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Follow-ups to #1610: de-draft 2026-07-28 terminology, renumber error codes, ProtocolVersion floor (#1671)

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Stephen Halter 2026-06-25 14:07:52 -07:00 • committed by GitHub
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src/ModelContextProtocol.Core/UnsupportedProtocolVersionException.cs
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@ -9,10 +9,10 @@ namespace ModelContextProtocol;
/// Represents an exception used to signal that a request's declared protocol version is not supported by the server.
/// </summary>
/// <remarks>
/// Introduced by the draft protocol revision (SEP-2575). Servers throw this exception when they cannot process
/// Introduced by the 2026-07-28 protocol revision (SEP-2575). Servers throw this exception when they cannot process
/// a request because the per-request <c>_meta/io.modelcontextprotocol/protocolVersion</c> (or the equivalent
/// transport-level header) names a version the server does not implement. The exception is converted to a
/// JSON-RPC error response with code <see cref="McpErrorCode.UnsupportedProtocolVersion"/> (<c>-32004</c>) and
/// JSON-RPC error response with code <see cref="McpErrorCode.UnsupportedProtocolVersion"/> (<c>-32022</c>) and
/// a <see cref="UnsupportedProtocolVersionErrorData"/> payload.
/// </remarks>
public sealed class UnsupportedProtocolVersionException : McpProtocolException