3 /* ping - ping/pong demo of GRAS features */
5 /* Copyright (c) 2003, 2004, 2005 Martin Quinson. All rights reserved. */
7 /* This program is free software; you can redistribute it and/or modify it
8 * under the terms of the license (GNU LGPL) which comes with this package. */
12 XBT_LOG_NEW_DEFAULT_CATEGORY(Ping,"Messages specific to this example");
14 /* **********************************************************************
16 * **********************************************************************/
18 static void register_messages(void) {
19 gras_msgtype_declare("ping", gras_datadesc_by_name("int"));
20 gras_msgtype_declare("pong", gras_datadesc_by_name("int"));
23 /* **********************************************************************
25 * **********************************************************************/
27 /* Global private data */
33 /* Function prototypes */
34 int server_cb_ping_handler(gras_socket_t expeditor,
36 int server (int argc,char *argv[]);
39 int server_cb_ping_handler(gras_socket_t expeditor,
43 int msg=*(int*)payload_data;
45 server_data_t *globals=(server_data_t*)gras_userdata_get();
47 globals->endcondition = 0;
48 INFO3("SERVER: >>>>>>>> Got message PING(%d) from %s:%d <<<<<<<<",
50 gras_socket_peer_name(expeditor), gras_socket_peer_port(expeditor));
53 errcode = gras_msg_send(expeditor, gras_msgtype_by_name("pong"), &msg);
55 if (errcode != no_error) {
56 ERROR1("SERVER: Unable answer with PONG: %s\n", xbt_error_name(errcode));
57 gras_socket_close(globals->sock);
61 INFO0("SERVER: >>>>>>>> Answed with PONG(4321) <<<<<<<<");
62 globals->endcondition = 1;
63 gras_socket_close(expeditor);
67 int server (int argc,char *argv[]) {
69 server_data_t *globals;
73 gras_init(&argc,argv, NULL);
74 globals=gras_userdata_new(server_data_t);
80 INFO1("Launch server (port=%d)", port);
82 if ((errcode=gras_socket_server(port,&(globals->sock)))) {
83 CRITICAL1("Error %s encountered while opening the server socket",
84 xbt_error_name(errcode));
90 gras_cb_register(gras_msgtype_by_name("ping"),&server_cb_ping_handler);
92 INFO1("SERVER: >>>>>>>> Listening on port %d <<<<<<<<",
93 gras_socket_my_port(globals->sock));
94 globals->endcondition=0;
96 errcode = gras_msg_handle(600.0);
97 if (errcode != no_error)
99 if (!globals->endcondition)
100 WARN0("An error occured, the endcondition was not set by the callback");
105 gras_socket_close(globals->sock);
108 INFO0("SERVER: Done.");
112 /* **********************************************************************
114 * **********************************************************************/
116 /* Function prototypes */
117 int client (int argc,char *argv[]);
119 int client(int argc,char *argv[]) {
121 gras_socket_t toserver; /* peer */
126 const char *host = "127.0.0.1";
129 gras_init(&argc, argv, NULL);
136 INFO2("Launch client (server on %s:%d)",host,port);
137 gras_os_sleep(1,0); /* Wait for the server startup */
138 if ((errcode=gras_socket_client(host,port,&toserver))) {
139 ERROR1("Client: Unable to connect to the server. Got %s",
140 xbt_error_name(errcode));
143 INFO2("Client: Connected to %s:%d.",host,port);
148 INFO2("Client: >>>>>>>> Connected to server which is on %s:%d <<<<<<<<",
149 gras_socket_peer_name(toserver),gras_socket_peer_port(toserver));
152 errcode = gras_msg_send(toserver, gras_msgtype_by_name("ping"), &ping);
153 if (errcode != no_error) {
154 fprintf(stderr, "Client: Unable send PING to server (%s)\n",
155 xbt_error_name(errcode));
156 gras_socket_close(toserver);
159 INFO3("Client: >>>>>>>> Message PING(%d) sent to %s:%d <<<<<<<<",
161 gras_socket_peer_name(toserver),gras_socket_peer_port(toserver));
163 if ((errcode=gras_msg_wait(6000,gras_msgtype_by_name("pong"),
165 ERROR1("Client: Why can't I get my PONG message like everyone else (%s)?",
166 xbt_error_name(errcode));
167 gras_socket_close(toserver);
171 INFO3("Client: >>>>>>>> Got PONG(%d) got from %s:%d <<<<<<<<",
173 gras_socket_peer_name(from),gras_socket_peer_port(from));
175 gras_socket_close(toserver);
177 INFO0("Client: Done.");