This is true that SMPP spec don't define DLR format but give only recommendation but this recommendation was adapted by 99% SMSC maker and is quasi standard. If someone think that he can ignore such fact we will ignore this SMSC maker and user who connecting such SMSC have to ask SMSC operator/maker why they ignore quasi standard. The more people ask the more SMSC operator/maker will think about to fix this issue.

Thanks,
Alexander Malysh

Am 23.10.2009 um 11:43 schrieb Nikos Balkanas:

Unfortunately mail archives list only first few mails. Many experienced contributors, like Alejandro, Milan and Seikath, hold the opinnion that this recommendation is an example, not an SMPP spec, and therefore more flexible. I myself consider it more strictly, as a spec.

However, no matter how you look at it, it is an ommision in the code, if the old parser considers only spaces and neglects string endings. I am not talking about free text parsing here. I still consider formal tags mandatory. Besides the change in code is trivial and minimal.

From the discussion, both Stanic and Seikath have branched off with their own versions. This is unfortunate.

I am attaching the last mail, which includes most previous ones. Please take the time to read some of it.

BR,
Nikos
----- Original Message -----
From: Alexander Malysh
To: Nikos Balkanas
Cc: devel@kannel.org Devel
Sent: Friday, October 23, 2009 12:03 PM
Subject: Re: Patch: smsc_smpp.c

Hi Nikos,

ok got it...

We have such discussions many times already and we always got to decision that kannel can't and should't support things that are not standard except it easy to integrate and has no impact on the code readability,
security etc.

I don't think we have to patch DLR parsing in SMPP due to this clear SMSC bug. This is some homegrown SMSC just don't accept quasi standard. This SMSC should be fixed and not kannel...

Thanks,
Alexander Malysh

PS: I think we should have this configurable and regex group matching should do it...

Am 22.10.2009 um 19:24 schrieb Nikos Balkanas:

Sure.

http://www.mail-archive.com/us...@kannel.org/msg17659.html
----- Original Message -----
From: Alexander Malysh
To: Nikos Balkanas
Cc: devel@kannel.org Devel
Sent: Thursday, October 22, 2009 5:58 PM
Subject: Re: Patch: smsc_smpp.c

can you please give me link to this discussion?

Thanks,
Alexander Malysh

Am 22.10.2009 um 13:17 schrieb Nikos Balkanas:

Hi,

Oh boy. You missed all the fun :-)

Original email by Latitude Test on 13/10/2009, where DELIVERD DLRs are misreported by kannel as failures (type 2). There was quite a discussion about whether it was a kannel bug, or an out of spec DLR. In the end it was a consensus that kannel needed a patch.

Bottom of the line: Spec is very loose at this point about DLR fields. Kannel expects either an exact format (sscanf) or it reverts to a more flexible old style search. Problem is that in the search it assumes that the value of each field is followed by space, and that is not necessarily true (if field is last in DLR).

Seikath also said that he has a couple of cases like that.

BTW, I have asked Latitude to test it, because I cannot, but he seems to get disappeared after creating all this stir :-(

BR
Nikos
----- Original Message -----
From: Alexander Malysh
To: Nikos Balkanas
Cc: devel@kannel.org Devel
Sent: Thursday, October 22, 2009 11:08 AM
Subject: Re: Patch: smsc_smpp.c

Hi Nikos,

could you please explain why we need this patch?

Thanks,
Alexander Malysh

Am 19.10.2009 um 18:30 schrieb Nikos Balkanas:

Hi,

A trivial patch, that should be able to handle all DLRs as long as they keep formal tags.

Please test.

BR,
Nikos<smsc_smpp.diff>





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