| BlockingConnection | A synchronous style connection wrapper. |
| BlockingSender | A synchronous sender wrapper. |
| BlockingReceiver | A synchronous receiver wrapper. |
| SyncRequestResponse | Implementation of the synchronous request-response (aka RPC) pattern. |
| SendException | Exception used to indicate an exceptional state/condition on a send request. |
| LinkDetached | The exception raised when the remote peer unexpectedly closes a link in a blocking context, or an unexpected link error occurs. |
| ConnectionClosed | The exception raised when the remote peer unexpectedly closes a connection in a blocking context, or an unexpected connection error occurs. |