Control invokes conn.SyscallConn().Control.

ControlInt invokes conn.SyscallConn().Control and returns an integer.

Filter a list of conns with a list of predicates.

Apply a list of predicates to a conn.

FilterFD is like FilterConn except that it takes a raw fd.

FirstReuseport filters out all but the first socket of a reuseport group.

IgnoreENOTSOCK wraps a predicate and returns false instead of unix.ENOTSOCK.

InetListener returns a predicate that keeps listening TCP or connected UDP sockets.

LocalAddress filters for sockets with the given address and port.

Predicate is a condition for keeping or rejecting a file.