[sr-dev] lots of trouble with latest sr

[Juha Heinanen]

i have started to get those "could not find corresponding listening
socket" all the time.

also, looks like the previous proxy-authorization pv problem that i
wrongly reported is due to 

remove_hf("Proxy-Authorization");

having no effect, i.e., the header is included in outgoing request even
when i make the above call to remove it.

i added some debug in my script that verified that the above call is
done and still the original p-a header shows up in outgoing request.

i don't know what to do next because looks like nothing that i try
works.

-- juha