def read_until(self, match, timeout=None):
        n = len(match)
        self.process_rawq()
        i = self.cookedq.find(match)
        if i >= 0:
            i = i+n
            buf = self.cookedq[:i]
            self.cookedq = self.cookedq[i:]
            return buf
        s_reply = ([self], [], [])
        s_args = s_reply
        if timeout is not None:
            s_args = s_args + (timeout,)
            from time import time
            time_start = time()
        while not self.eof and select(*s_args) == s_reply:
            i = max(0, len(self.cookedq)-n)
            self.fill_rawq()
            self.process_rawq()
            i = self.cookedq.find(match, i)
            if i >= 0:
                i = i+n
                buf = self.cookedq[:i]
                self.cookedq = self.cookedq[i:]
                return buf
            if timeout is not None:
                elapsed = time() - time_start
                if elapsed >= timeout:
                    break
                s_args = s_reply + (timeout-elapsed,)
        return self.read_very_lazy()
Return the real host for the given WSGI environment.  This takes care
dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/telnetlib.py/Telnet.read_until--crossover with--dataset/ETHPy150Open getsentry/raven-python/raven/utils/wsgi.py/get_host