AsyncTcpConnection.h

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#ifndef ASYNC_TCP_CONNECTION_INCLUDED
#define ASYNC_TCP_CONNECTION_INCLUDED


/****************************************************************************
 *
 * System Includes
 *
 ****************************************************************************/

#include <sigc++/signal_system.h>

#include <string>


/****************************************************************************
 *
 * Project Includes
 *
 ****************************************************************************/

#include <AsyncIpAddress.h>


/****************************************************************************
 *
 * Local Includes
 *
 ****************************************************************************/



/****************************************************************************
 *
 * Forward declarations
 *
 ****************************************************************************/



/****************************************************************************
 *
 * Namespace
 *
 ****************************************************************************/

namespace Async
{

/****************************************************************************
 *
 * Forward declarations of classes inside of the declared namespace
 *
 ****************************************************************************/

class FdWatch;
class IpAddress;


/****************************************************************************
 *
 * Defines & typedefs
 *
 ****************************************************************************/



/****************************************************************************
 *
 * Exported Global Variables
 *
 ****************************************************************************/



/****************************************************************************
 *
 * Class definitions
 *
 ****************************************************************************/

class TcpConnection : public SigC::Object
{
  public:
    typedef enum
    { 
      DR_HOST_NOT_FOUND,      
      DR_REMOTE_DISCONNECTED, 
      DR_SYSTEM_ERROR,        
      DR_RECV_BUFFER_OVERFLOW 
    } DisconnectReason;
    
    static const int DEFAULT_RECV_BUF_LEN = 1024;
    
    explicit TcpConnection(size_t recv_buf_len = DEFAULT_RECV_BUF_LEN);
    
    TcpConnection(int sock, const IpAddress& remote_addr,
                  unsigned short remote_port,
                  size_t recv_buf_len = DEFAULT_RECV_BUF_LEN);
    
    ~TcpConnection(void);
    
    void disconnect(void);
    
    int write(const void *buf, int count);
    
    const IpAddress& remoteHost(void) const { return remote_addr; }
    
    unsigned short remotePort(void) const { return remote_port; }
    
    SigC::Signal2<void, TcpConnection *, DisconnectReason> disconnected;
    
    SigC::Signal3<int, TcpConnection *, void *, int> dataReceived;
    
    SigC::Signal1<void, bool> sendBufferFull;

        
  protected:
    void setSocket(int sock);
    
    void setRemoteAddr(const IpAddress& remote_addr);
    
    void setRemotePort(unsigned short remote_port);
    
    int socket(void) const { return sock; }
    
    
  private:
    IpAddress       remote_addr;
    unsigned short  remote_port;
    size_t          recv_buf_len;
    int             sock;
    FdWatch *       rd_watch;
    FdWatch *       wr_watch;
    char *          recv_buf;
    size_t          recv_buf_cnt;
    
    void recvHandler(FdWatch *watch);
    void writeHandler(FdWatch *watch);

};  /* class TcpConnection */


} /* namespace */

#endif /* ASYNC_TCP_CONNECTION_INCLUDED */



/*
 * This file has not been truncated
 */

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