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 #include "xbt/error.h"
16 /** \addtogroup GRAS_sock
17 * \brief Socket handling (Communication facility).
20 /** \name Socket creation functions
24 /** \brief Opaque type describing a socket */
25 typedef struct s_gras_socket *gras_socket_t;
27 /** \brief Simply create a client socket (to speak to a remote host) */
28 gras_socket_t gras_socket_client(const char *host, unsigned short port);
29 /** \brief Simply create a server socket (to ear from remote hosts speaking to you) */
30 gras_socket_t gras_socket_server(unsigned short port);
31 /** \brief Close socket */
32 void gras_socket_close(gras_socket_t sd);
34 /** \brief Create a client socket, full interface to all relevant settings */
35 gras_socket_t gras_socket_client_ext(const char *host,
37 unsigned long int bufSize,
39 /** \brief Create a server socket, full interface to all relevant settings */
40 gras_socket_t gras_socket_server_ext(unsigned short port,
41 unsigned long int bufSize,
44 /** \name Retrieving data about sockets and peers
47 * Who are you talking to?
51 /** Get the port number on which this socket is connected on my side */
52 int gras_socket_my_port (gras_socket_t sock);
53 /** Get the port number on which this socket is connected on remote side */
54 int gras_socket_peer_port(gras_socket_t sock);
55 /** Get the host name of the remote side */
56 char *gras_socket_peer_name(gras_socket_t sock);
59 /** \name Using measurement sockets
62 * You may want to use sockets not to exchange valuable data (in messages),
63 * but to conduct some bandwidth measurements and related experiments. If so, try those measurement sockets.
65 * You can only use those functions on sockets openned with the "measurement" boolean set to true.
72 int gras_socket_is_meas(gras_socket_t sock);
73 void gras_socket_meas_send(gras_socket_t peer,
75 unsigned long int expSize,
76 unsigned long int msgSize);
77 void gras_socket_meas_recv(gras_socket_t peer,
79 unsigned long int expSize,
80 unsigned long int msgSize);
81 gras_socket_t gras_socket_meas_accept(gras_socket_t peer);
85 /** \name Using files as sockets
88 * For debugging purpose, it is possible to deal with files as if they were sockets.
89 * It can even be useful to store stuff in a portable manner, but writing messages to a file
92 * \bug Don't use '-' on windows. this file represents stdin or stdout, but I failed to deal with it on windows.
95 /* debuging functions */
96 gras_socket_t gras_socket_client_from_file(const char*path);
97 gras_socket_t gras_socket_server_from_file(const char*path);
101 #endif /* GRAS_TRANSPORT_H */