Add plain HTTP server for redirect and CA download#3474
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stacktraceghost
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Jun 29, 2026
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Tested on Windows and Linux, both work.
We need to document that the fingerprint of the downloaded certificate should be verified against the fingerprint logged by the Abacus server, to prevent man-in-the-middle attacks.
Is there an issue for this? We also need some documentation for adding the CA cert in Windows to the correct store.
| To trust the server, import the CA into the client trust store: `ca.pem` on | ||
| Linux/macOS/Firefox, `ca.cer` (DER) on Windows. | ||
| Linux/macOS/Firefox, `ca.cer` (DER) on Windows. The CA can be downloaded from the | ||
| running server at `/ca.pem` and `/ca.cer`. |
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| running server at `/ca.pem` and `/ca.cer`. | |
| running plain HTTP server at `/ca.pem` and `/ca.cer`. |
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Just created kiesraad/abacus-documentatie#76, thanks for mentioning this! |
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What & why
Add a plaintext HTTP server that redirects to HTTPS and makes the CA certificates available on HTTP, so that the CA certificate can be imported into client browser trust stores. Resolves #3412.
We need to document that the fingerprint of the downloaded certificate should be verified against the fingerprint logged by the Abacus server, to prevent man-in-the-middle attacks.
How to test
From a terminal:
cargo run --features tls # and in another terminal curl -v localhost:8080 curl -v localhost:8080/ca.pem curl -v localhost:8080/ca.cer curl --cacert tls/ca.pem -v https://localhost:8443/ca.pem curl --cacert tls/ca.pem -v https://localhost:8443/ca.cerThen check that the redirect works and that the CA certificates are available.
Reviewer notes
None.