36   struct sockaddr_in serveraddr;  in client_thread_udp()  local
37   socklen_t addrlen = sizeof(serveraddr);  in client_thread_udp()
39   int succeeded = getsockname(sockfd, (struct sockaddr *)&serveraddr, &addrlen);  in client_thread_udp()
42   succeeded = sendto(sockfd, buf, kBufSize, 0, (struct sockaddr *)&serveraddr,  in client_thread_udp()
43                      sizeof(serveraddr));  in client_thread_udp()
57   struct sockaddr_in serveraddr;  in main()  local
62   memset(&serveraddr, 0, sizeof(serveraddr));  in main()
63   serveraddr.sin_family = AF_INET;  in main()
64   serveraddr.sin_addr.s_addr = htonl(INADDR_ANY);  in main()
65   serveraddr.sin_port = 0;  in main()
67   int bound = bind(sockfd, (struct sockaddr *)&serveraddr, sizeof(serveraddr));  in main()
71       pthread_create(&client_thread, NULL, client_thread_udp, &serveraddr);  in main()