sendAnswerSdp method
Implementation
void sendAnswerSdp(String? otherUserId, RTCSessionDescription? sdp) async {
final connection = getConnection(otherUserId!);
if (connection != null) {
await connection.setOfferSdp(sdp!);
final answerSdp = await connection.createAnswer();
sendMessage('answer-sdp', {
'userId': userId,
'otherUserId': otherUserId,
'sdp': answerSdp!.toMap(),
});
}
}