Lower case mime types for comparison in fmpt lines (#216)

Author: lookback-hugotunius

src/rtp_transceiver/fmtp/generic/generic_test.rs

@@ -147,3 +147,14 @@ fn test_generic_fmtp_compare() {
         check(a, b);
     }
 }
+
+#[test]
+fn test_generic_fmtp_compare_mime_type_case_mismatch() {
+    let a = parse("video/vp8", "");
+    let b = parse("video/VP8", "");
+
+    assert!(
+        b.match_fmtp(&*a),
+        "fmtp lines should match even if they use different casing"
+    );
+}

src/rtp_transceiver/fmtp/generic/mod.rs

@@ -38,7 +38,7 @@ impl Fmtp for GenericFmtp {
     /// The generic implementation is used for MimeTypes that are not defined
     fn match_fmtp(&self, f: &(dyn Fmtp)) -> bool {
         if let Some(c) = f.as_any().downcast_ref::<GenericFmtp>() {
-            if self.mime_type != c.mime_type() {
+            if self.mime_type.to_lowercase() != c.mime_type().to_lowercase() {
                 return false;
             }