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feat: standardize resource-not-found error code (SEP-2164) (#899)

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* feat: implement SEP-2164 resource not found errors

* test: update protocol version utility expectations

* feat: gate not-found code at server boundary

---------

Co-authored-by: Michael Neale <michael.neale@gmail.com>
This commit is contained in:
Dale Seo 2026-06-16 21:55:25 -04:00 • committed by GitHub
commit 95a8e961e0
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1 changed files with 126 additions and 4 deletions
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6
crates/rmcp/src/model.rs
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@ -152,6 +152,7 @@ impl std::fmt::Display for ProtocolVersion {
}
impl ProtocolVersion {
pub const V_2026_07_28: Self = Self(Cow::Borrowed("2026-07-28"));
pub const V_2025_11_25: Self = Self(Cow::Borrowed("2025-11-25"));
pub const V_2025_06_18: Self = Self(Cow::Borrowed("2025-06-18"));
pub const V_2025_03_26: Self = Self(Cow::Borrowed("2025-03-26"));
@ -164,6 +165,7 @@ impl ProtocolVersion {
Self::V_2025_03_26,
Self::V_2025_06_18,
Self::V_2025_11_25,
Self::V_2026_07_28,
];
/// Returns the string representation of this protocol version.
@ -193,6 +195,7 @@ impl<'de> Deserialize<'de> for ProtocolVersion {
"2025-03-26" => return Ok(ProtocolVersion::V_2025_03_26),
"2025-06-18" => return Ok(ProtocolVersion::V_2025_06_18),
"2025-11-25" => return Ok(ProtocolVersion::V_2025_11_25),
"2026-07-28" => return Ok(ProtocolVersion::V_2026_07_28),
_ => {}
}
Ok(ProtocolVersion(Cow::Owned(s)))
@ -541,9 +544,12 @@ impl ErrorData {
data,
}
}
/// Resource-not-found error (`-32002`). The server upgrades this to `INVALID_PARAMS`
/// (`-32602`) for peers negotiating protocol `2026-07-28` or newer (SEP-2164).
pub fn resource_not_found(message: impl Into<Cow<'static, str>>, data: Option<Value>) -> Self {
Self::new(ErrorCode::RESOURCE_NOT_FOUND, message, data)
}
pub fn parse_error(message: impl Into<Cow<'static, str>>, data: Option<Value>) -> Self {
Self::new(ErrorCode::PARSE_ERROR, message, data)
}