Public bug reported:
I'm trying to debug the intermittent timeout errors I'm seeing in s-i
when integrated with u-d-m. A TimeoutError means that s-i does not see
the 'finished' signal in response to a successful group download (of
course, a canceled or error signal would also terminate the s-i client
reactor, but I don't see those either).
I added some debugging to my test http/https server to log the requests.
Using this set up I captured the output during one of the timed out
tests, and what I saw was this (excerpt):
127.0.0.1 - - [04/Feb/2014 16:33:28] "GET /stable/nexus7/index.json HTTP/1.1"
200 -
127.0.0.1 - - [04/Feb/2014 16:33:28] "GET /stable/nexus7/index.json.asc
HTTP/1.1" 200 -
127.0.0.1 - - [04/Feb/2014 16:33:28] "GET /3/4/5.txt HTTP/1.1" 200 -
127.0.0.1 - - [04/Feb/2014 16:33:28] "GET /3/4/5.txt.asc HTTP/1.1" 200 -
127.0.0.1 - - [04/Feb/2014 16:33:28] "GET /4/5/6.txt HTTP/1.1" 200 -
127.0.0.1 - - [04/Feb/2014 16:33:28] "GET /4/5/6.txt.asc HTTP/1.1" 200 -
127.0.0.1 - - [04/Feb/2014 16:33:28] "GET /5/6/7.txt HTTP/1.1" 200 -
ERROR
What's interesting about this is that I expected /5/6/7.txt.asc to also be
downloaded, but it never was. IOW, the GET for 7.txt.asc was never seen by the
http server. This leads me to think that something is happening to cause u-d-m
to not process the entire group download, or to hang before it requests
7.txt.asc. If it were hanging or not completing the group download, then it
would make sense that s-i would never see the 'finished' signal that would
terminate the reactor.
Unfortunately, due to previously reported bugs, it's nearly impossible
to directly correlate this output with u-d-m output so that I can tell
what u-d-m is doing while the s-i http server is expected to see one
more file download.
** Affects: ubuntu-download-manager (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1276347
Title:
Some files are never downloaded (while under test)
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