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/* $Id$ */
/**
* @file tcp.h Basic functions to receive and send TCP packets.
*/
#ifndef NETWORK_CORE_TCP_H
#define NETWORK_CORE_TCP_H
#ifdef ENABLE_NETWORK
#include "os_abstraction.h"
#include "address.h"
#include "core.h"
#include "packet.h"
/** Base socket handler for all TCP sockets */
class NetworkTCPSocketHandler : public NetworkSocketHandler {
private:
Packet *packet_queue; ///< Packets that are awaiting delivery
Packet *packet_recv; ///< Partially received packet
public:
bool writable; ///< Can we write to this socket?
virtual NetworkRecvStatus CloseConnection();
void Send_Packet(Packet *packet);
bool Send_Packets();
bool IsPacketQueueEmpty();
Packet *Recv_Packet(NetworkRecvStatus *status);
NetworkTCPSocketHandler(SOCKET s = INVALID_SOCKET);
~NetworkTCPSocketHandler();
};
/**
* "Helper" class for creating TCP connections in a non-blocking manner
*/
class TCPConnecter {
private:
class ThreadObject *thread; ///< Thread used to create the TCP connection
bool connected; ///< Whether we succeeded in making the connection
bool aborted; ///< Whether we bailed out (i.e. connection making failed)
bool killed; ///< Whether we got killed
SOCKET sock; ///< The socket we're connecting with
/** The actual connection function */
void Connect();
/**
* Entry point for the new threads.
* @param param the TCPConnecter instance to call Connect on.
*/
static void ThreadEntry(void *param);
protected:
/** Address we're connecting to */
NetworkAddress address;
public:
/**
* Create a new connecter for the given address
* @param address the (un)resolved address to connect to
*/
TCPConnecter(const NetworkAddress &address);
/** Silence the warnings */
virtual ~TCPConnecter() {}
/**
* Callback when the connection succeeded.
* @param s the socket that we opened
*/
virtual void OnConnect(SOCKET s) {}
/**
* Callback for when the connection attempt failed.
*/
virtual void OnFailure() {}
/**
* Check whether we need to call the callback, i.e. whether we
* have connected or aborted and call the appropriate callback
* for that. It's done this way to ease on the locking that
* would otherwise be needed everywhere.
*/
static void CheckCallbacks();
/** Kill all connection attempts. */
static void KillAll();
};
#endif /* ENABLE_NETWORK */
#endif /* NETWORK_CORE_TCP_H */
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