3.2.4.5.14 Connection Close, Connection Error, and Protocol Error Encountered
Connection close and connection error encountered MUST be handled identically by implementations of this protocol. This section discusses connection close. Implementations of this protocol MUST handle connection errors that it encounters in the same way. A connection close can come from either the client or the server. If a connection close comes from the client, the outbound proxy MUST free any data structures associated with it. If the connection close does not come while in a finished state, the outbound proxy MUST close all OUT channels to the client and all OUT channels to the server, free all data structures associated with the virtual connection, and transition to finished state. If the connection close comes in the finished state, the outbound proxy MUST ignore this event.
If a connection close comes from the server, the outbound proxy MUST close all OUT channels to the client and all OUT channels to the server, free all data structures associated with the virtual connection, and transition to finished state.
Protocol error MUST be handled by the outbound proxy implementation by closing all OUT channels to the client and all OUT channels to the server, freeing all data structures associated with the virtual connection, and transitioning to finished state.