小编igr*_*cia的帖子

我设置了远程描述，didSetSessionDescriptionWithError命中了回调，并显示了错误：

- (void)processAnswer:(NSString *)sdpAnswer connectionId:(NSString *)connectionId {
    //NSParameterAssert(sdpAnswer);
    NSParameterAssert(connectionId);

    NBMPeerConnection *connection = self.connectionMap[connectionId];
    __block __weak RTCPeerConnection* peerConnection = connection.peerConnection;
    RTCSessionDescription *description = [[RTCSessionDescription alloc] initWithType:RTCSdpTypeAnswer sdp:sdpAnswer];
   [connection.peerConnection setRemoteDescription:description completionHandler:^(NSError * _Nullable error) {
    [self peerConnection:peerConnection didSetSessionDescriptionWithError:error];
}];
}

通话后收到此错误。

错误Domain = org.webrtc.RTCPeerConnection代码= -1“ SessionDescription为NULL。”