MMSes hangs MMSC

MMSes hangs MMSC SearchSearch
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Mindaugas Riauba
Unregistered guest
Posted on Friday, November 19, 2004 - 02:33 pm:   

Hello,

Sometimes from other MMSC we receive messages which "hangs" MMSC. That is MMSC stops it's normal operation.
Message files can be found in \VASPQ directory.

Two examples of such messages attached.

application/x-zip-compressedBad MMSes
bad_mms.zip (14.7 k)
Bryce Norwood - NowSMS Support
Board Administrator
Username: Bryce

Post Number: 3778
Registered: 10-2002
Posted on Sunday, December 05, 2004 - 09:39 pm:   

Hi Mindaugus,

If you experience a problem of this severity, please do not hesitate to e-mail nowsms@now.co.uk directly. Sometimes we fall a bit behind monitoring the discussion board, and I'm sorry that we were not able to address this issue in a timely fashion.

Obviously, the most important issue is to address the problem with the bad messages causing operational problems for the MMSC.

I've uploaded a temporary patch under the link http://www.nowsms.com/download/20041205.zip.

But I'm also concerned about how these corrupt messages could get into the system.

My thinking here is that it is related to the problem that you mentioned several weeks ago with the SonyEricsson S700 and truncated messages. These message files have the exact same symptoms. (And the only way that I can see these corrupt messages coming into the system is via MM1 or EAIF.)

So, I do think it is crucial to get that problem resolved.

I can't find the message thread about this problem out here. I think we might have started the discussion in the following thread:

http://support.nowsms.com/discus/messages/485/6857.html

And the continued it with e-mail.

As I recall, the problem was that MMS messages being sent by a SonyEricsson S700 were truncated.

We looked at the logs from the MMSC, and it appeared that the messages were already truncated at the point at which they arrived at the MMSC. The messages were coming in to us from the WAP gateway with the MMS messages already truncated.

I mentioned how we had experienced an issue like this in Now.WAP some time ago, and you should upgrade if you are using that product. You mentioned that you were using another WAP proxy.

We could try to look at it with Ethereal, but as I recall, the "Content-length:" header that was received by the MMSC reflected the truncated size of the message. So that tells me that the message is getting truncated before it gets to the MMSC, since the MMSC bases its calculation of the message size on this HTTP header.

Were you able to make any progess with that issue?

Were you able to try a test where the same phone routed the message through Now.WAP to confirm that the problem was at the WAP proxy?

-bn
Mindaugas Riauba
Unregistered guest
Posted on Tuesday, December 07, 2004 - 11:21 am:   

What was strange that only messages going to other MMSC (\VASPQ directory) are hanging NowSMS.
And yes, about S700 we started there and continued later via e-mail.
Your two suggestions were either try to update firmware on S700 or try your WAP proxy. Since we had test sample of the phone we were unable to update firmware.
And I did not tried to try your WAP proxy yet. And I think I mentioned - for wap gateway we are using http://www.kannel.org.