ExchangeCompletionListener is not invoked for HTTP/2 POST request on HTTP Upgrade based connection. So, AccessLogHandler or RequestDumpingHandler does not work.

ExchangeCompletionListener is triggered after both HttpServerExchange#terminateRequest() and HttpServerExchange#terminateResponse() are invoked. However, HttpServerExchange#terminateRequest() is never invoked for HTTP/2 POST request on HTTP Upgrade based connection.

This issue does not happen for HTTP/2 request through TLS ALPN, or HTTP/2 GET request on HTTP Upgrade based connection.

Because, HttpServerExchange#terminateRequest() is invoked at here for HTTP/2 request through TLS ALPN. Also, it's invoked at here for HTTP/2 GET request on HTTP Upgrade based connection.