Method pre_select

sshuttle/ssnet.py:492–495

(self, r, w, x)

                break

    def pre_select(self, r, w, x):
        _add(r, self.rfile)
        if self.outbuf:
            _add(w, self.wfile)

    def callback(self, sock):
        (r, w, _) = select.select([self.rfile], [self.wfile], [], 0)