Uniqush doesn't handle invalid payload received by apns server about uniqush-push HOT 14 CLOSED

@cmabastar-gumi Thanks for your report!

uniqush-push does not check the size of the message, I can fix this. However, OOM is not what I expected. Even if the message is too large, as long as it fits into the memory, there should not be OOM.

I tried UTF-8 characters with APNS, it can be correctly sent (and displayed on the screen.)

Let me see if I can reproduce the bug. It would be great if you can provide me more information so that I can easily reproduce it.

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@cmabastar-gumi I tried large payload with version 1.4.3, it can report error correctly. However, I didn't try concurrent connections. BTW, I just added a line of code to check the payload size before sending it. I hope it can fix this problem. Do you want me to build a binary for you? (it's in the exp branch)

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@cmabastar-gumi I probably figured out the reason of OOM error. Would you please provide the answer for the following questions?

• Are you using sandbox?
• How many notifications have you sent before the crash?
• Does uniqush crash even if you sent huge amount of valid notifications?

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@monnand Hi, Sorry for the late reply. Just got into the office.

• Are you using sandbox?
  no we didn't use sandbox for this.
• How many notifications have you sent before the crash?
  The number of notifications varied, as long as the invalid payload size were being sent continuously.

Here's the message from /var/log/messages: (Not sure if this helps )
Jul 3 12:25:42 ip-10-196-26-22 kernel: [7960078.943492] Out of memory: Kill process 15210 (uniqush-push) score 913 or sacrifice child
Jul 3 12:25:42 ip-10-196-26-22 kernel: [7960078.943501] Killed process 15210 (uniqush-push) total-vm:4286864kB, anon-rss:3620852kB, file-rss:0kB

• Does uniqush crash even if you sent huge amount of valid notifications?
  NO, it seems to work nicely though sending through apns was still slow.
• UTF-8 characters:
  yes, they are smoothly received by the device. The only gotcha we had was when trying to support japanese messages. Of course latin characters have different bytesize compared to utf-8 characters. So Instead of supporting 256 length of characters, we reduced the length of characters when sending japanese.
• Overall
  This problem should be fix as long as the 'invalid payload size' is properly handled by uniqush.

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@monnand ,

How do you suggest to improve our apns push? Currently we only have 1 uniqush server that is handling 32 concurrent connections, it seems that whenever we are sending apns push it slows down on its http-requests. GCM is ok and fine.

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@cmabastar-gumi Your report is very helpful. I just tested the APNS and it is really slow.

Now let's first focus on the payload size. Right now, I have created a set of binary files which has already fixed the payload size problem. i.e. It will refuse to send anything if the payload is too large. Besides, it also fixed a memory leak bug, which may or may not be related to the OOM error.

These binary files can be downloaded from:

• .deb
• .rpm
• .tar.gz

I'm not sure if they can fix your problem, but you can give it a try.

NOTE: I did not improve performance in the code now. I will profile the program and improve the performance in the next week. (I have a travel plan this week.)

Thank you very much for your report. I will do my best to fix it.

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Thanks @monnand

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@cmabastar-gumi Now I'm pretty sure the performance issue is caused by the feedback checking mechanism. It is considered as a bug, see #26. I will upload a fix soon.

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@cmabastar-gumi Please try the newly created binaries. If you have any other problem, please let me know.

• .deb
• .rpm
• .tar.gz

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Thanks for the quick release. This helps a lot :D

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@cmabastar-gumi Great! If it fixed your problem, then I would consider this issue, #25 and #26 as fixed. Please let me know if there is still problem.

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Hi,

Just wanna know if you'll do a fix to improve sending messages to APNS? I'm
assuming in the near futrue?

Cheers,

Christopher Marlon S. Abastar

On Sun, Jul 7, 2013 at 3:23 PM, monnand [email protected] wrote:

@cmabastar-gumi https://github.com/cmabastar-gumi Great! If it fixed
your problem, then I would consider this issue, #25https://github.com/uniqush/uniqush-push/issues/25and
#26 #26 as fixed. Please
let me know if there is still problem.

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@cmabastar-gumi How's the performance of the recently build? (version 1.4.4) If it is still a bottleneck, then it definitely deserves a high priority.

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I will consider this as fixed and put my effort on #27

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