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/* Copyright (C) 2008 PrimeBase Technologies GmbH, Germany
*
* PrimeBase Media Stream for MySQL
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Original author: Paul McCullagh (H&G2JCtL)
* Continued development: Barry Leslie
*
* 2007-05-24
*
* CORE SYSTEM:
* Basic file I/O.
*
*/
#ifndef __CSSOCKET_H__
#define __CSSOCKET_H__
#include <stdio.h>
#include "CSDefs.h"
#include "CSPath.h"
#include "CSException.h"
#include "CSMemory.h"
#include "CSMutex.h"
class CSOutputStream;
class CSInputStream;
#define CS_SOCKET_ADDRESS_SIZE 300
/* This is only required if you do
* not use an output buffer stream!
*/
//#define CS_USE_OUTPUT_BUFFER
#ifdef CS_USE_OUTPUT_BUFFER
#ifdef DEBUG
#define CS_OUTPUT_BUFFER_SIZE 80
#define CS_MIN_WRITE_SIZE 40
#else
#define CS_OUTPUT_BUFFER_SIZE (4*1024)
#define CS_MIN_WRITE_SIZE (1500)
#endif
#endif
class CSSocket : public CSRefObject {
public:
CSSocket(): iHandle(-1), iHost(NULL), iService(NULL), iIdentity(NULL), iPort(0), iTimeout(0) {
#ifdef CS_USE_OUTPUT_BUFFER
iDataLen = 0;
#endif
}
virtual ~CSSocket() {
close();
}
void setTimeout(uint32_t milli_sec);
CSOutputStream *getOutputStream();
CSInputStream *getInputStream();
virtual void formatAddress(size_t size, char *address);
/*
* Publish a listener:
*/
virtual void publish(char *service, int default_port);
/*
* Accept a connection from a listening socket:
*/
virtual void open(CSSocket *listener);
/*
* Connect to a listening socket.
*/
virtual void open(char *address, int default_port);
/*
* Close the socket.
*/
virtual void close();
/*
* Read at least one byte from the socket.
* This function returns 0 on EOF.
* If the function returns at least
* one byte, then you must call the function
* again, there may be more data available.
*
* Note: Errors on the socket do not cause
* an exception!
*/
virtual size_t read(void *data, size_t size);
/*
* Returns -1 on EOF!
* Otherwize it returns a character value >= 0
* Just like read, error on the socket do
* not throw an exception.
*/
virtual int read();
/*
* Look at the next character in the file without
* taking from the input.
*/
virtual int peek();
/*
* Write the given number of bytes.
* Throws IOException if an error occurs.
*/
virtual void write(const void *data, size_t size);
/*
* Write a character to the file.
*/
virtual void write(char ch);
/*
* Flush the data written.
*/
virtual void flush();
virtual const char *identify();
static void initSockets();
static CSSocket *newSocket();
private:
void throwError(const char *func, const char *file, int line, char *address, int err);
void throwError(const char *func, const char *file, int line, int err);
void setNoDelay();
void setNonBlocking();
void setBlocking();
void openInternal();
void writeBlock(const void *data, size_t len);
int timeoutRead(CSThread *self, void *buffer, size_t length);
int iHandle;
char *iHost;
char *iService;
char *iIdentity;
int iPort;
uint32_t iTimeout;
#ifdef CS_USE_OUTPUT_BUFFER
char iOutputBuffer[CS_OUTPUT_BUFFER_SIZE];
size_t iDataLen;
#endif
};
#endif
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