fix: accept header accessor function in ServerTransportSecurityValidator#982
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Replace Map<String, List<String>> parameter with Function<String, List<String>> in validateHeaders(), allowing callers to pass a header accessor instead of extracting all headers upfront. This is more efficient (only requested headers are looked up) and delegates case-insensitive header matching to the underlying request implementation (e.g. HttpServletRequest.getHeaders). - Update DefaultServerTransportSecurityValidator to use the accessor directly for Origin and Host headers - Update all three servlet transport providers to pass name -> Collections.list(request.getHeaders(name)) - Remove HttpServletRequestUtils (no longer needed) - Update unit tests to use accessor-based API Closes modelcontextprotocol#870
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The proposed changed would be breaking. The original |
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Summary
Map<String, List<String>>parameter withFunction<String, List<String>>inServerTransportSecurityValidator.validateHeaders(), as proposed inServerTransportSecurityValidatoraccepts an accessor function for header #870HttpServletRequest.getHeadersis case-insensitive per the Servlet spec)HttpServletRequestUtilsutility class (no longer needed)Changes
ServerTransportSecurityValidator—validateHeaders(Function<String, List<String>> headerAccessor)DefaultServerTransportSecurityValidator— directly queriesOriginandHostvia accessor instead of iterating all headersname -> Collections.list(request.getHeaders(name))instead ofextractHeaders(request)Test plan
DefaultServerTransportSecurityValidatorTestspassServerTransportSecurityIntegrationTestspass (1 pre-existing flaky retry onmessageOriginNotAllowed)Closes #870