xyssl_net.h
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/**
* \file net.h
*/
#ifndef XYSSL_NET_H
#define XYSSL_NET_H
#define XYSSL_ERR_NET_UNKNOWN_HOST -0x0F00
#define XYSSL_ERR_NET_SOCKET_FAILED -0x0F10
#define XYSSL_ERR_NET_CONNECT_FAILED -0x0F20
#define XYSSL_ERR_NET_BIND_FAILED -0x0F30
#define XYSSL_ERR_NET_LISTEN_FAILED -0x0F40
#define XYSSL_ERR_NET_ACCEPT_FAILED -0x0F50
#define XYSSL_ERR_NET_RECV_FAILED -0x0F60
#define XYSSL_ERR_NET_SEND_FAILED -0x0F70
#define XYSSL_ERR_NET_CONN_RESET -0x0F80
#define XYSSL_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:
* XYSSL_ERR_NET_SOCKET_FAILED,
* XYSSL_ERR_NET_UNKNOWN_HOST,
* XYSSL_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:
* XYSSL_ERR_NET_SOCKET_FAILED,
* XYSSL_ERR_NET_BIND_FAILED,
* XYSSL_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, XYSSL_ERR_NET_ACCEPT_FAILED, or
* XYSSL_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; XYSSL_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; XYSSL_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 */