X-Git-Url: https://gapil.gnulinux.it/gitweb/?p=gapil.git;a=blobdiff_plain;f=listati%2FUDP_echo.c;fp=listati%2FUDP_echo.c;h=943ec75499fcc004f48ccdbaec2fac7d4f62c81c;hp=0000000000000000000000000000000000000000;hb=a0184b68ca9dced41be95342ffd8a8ee04d2b861;hpb=9eb4436b75582594619576d54f28073ba027111a

diff --git a/listati/UDP_echo.c b/listati/UDP_echo.c
new file mode 100644
index 0000000..943ec75
--- /dev/null
+++ b/listati/UDP_echo.c
@@ -0,0 +1,31 @@
+void ClientEcho(FILE * filein, int socket, struct sockaddr_in *serv_add);
+void SigTERM_hand(int sig);
+
+/* Program begin */
+int main(int argc, char *argv[])
+{
+/* 
+ * Variables definition  
+ */
+    int sock, i;
+    struct sockaddr_in serv_add;
+    ...
+    /* create socket */
+    if ( (sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+	perror("Socket creation error");
+	return 1;
+    }
+    /* initialize address */
+    memset((void *) &serv_add, 0, sizeof(serv_add)); /* clear server address */
+    serv_add.sin_family = AF_INET;                   /* address type is INET */
+    serv_add.sin_port = htons(7);                    /* echo port is 7 */
+    /* build address using inet_pton */
+    if ( (inet_pton(AF_INET, argv[optind], &serv_add.sin_addr)) <= 0) {
+	perror("Address creation error");
+	return 1;
+    }
+    /* do read/write operations */
+    ClientEcho(stdin, sock, &serv_add);
+    /* normal exit */
+    return 0;
+}