+/* $Id$ */
+
+/* ping - ping/pong demo of GRAS features */
+
+/* Copyright (c) 2003, 2004 Martin Quinson. All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+
+#include "gras.h"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(Ping,"Messages specific to this example");
+
+/* **********************************************************************
+ * Comon code
+ * **********************************************************************/
+
+typedef struct {
+ int dummy;
+} msg_ping_t;
+
+/* Function prototypes */
+void register_messages(void);
+
+/* Code */
+void register_messages(void) {
+
+ gras_msgtype_declare("ping", gras_datadesc_by_name("int"));
+ gras_msgtype_declare("pong", gras_datadesc_by_name("int"));
+}
+
+/* **********************************************************************
+ * Server code
+ * **********************************************************************/
+
+/* Global private data */
+typedef struct {
+ gras_socket_t sock;
+ int endcondition;
+} server_data_t;
+
+/* Function prototypes */
+int server_cb_ping_handler(gras_socket_t expeditor,
+ void *payload_data);
+int server (int argc,char *argv[]);
+
+
+int server_cb_ping_handler(gras_socket_t expeditor,
+ void *payload_data) {
+
+ xbt_error_t errcode;
+ int msg=*(int*)payload_data;
+ gras_msgtype_t *pong_t=NULL;
+
+ server_data_t *g=(server_data_t*)gras_userdata_get();
+
+ g->endcondition = 0;
+ INFO3("SERVER: >>>>>>>> Got message PING(%d) from %s:%d <<<<<<<<",
+ msg,
+ gras_socket_peer_name(expeditor),
+ gras_socket_peer_port(expeditor));
+
+ msg = 4321;
+ errcode = gras_msg_send(expeditor, gras_msgtype_by_name("pong"), &msg);
+
+ if (errcode != no_error) {
+ ERROR1("SERVER: Unable answer with PONG: %s\n", xbt_error_name(errcode));
+ gras_socket_close(g->sock);
+ return 1;
+ }
+
+ INFO0("SERVER: >>>>>>>> Answed with PONG(4321) <<<<<<<<");
+ g->endcondition = 1;
+ gras_socket_close(expeditor);
+ return 1;
+}
+
+int server (int argc,char *argv[]) {
+ xbt_error_t errcode;
+ server_data_t *g;
+ gras_msgtype_t *ping_msg=NULL;
+
+ int port = 4000;
+
+ gras_init(&argc,argv, NULL);
+ g=gras_userdata_new(server_data_t);
+
+ if (argc == 2) {
+ port=atoi(argv[1]);
+ }
+
+ INFO1("Launch server (port=%d)", port);
+
+ if ((errcode=gras_socket_server(port,&(g->sock)))) {
+ CRITICAL1("Error %s encountered while opening the server socket",
+ xbt_error_name(errcode));
+ return 1;
+ }
+
+ register_messages();
+ register_messages();
+ gras_cb_register(gras_msgtype_by_name("ping"),&server_cb_ping_handler);
+
+ INFO1("SERVER: >>>>>>>> Listening on port %d <<<<<<<<",
+ gras_socket_my_port(g->sock));
+ g->endcondition=0;
+
+ errcode = gras_msg_handle(600.0);
+ if (errcode != no_error)
+ return errcode;
+ if (g->endcondition)
+
+ if (!gras_if_RL())
+ gras_os_sleep(1,0);
+
+ gras_socket_close(g->sock);
+ free(g);
+ gras_exit();
+ INFO0("SERVER: Done.");
+ return no_error;
+}
+
+/* **********************************************************************
+ * Client code
+ * **********************************************************************/
+
+/* Global private data */
+typedef struct {
+ gras_socket_t sock;
+} client_data_t;
+
+/* Function prototypes */
+int client (int argc,char *argv[]);
+
+int client(int argc,char *argv[]) {
+ xbt_error_t errcode;
+ client_data_t *g;
+
+ gras_socket_t from;
+ int ping, pong;
+
+ const char *host = "127.0.0.1";
+ int port = 4000;
+
+ gras_init(&argc, argv, NULL);
+ g=gras_userdata_new(client_data_t);
+
+ if (argc == 3) {
+ host=argv[1];
+ port=atoi(argv[2]);
+ }
+
+ INFO2("Launch client (server on %s:%d)",host,port);
+ gras_os_sleep(1,0); /* Wait for the server startup */
+ if ((errcode=gras_socket_client(host,port,&(g->sock)))) {
+ ERROR1("Client: Unable to connect to the server. Got %s",
+ xbt_error_name(errcode));
+ return 1;
+ }
+ INFO2("Client: Connected to %s:%d.",host,port);
+
+
+ register_messages();
+
+ INFO2("Client: >>>>>>>> Connected to server which is on %s:%d <<<<<<<<",
+ gras_socket_peer_name(g->sock),gras_socket_peer_port(g->sock));
+
+ ping = 1234;
+ errcode = gras_msg_send(g->sock, gras_msgtype_by_name("ping"), &ping);
+ if (errcode != no_error) {
+ fprintf(stderr, "Client: Unable send PING to server (%s)\n",
+ xbt_error_name(errcode));
+ gras_socket_close(g->sock);
+ return 1;
+ }
+ INFO3("Client: >>>>>>>> Message PING(%d) sent to %s:%d <<<<<<<<",
+ ping,
+ gras_socket_peer_name(g->sock),gras_socket_peer_port(g->sock));
+
+ if ((errcode=gras_msg_wait(6000,gras_msgtype_by_name("pong"),
+ &from,&pong))) {
+ ERROR1("Client: Why can't I get my PONG message like everyone else (%s)?",
+ xbt_error_name(errcode));
+ gras_socket_close(g->sock);
+ return 1;
+ }
+
+ INFO3("Client: >>>>>>>> Got PONG(%d) got from %s:%d <<<<<<<<",
+ pong,
+ gras_socket_peer_name(from),gras_socket_peer_port(from));
+
+ gras_socket_close(g->sock);
+ free(g);
+ gras_exit();
+ INFO0("Client: Done.");
+ return 0;
+}
