private FullHttpRequest buildHttpRequest(String url) {
        // Create a simple POST request with a body.
        EchoRequest request = EchoRequest.newBuilder().setGroup(Group.A).setName("xxx").build();
        FullHttpRequest httpRequest = new DefaultFullHttpRequest(HTTP_1_1, POST, url,
            wrappedBuffer(request.toByteArray()));
        HttpHeaders headers = httpRequest.headers();
        addToHeader(headers, HttpHeaderNames.HOST, "127.0.0.1");
        addToHeader(headers, HttpConversionUtil.ExtensionHeaderNames.SCHEME.text(), "HTTP");
        addToHeader(headers, HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.GZIP);
        addToHeader(headers, HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.DEFLATE);
        return httpRequest;
    }
@author <a href="mailto:zhanggeng.zg@antfin.com">GengZhang</a>
test/test-integration/src/test/java/com/alipay/sofa/rpc/transport/http/Http2ClearTextBadRequestTest.java