fix: return 405 for wrong method, scope CORS allowed methods#3
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When a request targets a valid path but uses an unsupported HTTP method, the server now returns 405 with an Allow header listing the actual methods registered for that path, instead of returning 404. The Access-Control-Allow-Methods CORS header now reflects only the methods registered for the requested path (on both preflight and 405 responses), rather than advertising all methods globally. Closes #2
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Summary
Fixes #2 - two issues with HTTP method handling:
405 Method Not Allowedwith anAllowheader listing the registered methods, instead of404 Not Found.Access-Control-Allow-Methodsheader now reflects only the methods actually registered for the requested path (on both preflight and 405 responses), rather than hardcoding all methods globally.Test plan
bustedpasses (3 new tests formethods_for_path)luacheck .andstylua --check .passPUT /heartbeatreturns 405 withAllow: GET, OPTIONSwhen only GET is registeredOPTIONS /heartbeatpreflight returnsAccess-Control-Allow-Methods: GET, OPTIONSGET /nonexistentstill returns 404router.all) continue to match all methods