Nginx serve websocket

Add ws.conf file under nginx conf.d directory

etc/nginx/conf.d/ws.conf

server {
listen 81;
listen [::]:81;
location /websocket/ {
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_pass “http://localhost:87";
}
location / {
}
error_page 404 /404.html;
location = /40x.html{
}
error_page 500 502 503 504 /50x.html;
location = /50x.html{
}
}

Restart nginx

systemctl restart nginx

now use python websockets to test connection

pip install websockets

server.py

import asyncio
import websockets
async def hello(websocket, path):
    name = await websocket.recv()
    print(f"< {name}")
    greeting = f"Hello {name}!"
    await websocket.send(greeting)
    print(f"> {greeting}")
start_server = websockets.serve(hello, "localhost", 87)
asyncio.get_event_loop().run_until_complete(start_server)
asyncio.get_event_loop().run_forever()

client.py

import asyncio
import websockets
async def hello():
    uri = "ws://localhost:87"
    async with websockets.connect(uri) as websocket:
        name = input("What’s your name? ")
        await websocket.send(name)
        print(f"> {name}")
        greeting = await websocket.recv()
        print(f"< {greeting}")
asyncio.get_event_loop().run_until_complete(hello())

python server.py

python client.py