Amqp.Connection.OnOpen C# (CSharp) Method

        void OnOpen(Open open)
        {
            lock (this.ThisLock)
            {
                if (this.state == State.OpenSent)
                {
                    this.state = State.Opened;
                }
                else if (this.state == State.ClosePipe)
                {
                    this.state = State.CloseSent;
                }
                else
                {
                    throw new AmqpException(ErrorCode.IllegalState,
                        Fx.Format(SRAmqp.AmqpIllegalOperationState, "OnOpen", this.state));
                }
            }

            if (open.ChannelMax < this.channelMax)
            {
                this.channelMax = open.ChannelMax;
            }

            if (open.MaxFrameSize < this.maxFrameSize)
            {
                this.maxFrameSize = open.MaxFrameSize;
            }

            uint idleTimeout = open.IdleTimeOut;
            if (idleTimeout > 0 && idleTimeout < uint.MaxValue)
            {
                idleTimeout -= 3000;
                if (idleTimeout > MaxIdleTimeout)
                {
                    idleTimeout = MaxIdleTimeout;
                }

                this.heartBeatTimer = new Timer(onHeartBeatTimer, this, (int)idleTimeout, (int)idleTimeout);
            }

            if (this.onOpened != null)
            {
                this.onOpened(this, open);
            }
        }