انجین‌اکس؛ شب ۲۶: WebSocket و تبادل واقعی پیام

"$LAB_PYTHON" -m venv ~/nginx-lab/ws-venv
~/nginx-lab/ws-venv/bin/python -m pip install websockets
~/nginx-lab/ws-venv/bin/python -m pip freeze > ~/nginx-lab/ws-requirements.txt

import asyncio
from websockets.asyncio.server import serve
async def echo(ws):
    async for msg in ws:
        await ws.send(msg)
async def main():
    async with serve(echo, "127.0.0.1", 8765, origins=["https://app.nginx.test"]):
        await asyncio.get_running_loop().create_future()
asyncio.run(main())

map $http_upgrade $lab_connection {
    default upgrade;
    '' close;
}

location /ws/ {
    proxy_pass http://127.0.0.1:8765;
    proxy_http_version 1.1;
    include /etc/nginx/snippets/lab-proxy-headers.conf;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $lab_connection;
    proxy_read_timeout 60s;
}

const ws = new WebSocket("wss://app.nginx.test/ws/");
ws.onmessage = event => console.log(event.data);
ws.onopen = () => ws.send("nginx lab ping");