fix: preserve internal error message when decoding from a peer#249
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systemblueio wants to merge 1 commit into
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fix: preserve internal error message when decoding from a peer#249systemblueio wants to merge 1 commit into
systemblueio wants to merge 1 commit into
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MCPError's decoder dropped the message for code -32603 by passing nil as
the detail fallback, while every other standard JSON-RPC error case falls
back to the message. A peer sending {"code":-32603,"message":"..."} with
no data.detail decoded to .internalError(nil), losing the message. Use the
message fallback so internalError matches the other cases.
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What was wrong
MCPError's decoder dropped the message for-32603. That case passednilas the detail fallback, whileparseError,invalidRequest,methodNotFound, andinvalidParamsall fall back to themessage. So a peer sending{"code":-32603,"message":"..."}with nodata.detaildecoded to.internalError(nil), losing the message that the other standard errors keep.Fix
One line:
-32603now usesunwrapDetail(message), matching the other standard JSON-RPC error cases.Verification
Added a decode test in
ResponseTeststhat fails onmainand passes with the change. Full suite green (swift test, 552 tests).