wip

lib/ex_webrtc/sdp_utils.ex

@@ -129,9 +129,21 @@ defmodule ExWebRTC.SDPUtils do
 
   @spec add_ice_candidates(ExSDP.t(), [String.t()]) :: ExSDP.t()
   def add_ice_candidates(sdp, candidates) do
+    # we only add candidates to the first mline
+    # as we don't support bundle-policies other than "max-bundle"
     candidates = Enum.map(candidates, &{"candidate", &1})
-    media = Enum.map(sdp.media, &ExSDP.add_attributes(&1, candidates))
-    %ExSDP{sdp | media: media}
+
+    if sdp.media != [] do
+      mline =
+        sdp.media
+        |> List.first()
+        |> ExSDP.add_attribute(candidates)
+
+      media = List.replace_at(sdp.media, 0, mline)
+      %ExSDP{sdp | media: media}
+    else
+      sdp
+    end
   end
 
   @spec get_dtls_role(ExSDP.t()) ::