| int main (int argc, char *argv[]) |
| int s, len, o, port = 6666; |
| socklen_t addr_len = sizeof addr; |
| s = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
| setsockopt (3, SOL_SOCKET, SO_REUSEADDR, &o, len); |
| addr.sin_family = AF_INET; |
| addr.sin_port = htons (port); |
| addr.sin_addr.s_addr = INADDR_ANY; /* receive broadcasts */ |
| bind (s, (struct sockaddr *) &addr, sizeof addr); |
| len = recvfrom (s, buf, sizeof buf, 0, (struct sockaddr *) &addr, &addr_len); |
| if (write (1, buf, len) != len) |
| fprintf(stderr, "WARNING: serial characters dropped\n"); |