getservbyport 181 ext/socket/getnameinfo.c sp = getservbyport(port, (flags & NI_DGRAM) ? "udp" : "tcp"); getservbyport 3275 ext/socket/socket.c sp = getservbyport((int)htons((uint16_t)portnum), protoname); getservbyport 2843 win32/win32.c r = getservbyport(port, proto);