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. */
11 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(Ping);
13 int client(int argc, char *argv[])
16 gras_socket_t toserver = NULL; /* peer */
22 const char *host = "127.0.0.1";
25 /* 1. Init the GRAS's infrastructure */
26 gras_init(&argc, argv);
28 /* 2. Get the server's address. The command line override defaults when specified */
34 INFO2("Launch client (server on %s:%d)", host, port);
36 /* 3. Create a socket to speak to the server */
39 toserver = gras_socket_client(host, port);
43 if (e.category != system_error)
44 /* dunno what happened, let the exception go through */
45 RETHROW0("Unable to connect to the server: %s");
51 INFO2("Connected to %s:%d.", host, port);
53 /* 4. Register the messages.
54 See, it doesn't have to be done completely at the beginning, only before use */
55 ping_register_messages();
57 /* 5. Keep the user informed of what's going on */
58 INFO2(">>>>>>>> Connected to server which is on %s:%d <<<<<<<<",
59 gras_socket_peer_name(toserver), gras_socket_peer_port(toserver));
61 /* 6. Prepare and send the ping message to the server */
64 gras_msg_send(toserver, "ping", &ping);
67 gras_socket_close(toserver);
68 RETHROW0("Failed to send PING to server: %s");
70 INFO3(">>>>>>>> Message PING(%d) sent to %s:%d <<<<<<<<",
72 gras_socket_peer_name(toserver), gras_socket_peer_port(toserver));
74 /* 7. Wait for the answer from the server, and deal with issues */
76 gras_msg_wait(6000, "pong", &from, &pong);
79 gras_socket_close(toserver);
80 RETHROW0("Why can't I get my PONG message like everyone else: %s");
83 /* 8. Keep the user informed of what's going on, again */
84 INFO3(">>>>>>>> Got PONG(%d) from %s:%d <<<<<<<<",
85 pong, gras_socket_peer_name(from), gras_socket_peer_port(from));
87 /* 9. Free the allocated resources, and shut GRAS down */
88 gras_socket_close(toserver);