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(),
});
}
}