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I have been working in the abstraction of the remote protocol to separate it from the server and the connection. The purpose of this is I need to use the Xapian remote protocol in a server we are working on (named Xapiand: https://github.com/Kronuz/Xapiand) which is similar to some extent to the `xapian-tcpsrv` in that it also serves databases remotely through TCP, using the binary protocol. What