/// <summary>
        /// TODO: Documentation StartTurnPeer
        /// </summary>
        /// <param name="sid"></param>
        private void StartTurnPeer(String sid)
        {
            JingleSession jingleSession = this.JingleManager.FindSession(sid);

            if (jingleSession != null &&
                jingleSession.Remote.Action == ActionType.session_initiate)
            {
                JingleContent jingleContent = jingleSession.Remote.GetContent(0);
                JingleIce     jingleIce     = jingleContent.GetElement <JingleIce>(0);

                foreach (JingleIceCandidate candidate in jingleIce.GetCandidates())
                {
                    if (candidate.Type == IceCandidateType.relay)
                    {
                        if (this.OnTurnStart != null)
                        {
                            this.OnTurnStart(this, candidate.EndPoint, sid);
                        }

                        if (this.OnConnectionTryEnded != null)
                        {
                            this.OnConnectionTryEnded(this, sid);
                        }

                        this.CancelStartingSession();
                        break;
                    }
                }
            }
        }
        /// <summary>
        /// TODO: Documentation CheckConnectivity
        /// </summary>
        /// <param name="sid"></param>
        private void CheckConnectivity(String sid)
        {
            if (this.turnSessions.ContainsKey(sid))
            {
                this.holePuncher = new HolePuncher(this.turnSessions[sid].TurnManager.HostEP, sid);

                JingleSession jingleSession = this.JingleManager.FindSession(sid);

                JingleContent jingleContent = jingleSession.Remote.GetContent(0);

                JingleIce jingleIce = jingleContent.GetElement <JingleIce>(0);

                foreach (JingleIceCandidate remoteCandidate in jingleIce.GetCandidates())
                {
                    switch (remoteCandidate.Type)
                    {
                    case IceCandidateType.host:
                    case IceCandidateType.prflx:
                    case IceCandidateType.srflx:
                        foreach (JingleIceCandidate localCandidate in this.localCandidates[sid])
                        {
                            if (localCandidate.Type == remoteCandidate.Type)
                            {
                                this.holePuncher.AddEP(remoteCandidate.Priority, remoteCandidate.EndPoint);
                                break;
                            }
                        }
                        break;

                    case IceCandidateType.relay:
                        if (this.TurnSupported &&
                            jingleSession.Remote.Action == ActionType.session_accept)
                        {
                            this.turnSessions[sid].TurnManager.CreatePermission(new XorMappedAddress(remoteCandidate.RelatedEndPoint),
                                                                                this.turnSessions[sid].TurnAllocation);
                        }
                        break;
                    }
                }

                if (!this.holePuncher.CanStart && this.TurnSupported)
                {
                    this.StartTurnPeer(sid);
                }
                else
                {
                    this.holePuncher.StartTcpPunch(this.HolePunchSuccess, this.HolePunchFailure);
                }
            }
        }