMessage(const Socket* conn,
                           const v8::Handle<v8::String> message);
   static int ReceiveAll(const Socket* conn, char* data, int len);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_V8_DEBUG_AGENT_H_