Python websocket create connection

Question

I have this server

https://github.com/crossbario/autobahn-python/blob/master/examples/twisted/websocket/echo_tls/server.py

And I want to connect to the server with this code:

ws = create_connection("wss://127.0.0.1:9000")

What options do I need to add to create_connection? Adding sslopt={"cert_reqs": ssl.CERT_NONE} does not work:

websocket._exceptions.WebSocketBadStatusException: Handshake status 400

Yes, websocket._exceptions.WebSocketBadStatusException: Handshake status 400 — Tasos
– Tasos, Commented Aug 25, 2017 at 7:10
Which websocket package are you using? If it's websocket, that seems seriously out of date. Try websockets or websocket-client instead. — Thomas
– Thomas, Commented Aug 25, 2017 at 7:11
I am using websocket-client, installed with pip install websocket-client on python 3.6 — Tasos
– Tasos, Commented Aug 25, 2017 at 7:13

karelv · Accepted Answer · 2019-01-09 11:31:46Z

6

This works

import asyncio
import websockets
import ssl

async def hello():
    async with websockets.connect('wss://127.0.0.1:9000',ssl=ssl.SSLContext(protocol=ssl.PROTOCOL_TLS)) as websocket:
        data = 'hi'
        await websocket.send(data)
        print("> {}".format(data))

        response = await websocket.recv()
        print("< {}".format(response))

asyncio.get_event_loop().run_until_complete(hello())

edited Jan 9, 2019 at 11:31

karelv

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answered Aug 25, 2017 at 7:46

Tasos

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1 Comment

Václav Over a year ago

This just saved me a few days of fighting websockets while connecting to them via proxy. Thx.

karelv · Accepted Answer · 2019-01-09 10:12:06Z

1

For me the option from the question seems to work:

from websocket import create_connection
import ssl

ws = create_connection("wss://echo.websocket.org", sslopt={"cert_reqs": ssl.CERT_NONE})

ws.send("python hello!")
print (ws.recv())
ws.close()

See also here: https://github.com/websocket-client/websocket-client#faq

Note: I'm using win7 with python 3.6.5 with following packages installed(pip):

simple-websocket-server==0.4.0
websocket-client==0.53.0
websockets==6.0

answered Jan 9, 2019 at 10:12

karelv

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