Get the first connection request waiting for this port and return
it as a connected socket.
If no connection request is waiting and the port is in nonblocking
mode (i.e. an accept callback is installed) then zero is returned.
Otherwise this function waits until a connection has arrived.
In Pike 7.8 and later the returned object is created via fd_factory() .
Note
In Pike 7.7 and later the resulting file object will be assigned
to the same backend as the port object.
This function completes a connection made from a remote machine to
this port. It returns a two-way stream in the form of a clone of
Stdio.File . The new file is by initially set to blocking mode.
Stdio.Port