Implementation of the SOCKSv4 protocol.
| Class | SOCKSv4Outgoing | Undocumented |
| Class | SOCKSv4Incoming | Undocumented |
| Class | SOCKSv4 | An implementation of the SOCKSv4 protocol. |
| Class | SOCKSv4Factory | A factory for a SOCKSv4 proxy. |
| Class | SOCKSv4IncomingFactory | A utility class for building protocols for incoming connections. |