在HashLink上使用套接字读取HTTP请求

时间:2019-04-06 17:30:19

标签: haxe hashlink

我正在尝试使用带有HashLink(1.9.0)的haxe(4)和套接字的HTTP服务器,效果似乎不太好。

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/,可以得到以下信息:

  

Main.hx:27:打开:{host:127.0.0.1,端口:65154}

远程套接字永远不会读取任何消息。 它不应该发送请求吗?

1 个答案:

答案 0 :(得分:2)

问题似乎在于使用read()。看来这是not meant to be used on non-blocking sockets

  

您的实际问题是read()将读取整个数据。在将阻塞直到关闭连接的阻塞套接字上。在非阻塞套接字上,它将始终提高Blocking。相反,您必须使用input.readBytes来返回读取的字节数,然后确保正确管理缓冲区数据。

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());

这样,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: