在 HashLink 上使用套接字读取 HTTP 请求

Question

我正在尝试使用带有 HashLink (1.9.0) 的 haxe (4) 创建一个 HTTP 服务器，但套接字似乎工作得不太好。

import haxe.io.Error;
import sys.net.Host;
import sys.net.Socket;

class Main {
    static public function main() {

        var _aSocketDistant = new List<Socket>();

        var _oSocketMaster = new Socket();
        _oSocketMaster.bind( new Host( 'localhost' ), 8000);
        _oSocketMaster.setBlocking( false );
        _oSocketMaster.listen( 9999 );

        while(true) {

            // Accepting socket
            var oSocketDistant = _oSocketMaster.accept();
            if ( oSocketDistant != null ) {
                trace( 'opening : ' + oSocketDistant.peer() );
                oSocketDistant.setBlocking( false );
                _aSocketDistant.add( oSocketDistant );
            }

            // Trying to read from each socket 
            for ( oSocketDistant in _aSocketDistant ) {
                try {
                    trace( oSocketDistant.read() );
                } catch ( e :Dynamic ) {
                    if ( e != Error.Blocked )
                        throw e;
                }
            }

        }
    }
}

运行这段代码，然后使用 firefox 调用 http://localhost:8000/ 得到以下结果：

Main.hx:27: opening : {host : 127.0.0.1, port : 65154}

远程套接字从来没有任何消息要读取。它不应该发送请求吗？

Answer 1

问题似乎出在 read() 的使用上。好像是 not meant to be used on non-blocking sockets:

Your actual issue is that read() will read the whole data. On a blocking socket that would block until the connection is closed. On a non blocking socket that will always raise Blocking. You instead have to use input.readBytes which will return the number of bytes read, and then make sure you correctly manage your buffer data.

在这种情况下，使用 input.readLine() 可能是最简单的解决方案：

trace(oSocketDistant.input.readLine());

有了它，我可以按预期看到 HTTP 请求：

Main.hx:20: opening : {host : 127.0.0.1, port : 50231}
Main.hx:29: GET / HTTP/1.1
Main.hx:29: Host: localhost:8008
Main.hx:29: Connection: keep-alive
Main.hx:29: Upgrade-Insecure-Requests: 1
Main.hx:29: User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36
Main.hx:29: DNT: 1
Main.hx:29: Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3
Main.hx:29: Accept-Encoding: gzip, deflate, br
Main.hx:29: Accept-Language: de-DE,de;q=0.9,en-US;q=0.8,en;q=0.7
Main.hx:29: Cookie: Idea-369662de=0cbb3289-7f2c-4f82-a094-7409dba8cfb0
Main.hx:29:

在 HashLink 上使用套接字读取 HTTP 请求

Reading a HTTP request with sockets on HashLink

haxe

hashlink