// Parse a string representation of a Call-Id header, returning a slice of at most one CallId.
func parseCallId(headerName string, headerText string) (
headers []base.SipHeader, err error) {
headerText = strings.TrimSpace(headerText)
var callId base.CallId = base.CallId(headerText)
if strings.ContainsAny(string(callId), c_ABNF_WS) {
err = fmt.Errorf("unexpected whitespace in CallId header body '%s'", headerText)
return
}
if strings.Contains(string(callId), ";") {
err = fmt.Errorf("unexpected semicolon in CallId header body '%s'", headerText)
return
}
if len(string(callId)) == 0 {
err = fmt.Errorf("empty Call-Id body")
return
}
headers = []base.SipHeader{&callId}
return
}
func CallId(callid string) *base.CallId {
header := base.CallId(callid)
return &header
}