Network errors on download never recover

[jcoffland]

Trac	Data
Ticket	911
Reported by	@bb30994
Status	closed
Component	FAHClient
Priority	3 (major)
Milestone	Public Release

As a result of a user-complaint that V7 failed to retry a disconnect while downloading, I was able to reproduce this problem.
http://foldingforum.org/viewtopic.php?p=220960#p220928

In my case, I intentionally failed my network by powering off the router once the message about connecting to a WorkServer showed in the log. I then restored my network and was able to manage other clients on port 36330 and was able to view my stats from
http://fah-web.stanford.edu/cgi-bin/main.py?qtype=...&username=...

I then waited more than an hour and the client never reported a network error nor did it time-out and retry the connection.

Note that Next Attempt = Unknown

See the attached, but also see the example given by vmzy in the post referenced above.

[jcoffland]

Comment by @bb30994
Also note: Not surprisingly, the thread that's hung trying to download is not being managed by the slot. Pausing/Unpausing the slot does not reset V7 so it again attempts to download a new WU for that slot.

[jcoffland]

Comment by @bb30994
Furthermore, when downloading was stuck, fahclient.exe won't quit. You must kill it manually through Task Manager.

My hunch is that the fix for this may involve both the client and the server. Moreover this may be the cause for an accumulation of defunct connections.

[jcoffland]

Comment by @bb30994
Neither upload nor download recovered after several hours after needing to reset my router. (I forgot that I also had to check the FAH service and do a stop/start to get it running again.)

[jcoffland]

Comment by @bb30994
See also Ticket #952. [Probably not a duplicate, but certainly similar.]

[jcoffland]

Comment by @jcoffland
I believe this is fixed in v7.3.x.

[jcoffland]

Comment by @bb30994
See #983