• Nginx+uWSIG+Django+websocket的实现


    1.Django+websocket

    django-websocket
    dwebsocket
    django-websocket是旧版的,现在已经没有人维护,dwebsocket是新版的,推荐使用dwebsocket。

    python manage.py runserver --port 8000
    

    用这两个库,django用以上的命令启动的时候,可以正常建立websocket连接的
    但是如果django用uwsgi启动,会报错:handshake的时候返回400,即客服端不合法
    dwebsocket的README.md里面写着可以通过下面的修改来实现从uwsgi启动
    1.在settings.py增加WEBSOCKET_FACTORY_CLASS变量
    2.修改uwsgi的启动命令为:

    uwsgi --http :8000 --http-websockets --processes 1  --wsgi-file django_wsgi.py --async 30 --ugreen --http-timeout 300
    

    但是我试过之后失败了

    2.Django+uwsgi+websocket

    后面我发现uwsgi2.0已经提供了对websocket的支持
    uwsgi文档
    DEMO:

    def echo_once(request):
        import uwsgi
        uwsgi.websocket_handshake()   #与客户端建立连接 ,在uwsgi2.0中,这个函数不需要参数
        while True:
            msg = uwsgi.websocket_recv()  #阻塞,等待客户端发来的消息
            uwsgi.websocket_send(msg)     #发送消息到客服端
    

    所有的API:
    uwsgi.websocket_handshake([key, origin, proto])
    uwsgi.websocket_recv()
    uwsgi.websocket_send(msg)
    uwsgi.websocket_send_binary(msg) (added in 1.9.21 to support binary messages)
    uwsgi.websocket_recv_nb()
    uwsgi.websocket_send_from_sharedarea(id, pos) (added in 1.9.21, allows sending directly from a SharedArea – share memory pages between uWSGI components)
    uwsgi.websocket_send_binary_from_sharedarea(id, pos) (added in 1.9.21, allows sending directly from a SharedArea – share memory pages between uWSGI components)

    3.nginx的配置:

                location / {
                        uwsgi_pass 127.0.0.1:8000;
                        include  uwsgi_params;
                        proxy_http_version 1.1;
                        proxy_set_header Upgrade $http_upgrade;
                        proxy_set_header Connection "upgrade";
                }
    

    在nginx的server中加入proxy开头的三行配置

    4.调试用的python websocket客户端

    from websocket import create_connection
    ws = create_connection("ws://192.168.000.000:8000/echo_once") 
    print "Sending 'Hello, World'..."
    ws.send("Hello, World")
    print "Sent"
    print "Reeiving..."
    result = ws.recv()
    print "Received '%s'" % result
    ws.close()
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  • 原文地址:https://www.cnblogs.com/Xjng/p/4853080.html
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