103 lines
3.2 KiB
C
103 lines
3.2 KiB
C
/**
|
|
* \file net.h
|
|
*/
|
|
#ifndef POLARSSL_NET_H
|
|
#define POLARSSL_NET_H
|
|
|
|
#define POLARSSL_ERR_NET_UNKNOWN_HOST -0x0F00
|
|
#define POLARSSL_ERR_NET_SOCKET_FAILED -0x0F10
|
|
#define POLARSSL_ERR_NET_CONNECT_FAILED -0x0F20
|
|
#define POLARSSL_ERR_NET_BIND_FAILED -0x0F30
|
|
#define POLARSSL_ERR_NET_LISTEN_FAILED -0x0F40
|
|
#define POLARSSL_ERR_NET_ACCEPT_FAILED -0x0F50
|
|
#define POLARSSL_ERR_NET_RECV_FAILED -0x0F60
|
|
#define POLARSSL_ERR_NET_SEND_FAILED -0x0F70
|
|
#define POLARSSL_ERR_NET_CONN_RESET -0x0F80
|
|
#define POLARSSL_ERR_NET_TRY_AGAIN -0x0F90
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* \brief Initiate a TCP connection with host:port
|
|
*
|
|
* \return 0 if successful, or one of:
|
|
* POLARSSL_ERR_NET_SOCKET_FAILED,
|
|
* POLARSSL_ERR_NET_UNKNOWN_HOST,
|
|
* POLARSSL_ERR_NET_CONNECT_FAILED
|
|
*/
|
|
int net_connect( int *fd, char *host, int port );
|
|
|
|
/**
|
|
* \brief Create a listening socket on bind_ip:port.
|
|
* If bind_ip == NULL, all interfaces are binded.
|
|
*
|
|
* \return 0 if successful, or one of:
|
|
* POLARSSL_ERR_NET_SOCKET_FAILED,
|
|
* POLARSSL_ERR_NET_BIND_FAILED,
|
|
* POLARSSL_ERR_NET_LISTEN_FAILED
|
|
*/
|
|
int net_bind( int *fd, char *bind_ip, int port );
|
|
|
|
/**
|
|
* \brief Accept a connection from a remote client
|
|
*
|
|
* \return 0 if successful, POLARSSL_ERR_NET_ACCEPT_FAILED, or
|
|
* POLARSSL_ERR_NET_WOULD_BLOCK is bind_fd was set to
|
|
* non-blocking and accept() is blocking.
|
|
*/
|
|
int net_accept( int bind_fd, int *client_fd, void *client_ip );
|
|
|
|
/**
|
|
* \brief Set the socket blocking
|
|
*
|
|
* \return 0 if successful, or a non-zero error code
|
|
*/
|
|
int net_set_block( int fd );
|
|
|
|
/**
|
|
* \brief Set the socket non-blocking
|
|
*
|
|
* \return 0 if successful, or a non-zero error code
|
|
*/
|
|
int net_set_nonblock( int fd );
|
|
|
|
/**
|
|
* \brief Portable usleep helper
|
|
*
|
|
* \note Real amount of time slept will not be less than
|
|
* select()'s timeout granularity (typically, 10ms).
|
|
*/
|
|
void net_usleep( unsigned long usec );
|
|
|
|
/**
|
|
* \brief Read at most 'len' characters. len is updated to
|
|
* reflect the actual number of characters read.
|
|
*
|
|
* \return This function returns the number of bytes received,
|
|
* or a negative error code; POLARSSL_ERR_NET_TRY_AGAIN
|
|
* indicates read() is blocking.
|
|
*/
|
|
int net_recv( void *ctx, unsigned char *buf, int len );
|
|
|
|
/**
|
|
* \brief Write at most 'len' characters. len is updated to
|
|
* reflect the number of characters _not_ written.
|
|
*
|
|
* \return This function returns the number of bytes sent,
|
|
* or a negative error code; POLARSSL_ERR_NET_TRY_AGAIN
|
|
* indicates write() is blocking.
|
|
*/
|
|
int net_send( void *ctx, unsigned char *buf, int len );
|
|
|
|
/**
|
|
* \brief Gracefully shutdown the connection
|
|
*/
|
|
void net_close( int fd );
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* net.h */
|