720a8102e9* Implement client version negotiation in server initialization * Add test coverage for version negotiation * Make Version.supported and Version.negotiate() APIs internal to not create new surface area
28 lines
1.2 KiB
Swift
28 lines
1.2 KiB
Swift
import Foundation
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/// The Model Context Protocol uses string-based version identifiers
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/// following the format YYYY-MM-DD, to indicate
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/// the last date backwards incompatible changes were made.
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///
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/// - SeeAlso: https://spec.modelcontextprotocol.io/specification/2025-03-26/
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public enum Version {
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/// All protocol versions supported by this implementation, ordered from newest to oldest.
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static let supported: Set<String> = [
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"2025-03-26",
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"2024-11-05",
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]
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/// The latest protocol version supported by this implementation.
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public static let latest = supported.max()!
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/// Negotiates the protocol version based on the client's request and server's capabilities.
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/// - Parameter clientRequestedVersion: The protocol version requested by the client.
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/// - Returns: The negotiated protocol version. If the client's requested version is supported,
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/// that version is returned. Otherwise, the server's latest supported version is returned.
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static func negotiate(clientRequestedVersion: String) -> String {
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if supported.contains(clientRequestedVersion) {
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return clientRequestedVersion
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}
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return latest
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}
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}
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