Setting this to true will log the contents of network message to the console.
Warning: this can be a lot of data and can be very slow. Both incoming and outgoing messages are logged. The format of the logs is:
ConnectionSend con:1 bytes:11 msgId:5 FB59D743FD120000000000
ConnectionRecv con:1 bytes:27 msgId:8 14F21000000000016800AC3FE090C240437846403CDDC0BD3B0000
Note that these are application-level network messages, not protocol-level packets. There will typically be multiple network messages combined in a single protocol packet.