allow image media type and udptl protocol in sdp parser (webrtc-rs#497)

Co-authored-by: mw-crown <[email protected]>

Author: 1HPorange

sdp/src/description/session.rs

@@ -1206,9 +1206,11 @@ fn unmarshal_media_description<'a, R: io::BufRead + io::Seek>(
     // <media>
     // Set according to currently registered with IANA
     // https://tools.ietf.org/html/rfc4566#section-5.14
+    // including "image", registered here:
+    // https://datatracker.ietf.org/doc/html/rfc6466
     let i = index_of(
         fields[0],
-        &["audio", "video", "text", "application", "message"],
+        &["audio", "video", "text", "application", "message", "image"],
     );
     if i == -1 {
         return Err(Error::SdpInvalidValue(fields[0].to_owned()));
@@ -1231,7 +1233,7 @@ fn unmarshal_media_description<'a, R: io::BufRead + io::Seek>(
         let i = index_of(
             proto,
             &[
-                "UDP", "RTP", "AVP", "SAVP", "SAVPF", "TLS", "DTLS", "SCTP", "AVPF",
+                "UDP", "RTP", "AVP", "SAVP", "SAVPF", "TLS", "DTLS", "SCTP", "AVPF", "udptl"
             ],
         );
         if i == -1 {