NewmessageConnection is a convenience function to create a properly-initialized messageConnection.

Write marshals a Message into the proper on-wire format and sends it to the remote system.

We restrict messages to 1Mb in size as a precaution against a single message just filling up all available memory on the server.

Common errors we'll run into.

MessageReadWriteCloser implementers provide a wrapper around the Hologram protocol that servers can use in their connection handlers.

ConnectionHandlerFunc implementers are called as goroutines by the server when a message is received.