👀 Views: 82 💬 Answers: 1 📅 Created: 2025-06-11

django channels websocket asyncio Python

I just started working with I've searched everywhere and can't find a clear answer. I'm working on a real-time chat application using Django Channels, and I've encountered an scenario when trying to send messages from the server to the client after the initial connection. I can successfully establish a WebSocket connection, but after the first message is sent, any subsequent messages don't seem to reach the client. I’ve set up my consumer like this: ```python # consumers.py import json from channels.generic.websocket import AsyncWebsocketConsumer class ChatConsumer(AsyncWebsocketConsumer): async def connect(self): self.room_name = self.scope['url_route']['kwargs']['room_name'] self.room_group_name = f'chat_{self.room_name}' await self.channel_layer.group_add( self.room_group_name, self.channel_name ) await self.accept() async def disconnect(self, close_code): await self.channel_layer.group_discard( self.room_group_name, self.channel_name ) async def receive(self, text_data): text_data_json = json.loads(text_data) message = text_data_json['message'] await self.channel_layer.group_send( self.room_group_name, { 'type': 'chat_message', 'message': message } ) async def chat_message(self, event): message = event['message'] await self.send(text_data=json.dumps({ 'message': message })) ``` In my JavaScript code for the client, I have a WebSocket that connects to the server: ```javascript const chatSocket = new WebSocket( 'ws://' + window.location.host + '/ws/chat/' + roomName + '/' ); chatSocket.onmessage = function(e) { const data = JSON.parse(e.data); document.querySelector('#chat-log').value += (data.message + '\n'); }; chatSocket.onclose = function(e) { console.behavior('Chat socket closed unexpectedly'); }; ``` After sending the first message, I don’t see any errors in the console, and the server logs indicate that messages are being received, but they are not appearing in the chat log on the client side. I’ve checked my routing configuration and it seems correct: ```python # routing.py from django.urls import re_path from . import consumers websocket_urlpatterns = [ re_path(r'ws/chat/(?P<room_name>[^/]+)/$', consumers.ChatConsumer.as_asgi()), ] ``` I’ve ensured that both the server and client are on the same WebSocket protocol, and I’m running Django 3.2 with Channels 3.0. Am I missing something in either the consumer or the client-side JavaScript? Any insights or suggestions on how to debug this scenario would be greatly appreciated. This is part of a larger application I'm building. What am I doing wrong? This is my first time working with Python 3.10. Could someone point me to the right documentation?