+#include <gras.h>
+
+int server(int argc, char *argv[]) {
+ gras_socket_t mysock; /* socket on which I listen */
+ gras_socket_t toclient; /* socket used to write to the client */
+
+ gras_init(&argc,argv);
+
+ gras_msgtype_declare("hello", NULL);
+ mysock = gras_socket_server(atoi(argv[1]));
+
+ gras_msg_wait(60, gras_msgtype_by_name("hello"), &toclient, NULL /* no payload */);
+
+ fprintf(stderr,"Cool, we received the message from %s:%d.\n",
+ gras_socket_peer_name(toclient), gras_socket_peer_port(toclient));
+
+ gras_exit();
+ return 0;
+}
+int client(int argc, char *argv[]) {
+ gras_socket_t mysock; /* socket on which I listen */
+ gras_socket_t toserver; /* socket used to write to the server */
+
+ gras_init(&argc,argv);
+
+ gras_msgtype_declare("hello", NULL);
+ mysock = gras_socket_server_range(1024, 10000, 0, 0);
+
+ fprintf(stderr,"Client ready; listening on %d\n", gras_socket_my_port(mysock));
+
+ gras_os_sleep(1.5); /* sleep 1 second and half */
+ toserver = gras_socket_client(argv[1], atoi(argv[2]));
+
+ gras_msg_send(toserver,gras_msgtype_by_name("hello"), NULL);
+ fprintf(stderr,"That's it, we sent the data to the server on %s\n", gras_socket_peer_name(toserver));
+
+ gras_exit();
+ return 0;
+}