Avoiding allocation in broadcast server

[Kagamin]

On Friday, 7 February 2014 at 22:04:31 UTC, Casper Færgemand 
wrote:
> Suppose I have a multi client broadcast server. One client 
> sends a string, every client receives it. The client read 
> thread reads the input from the client

Client reads from the client? And what does the server?

> Is there a way it can be done without allocation?

There are innumerable ways to do multithreaded programming. They 
have different tradeoffs in speed, safety and resource 
consumption.