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/******************************************************************
* $Id: nanohttp-socket.h,v 1.31 2006/11/23 15:27:33 m0gg Exp $
*
* CSOAP Project: A http client/server library in C
* Copyright (C) 2003 Ferhat Ayaz
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Email: ayaz@jprogrammer.net
******************************************************************/
#ifndef __nanohttp_socket_h
#define __nanohttp_socket_h
#define HSOCKET_FREE -1
/*
Socket definition
*/
struct hsocket_t
{
#ifdef WIN32
SOCKET sock;
#else
int sock;
#endif
struct sockaddr_in addr;
size_t bytes_transmitted;
size_t bytes_received;
void *ssl;
};
#ifdef __cplusplus
extern "C"
{
#endif
/**
*
* Initializes the socket modul. This should be called only once for an
* application.
*
* @returns This function should always return H_OK.
*
*/
extern herror_t hsocket_module_init(int argc, char **argv);
/**
*
* Destroys the socket modul. This should be called after finishing an
* application.
*
*/
extern void hsocket_module_destroy(void);
/**
*
* Initializes a given socket object. This function (or hsokcet_init_ssl) should
* be called for every socket before using it.
*
* @param sock the destination socket to initialize.
*
* @returns This function should always return H_OK.
*
* @see hsocket_init_ssl
*
*/
extern herror_t hsocket_init(struct hsocket_t * sock);
/**
*
* Destroys and releases a given socket.
*
* @param sock the socket to destroy
*
*/
extern void hsocket_free(struct hsocket_t * sock);
/**
*
* Connects to a given host. The hostname can be an IP number or a humen
* readable hostname.
*
* @param sock the destonation socket object to use
* @param host hostname
* @param port port number to connect to
* @param ssl whether to open a SSL connection
*
* @returns H_OK if success. One of the followings if fails:<P>
* - HSOCKET_ERROR_CREATE
* - HSOCKET_ERROR_GET_HOSTNAME
* - HSOCKET_ERROR_CONNECT
*
*/
extern herror_t hsocket_open(struct hsocket_t *sock, const char *host, int port, int ssl);
/**
*
* Close a socket connection.
*
* @param sock the socket to close
*
*/
extern void hsocket_close(struct hsocket_t *sock);
/**
*
* Binds a socket to a given port number. After bind you can call
* hsocket_listen() to listen to the port.
*
* @param sock socket to use.
* @param port port number to bind to
*
* @returns H_OK if success. One of the followings if fails:<P>
* - HSOCKET_ERROR_CREATE
* - HSOCKET_ERROR_BIND
*
* @see hsocket_listen
*
*/
extern herror_t hsocket_bind(struct hsocket_t *sock, unsigned short port);
/**
*
* Set the socket to the listen mode. You must bind the socket to a port with
* hsocket_bind() before you can listen to the port.
*
* @param sock the socket to use
*
* @returns H_OK if success. One of the followings if fails:<P>
* - HSOCKET_ERROR_NOT_INITIALIZED
* - HSOCKET_ERROR_LISTEN
*/
extern herror_t hsocket_listen(struct hsocket_t *sock);
/**
*
* Accepts an incoming socket request. Note that this function
* will not return until a socket connection is ready.
*
* @param sock the socket which listents to a port
* @param dest the destination socket which will be created
*
* @returns H_OK if success. One of the followings if fails:<P>
* - HSOCKET_ERROR_NOT_INITIALIZED
* - HSOCKET_ERROR_ACCEPT
*/
extern herror_t hsocket_accept(struct hsocket_t *sock, struct hsocket_t *dest);
/**
*
* Sends data throught the socket.
*
* @param sock the socket to use to send the data
* @param bytes bytes to send
* @param size size of memory to sent pointed by bytes.
*
* @returns H_OK if success. One of the followings if fails:<P>
* - HSOCKET_ERROR_NOT_INITIALIZED
* - HSOCKET_ERROR_SEND
*/
extern herror_t hsocket_nsend(struct hsocket_t *sock, const unsigned char *bytes, int size);
/**
*
* Sends a string throught the socket
*
* @param sock the socket to use to send the data
* @param str the null terminated string to sent
*
* @returns H_OK if success. One of the followings if fails:<P>
* - HSOCKET_ERROR_NOT_INITIALIZED
* - HSOCKET_ERROR_SEND
*
*/
extern herror_t hsocket_send(struct hsocket_t *sock, const char *str);
extern int hsocket_select_read(int sock, char *buf, size_t len);
/**
*
* Reads data from the socket.
*
* @param sock the socket to read data from
* @param buffer the buffer to use to save the readed bytes
* @param size the maximum size of bytes to read
* @param force if force is 1 then hsocket_read() will wait until maximum size
* of bytes (size parameter) was readed. Otherwise this function will not
* wait and will return with the bytes quequed on the socket.
*
* @returns This function will return -1 if an read error was occured. Otherwise
* the return value is the size of bytes readed from the socket.
*
*/
extern herror_t hsocket_read(struct hsocket_t * sock, unsigned char *buffer, int size, int force, int *readed);
#ifdef __cplusplus
}
#endif
#endif
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