TLS handshake rate limit adjustment does not work for rustls 0.22 & 0.23

[mstyura]

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Expected Behavior

HttpServer::method.max_connection_rate should allow to adjust TLS handshakes per second as suggested by documentation when used with any version of rustls or openssl.

Current Behavior

When used with rustls 0.22 or 0.23 due to conditional compilation part of code to adjust handshake per seconds is ingored.

Possible Solution

Will be provided as pull request.

Steps to Reproduce (for bugs)

1. Receive > 256 new TLS connections per second per worker.

Context

In case of incoming TLS handshakes exceed default limit of 256 per second service to start accepting connection slower with part of the connections reset at TCP level.

Your Environment

• Rust Version (I.e, output of rustc -V): rustc 1.79.0 (129f3b996 2024-06-10)
• Actix Web Version: actix-web 4.7.0