plugin.api: implement WebsocketClient #4153
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- bump websocket-client requirement to >=1.2.1,<2.0 - avoid circular import by importing HTTPSession in session directly - implement a common WebsocketClient based on the WebSocketApp API of websocket-client, so that plugins don't have to re-implement basic boilerplate code - automatically apply User-Agent header - automatically apply proxy settings - set websocket log level (globally) - add tests
This was referenced Nov 6, 2021
Billy2011
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- avoid circular import by importing HTTPSession in session directly - implement a common WebsocketClient based on the WebSocketApp API of websocket-client, so that plugins don't have to re-implement basic boilerplate code - automatically apply User-Agent header - automatically apply proxy settings - set websocket log level (globally) - add tests Update websocket.py
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websocket-client, so that plugins don't have to re-implement basic
boilerplate code
This is a simple wrapper for
websocket-client'sWebSocketAppclass, which sets the HTTP header of the initialization request and which sets the HTTP proxy options from the session instance. The tests therefore don't test any actual websocket functionality, only the correct usage of theWebSocketAppAPI.Another important change is the update of the
websocket-clientversion requirement from>=0.58.0to>=1.2.1,<2.0. Their 1.0.0 release dropped support for py2, so this won't affect Streamlink, but some parameters were added between 1.0.0 and 1.2.1, so I had to bump the requirement.There are three plugins which are currently implementing websockets:
nicolive- via the high levelWebSocketAppAPIRetrieves the HLS URL from the websocket connection and needs to send custom pong/keep-alive responses
bastimeyer:plugin/api/websocket...bastimeyer:plugins/nicolive/rewrite
twitcasting- via high levelWebSocketAppAPIStream data is served via the websocket connection
bastimeyer:plugin/api/websocket...bastimeyer:plugins/twitcasting/websocket
ustreamtv- via the low levelcreate_connectionAPIRetrieves stream segment URLs from the websocket connection
This PR does not update the plugins. I will do this in separate PRs. I've already finished nicolive (complete rewrite) and twitcasting (websocket and custom stream class replacement). ustreamtv requires a complete rewrite as well and I'm still working on it (see #4040). I'm opening this PR now because I'm quite confident that ustreamtv won't require any further changes in the
WebsocketClient.