: (client "localhost" 47005 "56364719638394103~!chatSse" (out NIL (echo)))
HTTP/1.0 200 OK
Server: PicoLisp
Date: Sat, 24 Feb 2018 19:18:30 GMT
Cache-Control: max-age=0
Cache-Control: private, no-store, no-cache
Content-Type: text/event-stream

data: abc

HTTP/1.0 200 OK
Server: PicoLisp
Date: Sat, 24 Feb 2018 19:18:30 GMT
Cache-Control: max-age=0
Cache-Control: private, no-store, no-cache
Content-Type: text/event-stream

data: def

HTTP/1.0 200 OK
Server: PicoLisp
Date: Sat, 24 Feb 2018 19:18:30 GMT
Cache-Control: max-age=0
Cache-Control: private, no-store, no-cache
Content-Type: text/event-stream

data: ghi