3 /* ping - ping/pong demo of GRAS features */
5 /* Copyright (c) 2003, 2004 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. */
16 XBT_LOG_NEW_DEFAULT_CATEGORY(Ping,"Messages specific to this example");
18 /* **********************************************************************
20 * **********************************************************************/
26 /* Function prototypes */
27 void register_messages(void);
30 void register_messages(void) {
32 gras_msgtype_declare("ping", gras_datadesc_by_name("int"));
33 gras_msgtype_declare("pong", gras_datadesc_by_name("int"));
36 /* **********************************************************************
38 * **********************************************************************/
40 /* Global private data */
46 /* Function prototypes */
47 int server_cb_ping_handler(gras_socket_t expeditor,
49 int server (int argc,char *argv[]);
52 int server_cb_ping_handler(gras_socket_t expeditor,
56 int msg=*(int*)payload_data;
57 gras_msgtype_t *pong_t=NULL;
59 server_data_t *g=(server_data_t*)gras_userdata_get();
62 INFO3("SERVER: >>>>>>>> Got message PING(%d) from %s:%d <<<<<<<<",
64 gras_socket_peer_name(expeditor),
65 gras_socket_peer_port(expeditor));
68 errcode = gras_msg_send(expeditor, gras_msgtype_by_name("pong"), &msg);
70 if (errcode != no_error) {
71 ERROR1("SERVER: Unable answer with PONG: %s\n", xbt_error_name(errcode));
72 gras_socket_close(g->sock);
76 INFO0("SERVER: >>>>>>>> Answed with PONG(4321) <<<<<<<<");
78 gras_socket_close(expeditor);
82 int server (int argc,char *argv[]) {
85 gras_msgtype_t *ping_msg=NULL;
89 gras_init(&argc,argv, NULL);
90 g=gras_userdata_new(server_data_t);
96 INFO1("Launch server (port=%d)", port);
98 if ((errcode=gras_socket_server(port,&(g->sock)))) {
99 CRITICAL1("Error %s encountered while opening the server socket",
100 xbt_error_name(errcode));
106 gras_cb_register(gras_msgtype_by_name("ping"),&server_cb_ping_handler);
108 INFO1("SERVER: >>>>>>>> Listening on port %d <<<<<<<<",
109 gras_socket_my_port(g->sock));
112 errcode = gras_msg_handle(600.0);
113 if (errcode != no_error)
120 gras_socket_close(g->sock);
123 INFO0("SERVER: Done.");
127 /* **********************************************************************
129 * **********************************************************************/
131 /* Global private data */
136 /* Function prototypes */
137 int client (int argc,char *argv[]);
139 int client(int argc,char *argv[]) {
146 const char *host = "127.0.0.1";
149 gras_init(&argc, argv, NULL);
150 g=gras_userdata_new(client_data_t);
157 INFO2("Launch client (server on %s:%d)",host,port);
158 gras_os_sleep(1,0); /* Wait for the server startup */
159 if ((errcode=gras_socket_client(host,port,&(g->sock)))) {
160 ERROR1("Client: Unable to connect to the server. Got %s",
161 xbt_error_name(errcode));
164 INFO2("Client: Connected to %s:%d.",host,port);
169 INFO2("Client: >>>>>>>> Connected to server which is on %s:%d <<<<<<<<",
170 gras_socket_peer_name(g->sock),gras_socket_peer_port(g->sock));
173 errcode = gras_msg_send(g->sock, gras_msgtype_by_name("ping"), &ping);
174 if (errcode != no_error) {
175 fprintf(stderr, "Client: Unable send PING to server (%s)\n",
176 xbt_error_name(errcode));
177 gras_socket_close(g->sock);
180 INFO3("Client: >>>>>>>> Message PING(%d) sent to %s:%d <<<<<<<<",
182 gras_socket_peer_name(g->sock),gras_socket_peer_port(g->sock));
184 if ((errcode=gras_msg_wait(6000,gras_msgtype_by_name("pong"),
186 ERROR1("Client: Why can't I get my PONG message like everyone else (%s)?",
187 xbt_error_name(errcode));
188 gras_socket_close(g->sock);
192 INFO3("Client: >>>>>>>> Got PONG(%d) got from %s:%d <<<<<<<<",
194 gras_socket_peer_name(from),gras_socket_peer_port(from));
196 gras_socket_close(g->sock);
199 INFO0("Client: Done.");