WebSocket close code
WebSocket close code: 1002 Protocol error
As text you can copy
1002 Protocol error- Kind
- Close code
- Where you meet it
- When a WebSocket connection closes
What does 1002 Protocol error mean in WebSocket?
An endpoint is ending the connection because of a protocol error.
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What it means in trading API work
One side sent something that breaks the rules of the WebSocket protocol itself. With a maintained client library this is unusual, and a proxy in between is sometimes the cause.
This part is this site's own explanation, written for people learning to call a trading API. It is not part of the source cited above and it describes no particular broker.
What should I do about 1002 Protocol error?
Update the WebSocket library and test without any proxy in between. If you build frames by hand, check them against the protocol.
This page is an independent explanation in plain words. The definition itself is in the source it was read from, which is the authority if the two ever differ.