Bug: micropython-lib/python-ecosys /aiohttp "MQTT over Websocket"

[jomasnash]

There is a bug in aiohttp. The problem is if you want to supply a custom header in a ClientSession that connects to a websocket, the header is ignored.

for example:

headers = {"Sec-WebSocket-Protocol":"mqtt"}
async with aiohttp.ClientSession(headers=headers).ws_connect(url, ssl=sslctx) as ws:

Since the first line in "async def handshake(self, uri, ssl, req):" is "headers = {}", the custom header is lost.

I found this bug when developing a asyncio "MQTT over Websocket" client. I could only connect to the hivemq broker.
All other "free online" brokers (for example "ws://test.mosquitto.org:8080") refused to connect because of missing header entries.

I have created an issue for this, see: micropython/micropython-lib#940

[bidrohini]

I hope they will fix it soon.

[jomasnash]

See my update in micropython/micropython-lib#940