ibrcommon/ibrcommon/net/tcpstream.h

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/*
 * tcpstream.h
 *
 *  Created on: 29.07.2009
 *      Author: morgenro
 */

#ifndef IBRCOMMON_TCPSTREAM_H_
#define IBRCOMMON_TCPSTREAM_H_

#include "ibrcommon/Exceptions.h"
#include <streambuf>
#include <sys/types.h>
#include <sys/socket.h>
#include <iostream>

namespace ibrcommon
{
        class ConnectionClosedException : public Exception
        {
        public:
                ConnectionClosedException(string what = "The connection has been closed.") throw() : Exception(what)
                {
                };
        };

        class SocketException : public Exception
        {
        public:
                SocketException(string error) : Exception(error)
                {};
        };

        class tcpstream : public std::basic_streambuf<char, std::char_traits<char> >, public std::iostream
        {
        public:
                enum stream_state {
                        TCPSTREAM_CONNECTED = 0,
                        TCPSTREAM_HALF_CLOSED = 1,
                        TCPSTREAM_CLOSED = 2
                };

                enum stream_error {
                        ERROR_NONE = 0,
                        ERROR_EPIPE = 1,
                        ERROR_CLOSED = 2,
                        ERROR_WRITE = 3,
                        ERROR_READ = 4,
                        ERROR_RESET = 5
                };

                // The size of the input and output buffers.
                static const size_t BUFF_SIZE = 2048;

                tcpstream(int socket = 0);
                virtual ~tcpstream();

                string getAddress() const;
                int getPort() const;

                void close();

                void done();

                stream_error errmsg;

                void enableKeepalive();

        protected:
                virtual int sync();
                virtual int overflow(int = std::char_traits<char>::eof());
                virtual int underflow();

                int _socket;

        private:
                tcpstream(const tcpstream &s)
                 : std::iostream(this), _socket(s._socket), _state(s._state) {};

                // Input buffer
                char *in_buf_;
                // Output buffer
                char *out_buf_;

                stream_state _state;
        };
}

#endif /* TCPSTREAM_H_ */

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