Beijer ELECTRONICS SER0055 iX Detect VNC Client Connection User Guide
- June 8, 2024
- Beijer ELECTRONICS
Table of Contents
Beijer ELECTRONICS SER0055 iX Detect VNC Client Connection
Function and area of use
This document shows how to check whether a VNC Client is connected to the X2 panel. The time for the cyclic check is adjustable inside the script module.
About this document
This quick start document should not be considered as a complete manual. It is an aid to be able to startup a normal application quickly and easily.
Copyright © Beijer Electronics, 2021
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updated versions.
Use the following items in order to obtain a stable application:
In this document we have used following software and hardware
- iX Developer 2.40 SP5 / SP6
- X2 base/pro/marine/control/extreme series
For further information refer to
- iX Developer Reference Manual (MAxx831)
- iX Developer User’s Guide (MAxx832)
- Beijer Electronics knowledge database, Help Online
This document and other Startup documents can be obtained from our homepage.
Please use the address
[email protected]
for feedback about our Startup documents.
The iX example project
The cyclic check whether a VNC Client is connected is done inside the script
module
SCM_VNCDetection.
The VNC server
In the System menu you can activate the VNC/Remote Access Server.
Optionally specify credentials and/or eenable “Notify when connection is
active”.
This option shows that a VNC Client connection is active in a small PopUp –
but you don´t get this information bound to an iX Tag.
The Referenced Assembly OpenNETCF.Net.dll
OpenNETCF is committed to open source projects to help the mobile and embedded
development community in their projects whether it be enterprise development
or commercial development. All projects are under either the OpenNETCF Shared
Source License or the MIT X11 license.
In “Project” “Referenced Assemblies” the “OpenNETCF.Net.dll” is inserted.
The Script Module
Inside the script module the following Namespace is inserted additionally to
enable TCP socket info.
using OpenNETCF.Net.NetworkInformation;
Every iX script module brings a “Created” method with it, which is perfect to
initialize stuff as it is worked on exactly once at the start of the iX
project.
-
// The method is invoked when the script module object is created.
-
void SCM_VNCDetection_Created(System.Object sender, System.EventArgs e)
-
{
-
m_Timer= new Timer();
-
m_Timer.Enabled = true;
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m_Timer.Interval = 2000; //ms – adjust time for cyclic check here.
-
m_Timer.Tick += OnTimerTick;
-
}
-
// Cycle
-
private void OnTimerTick(System.Object sender, System.EventArgs e)
-
{
-
CheckIfVNCPortisOpen(5900); // This is the VNC port to check (default is 5900)
-
}
-
// Check if VNC port is open, gets port, sets the VncActive tag
-
public void CheckIfVNCPortisOpen(int port)
-
{
-
bool foundPort = false;
-
IPGlobalProperties ipProperties = IPGlobalProperties.GetIPGlobalProperties();
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TcpConnectionInformation[] tcpConnections = ipProperties.GetActiveTcpConnections();
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foreach (TcpConnectionInformation info in tcpConnections)
-
if( (byteswap(info.LocalEndPoint.Port) == port) &&
-
(info.State.ToString() == “Established”) )
-
{
// Set tag if port connection is established -
Globals.Tags.VNCActive.Value = true;
-
foundPort = true;
-
}
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if(!foundPort)
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// If no port is found, reset tag
-
Globals.Tags.VNCActive.Value = false;
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}
Adding the VNC Client Detection
Implementation
- Import the script module “SCM_VNCDetection” , see example project (iX_Detect_VNC_Client_V1_0_0).
- Create the Tag “VNCActive” with Datatyp BOOL
- Add the OpenNETCF.Net.dll to your referenced assemblies (see 4.2).
- Optionally import Screen1 of the example project (iX_Detect_VNC_Client_V1_0_0).
- Adapt the screen to your needs.
- Transfer the application.
- Run the application.
Import the project parts
Follow the steps to add the enclosed screen and the script module to your iX project:
- Unpack the enclosed example ZIP-file to a temporary folder.
- Start iX Developer and load your project.
- In the Project Explorer, right-click in the lower left corner (1. in the picture)
- In the list, select Import… (2. in the picture)
- Navigate to the temporary folder, where you unpacked the ZIP-file and select SCM_VNCDetection.neo, click [Open]. Select and add the OpenNETCF.Net.dll . It is located in the example project -folder iX_Detect_Internet_Connection_V1_0_0\ReferencedAssembly.
- Select Screen1.neoxaml, click [Open].
- Done!
About Beijer Electronics
Beijer Electronics is a multinational, cross-industry innovator that connects
people and technologies to optimize processes for business-critical
applications. Our offer includes operator communication, automation solutions,
digitalization, display solutions and support. As experts in user-friendly
software, hardware and services for the Industrial Internet of Things, we
empower you to meet your challenges through leading-edge solutions. Beijer
Electronics is a Beijer Group company.
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