— Function: sockets:lookup-protocol protocol

Lookup a protocol by name or number. Signals an unknown-protocol error if no protocol is found.

— Condition: sockets:unknown-protocol

Class precedence list: unknown-protocol, condition, t

Condition raised when a network protocol is not found.

— Generic Function: sockets:unknown-protocol-datum condition

Return the datum that caused the signalling of an unknown-protocol condition.