#include "mod_socket.h"
#include "shm_mm_wraper.h"
#include "usg_common.h"

void server(int port) {
  void *socket = mod_open_socket(REQ_REP);
  mod_socket_bind(socket, port);
  mod_listen(socket);
  int size;
  void *recvbuf;
  char sendbuf[512];
  int rv;
  while ( (rv = mod_recv(socket, &recvbuf, &size) ) == 0) {
    sprintf(sendbuf, "SERVER RECEIVED: %s", recvbuf);
    puts(sendbuf);
    mod_send(socket, sendbuf, strlen(sendbuf) + 1);
    free(recvbuf);
  }
  mod_close_socket(socket);
}

void client(int port) {
  void *socket = mod_open_socket(REQ_REP);
  mod_connect(socket, port);
  int size;
  void *recvbuf;
  char sendbuf[512];
  while (true) {
    printf("request: ");
    scanf("%s", sendbuf);
    mod_send(socket, sendbuf, strlen(sendbuf) + 1);
    mod_recv(socket, &recvbuf, &size);
    printf("reply: %s\n", (char *)recvbuf);
    free(recvbuf);
  }
  mod_close_socket(socket);
}

 

int main(int argc, char *argv[]) {
  shm_mm_wrapper_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;
}