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+**Title:** Fix HTTP status 405 </br>
+**Date:** 2021-12-09 </br>
+
+# Summary
+Stop returning HTTP Status 405 or ensure that RFC 2616 is followed.
+
+# Description
+When using HTTP GET for a POST endpoint or vice versa, HTTP status code 405 is
+currently returned by sigsum-log-go. According to RFC 2616, an Allow header MUST
+be included in the response.  This issue requires figuring out what
+sigsum-log-go should do: not return HTTP Status 405 or adhere to RFC 2616?
+
+Extract from RFC 2616:
+```
+10.4.6 405 Method Not Allowed
+
+The method specified in the Request-Line is not allowed for the resource
+identified by the Request-URI. The response MUST include an Allow header
+containing a list of valid methods for the requested resource.
+```
+
+To find the relevant parts in the sigsum-log-go code, see the output of
+
+	git grep StatusMethodNotAllowed