Add macOS sockaddr compatibility (sin_len/sin6_len fields)

[AliRezaBeigy]

Adds sin_len and sin6_len fields to sockaddr_in and sockaddr_in6 structs for macOS compatibility. These fields are required on macOS but not on other platforms.

Changes:

• Add sin_len/sin6_len fields in runtime.rs and udp_fallback.rs
• Use conditional compilation to only apply on macOS

I test and build the changes in https://github.com/AliRezaBeigy/slipstream-rust-deploy

Addresses #14.

[AliRezaBeigy]

^ @Mygod thanks for your time.

[Copilot]

Pull request overview

This pull request adds macOS compatibility for sockaddr structures by including the sin_len and sin6_len length fields required by BSD-based systems. These fields must be the first members in sockaddr_in and sockaddr_in6 structures on BSD platforms.

Changes:

• Added conditional sin_len field to sockaddr_in struct initialization
• Added conditional sin6_len field to sockaddr_in6 struct initializations
• Used #[cfg(target_os = "macos")] to conditionally compile these fields

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
crates/slipstream-ffi/src/runtime.rs	Added sin_len and sin6_len fields to sockaddr struct initializations in socket_addr_to_storage function
crates/slipstream-server/src/udp_fallback.rs	Added sin6_len field to sockaddr_in6 initialization in dummy_sockaddr_storage function

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[Mygod]

@codex review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. You're on a roll.

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

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