3 /* transport - low level communication (send/receive bunches of bytes) */
4 /* module's public interface exported to end user. */
6 /* Copyright (c) 2004 Martin Quinson. All rights reserved. */
8 /* This program is free software; you can redistribute it and/or modify it
9 * under the terms of the license (GNU LGPL) which comes with this package. */
11 #ifndef GRAS_TRANSPORT_H
12 #define GRAS_TRANSPORT_H
14 /** \addtogroup GRAS_sock
15 * \brief Socket handling (Communication facility).
18 /** \name Socket creation functions
22 /** \brief Opaque type describing a socket */
23 typedef struct s_gras_socket *gras_socket_t;
25 /** \brief Simply create a client socket (to speak to a remote host) */
26 gras_socket_t gras_socket_client(const char *host, unsigned short port);
27 /** \brief Simply create a server socket (to ear from remote hosts speaking to you) */
28 gras_socket_t gras_socket_server(unsigned short port);
29 /** \brief Close socket */
30 void gras_socket_close(gras_socket_t sd);
32 /** \brief Create a client socket, full interface to all relevant settings */
33 gras_socket_t gras_socket_client_ext(const char *host,
35 unsigned long int bufSize,
37 /** \brief Create a server socket, full interface to all relevant settings */
38 gras_socket_t gras_socket_server_ext(unsigned short port,
39 unsigned long int bufSize,
42 /** \name Retrieving data about sockets and peers
45 * Who are you talking to?
49 /** Get the port number on which this socket is connected on my side */
50 int gras_socket_my_port (gras_socket_t sock);
51 /** Get the port number on which this socket is connected on remote side */
52 int gras_socket_peer_port(gras_socket_t sock);
53 /** Get the host name of the remote side */
54 char *gras_socket_peer_name(gras_socket_t sock);
57 /** \name Using measurement sockets
60 * You may want to use sockets not to exchange valuable data (in messages),
61 * but to conduct some bandwidth measurements and related experiments. If so, try those measurement sockets.
63 * You can only use those functions on sockets openned with the "measurement" boolean set to true.
70 int gras_socket_is_meas(gras_socket_t sock);
71 void gras_socket_meas_send(gras_socket_t peer,
73 unsigned long int expSize,
74 unsigned long int msgSize);
75 void gras_socket_meas_recv(gras_socket_t peer,
77 unsigned long int expSize,
78 unsigned long int msgSize);
79 gras_socket_t gras_socket_meas_accept(gras_socket_t peer);
83 /** \name Using files as sockets
86 * For debugging purpose, it is possible to deal with files as if they were sockets.
87 * It can even be useful to store stuff in a portable manner, but writing messages to a file
90 * \bug Don't use '-' on windows. this file represents stdin or stdout, but I failed to deal with it on windows.
93 /* debuging functions */
94 gras_socket_t gras_socket_client_from_file(const char*path);
95 gras_socket_t gras_socket_server_from_file(const char*path);
99 #endif /* GRAS_TRANSPORT_H */