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# tomsg protocol (version 2)
-The underlying transport of the protocol is a plain TCP socket. The individual
-messages are all line-based; this means that a single message, both
-client->server and server->client, always ends with a newline (ASCII 10)
+The underlying transport of the protocol is a plain TCP socket. However,
+because private information is communicated, the recommended transport is an
+encrypted and authenticated wrapper around a TCP socket; examples are an SSH
+connection, or something built on a TLS connection.
+
+The individual messages are all line-based; this means that a single message,
+both client->server and server->client, always ends with a newline (ASCII 10)
character.
Preliminary definitions: