int main(int argc,char** argv){
  msg r,t;
  init(HOST,PORT);
//      recv_message(&t);
//      send_message(&t);

        int file = open("primit", O_WRONLY | O_CREAT | O_TRUNC, 0644);
        printf("receiv\n");
        fflush(stdout);

        printf("receive message = %d\n",recv_message(&r));
        fflush(stdout);
        if (recv_message(&r)<0){
                perror("Receive message");
                return -1;
        }
        while(recv_message(&r) > 0){
                write(file, r.payload, sizeof(r.payload));

                printf("[%s] Got msg with payload: %s\n",argv[0],r.payload);

                sprintf(t.payload,"ACK(%s)",r.payload);
                t.len = strlen(t.payload+1);
                send_message(&t);
        }
        close(file);

        return 0;
}