### ### ### terminal 1 ### ### ###

bash-4.3$ awk -f - <<'ENDOFCODE'
> BEGIN{while(s="/inet/tcp/8080/0/0"){print"HTTP/1.1 418 I'm a teapot\n"|&s
> close(s)}}
> ENDOFCODE

### ### ### terminal 2 ### ### ###

bash-4.3$ curl -D - http://localhost:8080/
HTTP/1.1 418 I'm a teapot