func (r *response) WriteHeader(code int) {
if r.headerSent {
// Note: explicitly using Stderr, as Stdout is our HTTP output.
fmt.Fprintf(os.Stderr, "CGI attempted to write header twice on request for %s", r.req.URL)
return
}
r.headerSent = true
fmt.Fprintf(r.bufw, "Status: %d %s\r\n", code, http.StatusText(code))
// Set a default Content-Type
if _, hasType := r.header["Content-Type"]; !hasType {
r.header.Add("Content-Type", "text/html; charset=utf-8")
}
r.header.Write(r.bufw)
r.bufw.WriteString("\r\n")
r.bufw.Flush()
}
func (r *response) WriteHeader(code int) {
if r.wroteHeader {
return
}
r.wroteHeader = true
if code == http.StatusNotModified {
// Must not have body.
r.header.Del("Content-Type")
r.header.Del("Content-Length")
r.header.Del("Transfer-Encoding")
} else if r.header.Get("Content-Type") == "" {
r.header.Set("Content-Type", "text/html; charset=utf-8")
}
if r.header.Get("Date") == "" {
r.header.Set("Date", time.Now().UTC().Format(http.TimeFormat))
}
fmt.Fprintf(r.w, "Status: %d %s\r\n", code, http.StatusText(code))
r.header.Write(r.w)
r.w.WriteString("\r\n")
}