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fix: honor supported_protocol_versions when negotiating initialize (#1093)

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Dale Seo 2026-07-30 15:44:37 -04:00 • committed by GitHub
commit d272389fd4
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1 changed files with 246 additions and 16 deletions
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11
crates/rmcp/src/handler/server.rs
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@ -300,6 +300,10 @@ impl<H: ServerHandler> Service<RoleServer> for H {
fn get_info(&self) -> <RoleServer as ServiceRole>::Info {
self.get_info()
}
fn supported_protocol_versions(&self) -> Cow<'static, [ProtocolVersion]> {
ServerHandler::supported_protocol_versions(self)
}
}
macro_rules! server_handler_methods {
@ -321,10 +325,17 @@ macro_rules! server_handler_methods {
info.protocol_version = negotiate_protocol_version(
&request.protocol_version,
info.protocol_version,
&self.supported_protocol_versions(),
);
std::future::ready(Ok(info))
}
/// Return the protocol versions supported by this server.
///
/// Defaults to every version this SDK knows. Override it to narrow the
/// set to the revisions the server actually implements: the returned
/// list is advertised by [`Self::discover`], bounds what `initialize`
/// negotiation may agree to, and is what per-request versions are
/// validated against.
fn supported_protocol_versions(&self) -> Cow<'static, [ProtocolVersion]> {
Cow::Borrowed(ProtocolVersion::KNOWN_VERSIONS)
}