Why doesn't WebSocket.onmessage work?

Question

Django

I am using django-channels to establish a socket connection. I did everything as indicated in gettings started.
Messages from the client to the server arrive normally, but they are sent back, they do not reach (socket.onmessage does not work). What am I doing wrong?

def ws_message(message):
    action = json.loads(message.content['text'])['action']
    if action == "newchat":
        response = new_room(message)
        message.reply_channel.send(response)
        "asd"
    elif action == 'message':
        response = new_message(message)
        Group("room-%s" % json.loads(message.content['text'])['room']).send(response)
        "asd"
    elif action == 'history':
        response = history(message)
        message.reply_channel.send(response)
        "asd"

customer:

socket = new WebSocket("ws://localhost:8000/chat");

socket.onopen = function(e) {
    socket.onmessage = function (e) {
        alert(e.data);
        var jsn = JSON.parse(e.data);
        if (jsn['action'] == 'message') {
            messageReceived(jsn['message'], jsn['room'], true);
        } else if (jsn['action'] == 'history') {
            for (var j = jsn['messages'].length - 1; j >= 0; --j) {
                messageReceived(jsn['messages'][j], jsn['room'], false);
            }
            var hist = $('#' + jsn['messages'][0]['chat'] + ' > .chat-history');
            hist.animate({scrollTop: hist.prop("scrollHeight")}, 1000);
        } else if (jsn['action'] == 'newchat') {
            if (jsn['status'] == 'ok') {
                var new_elem = '<div id="chat' + jsn['room'] + '" class="sidebar-name"><a href="javascript:register_popup(\'' + jsn['room'] + '\', \'' + jsn['name'] + '\');"><img width="30" height="30" src=""><span>' + jsn['name'] + '</span></a></div>';
                $('.chat-sidebar').append(new_elem);
                $('#chat' + jsn['room'] + ' a').click();
            } else {
                $('#chat' + jsn['room'] + ' a').click();
            }
        }
    };
};

Answer 1

At least you have socket.onmessage in socket.onopen, but this should not be, write it separately - below, after socket.onopen