Re: [Evolution] I/O operation timing out



On Sun, 2013-12-01 at 18:42 +0000, Pete Biggs wrote:

Almost certainly from your network stack; and my $$$ would be on your
ISP/customer router.

So it's this way?
-the router (Linksys WRT350N) is creating the time out (or something
else in the "subsystem")
-it aborts the mission and somehow signals Evolution, which then pops up
the timed out message

Sort of.  Your computer will send out ethernet packets to the internet
via the router.  The packets that it sends out originate in Evolution
via system calls.  Evolution doesn't create the packets, somewhere
further down the ethernet software stack does that, evolution just tells
the operating system what to put in the packets.

Once a packet is sent out, the system sits and waits for a response (as
instructed by Evolution), if there is no response received in a specific
time, then the operation times out.  The reasons that no packet has been
received back are numerous - the remote end may be down, there may be a
network problem, or some hardware may be malfunctioning.  There is no
way to say for sure without extensive logging and tracing at both ends.

Once the network operation has timed out, the OS tells the originating
program, i.e. Evolution, what has happened, and it is up to the program
what it does then; Evolution happens to pop up a message about it,
others may silently try again a number of times.  The timeout on the
network operation is, I think, set by the OS, not the application.

The bottom line is that the timeout is NOT Evolution failing, it is
merely reporting a failure elsewhere in the system.

P.
Thanks. That helps. I've decided there's something funky with that
particular wireless router's wireless that's causing the problem. I've
now got a different non-wireless router installed; everything works fine
when I go directly through it via Ethernet cable; I'm just using the
wireless part of the WRT350N as an AP; I'm getting the same problems as
soon as I go through it. And I don't seem to have the problems going
through other wireless systems.

Thanks to all.



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