@Override
        public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
            responsePromise.tryFailure(cause);
        }
A handler that triggers the cleartext upgrade to HTTP/2 by sending an initial HTTP request.
thrift/thrift0.13/src/test/java/com/linecorp/armeria/server/thrift/AbstractTHttp2Client.java