Django-channels disconnects right after sending a message

[Nikoleta Misheva]

When I send message the websocket disconnects. I am able to get the message, but I can't proceed further since disconnect is supposed to delete the room. I tested it with basic prints after every statement and it disconnects right after the receiver gets the message because everything that is in ws_receive is printed after it disconnects

My consumer:

@channel_session_user
def ws_receive(message):
 username = message.user.username
 text = json.loads(message['text']).get('text')
 # Use my algorithm here
 score = score_argument.get_rating(text)
 # find the room with our users
 # print(type(username))
 # print(username)
 current_room = get_object_or_404(PairUsers, Q(username_a=username) | Q(username_b=username))

 # current_room = PairUsers.objects.filter(Q(username_a=username) | Q(username_b=username)).first()

 # check which user you got and send the message to the other
 if current_room.username_b == username:
 current_room.score_b = score
 other_channel = Channel(current_room.reply_channel_a)
 message.reply_channel.send({'text': json.dumps({
 "message": text,
 "user": username, }),
 })
 message.reply_channel.send({'text': json.dumps({
 "score": score,
 "user": username, }),
 })
 other_channel.send({'text': json.dumps({
 "message": text,
 "user": username, }),
 })
 other_channel.send({'text': json.dumps({
 "score": score,
 "user": username, }),
 })
 else:
 current_room.score_a = score
 other_channel = Channel(current_room.reply_channel_b)
 message.reply_channel.send({'text': json.dumps({
 "message": text,
 "user": username, }),
 })
 message.reply_channel.send({'text': json.dumps({
 "score": score,
 "user": username, }),
 })
 other_channel.send({'text': json.dumps({
 "message": text,
 "user": username, }),
 })
 other_channel.send({'text': json.dumps({
 "score": score,
 "user": username, }),
 })
The JS:

$(function () {
 // Correctly decide between ws:// and wss://
 var ws_scheme = window.location.protocol == "https:" ? "wss" : "ws";
 var ws_path = ws_scheme + '://' + window.location.host + window.location.pathname;
 console.log("Connecting to " + ws_path);
 var socket = new ReconnectingWebSocket(ws_path);

 socket.onmessage = function(message){
 var data = JSON.parse(message.data);
 if(!data.score){
 var element = $([
 "<tr>",
 "<td>" + data.message + "</td>",
 "<td>",
 "<div class='center-block'>" + data.user + "</div>",
 "</td>",
 "</tr>"
 ].join("\n"));
 $("#chat_table tbody").append(element);
 }
 else {
 var element = $([
 "<tr>",
 "<td>" + data.user + "'s score is:" + data.score + "</td>",
 "</tr>"
 ].join("\n"));
 $("#chat_table tbody").append(element);

 }
 }

 $('#arg_form').on('submit',function () {
 socket.send(JSON.stringify({
 "text": $('#argument').val()
 }))})

 });
What might be the cause?

[Andrew Godwin]

How does it disconnect? What WebSocket close code do you get? (You'll need to add JS to log it) What prints on the Python console?

Andrew

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[Nikoleta Misheva]

I don't know how to get the close code. It disconnects right after you hit the send button but it manages to send the message, I had prints and the message was right and etc but was always after disconnect. My disconnect function basically deletes the room. And python's console logs:

[2017/02/21 21:42:50] WebSocket DISCONNECT /play [127.0.0.1:65273]
[2017/02/21 21:42:50] WebSocket HANDSHAKING /play [127.0.0.1:65282]

It reconnects.

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[Andrew Godwin]

I'm afraid I don't really know what's going on then - the logs don't reveal very much. I'd try reducing it down to simpler code until you can replicate it in only a few lines and work from there.

Andrew

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[Nikoleta Misheva]

How do I log an WebsocketCloseExeption it might deliver more useful information?

[Nikoleta Misheva]

I tried  the simplest example and it works fine and does not disconnect. 

def websocket_receive(message):
 text = message.content.get('text')
 if text:
 message.reply_channel.send({"text": "You said: {}".format(text)})

And using the JS console 

socket = new WebSocket("ws://" + window.location.host + "/chat/");
socket.onmessage = function(e) {
    alert(e.data);
}
socket.onopen = function() {
    socket.send("hello world");
}

сряда, 22 февруари 2017 г., 3:08:09 UTC+2, Andrew Godwin написа:

[Andrew Godwin]

Then you need to add more and more back until it does disconnect and you should be able to find the line that's doing it!

Andrew

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[Nikoleta Misheva]

I tried it and it works fine, but as soon as I try to hang this to a button it disconnects, so this line 

$('#arg_form').on('submit',function ()

is the problem, if I send message without hanging it to a button submit function it is ok with or without JSON.stringify