Opc.Ua.Bindings.TcpClientChannel.SendHelloMessage C# (CSharp) Method

        private void SendHelloMessage(WriteOperation operation)
        {            
            Utils.Trace("Channel {0}: SendHelloMessage()", ChannelId);

            byte[] buffer = BufferManager.TakeBuffer(SendBufferSize, "SendHelloMessage");
            
            try
            {
                MemoryStream ostrm = new MemoryStream(buffer, 0, SendBufferSize);
                BinaryEncoder encoder = new BinaryEncoder(ostrm, Quotas.MessageContext);
                
                encoder.WriteUInt32(null, TcpMessageType.Hello);
                encoder.WriteUInt32(null, 0);
                encoder.WriteUInt32(null, 0); // ProtocolVersion
                encoder.WriteUInt32(null, (uint)ReceiveBufferSize);
                encoder.WriteUInt32(null, (uint)SendBufferSize);
                encoder.WriteUInt32(null, (uint)MaxResponseMessageSize);
                encoder.WriteUInt32(null, (uint)MaxResponseChunkCount);
                            
                byte[] endpointUrl = new UTF8Encoding().GetBytes(m_url.ToString());

                if (endpointUrl.Length > TcpMessageLimits.MaxEndpointUrlLength)
                {
                    byte[] truncatedUrl = new byte[TcpMessageLimits.MaxEndpointUrlLength];
                    Array.Copy(endpointUrl, truncatedUrl, TcpMessageLimits.MaxEndpointUrlLength);
                    endpointUrl = truncatedUrl;
                }

                encoder.WriteByteString(null, endpointUrl);
                                
                int size = encoder.Close();
                UpdateMessageSize(buffer, 0, size);

                BeginWriteMessage(new ArraySegment<byte>(buffer, 0, size), operation);
                buffer = null;
            }
            finally
            {
                if (buffer != null)
                {
                    BufferManager.ReturnBuffer(buffer, "SendHelloMessage");
                }
            }
        }