Re: [fetchmail-users] [BUG] fetchmail daemon does not resume fetching after a network outage

[Uli Z. <ul...@ri...>]

Am 28.06.2006 um 11:42 schrieb Matthias Andree:

> I wonder if the resolver would finally recover a long time after  
> the network connection has been restored

When I encountered this fetchmail bug for the first time in real  
life, fetchmail had stopped fetching mails for several *days*. So  
even if it recovered after a "long time", this would be of no  
practical value at all.

> - and perhaps if the negative TTL of cache entries can be configured.

I know of no such configuration possibilities in my case, but anyway,  
since getaddrinfo() works as it should once freeaddrinfo() is  
properly called, I don't think this is a caching issue at all.

> But OTOH, if you say that proper freeaddrinfo() use avoids the  
> problem, then we don't need to think about this part, because I  
> will add the missed freeaddrinfo() calls.

Exactly.

> I'll defend myself by calling these plain bugs, rather than not  
> taking these calls "not ... too seriously".

Just having a cursory glance at the remaining code, there are at  
least two other occurrences of freeaddrinfo() calls that could be  
prevented by a timeout in do_session() in driver.c:

One is directly in driver.c, line 1043.

The other are actually 4 occurrences of freeaddrinfo() in  
checkalias.c that, via several function calls, end up being called in  
line 1430 in driver.c in the fetch_messages() call. Depending on the  
method you'll use, these could be tricky to handle, because as I said  
there are several function calls between the fetch_messages() call  
and these freeaddrinfo() calls.

> Alright. Below is a fix to the problem you reported for servport.c  
> (it was easy to fix),

Indeed. :-)

> please try and let me know if MacOS X works with the IPPROTO_TCP  
> stuff.

Yep, it compiles just fine. Apart from that, there's not much to  
test, yet. :-)

             Bye
                     Uli
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