Bring MockHttpServer and LoggingHttpProxy inline when it comes to building incoming http request object. LoggingHttpProxy filtered headers to only keep Content-Type. Mock-http-server did not do any filtering anymore. This also removes code duplication as common code is extracted in separate class.
Improve documentation for SimpleHttpResponseProvider.
Copy FullHttpRequest into HttpRequestImpl to avoid matching issues in HttpResponseProvider.
Add more debug logging so it becomes easier to bugfix unexpected requests/responses.
Change debug message in error message.
Add debug and error log messages which makes it easier to debug unexpected requests.
Small improvement to debug message.
Add fail-safe plugin configuration.