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Fix/decode tool call (#36)

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* Adding unit test

* Decode entire request to strongly typed Method call. This allows NotRequired parameters to properly decode from null, which wouldn't be possible when decoding from the 'null' JSON encoding directly.
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Adam Wulf 2025-03-31 07:34:33 -05:00 • committed by GitHub
commit 19857af5bf
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1 changed files with 38 additions and 6 deletions
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7
Sources/MCP/Base/Messages.swift
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@ -161,12 +161,11 @@ final class TypedRequestHandler<M: Method>: RequestHandlerBox, @unchecked Sendab
let decoder = JSONDecoder()
// Create a concrete request from the type-erased one
let data = try encoder.encode(request.params)
let params = try decoder.decode(M.Parameters.self, from: data)
let typedRequest = Request<M>(id: request.id, method: M.name, params: params)
let data = try encoder.encode(request)
let request = try decoder.decode(Request<M>.self, from: data)
// Handle with concrete type
let response = try await _handle(typedRequest)
let response = try await _handle(request)
// Convert result to AnyMethod response
switch response.result {