3 months ago
Hi there,
Is there any way I can preserve "X-Forwarded-Host" header from the origin? Railway rewrites it with its own value, but I'd like to get the original header. I'm using a CDN in front of Railway and I need that header from CDN origin to route requests properly.
As a solution, I exposed service using TCP proxy and set that proxy to the CDN but preferrably I'd like to use a HTTP service so I can have access to metrics in Railway.
Pinned Solution
2 months ago
Can't use header with a different name, unfortunately, since I'm using a 3rd party CDN and i do not have control over that. I think the only viable solution in my case is expose service as TCP unless railway team decides to somehow preserve the headers.
4 Replies
3 months ago
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Status changed to Open brody • 3 months ago
3 months ago
If you check this link (railway util):
https://utilities-us-east.up.railway.app/raw
you can see the X-Real-Ip and the X-Forwarded-For has the real ip, you can use these 2 headers
fra
If you check this link (railway util):https://utilities-us-east.up.railway.app/rawyou can see the X-Real-Ip and the X-Forwarded-For has the real ip, you can use these 2 headers
3 months ago
I'm not sure how that helps
curl -H "x-forwarded-host: example.com" https://utilities-us-east.up.railway.app/raw
GET /raw HTTP/1.1
Host: utilities-us-east.up.railway.app
Accept: */*
Accept-Encoding: gzip
User-Agent: curl/8.12.1
X-Forwarded-For: 45.85.105.21
X-Forwarded-Host: utilities-us-east.up.railway.app
X-Forwarded-Proto: https
X-Railway-Edge: railway/europe-west4-drams3a
X-Railway-Request-Id: xJwO0zg7SeuNy-G0N8N_Fg
X-Real-Ip: 45.85.105.21
X-Request-Start: 1766517603052x-forwarded-host: example.com is not preserved, which i want to keep
2 months ago
I'm sorry, I read host and replied with the ip 
my bad, the x-header-* is added in railway gateway so it will always be overwritten by railway, can you explain a bit more what's your goal?
In theory, even if you have a CDN in front you should get the origin host in the x-forwarded-host, if you have a custom logic you might need to use a header with a different name
fra
I'm sorry, I read host and replied with the ip my bad, the x-header-* is added in railway gateway so it will always be overwritten by railway, can you explain a bit more what's your goal?In theory, even if you have a CDN in front you should get the origin host in the x-forwarded-host, if you have a custom logic you might need to use a header with a different name
2 months ago
Can't use header with a different name, unfortunately, since I'm using a 3rd party CDN and i do not have control over that. I think the only viable solution in my case is expose service as TCP unless railway team decides to somehow preserve the headers.
Status changed to Solved sarahkb125 • 2 months ago