为什么netty http2服务器总是使用奇数来表示streamId(Why netty http2 server always use odd number for streamId)

 我正在使用Netty来设置一个简单的http / 2服务器。 我将此示例用作http / 2服务器。 
 
 要测试此服务器，我使用的是netty示例客户端 。 
 
 我将客户端代码发送到服务器的客户端代码： 
 完整代码： http ： //netty.io/5.0/xref/io/netty/example/http2/client/package-summary.html 
 
    HttpResponseHandler responseHandler = initializer.responseHandler();
    int streamId = 3;
    HttpScheme scheme = SSL ? HttpScheme.HTTPS : HttpScheme.HTTP;
    AsciiString hostName = new AsciiString(HOST + ':' + PORT);
    System.out.println("Sending request(s)...");
    if (URL != null) {
        System.out.println("with url");

        // Create a simple GET request.
        FullHttpRequest request = new DefaultFullHttpRequest(HTTP_1_1, GET, URL);
        request.headers().add(HttpHeaderNames.HOST, hostName);
        request.headers().add(HttpConversionUtil.ExtensionHeaderNames.SCHEME.text(), scheme.name());
        request.headers().add(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.GZIP);
        request.headers().add(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.DEFLATE);
        responseHandler.put(streamId, channel.writeAndFlush(request), channel.newPromise());
        streamId += 2;


    }
 
 上面的代码适用于流ID 3,5等。 
 但是，当我将流ID更改为任何其他数字，如4,6,8等，上面的代码不起作用。 从服务器我仍然得到流ID为3,5,7等的消息。我无法在示例服务器中找到这些流ID的逻辑 

I am using Netty to setup a simple http/2 server. I am using this example as http/2 server.
 
To test this server, I am using netty example client.
 
My client code where I am sending the request to server:
 Complete code : http://netty.io/5.0/xref/io/netty/example/http2/client/package-summary.html 
 
    HttpResponseHandler responseHandler = initializer.responseHandler();
    int streamId = 3;
    HttpScheme scheme = SSL ? HttpScheme.HTTPS : HttpScheme.HTTP;
    AsciiString hostName = new AsciiString(HOST + ':' + PORT);
    System.out.println("Sending request(s)...");
    if (URL != null) {
        System.out.println("with url");

        // Create a simple GET request.
        FullHttpRequest request = new DefaultFullHttpRequest(HTTP_1_1, GET, URL);
        request.headers().add(HttpHeaderNames.HOST, hostName);
        request.headers().add(HttpConversionUtil.ExtensionHeaderNames.SCHEME.text(), scheme.name());
        request.headers().add(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.GZIP);
        request.headers().add(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.DEFLATE);
        responseHandler.put(streamId, channel.writeAndFlush(request), channel.newPromise());
        streamId += 2;


    }
 
Above code works fine with stream id 3,5 and so on.
 But when i change the stream id to any other number like 4,6,8 etc, above code doesn't work. From server I still get the messages for stream id 3,5,7 etc. I am unable to find the logic for these stream id inside example server

原文：https://stackoverflow.com/questions/43550116