Difference: AppxHTMLClient (4 vs. 5)

Revision 52014-11-11 - JeanNeron

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APPX HTML Client

This page gives an overview of and installation instructions for the Appx HTML client.

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Overview

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<		The Appx HTML client is designed to allow you to connect to an Appx server and run Appx applications using a browser, either on the desktop, a tablet or a smartphone. In this release, you can only run the applications, you cannot design them. Specifically, the ILF editor and Image Editor are not supported. You may be able to work in Application Design so long as you avoid those 2 editors.
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>		The Appx HTML client is designed to allow you to connect to an Appx server and run Appx applications using a browser, either on the desktop, a tablet or a smartphone. When running the client in a browser, no software is required on the desktop, tablet or smart phone. When the user logs on, the necessary code is downloaded to their device as required.
 
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<		The client will support SSL connections if your web server is configured appropriately. If not, the client will use it's own built in AES encryption so you data is still protected.
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>		In this release, you can only run the applications, you cannot design them. Specifically, the ILF editor, old ILF Debugger and Image Editor are not supported. You may be able to work in Application Design so long as you avoid those.
 
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<		The Appx HTML client consists of two modules:
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>		The client will support SSL connections if your web server is configured appropriately. If not, the client will use it's own built in AES encryption so your data is still protected.
 
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>		The Appx HTML client consists of two modules:
 
  • Web Server Files. These are the javascipt libraries and style sheets that make up the HTML client. These must be installed in your web server's document directory. These files are platform independent.
  • APPX Server connector. This is a small javascript library that connects the client running in your browser to the actual Appx engine. The Appx Server Connector is platform specific, you will need the one that matches the O/S under which your web server is running.
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<		Note that Appx does not have to be running on the same server as your web server, and the APPX Server Connector does not have be on the same server as either Appx or your web server. This gives you maxium flexibility in configuring your installation.
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>		Note that Appx does not have to be running on the same server as your web server, and the APPX Server Connector does not have be on the same server as either Appx or your web server. This gives you maxium flexibility in configuring your installation.
  Once the HTML client is working, you can connect to any Appx 5.4+ server, just as you can with the Appx Desktop Client. Due to the engine changes that were made in 5.4 to support the HTML client, you cannot connect to an earlier Appx engine.
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LocalConnector

Because of the tighter security in web browsers, it is not possible for HTML 5/javascript to seamlessly upload, download or open files on the users desktop the way it can be done with the Appx Desktop Client. To address this, the HTML client includes a small 'helper' program that supports this. By default, the HTML client will check to see if this helper program is installed when the user logs in. If it is not installed, it will offer to install it, and if the user cancels they will be nagged the next time they log in.

If your application does not require the ability to upload/download/open files on the desktop, you can turn this off (see Installation below).

There is a 'Connectivity' indicator in the lower right corner of the browser window with the words 'Remote' and 'Local'. If 'Local' is in green, it means the LocalConnector is installed & runnning. Red means the connector is not installed. The 'Remote' connector refers to the connection to the Appx Server Connector. This must be green for any connection to work.

Differences between ADC and HTML Clients

The HTML client has a different presentation for most non-Appx elements such as Date Choosers, File Upload/download dialog boxes, Tables, etc. The goal of the HTML client was to replicate the presentation of your screens as accurately as possible as far as the Appx elements are concerned (i.e., the widgets and fields you use in the Image Editor). Since we use different 3rd party tools and runtimes for other elements, they will look different compared to the Appx Desktop Client.

 

Requirements

You will need a web server, either Linux or Windows based. If you are going to use the Apache web server and you want to use a forwarding proxy, it must be version 2.4 or higher. We have tested IIS on Win 7 with success, earlier versions of IIS have not been tested.

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  Assuming the web server to which we installed the client is 192.168.0.15, and that we installed everything into an 'appx' folder on the web server, then we should be able to get a client login dialog box via:
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>		http://192.168.0.15/appx/client.html

You must open port 3014 on your web server for this connection to work. If you do not want to open any new ports on your web server, see the next section 'Tunneling/Forwarding'.

LocalConnector

As mentioned above, you can suppress the requirement for the LocalConnector by changing the following line in /var/www/html/appx/client.html:

<meta name="appx-local-required" content="true" >

 
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<		You must open port 3014 on your web server for this connection to work. If you do not want to open any new ports on your web server, see the next section 'Tunneling'.
 

Tunneling/Forwarding

If you do not want to open port 3014 and would rather use port 80, you can use forwarding instead. For example, to configure Apache 2.4 you would do the following:

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 Read what other users have said about this page or add your own comments.
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  -- JeanNeron - 2014-11-10
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