502 on file upload
createtodayorg
PROOP

a month ago

Hi! I'm facing quite odd issue, when uploading file bigger than 10-15MB, it throws connection returning 502. And I'm sure not the code is the problem, cause I have no panics, no logs, it does not even get to the handler.

I have no cloudflare or anything, no proxy, no load balancer. I've seen that this case is not unique (like this one: https://station.railway.com/questions/increase-max-file-upload-with-php-nixpac-8e47f9b1)

We're already started rewriting to presigned urls, but feels like there's a bug or something in railway

Here's the http log:

requestId:

"J2OKuUuXQKmwZi_-m3z_FQ"

timestamp:

"2025-10-22T12:34:31.853755761Z"

method:

"POST"

path:

"/project/media"

host:

""

httpStatus:

502

upstreamProto:

"HTTP/1.1"

downstreamProto:

"HTTP/1.1"

responseDetails:

""

totalDuration:

110441

upstreamAddress:

"http://[fd12:2fe2:4e73:0:1000:4c:69b2:dd08]:8080"

clientUa:

"PostmanRuntime/7.49.0"

upstreamRqDuration:

110441

txBytes:

11

rxBytes:

16810891

srcIp:

"5.129.236.84"

edgeRegion:

"europe-west4-drams3a"

upstreamErrors:

""

$10 Bounty

3 Replies

Railway
BOT

a month ago

Hey there! We've found the following might help you get unblocked faster:

If you find the answer from one of these, please let us know by solving the thread!


brody
EMPLOYEE

a month ago

This thread has been marked as public for community involvement, as it does not contain any sensitive or personal information. Any further activity in this thread will be visible to everyone.

Status changed to Open brody about 2 months ago


fra
HOBBY

a month ago

can you add logs to you app to improve visibility?

do you receive the request in the app?

can you see the app processing the request?

do you have any timeout in the app?


perhaps youre running into a timeout issue? this similar thread had an issue and recommended going to websockets instead of HTTP. otherwise, your logs aren't sufficient to indicate what's the issue


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