func getEncodingFromAccept(produces []string, r *request.Request) (string, *response.Error) {
var encoding string
for _, acceptMime := range strings.Split(r.Header.Get(constants.HEADER_Accept), ",") {
mime := strings.Trim(strings.Split(acceptMime, ";")[0], " ")
if 0 == len(mime) || mime == "*/*" {
if len(produces) == 0 {
encoding = defaults.MimeType
break
} else {
encoding = produces[0]
break
}
} else {
if util.ContainsString(produces, mime) {
encoding = mime
break
}
}
}
if len(encoding) == 0 {
return encoding, response.NewError(406, "Request", "Encoding requested not valid.")
}
return encoding, nil
}
func CheckSchemes(schemes []string) MiddlewareFunc {
return MiddlewareFunc(func(next Handler) Handler {
return HandlerFunc(func(w *response.Response, r *request.Request) {
var schemeAccepted bool
if r.URL.Scheme == "" {
r.URL.Scheme = constants.SCHEME_HTTP
}
schemeAccepted = util.ContainsString(schemes, r.URL.Scheme)
if !schemeAccepted {
return
}
next.ServeHTTP(w, r)
})
})
}