getservbyname(...) public

name is a service name ("ftp", "telnet", …) and proto is a protocol name ("udp", "tcp", …). ’/etc/services’ (or your system’s equivalent) is searched for a service for name and proto, and the port number is returned.

Note that unlike Socket.getaddrinfo, proto may not be specified using the Socket::SOCK_* constants, a string must must be used.

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