10017
+ − 1 /*
+ − 2 * Hedgewars, a free turn based strategy game
+ − 3 * Copyright (C) 2012 Simeon Maxein <smaxein@googlemail.com>
+ − 4 *
+ − 5 * This program is free software; you can redistribute it and/or
+ − 6 * modify it under the terms of the GNU General Public License
+ − 7 * as published by the Free Software Foundation; either version 2
+ − 8 * of the License, or (at your option) any later version.
+ − 9 *
+ − 10 * This program is distributed in the hope that it will be useful,
+ − 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ − 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ − 13 * GNU General Public License for more details.
+ − 14 *
+ − 15 * You should have received a copy of the GNU General Public License
+ − 16 * along with this program; if not, write to the Free Software
+ − 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ − 18 */
+ − 19
+ − 20 /*
+ − 21 * Sockets for TCP networking.
+ − 22 *
+ − 23 * This layer offers some functionality over what SDL_net offers directly: listening
+ − 24 * sockets (called acceptors here) can be bound to port 0, which will make them listen
+ − 25 * on a random unused port, if one can be found. To support this feature, you can also
+ − 26 * query the local port that an acceptor is listening on.
+ − 27 *
+ − 28 * Further, we support nonblocking reads here.
+ − 29 */
+ − 30
+ − 31 #ifndef SOCKET_H_
+ − 32 #define SOCKET_H_
+ − 33
+ − 34 #include <stdbool.h>
+ − 35 #include <stdint.h>
+ − 36
+ − 37 typedef struct _flib_tcpsocket flib_tcpsocket;
+ − 38 typedef struct _flib_acceptor flib_acceptor;
+ − 39
+ − 40 /**
+ − 41 * Create a new acceptor which will listen for incoming TCP connections
+ − 42 * on the given port. If port is 0, this will listen on a random
+ − 43 * unused port which can then be queried with flib_acceptor_listenport.
+ − 44 *
+ − 45 * Returns NULL on error.
+ − 46 */
+ − 47 flib_acceptor *flib_acceptor_create(uint16_t port);
+ − 48
+ − 49 /**
+ − 50 * Return the port on which the acceptor is listening.
+ − 51 */
+ − 52 uint16_t flib_acceptor_listenport(flib_acceptor *acceptor);
+ − 53
+ − 54 /**
+ − 55 * Close the acceptor and free its memory. NULL-safe.
+ − 56 */
+ − 57 void flib_acceptor_close(flib_acceptor *acceptor);
+ − 58
+ − 59 /**
+ − 60 * Try to accept a connection from an acceptor (listening socket).
+ − 61 * if localOnly is true, this will only accept connections which came from 127.0.0.1
+ − 62 * Returns NULL if nothing can be accepted.
+ − 63 */
+ − 64 flib_tcpsocket *flib_socket_accept(flib_acceptor *acceptor, bool localOnly);
+ − 65
+ − 66 /**
+ − 67 * Try to connect to the server at the given address.
+ − 68 */
+ − 69 flib_tcpsocket *flib_socket_connect(const char *host, uint16_t port);
+ − 70
+ − 71 /**
+ − 72 * Close the socket and free its memory. NULL-safe.
+ − 73 */
+ − 74 void flib_socket_close(flib_tcpsocket *socket);
+ − 75
+ − 76 /**
+ − 77 * Attempt to receive up to maxlen bytes from the socket, but does not
+ − 78 * block if nothing is available.
+ − 79 * Returns the ammount of data received, 0 if there was nothing to receive,
+ − 80 * or a negative number if the connection was closed or an error occurred.
+ − 81 */
+ − 82 int flib_socket_nbrecv(flib_tcpsocket *sock, void *data, int maxlen);
+ − 83
+ − 84 /**
+ − 85 * Blocking send all the data in the data buffer. Returns the actual ammount
+ − 86 * of data sent, or a negative value on error. If the value returned here
+ − 87 * is less than len, either the connection closed or an error occurred.
+ − 88 */
+ − 89 int flib_socket_send(flib_tcpsocket *sock, const void *data, int len);
+ − 90
+ − 91 #endif /* SOCKET_H_ */