connection reset by azure every 80k bytes received

martin 20

hi everyone, there's something wrong with my azure cloud, i tried wget "http://20.163.57.161/v2/note/audio/get?id=ed35c33c38874a2a9337026fa50d53d9" -O 1234 and i got connection reset every 80k bytes received, and then i tried wget "http://10.0.0.4/v2/note/audio/get?id=ed35c33c38874a2a9337026fa50d53d9" -O 1234and it works fine. which means my server was configured ok, the problem maybe comes from NAT or something else.

and here's my network diagram, it's very simple, and i tried many times to delete and rebuild network interface, public ips, and its all doesn't works, can someone help? thanks a lot.

azure

martin 20

and here's the wget output:

--2023-12-12 18:04:34--  https://www.11111.com//v2/note/audio/get?id=ed35c33c38874a2a9337026fa50d53d9
Resolving localhost (localhost)... 127.0.0.1
Connecting to localhost (localhost)|127.0.0.1|:7890... connected.
Proxy request sent, awaiting response... 200 
Length: 970504 (948K) [audio/mpeg]
Saving to: ‘xxoo’
xxoo      10%[==========>                     ]  95.75K   583KB/s    in 0.2s    
2023-12-12 18:04:35 (583 KB/s) - Connection closed at byte 98045. Retrying.
--2023-12-12 18:04:36--  (try: 2)  https://www.11111.com//v2/note/audio/get?id=ed35c33c38874a2a9337026fa50d53d9
Connecting to localhost (localhost)|127.0.0.1|:7890... connected.
Proxy request sent, awaiting response... 200 
Length: 970504 (948K) [audio/mpeg]
Saving to: ‘xxoo’
xxoo                 10%[==========>                ]  95.75K   588KB/s    in 0.2s    
2023-12-12 18:04:37 (588 KB/s) - Connection closed at byte 98045. Retrying.
--2023-12-12 18:04:39--  (try: 3)  https://www.11111.com//v2/note/audio/get?id=ed35c33c38874a2a9337026fa50d53d9
Connecting to localhost (localhost)|127.0.0.1|:7890... connected.
Proxy request sent, awaiting response... 200 
Length: 970504 (948K) [audio/mpeg]
Saving to: ‘xxoo’
xxoo          10%[==========>           ]  95.75K   586KB/s    in 0.2s    
2023-12-12 18:04:40 (586 KB/s) - Connection closed at byte 98045. Retrying.

KapilAnanth-MSFT 36,861 Reputation points Microsoft Employee

2023-12-13T05:02:57.06+00:00
@martin

Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.

This looks like an issue from either the Server you are using (the server application) or the file in question.

I tried to reproduce this using a IIS Server and a .mp3 file of 5 MB.

I wasn't able to face any such issues.

Similarly, I am facing the same issue with your server via Browser as well.

As next steps,

You can try using the same file in a dummy IIS server in Azure and see if the issue prevails or not.

If this works, the problem is with the application in your VM

OR you can try using a different file in the same Application server

If this works, this means the issue is with the file you are trying to download.

Cheers,

Kapil
martin 20 Reputation points

2023-12-13T06:13:07.2266667+00:00

@KapilAnanth-MSFT thanks for reply.

it's not my app server fault, i was tried wget the url from LAN address before, it's works fine, which means both the SpringBoot and Nginx works well, the problem maybe comes from otherwhere, the outgoing gateway or something else...

thanks.
martin 20 Reputation points

2023-12-13T06:19:27.6133333+00:00

@KapilAnanth-MSFT thanks for reply.

but it's was not my server's fault, i tried wget the URL by LAN address, away from the outgoing gateway, it's works fine, which means the SpringBoot and NGINX works well for me, the problem maybe comes from upper network settings.
KapilAnanth-MSFT 36,861 Reputation points Microsoft Employee

2023-12-13T06:48:15.5433333+00:00
@martin

Thanks for the info. However, I doubt that's the case as I am able to download a file hosted in an IIS Server under same conditions.

Also, from packet capture,

The FIN and PSH flag is set by the application

Can you check the application logs for a specific download(based on source IP) and see if there are any indicators?

From other sources,

https://serverfault.com/questions/1012367/nginx-cannot-send-whole-response-in-a-slow-connection

Also,

Was the issue fixed now?

I tried to CURL and access the audio file from Browser, and it was successful for me now.

Cheers,

Kapil
martin 20 Reputation points

2023-12-13T07:32:56.5433333+00:00

@KapilAnanth-MSFT thanks, i found where the problem is, it's nginx's fault, nginx has no read/write permission to /proxy_temp/ directory, i solved it after change the owner of it. thanks again.
KapilAnanth-MSFT 36,861 Reputation points Microsoft Employee

2023-12-13T08:09:59.1266667+00:00

@martin

I'm glad that you were able to resolve your issue and thank you for posting your solution so that others experiencing the same thing can easily reference this!

Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others", I'll summarize our discussion and post the solution as an anwer.

Cheers,

Kapil
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Accepted answer

KapilAnanth-MSFT 36,861 Reputation points Microsoft Employee

2023-12-13T08:12:04.2633333+00:00
@martin

Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.

I tried to reproduce this using a IIS Server and a .mp3 file of 5 MB.

I wasn't able to face any such issues.

As next steps,

You can try using the same file in a dummy IIS server in Azure and see if the issue prevails or not.

If this works, the problem is with the application in your VM

OR you can try using a different file in the same Application server

If this works, this means the issue is with the file you are trying to download.

You informed this was server related ,

it's nginx's fault, nginx has no read/write permission to /proxy_temp/ directory, i solved it after change the owner of it.

Thanks for your continued contribution on Q&A and appreciate much for taking the time to share your feedback.

Thanks,

Kapil

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