void ClientEcho(FILE * filein, int socket, struct sockaddr_in * serv_addr) { char sendbuff[MAXLINE+1], recvbuff[MAXLINE+1]; int nread, nwrite; /* initialize file descriptor set */ while (1) { if (fgets(sendbuff, MAXLINE, filein) == NULL) { return; /* if no input just return */ } else { /* else we have to write to socket */ nwrite = sendto(socket, sendbuff, strlen(sendbuff), 0, (struct sockaddr *) serv_addr, sizeof(*serv_addr)); if (nwrite < 0) { /* on error stop */ printf("Errore in scrittura: %s", strerror(errno)); return; } } nread = recvfrom(socket, recvbuff, strlen(sendbuff), 0, NULL, NULL); if (nread < 0) { /* error condition, stop client */ printf("Errore in lettura: %s\n", strerror(errno)); return; } recvbuff[nread] = 0; /* else read is ok, write on stdout */ if (fputs(recvbuff, stdout) == EOF) { perror("Errore in scrittura su terminale"); return; } } }