Add max TCP buffer size

[amcmahon01]

Description

A max buffer size should be imposed on the TCP transfer mechanism so that if a connection is dropped real-time display data does not accumulate to unreasonable sizes.

Context

This will reduce memory and swap space usage, improve performance and provide more up to date data when reconnected.

Possible Implementation

Implement a queuing system which either ignores calls after a certain point or a ring buffer that holds only to most recent values.