--- /dev/null
+void ClientEcho(FILE * filein, int socket)
+{
+ char sendbuff[MAXLINE+1], recvbuff[MAXLINE+1];
+ int nread, nwrite;
+ int maxfd;
+ fd_set fset;
+ /* initialize file descriptor set */
+ FD_ZERO(&fset);
+ maxfd = max(fileno(stdin), socket) + 1;
+ while (1) {
+ FD_SET(socket, &fset); /* set for the socket */
+ FD_SET(fileno(stdin), &fset); /* set for the standard input */
+ select(maxfd, &fset, NULL, NULL, NULL); /* wait for read ready */
+ if (FD_ISSET(fileno(stdin), &fset)) { /* if ready on stdin */
+ if (fgets(sendbuff, MAXLINE, filein) == NULL) { /* if no input */
+ return; /* we stopped client */
+ } else { /* else we have to write to socket */
+ nwrite = FullWrite(socket, sendbuff, strlen(sendbuff));
+ if (nwrite < 0) { /* on error stop */
+ printf("Errore in scrittura: %s", strerror(errno));
+ return;
+ }
+ }
+ }
+ if (FD_ISSET(socket, &fset)) { /* if ready on socket */
+ nread = read(socket, recvbuff, strlen(sendbuff)); /* do read */
+ if (nread < 0) { /* error condition, stop client */
+ printf("Errore in lettura: %s\n", strerror(errno));
+ return;
+ }
+ if (nread == 0) { /* server closed connection, stop */
+ printf("EOF sul socket\n");
+ return;
+ }
+ recvbuff[nread] = 0; /* else read is ok, write on stdout */
+ if (fputs(recvbuff, stdout) == EOF) {
+ perror("Errore in scrittura su terminale");
+ return;
+ }
+ }
+ }
+}