X-Git-Url: https://gapil.gnulinux.it/gitweb/?a=blobdiff_plain;f=listati%2FUDP_ClientEcho.c;fp=listati%2FUDP_ClientEcho.c;h=746d5a772a3e3de7ab73213569556ec285b0be91;hb=a0184b68ca9dced41be95342ffd8a8ee04d2b861;hp=0000000000000000000000000000000000000000;hpb=9eb4436b75582594619576d54f28073ba027111a;p=gapil.git

diff --git a/listati/UDP_ClientEcho.c b/listati/UDP_ClientEcho.c
new file mode 100644
index 0000000..746d5a7
--- /dev/null
+++ b/listati/UDP_ClientEcho.c
@@ -0,0 +1,31 @@
+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;
+	}
+	if (nread == 0) { /* server closed connection, stop */
+	    return;
+	}
+	recvbuff[nread] = 0;   /* else read is ok, write on stdout */
+	if (fputs(recvbuff, stdout) == EOF) {
+	    perror("Errore in scrittura su terminale");
+	    return;
+	}
+    }
+}