Parses the port out of an EPSV (RFC 2428) 229 reply.
The reply carries (|||PORT|) where the address family and host fields are empty and the
port sits between the last two | delimiters; the host is reused from the control channel.
Parameters
line: string
The full reply text, e.g. 229 Entering Extended Passive Mode (|||49152|).
Parses the port out of an
EPSV(RFC 2428)229reply.The reply carries
(|||PORT|)where the address family and host fields are empty and the port sits between the last two|delimiters; the host is reused from the control channel.