[hylafax-users] Blocked by concurrent call problem since upgrade to 4.2.2

[Jordan Kojouharov <hylafax@xxxxxxxxxxx>]

Hi,

I upgraded from HylaFAX 4.2.1 to 4.2.2 a few days ago, and since the 
upgrade I have had the following strange problem:

Sometimes, when a fax is sent to the same destination number more than 
once, it never attempts to dial, but both jobs go straight into 'Blocked 
by concurrent call', and seem to lock each other out. My 
'MaxConcurrentCalls' parameter is set to '1'.

for example, the command used to submit the fax is (N=NUMBER):

sendfax -d <N1> -d <N1> -d <N2> -d <N3> -d <N3> <filename>

there are 3 unique numbers there, with two of them repeated (double 
destination).

The first job for N1, and N2 start sending, the second job for N1 goes 
into 'Blocked by concurrent' (so far so good), but BOTH jobs for N3 go 
directly into 'Blocked by concurrent call' and never actually attempt to 
send. After the send for N1 finishes, the second send to N1 unblocks as 
it should, and then it sends). Afterwards, the only thing left is two 
blocked jobs to N3, without an attempt to dial N3 ever been made, and 
there are no other active current jobs to N3 anywhere in the queue... 
The blocked jobs are always the ones to the 4th and 5th destination, 
never to the 1st and 2nd, even though those numbers are also identical.

It seems that it is not really a problem with sending to 2 identical 
destination numbers, as a send to 'N1 N2 N1 N3 N3 N2 N4', for example, 
works, as I found out with some testing. From the patterns, my random 
guess would be that this only appears to happen when there is more than 
one group of consecutive identical destinations specified.

The destination numbers have not changed, so I definitely know that this 
did NOT exist in 4.2.1. Any ideas if anything has changed in the 
scheduling of concurrent jobs from version 4.2.1 to 4.2.2?

regards,
Jordan



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