Function Output.addHeader

Add a http header. You can't set content-length, status or transfer-encoding headers. They are managed by serverino internally.

void addHeader (
  in const(string) key,
  in const(string) value
) @safe;

void addHeader (
  in const(string) key,
  in const(core.time.Duration) dur
) @safe;

void addHeader (
  in const(string) key,
  in const(std.datetime.systime.SysTime) time
) @safe;
// Set content-type to json, default is text/html
output.addHeader("content-type", "application/json");
output.addHeader("expire", 3.days);