== TCP Broadcast Sample
This sample demonstrates broadcasting a message received by a web controller to all connected TCP clients.
`curl -X POST http://localhost:8080/broadcast/foo` will send 'foo' to 5 connected clients.
The TCP server listens on port 1234.
`2018-11-19 12:01:48.546 INFO 98411 --- [ main] com.example.TcpBroadcastApplication : Started TcpBroadcastApplication in 1.904 seconds (JVM running for 2.345)`
`connected! from client# 5`
`connected! from client# 4`
`connected! from client# 3`
`connected! from client# 2`
`connected! from client# 1`
`curl -X POST http://localhost:8080/broadcast/foo`
`foo from client# 4`
`foo from client# 5`
`foo from client# 2`
`foo from client# 1`
`foo from client# 3`
To shut down the application:
`curl http://localhost:8080/shutdown`
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