These area the exceptions defined by bjsonrpc. You can create your own exceptions by creating a child class of bjsonrpc.exceptions.ServerError.
End-of-file error raised whenever the socket reaches the end of the sream. In normal operation, this error never is sent to the developer. If you get this error, it may be a bug.
Exception raised whenever an error occurs in the other end handling your request. You may create your own versions of this class to send custom exceptions through RPC.