Any pointers to help? Streaming issue (error: websockets.exceptions.NegotiationError: Unsupported extension: name = permessage-deflate, params = [])

[gmstuff]

Hi all

I know it has to be me, but I cant find out what I did wrong! Can anybody point me in the right direction please ?

Thanks in advance!!

Short version : When running the code as per Alex's streaming video on youtube i get an error "websockets.exceptions.NegotiationError: Unsupported extension: name = permessage-deflate, params = []"

I got to that error via a 'fix' ?? of an earlier error: Both are documented below

My environment on the new Virtual Machine:

• VS Code 1.60.1
• Python 3.8.2 32bit (on Windows 10) (on my initial machine I was using Python 3.9.0 64bit)

After hours of googling and trying different mods I then tried to a 'clean' environment - Built out a virtual machine Windows 10, fresh install of Visual Studio Code, fresh install of Python 3.8.2 (Same as the version in the video) - still getting errors (Error #2 in second block below)

Any pointers at all would be great!! Thanks again!

Initial error before the mod suggested in discussion 183 (#183)
Which basically said put the line below under the line "import websockets" in the file : td/stream.py
from websockets import client

After doing the above I got past that error, but was faced with the second error (Which is where I am stuck at)

First Error: (appearing to be resolved by github discussion doc 183)
This is all the errors PRIOR to adding this to the td/stream.py file "from websockets import client":
PS C:\VS_Code\TD_API> & C:/Users/gerar/AppData/Local/Programs/Python/Python38-32/python.exe c:/VS_Code/TD_API/Using_Stream_Client.py
Traceback (most recent call last):
File "c:/VS_Code/TD_API/Using_Stream_Client.py", line 23, in
td_stream_client.stream(True)
File "C:\Users\gerar\AppData\Local\Programs\Python\Python38-32\lib\site-packages\td\stream.py", line 539, in stream
self.loop.run_until_complete(self._connect())
File "C:\Users\gerar\AppData\Local\Programs\Python\Python38-32\lib\asyncio\base_events.py", line 616, in run_until_complete
return future.result()
File "C:\Users\gerar\AppData\Local\Programs\Python\Python38-32\lib\site-packages\td\stream.py", line 636, in _connect
self.connection = await websockets.client.connect(self.websocket_url)
File "C:\Users\gerar\AppData\Local\Programs\Python\Python38-32\lib\site-packages\websockets\imports.py", line 92, in getattr
raise AttributeError(f"module {package!r} has no attribute {name!r}")
AttributeError: module 'websockets' has no attribute 'client'
PS C:\VS_Code\TD_API>

********** second error - the one I am now stuck on **********************
So am now using the same example code, but with the td/stream.py modified by adding the line "from websockets import client"

I get the below errors:

---

PS C:\VS_Code\TD_API> & C:/Users/gerar/AppData/Local/Programs/Python/Python38-32/python.exe c:/VS_Code/TD_API/Using_Stream_Client.py
Traceback (most recent call last):
File "c:/VS_Code/TD_API/Using_Stream_Client.py", line 23, in
td_stream_client.stream(True)
File "C:\Users\gerar\AppData\Local\Programs\Python\Python38-32\lib\site-packages\td\stream.py", line 539, in stream
self.loop.run_until_complete(self._connect())
File "C:\Users\gerar\AppData\Local\Programs\Python\Python38-32\lib\asyncio\base_events.py", line 616, in run_until_complete
return future.result()
File "C:\Users\gerar\AppData\Local\Programs\Python\Python38-32\lib\site-packages\td\stream.py", line 636, in _connect
self.connection = await websockets.client.connect(self.websocket_url)
File "C:\Users\gerar\AppData\Local\Programs\Python\Python38-32\lib\site-packages\websockets\legacy\client.py", line 649, in await_impl_timeout
return await asyncio.wait_for(self.await_impl(), self.open_timeout)
File "C:\Users\gerar\AppData\Local\Programs\Python\Python38-32\lib\asyncio\tasks.py", line 483, in wait_for
return fut.result()
File "C:\Users\gerar\AppData\Local\Programs\Python\Python38-32\lib\site-packages\websockets\legacy\client.py", line 660, in await_impl
await protocol.handshake(
File "C:\Users\gerar\AppData\Local\Programs\Python\Python38-32\lib\site-packages\websockets\legacy\client.py", line 331, in handshake
self.extensions = self.process_extensions(
File "C:\Users\gerar\AppData\Local\Programs\Python\Python38-32\lib\site-packages\websockets\legacy\client.py", line 220, in process_extensions
raise NegotiationError(
websockets.exceptions.NegotiationError: Unsupported extension: name = permessage-deflate, params = []
PS C:\VS_Code\TD_API>

---

PS C:\VS_Code\TD_API> pip list
Package Version

---

certifi 2021.5.30
cffi 1.14.6
charset-normalizer 2.0.6
click 8.0.1
colorama 0.4.4
cryptography 3.4.8
Flask 2.0.1
idna 3.2
itsdangerous 2.0.1
Jinja2 3.0.1
MarkupSafe 2.0.1
oauthlib 3.1.1
pip 21.2.4
pycparser 2.20
pyOpenSSL 20.0.1
requests 2.26.0
requests-oauthlib 1.3.0
setuptools 41.2.0
six 1.16.0
td-ameritrade-python-api 0.3.5
urllib3 1.26.6
websockets 10.0
Werkzeug 2.0.1
PS C:\VS_Code\TD_API>

python code is attached as a text file
Sample_py.txt

[gmstuff]

Update : I was kinda thinking this was a WebSockets compatibility issue, so I reviewed Alex's streaming video again, took a note of what version of WebSockets he was running and saw he had V 8.0.2.

I uninstalled my WebSockets V10, installed WebSockets 8.0.2 and the script ran without errors, pulling back minimal data (but then it is Saturday out of hours)

So the question I guess becomes, erm.... is this an issue with the TD api or the WebSockets library?

[lilbumblebear]

I get the same issue, but cannot get an install of websockets 8.0.2 to work. Any other ideas?

[sbaldwin72]

I was having the same issue when I moved over to a new host. My previous host was running websockets 8.1. I was able to downgrade websockets from 10.1 to 8.1 and it got rid of the AttributeError: module 'websockets' has no attribute 'client'. I had tried the 9.1 that is in requirement.txt of this branch, but it got the same error. So I am up and running on websockets 8.1.

[chotaGit]

I changed the following in stream.py

        # Create a connection.
#        self.connection = await websockets.client.connect(self.websocket_url)
        self.connection = await websockets.connect(self.websocket_url)

This is working with Websockets 10