":method" is an invalid header name.

[superstreber3]

Which @angular/* package(s) are the source of the bug?

platform-server, Don't known / other

Is this a regression?

Yes

Description

After upgrading to 19.0.0-rc.1 and enabling SSR, I received this error on startup. When I use Angular 18, I don't receive that error.

I tried it with node 18, 21 and 22

¨

Please provide a link to a minimal reproduction of the bug

No response

Please provide the exception or error you saw

08:51:08 [vite] Internal server error: Headers.append: ":method" is an invalid header name.
at webidl.errors.exception (node:internal/deps/undici/undici:1801:14)
at webidl.errors.invalidArgument (node:internal/deps/undici/undici:1812:28)
at appendHeader (node:internal/deps/undici/undici:2218:29)
at _Headers.append (node:internal/deps/undici/undici:2341:16)
at createRequestHeaders (C:\Projects\k8-fastbuild-ST-70f2edae98f4\bin\packages\angular\ssr\node\src\request.mjs:35:21)
at createWebRequestFromNodeRequest (C:\Projects\k8-fastbuild-ST-70f2edae98f4\bin\packages\angular\ssr\node\src\request.mjs:20:18)
at C:\Projects**\client\node_modules@angular\build\src\tools\vite\middlewares\ssr-middleware.js:37:40
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

Please provide the environment you discovered this bug in (run ng version)

Angular CLI: 19.0.0-rc.1
Node: 18.20.4
Package Manager: yarn 3.6.3
OS: win32 x64

Angular: 19.0.0-rc.1
... animations, cdk, cli, common, compiler, compiler-cli, core
... forms, material, platform-browser, platform-browser-dynamic
... platform-server, router, service-worker, ssr

Package Version

@angular-devkit/architect 0.1900.0-rc.1
@angular-devkit/build-angular 19.0.0-rc.1
@angular-devkit/core 19.0.0-rc.1
@angular-devkit/schematics 19.0.0-rc.1
@schematics/angular 19.0.0-rc.1
rxjs 7.8.1
typescript 5.5.4
zone.js 0.15.0

Anything else?

No response