Web Twain With Local Service

Questions, comments and suggestions concerning VintaSoft Twain .NET SDK.

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tony_c
Posts: 6
Joined: Tue May 22, 2018 5:21 pm

Web Twain With Local Service

Post by tony_c » Tue May 22, 2018 6:10 pm

I am trying to convert our solution from using the ActiveX version of Twain to a web service based solution. I have been looking at the WebTwainDemoWithLocalService solution provided in the code examples. I can get the demo solution working with a local service. I have been trying to convert this solution so that the web service runs on a server and the clients will connect using the same JavaScript methods used in the demo project, but I cannot get seem to connect from a client to the service when it is running locally on a server. Does the web service need to be located on each client's machine or can it be moved to a server?

Thanks,
Tony

Alex
Site Admin
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Joined: Thu Jul 10, 2008 2:21 pm

Re: Web Twain With Local Service

Post by Alex » Tue May 22, 2018 7:53 pm

Hello Tony,
tony_c wrote:
Tue May 22, 2018 6:10 pm
Does the web service need to be located on each client's machine or can it be moved to a server?
The local web TWAIN service provides access to the local scanners and it must be executed on the computer, which is connected with scanner.

We provide installer, which allows to install web TWAIN service on local computer.

Best regards, Alexander

tony_c
Posts: 6
Joined: Tue May 22, 2018 5:21 pm

Re: Web Twain With Local Service

Post by tony_c » Tue May 22, 2018 8:19 pm

Okay, good to know. So I have two follow up questions.

First, our product is hosted on a server and many different clients connect to it. With the ActiveX Twain solution we were using a single license for the server. Does this mean that we will require a licence for each individual client machine that will be using the web TWAIN service or will a single server license be sufficient?

Second, can you let me know where I can find the installer for TWAIN service on a local computer?

Thanks,
Tony

Alex
Site Admin
Posts: 1577
Joined: Thu Jul 10, 2008 2:21 pm

Re: Web Twain With Local Service

Post by Alex » Tue May 22, 2018 8:35 pm

tony_c wrote:
Tue May 22, 2018 8:19 pm
First, our product is hosted on a server and many different clients connect to it. With the ActiveX Twain solution we were using a single license for the server. Does this mean that we will require a licence for each individual client machine that will be using the web TWAIN service or will a single server license be sufficient?
You need the Single URL license. More info please read in the license agreement: https://www.vintasoft.com/vstwain-dotnet-license.html

tony_c wrote:
Tue May 22, 2018 8:19 pm
Second, can you let me know where I can find the installer for TWAIN service on a local computer?
Installer for web TWAIN service, which is based on Web API, can be downloaded from this link: http://www.vintasoft.com/zip/VSWebTwainService1_2.zip

Installer for WCF TWAIN service, which is based on WCF, can be downloaded from this link: http://www.vintasoft.com/zip/VSWcfTwainService1_2.zip

Before using the installer please read the article that describes how to
acquire images from scanner in ASP.NET MVC: https://www.vintasoft.com/docs/vstwain- ... _Mvc.html
Also please evaluate our on-line demo:
https://demos.vintasoft.com/AspNetMvcTw ... calService

Best regards, Alexander

tony_c
Posts: 6
Joined: Tue May 22, 2018 5:21 pm

Re: Web Twain With Local Service

Post by tony_c » Tue May 22, 2018 10:27 pm

Will the installers for web TWAIN service work on 32 and 64 bit machines? What about different versions of Windows?

Alex
Site Admin
Posts: 1577
Joined: Thu Jul 10, 2008 2:21 pm

Re: Web Twain With Local Service

Post by Alex » Thu May 24, 2018 10:40 am

Hello,
tony_c wrote:
Tue May 22, 2018 10:27 pm
Will the installers for web TWAIN service work on 32 and 64 bit machines? What about different versions of Windows?
Our "standard" installer can work in different versions of Windows (Microsoft Windows XP, Vista, 7, 8, 8.1, 10 (32-bit and 64-bit); Microsoft Windows Server 2003, 2008, 2012 (32-bit and 64-bit)).

Also you can create custom installer, more info please read here: https://www.vintasoft.com/docs/vstwain- ... t_Mvc.html

Best regards, Alexander

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