121 lines
4.1 KiB
C
121 lines
4.1 KiB
C
/**
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* \file net.h
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*
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* Based on XySSL: Copyright (C) 2006-2008 Christophe Devine
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*
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* Copyright (C) 2009 Paul Bakker <polarssl_maintainer at polarssl dot org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef POLARSSL_NET_H
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#define POLARSSL_NET_H
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#define POLARSSL_ERR_NET_UNKNOWN_HOST 0x0F00
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#define POLARSSL_ERR_NET_SOCKET_FAILED 0x0F10
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#define POLARSSL_ERR_NET_CONNECT_FAILED 0x0F20
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#define POLARSSL_ERR_NET_BIND_FAILED 0x0F30
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#define POLARSSL_ERR_NET_LISTEN_FAILED 0x0F40
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#define POLARSSL_ERR_NET_ACCEPT_FAILED 0x0F50
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#define POLARSSL_ERR_NET_RECV_FAILED 0x0F60
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#define POLARSSL_ERR_NET_SEND_FAILED 0x0F70
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#define POLARSSL_ERR_NET_CONN_RESET 0x0F80
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#define POLARSSL_ERR_NET_TRY_AGAIN 0x0F90
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \brief Initiate a TCP connection with host:port
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*
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* \return 0 if successful, or one of:
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* POLARSSL_ERR_NET_SOCKET_FAILED,
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* POLARSSL_ERR_NET_UNKNOWN_HOST,
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* POLARSSL_ERR_NET_CONNECT_FAILED
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*/
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int net_connect( int *fd, char *host, int port );
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/**
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* \brief Create a listening socket on bind_ip:port.
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* If bind_ip == NULL, all interfaces are binded.
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*
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* \return 0 if successful, or one of:
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* POLARSSL_ERR_NET_SOCKET_FAILED,
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* POLARSSL_ERR_NET_BIND_FAILED,
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* POLARSSL_ERR_NET_LISTEN_FAILED
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*/
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int net_bind( int *fd, char *bind_ip, int port );
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/**
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* \brief Accept a connection from a remote client
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*
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* \return 0 if successful, POLARSSL_ERR_NET_ACCEPT_FAILED, or
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* POLARSSL_ERR_NET_WOULD_BLOCK is bind_fd was set to
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* non-blocking and accept() is blocking.
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*/
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int net_accept( int bind_fd, int *client_fd, void *client_ip );
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/**
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* \brief Set the socket blocking
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*
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* \return 0 if successful, or a non-zero error code
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*/
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int net_set_block( int fd );
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/**
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* \brief Set the socket non-blocking
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*
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* \return 0 if successful, or a non-zero error code
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*/
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int net_set_nonblock( int fd );
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/**
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* \brief Portable usleep helper
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*
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* \note Real amount of time slept will not be less than
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* select()'s timeout granularity (typically, 10ms).
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*/
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void net_usleep( unsigned long usec );
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/**
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* \brief Read at most 'len' characters. len is updated to
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* reflect the actual number of characters read.
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*
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* \return This function returns the number of bytes received,
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* or a negative error code; POLARSSL_ERR_NET_TRY_AGAIN
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* indicates read() is blocking.
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*/
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int net_recv( void *ctx, unsigned char *buf, int len );
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/**
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* \brief Write at most 'len' characters. len is updated to
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* reflect the number of characters _not_ written.
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*
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* \return This function returns the number of bytes sent,
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* or a negative error code; POLARSSL_ERR_NET_TRY_AGAIN
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* indicates write() is blocking.
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*/
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int net_send( void *ctx, unsigned char *buf, int len );
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/**
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* \brief Gracefully shutdown the connection
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*/
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void net_close( int fd );
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#ifdef __cplusplus
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}
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#endif
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#endif /* net.h */
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