//! SIP protocol library for the proxy engine.
//!
//! Provides SIP message parsing/serialization, dialog state management,
//! SDP handling, Digest authentication, and URI rewriting.
//! Ported from the TypeScript `ts/sip/` library.

pub mod message;
pub mod dialog;
pub mod helpers;
pub mod rewrite;

/// Network endpoint (address + port + optional negotiated codec).
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Endpoint {
    pub address: String,
    pub port: u16,
    /// First payload type from the SDP `m=audio` line (the preferred codec).
    pub codec_pt: Option<u8>,
}