Django的通道不能实时输出日志

问题描述：

def ws_receive(message): 
    text = message.content['text'] 
    request = json.loads(text) 
    cmd = request['cmd']  

    results = run(cmd) 
    print(cmd) 
    for result in results: 
     Group(GROUP_NAME).send({'text':result.decode('utf-8')}) 
     print(result)

cmd就像ping -c 4 www.google.com;

终端结果是：

[2017/09/24 07:24:44] WebSocket HANDSHAKING/[127.0.0.1:59285] 
[2017/09/24 07:24:44] WebSocket CONNECT/[127.0.0.1:59285] 
[2017/09/24 07:24:44] HTTP GET /api/hosts/?status=used 200 [0.07, 127.0.0.1:59247] 
ping -c 4 www.google.com 
2017-09-24 07:24:58.512885 b'PING www.google.com (74.125.23.103): 56 data bytes\n' 
2017-09-24 07:24:58.513127 b'64 bytes from 74.125.23.103: icmp_seq=0 ttl=45 time=138.542 ms\n' 
2017-09-24 07:24:59.517881 b'64 bytes from 74.125.23.103: icmp_seq=1 ttl=45 time=142.954 ms\n' 
2017-09-24 07:25:00.522698 b'64 bytes from 74.125.23.103: icmp_seq=2 ttl=45 time=144.568 ms\n' 
2017-09-24 07:25:01.562285 b'64 bytes from 74.125.23.103: icmp_seq=3 ttl=45 time=180.163 ms\n' 
2017-09-24 07:25:01.562400 b'\n' 
2017-09-24 07:25:01.562459 b'--- www.google.com ping statistics ---\n' 
2017-09-24 07:25:01.562517 b'4 packets transmitted, 4 packets received, 0.0% packet loss\n' 
2017-09-24 07:25:01.562586 b'round-trip min/avg/max/stddev = 138.542/151.557/180.163/16.662 ms\n'

但是，浏览器的网页套接字调试信息是： browser ws debug

所以，我'确保信道是执行该命令，直到结束发送的消息，但我希望实时发送消息。

我想实时打印日志到浏览器，使用'ping'或'tail -f' –

答

尝试立即发送：

Group(GROUP_NAME).send({'text':result.decode('utf-8')}, immediately=True)

这背后的原因是，你的WebSocket的消费函数中。当你在里面时，Group.send调用不会被执行，但是只有当你离开函数时才会被批量采集和执行。使用immediately=True将覆盖此行为。

Django的通道不能实时输出日志

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