//! MCP Protocol types (version 2025-11-25)
mod messages;
mod types;
pub use messages::*;
pub use types::*;
/// MCP Protocol version (latest)
pub const PROTOCOL_VERSION: &str = "2025-11-25";
/// All supported MCP Protocol versions (newest first for negotiation priority)
pub const SUPPORTED_VERSIONS: &[&str] = &[
"2025-11-25",
"2025-06-18",
"2025-03-26",
"2024-11-05",
"2024-10-07",
];
/// Negotiate the best protocol version between client and server
/// Returns the highest version supported by both parties
#[must_use]
pub fn negotiate_version(client_version: &str) -> &'static str {
// If client requests a version we support, use it
for &version in SUPPORTED_VERSIONS {
if version == client_version {
return version;
}
}
// Fallback to latest version (client should handle incompatibility)
PROTOCOL_VERSION
}
