Re: Server-Sent Events

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I'd adapted a example I found in PHP, and it simply works.

sse.html:

<!DOCTYPE html> 
<html> 
<head> 
  <title> SSE Example </title> 
  <meta charset="utf-8" /> 
</head> 
<body> 
  <script> 
    var source = new EventSource('sse.ex'); 
    source.onmessage = function(e) { 
      document.body.innerHTML += e.data + '<br>'; 
    }; 
  </script> 
</body> 
</html> 

sse.ex:

include std/datetime.e 
 
constant months = 
   {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"} 
 
constant days_week = 
   {"Sun","Mon","Tue","Wed","Thu","Fri","Sat"} 
 
export enum year, month, day, hour, minute, second, weekday 
 
export function now() 
   sequence _now = now_gmt() 
   _now &= weeks_day(_now) 
   return _now 
end function 
 
export function timestamp (sequence _date, sequence timezone = "UTC", integer offset = 0) 
   integer  i = 1 
   sequence weekday_name = days_week[_date[7]], 
            month_name = months[_date[2]] 
   return sprintf("%s, %02d %s %04d %02d:%02d:%02d %s", 
      {weekday_name, _date[3], month_name, _date[1], _date[4], _date[5], _date[6], timezone} ) 
end function 
 
puts (1, 
    "Content-Type: text/event-stream\r\n" & 
    "Cache-Control: no-cache\r\n" & 
    "\r\n") 
 
printf (1, 
    "id: %d\n" & 
    "data: %s\n", 
    { time(), timestamp(now()) }) 
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