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| #include "dgram_mod_socket.h"
| #include "shm_mm.h"
| #include "usg_common.h"
|
| void server(int port) {
| void *socket = dgram_mod_open_socket(REQ_REP);
| dgram_mod_bind(socket, port);
| int size;
| void *recvbuf;
| char sendbuf[512];
| int rv;
| int remote_port;
| while ( (rv = dgram_mod_recvfrom(socket, &recvbuf, &size, &remote_port) ) == 0) {
| sprintf(sendbuf, "SERVER RECEIVED: %s", recvbuf);
| puts(sendbuf);
| dgram_mod_sendto(socket, sendbuf, strlen(sendbuf) + 1, remote_port);
| free(recvbuf);
| }
| dgram_mod_close_socket(socket);
| }
|
| void client(int port) {
| void *socket = dgram_mod_open_socket(REQ_REP);
| int size;
| void *recvbuf;
| char sendbuf[512];
| while (true) {
| printf("request: ");
| scanf("%s", sendbuf);
| dgram_mod_sendandrecv(socket, sendbuf, strlen(sendbuf) + 1, port, &recvbuf, &size);
| printf("reply: %s\n", (char *)recvbuf);
| free(recvbuf);
| }
| dgram_mod_close_socket(socket);
| }
|
|
|
| int main(int argc, char *argv[]) {
| shm_init(512);
| int port;
| if (argc < 3) {
| fprintf(stderr, "Usage: reqrep %s|%s <PORT> ...\n", "server", "client");
| return 1;
| }
|
| port = atoi(argv[2]);
|
| if (strcmp("server", argv[1]) == 0) {
| server(port);
| }
|
| if (strcmp("client", argv[1]) == 0)
| client(port);
|
|
| return 0;
| }
|
|
