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SSR redirect loop with custom base href (>=20.3.7) #31902
Description
Command
build
Is this a regression?
- Yes, this behavior used to work in the previous version
The previous version in which this bug was not present was
20.3.6
Description
In our app, we optionally use the X-Forwarded-Prefix header to configure the base href. This works correctly in version 20.3.6, but after upgrading to 20.3.7 (and in later versions including v21), we encounter a redirect loop when a custom base href is used. The issue does not occur when the default base href is used.
domain.com– 200 OKdomain.com/app– 302 Found (redirect loop)
Minimal Reproduction
https://github.com/pf-vkocib/angular-ssr-20.3.7-redirect-loop-reproduction
- configure local nginx based on
example-nginx.conf npm installnpm run serve:ssr:ssr-redirect-loop- visit
localhost/app
(v20.3.6 branch uses previous version and it is ok)
Exception or Error
ERR_TOO_MANY_REDIRECTS
Your Environment
Angular CLI: 20.3.7
Node: 20.19.2
Package Manager: npm 10.8.2
OS: darwin arm64
Angular: 20.3.13
... common, compiler, compiler-cli, core, forms
... platform-browser, platform-server, router
Package Version
------------------------------------
@angular-devkit/architect 0.2003.7
@angular-devkit/core 20.3.7
@angular-devkit/schematics 20.3.7
@angular/build 20.3.7
@angular/cli 20.3.7
@angular/ssr 20.3.7
@schematics/angular 20.3.7
rxjs 7.8.2
typescript 5.9.3
zone.js 0.15.1
Anything else relevant?
No response
Activity
fix(@angular/ssr): handle `X-Forwarded-Prefix` and `APP_BASE_HREF` in…
fix(@angular/ssr): handle `X-Forwarded-Prefix` and `APP_BASE_HREF` in…
fix(@angular/ssr): handle `X-Forwarded-Prefix` and `APP_BASE_HREF` in…
fix(@angular/ssr): handle `X-Forwarded-Prefix` and `APP_BASE_HREF` in…
fix(@angular/ssr): handle `X-Forwarded-Prefix` and `APP_BASE_HREF` in…
angular-automatic-lock-bot commentedon Dec 25, 2025
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