Error codes for Chat methods

These are the error codes which returns from chat sdk methods when the request is failed due to any of the below error or Invalid request.

Code	Description
400	Invalid request due to sdk initialization or connection error
401	Unauthorized due to authentication fails
403	Forbidden for the restricted features
405	Not allowed due to login session exceeds limits
409	Conflict when the session is already loggedin
500	Connection failed or not connected
503	Service Unavailable
504	Gateway Timeout
599	Network connection timeout