/*

 * nonblocksockets.h

 *

 *  Created on: 31.05.2012

 *      Author: simmax

 */

#ifndef NONBLOCKSOCKETS_H_

#define NONBLOCKSOCKETS_H_

#include <SDL_net.h>

#include <stdbool.h>

typedef struct {

	TCPsocket sock;

	SDLNet_SocketSet sockset;

} _NonBlockSocket;

typedef _NonBlockSocket *NonBlockSocket;

/**

 * Close the indicated socket, free its memory and set it to NULL.

 * If the socket is already NULL, nothing happens.

 */

void flib_nbsocket_close(NonBlockSocket *socket);

/**

 * Try to accept a connection from a listening socket.

 * if localOnly is true, this will only accept connections which came from 127.0.0.1

 * Returns NULL if nothing can be accepted.

 */

NonBlockSocket flib_nbsocket_accept(TCPsocket listensocket, bool localOnly);

/**

 * Attempt to receive up to maxlen bytes from the socket, but does not

 * block if nothing is available.

 * Returns the ammount of data received, 0 if there was nothing to receive,

 * or a negative number if the connection was closed or an error occurred.

 */

int flib_nbsocket_recv(NonBlockSocket sock, void *data, int maxlen);

/**

 * We can't do a nonblocking send over SDL_net, so this function just forwards

 * to SDLNet_TCP_Send for convenience, which blocks until all data is sent or an

 * error occurs. The ammount of data actually sent is returned, negative value on error.

 */

static inline int flib_nbsocket_blocksend(NonBlockSocket sock, void *data, int len) {

	return SDLNet_TCP_Send(sock->sock, data, len);

}

#endif /* NONBLOCKSOCKETS_H_ */