telnet.read_until() from telnetlib

[Jacek Popławski]

I have same problem with expect :-(

I am calling:

l=[expected]
result=self.telnet.expect(l,timeout)

it works in most cases, but sometimes (with exacly same "expected" value) it
returns -1,Nil,"some text"
the point is, that:
- connection is still active, so it should read more!
- it doesn't wait timeout seconds (I used time.time() to check that, time is
  zero, timeout is about 20s)!

In what case "expect" or "read_until" will stop reading without waiting for
timeout?

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