1 void ClientEcho(FILE * filein, int socket);
3 int main(int argc, char *argv[])
9 struct sockaddr_in dst_addr;
12 if ( (sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
13 perror("Socket creation error");
16 /* initialize address */
17 memset((void *) &dst_addr, 0, sizeof(dst_addr)); /* clear address */
18 dst_addr.sin_family = AF_INET; /* address type is INET */
19 dst_addr.sin_port = htons(7); /* echo port is 7 */
20 /* build address using inet_pton */
21 if ( (inet_pton(AF_INET, argv[optind], &dst_addr.sin_addr)) <= 0) {
22 perror("Address creation error");
25 connect(sock, (struct sockaddr *) &dst_addr, sizeof(dst_addr));
26 /* do read/write operations */
27 ClientEcho(stdin, sock);