Apply suggestions from code review

Co-authored-by: Marco Ebert <marco_ebert@icloud.com>
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Stepan Paksashvili 2024-07-01 12:14:04 +03:00 committed by GitHub
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NGINX 1.25 base image NGINX 1.25 base image
**Don't use in production!!!**
### HTTP/3 Support ### HTTP/3 Support
**!!! HTTP/3 support is experimental and under development** **HTTP/3 support is experimental and under development**
[HTTP/3](https://datatracker.ietf.org/doc/html/rfc9114) \ [HTTP/3](https://datatracker.ietf.org/doc/html/rfc9114)\
[QUIC](https://datatracker.ietf.org/doc/html/rfc9000) [QUIC](https://datatracker.ietf.org/doc/html/rfc9000)
[According to the documentation, NGINX 1.25.0 or higher supports HTTP/3:](https://nginx.org/en/docs/quic.html) [According to the documentation, NGINX 1.25.0 or higher supports HTTP/3:](https://nginx.org/en/docs/quic.html)
> Support for QUIC and HTTP/3 protocols is available since 1.25.0. > Support for QUIC and HTTP/3 protocols is available since 1.25.0.
But this requires adding a new flag during the building: But this requires adding a new flag during the build:
> When configuring nginx, it is possible to enable QUIC and HTTP/3 using the --with-http_v3_module configuration parameter. > When configuring nginx, it is possible to enable QUIC and HTTP/3 using the --with-http_v3_module configuration parameter.
We have added this flag, but it is not enough to use HTTP/3 in ingress-nginx, this is the first step. We have added this flag, but it is not enough to use HTTP/3 in ingress-nginx, this is the first step.
The next steps will be: The next steps will be:
1. **Waiting for OpenSSL 3.4.** \
The main problem that we still use OpenSSL(3.x), and it does not support the important mechanism of TLS 1.3 - [early_data](https://datatracker.ietf.org/doc/html/rfc8446#section-2.3): 1. **Waiting for OpenSSL 3.4.**\
The main problem is, that we still use OpenSSL (3.x) and it does not support the important mechanism of TLS 1.3 - [early_data](https://datatracker.ietf.org/doc/html/rfc8446#section-2.3):
> Otherwise, the OpenSSL compatibility layer will be used that does not support early data. > Otherwise, the OpenSSL compatibility layer will be used that does not support early data.
[And although another part of the documentation says that the directive is supported with OpenSSL:](https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_early_data) [And although another part of the documentation says that the directive is supported with OpenSSL:](https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_early_data)
> The directive is supported when using OpenSSL 1.1.1 or higher. > The directive is supported when using OpenSSL 1.1.1 or higher.
But this is incomplete support, because OpenSSL does not support this feature, and [it has only client side:](https://github.com/openssl/openssl) But this is incomplete support, because OpenSSL does not support this feature, and [it has only client side support:](https://github.com/openssl/openssl)
> ... the QUIC (currently client side only) version 1 protocol > ... the QUIC (currently client side only) version 1 protocol
[and also there are some issues even with client side](https://github.com/openssl/openssl/discussions/23339) [and also there are some issues even with client side](https://github.com/openssl/openssl/discussions/23339)
Due to this, we currently have incomplete HTTP/3 support, without important security and performance features. \ Due to this, we currently have incomplete HTTP/3 support, without important security and performance features.\
But the good news is that [OpenSSL plans to add server-side support in 3.4](https://www.openssl.org/roadmap.html): But the good news is that [OpenSSL plans to add server-side support in 3.4](https://www.openssl.org/roadmap.html):
> Server-side QUIC support > Server-side QUIC support
[Options for using instead of OpenSSL(HAProxy Documentation)](https://github.com/haproxy/wiki/wiki/SSL-Libraries-Support-Status#tldr) [Options for using instead of OpenSSL(HAProxy Documentation)](https://github.com/haproxy/wiki/wiki/SSL-Libraries-Support-Status#tldr)
2. **Adding [parameters](https://nginx.org/en/docs/http/ngx_http_v3_module.html) to the configmap to configure HTTP/3 and quic(enableHTTP3, enableHTTP/0.9, maxCurrentStream, and so on).** 2. **Adding [parameters](https://nginx.org/en/docs/http/ngx_http_v3_module.html) to the configmap to configure HTTP/3 and quic(enableHTTP3, enableHTTP/0.9, maxCurrentStream, and so on).**
3. **Adding options to the nginx config template(`listen 443 quic` to server blocks and `add_header Alt-Svc 'h3=":8443"; ma=86400';` to location blocks).** 3. **Adding options to the nginx config template(`listen 443 quic` to server blocks and `add_header Alt-Svc 'h3=":8443"; ma=86400';` to location blocks).**
4. **Opening the https port for UDP in the container(because QUIC uses UDP).** 4. **Opening the https port for UDP in the container(because QUIC uses UDP).**
5. **Adding tests.** 5. **Adding tests.**