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// Copyright 2008 Google Inc. All Rights Reserved.
//
// MacAsyncSocket is a kind of AsyncSocket. It only creates sockets
// of the TCP type, and does not (yet) support listen and accept. It works
// asynchronously, which means that users of this socket should connect to
// the various events declared in asyncsocket.h to receive notifications about
// this socket.
#ifndef TALK_BASE_MACASYNCSOCKET_H__
#define TALK_BASE_MACASYNCSOCKET_H__
#include <CoreFoundation/CoreFoundation.h>
#include "talk/base/asyncsocket.h"
#include "talk/base/nethelpers.h"
namespace talk_base {
class MacBaseSocketServer;
class MacAsyncSocket : public AsyncSocket, public sigslot::has_slots<> {
public:
MacAsyncSocket(MacBaseSocketServer* ss, int family);
virtual ~MacAsyncSocket();
bool valid() const { return source_ != NULL; }
// Socket interface
virtual SocketAddress GetLocalAddress() const;
virtual SocketAddress GetRemoteAddress() const;
virtual int Bind(const SocketAddress& addr);
virtual int Connect(const SocketAddress& addr);
virtual int Send(const void* buffer, size_t length);
virtual int SendTo(const void* buffer, size_t length,
const SocketAddress& addr);
virtual int Recv(void* buffer, size_t length);
virtual int RecvFrom(void* buffer, size_t length, SocketAddress* out_addr);
virtual int Listen(int backlog);
virtual MacAsyncSocket* Accept(SocketAddress* out_addr);
virtual int Close();
virtual int GetError() const;
virtual void SetError(int error);
virtual ConnState GetState() const;
virtual int EstimateMTU(uint16* mtu);
virtual int GetOption(Option opt, int* value);
virtual int SetOption(Option opt, int value);
// For the MacBaseSocketServer to disable callbacks when process_io is false.
void EnableCallbacks();
void DisableCallbacks();
protected:
void OnResolveResult(SignalThread* thread);
int DoConnect(const SocketAddress& addr);
private:
// Creates an async socket from an existing bsd socket
MacAsyncSocket(MacBaseSocketServer* ss, int family, int native_socket);
// Attaches the socket to the CFRunloop and sets the wrapped bsd socket
// to async mode
void Initialize(int family);
// Translate the SocketAddress into a CFDataRef to pass to CF socket
// functions. Caller must call CFRelease on the result when done.
static CFDataRef CopyCFAddress(const SocketAddress& address);
// Callback for the underlying CFSocketRef.
static void MacAsyncSocketCallBack(CFSocketRef s,
CFSocketCallBackType callbackType,
CFDataRef address,
const void* data,
void* info);
MacBaseSocketServer* ss_;
CFSocketRef socket_;
int native_socket_;
CFRunLoopSourceRef source_;
int current_callbacks_;
bool disabled_;
int error_;
ConnState state_;
AsyncResolver* resolver_;
DISALLOW_EVIL_CONSTRUCTORS(MacAsyncSocket);
};
} // namespace talk_base
#endif // TALK_BASE_MACASYNCSOCKET_H__
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