package sockjs
import (
"crypto/md5"
"fmt"
"net/http"
"text/template"
)
var tmpl = template.Must(template.New("iframe").Parse(iframeBody))
func (h *handler) iframe(rw http.ResponseWriter, req *http.Request) {
etagReq := req.Header.Get("If-None-Match")
hash := md5.New()
hash.Write([]byte(iframeBody))
etag := fmt.Sprintf("%x", hash.Sum(nil))
if etag == etagReq {
rw.WriteHeader(http.StatusNotModified)
return
}
rw.Header().Set("Content-Type", "text/html; charset=UTF-8")
rw.Header().Add("ETag", etag)
tmpl.Execute(rw, h.options.SockJSURL)
}
var iframeBody = `
Don't panic!
This is a SockJS hidden iframe. It's used for cross domain magic.
`