Connection to WebServices using localhost or the IP of the computer

[Raul.Ionel]

Hello,

I have an application which uses the LabVIEW Web Services. I use the browser and I access:

http://localhost:8000/rg/index.html where 8000 is the http port (LabView2011). The applications works fine.

When I use http://COMPUTER_IP:8000/rg/index.html the page loads but nothing hapens. Is like the WebService is not accessed.

I have asked a friend to access this address from another computer and he gets the same thing. The page loads but nothing happens.

I am using Labview 2011 and Windows XP.

What am I doing wrong? Thank you.

[TailOfGon]

>>the page loads but nothing hapens

Hi, we need more detail here. What do you see when the page loads? What do you expect to happen?

[Raul.Ionel]

Hello and thank you for the reply,

I have attached 2 images. Image 1 shows the page and the webservice running. If I set the Frequency to a value I should get a sine graph.

Image 2 shows the same webpage but if I set the frequency nothing happens. So in my opinion the web service does not respond.

Thank you.

[TailOfGon]

What happens if you use a loopback ip (127.0.0.1=localhost)? What have you tried and what worked and what didn't?

[Raul.Ionel]

Hello,

So I have reinstalled completely Windows XP and LabView 2011. I have not installed any antivirus and the firewall is disabled.

1. I have created a new project, with a new webservice and deployed it.

2. For the newly deployed webservice I have opened a browser and accessed the service via:

                                     http://localhost:8080/Generator/Main/3        and        http://82.139.123.117:8080/Generator/Main/3

I have even asked a friend from a different network to access the webservice and it worked.

3. I have installed the Web UI Builder and created an interface for the service, tested the interface, obtained the index.html file from NI (named it rg).

4. I have copied this archive to: C:\Program Files\National Instruments\LabVIEW 2011\www, the HTTP port was by default 8000 so I left it like that.

5. I have used the address: http://localhost:8000/rg/index.html   and I could see the page but it was no response from the web service (image 1).

6. Then I copied the same rg directory to C:/Program Files/National Instruments/Shared/NI WebServer/www/rg/ .

7. Now If I access http://localhost:8080/rg/index.html - it works (image 2), http://127.0.0.1:8080/rg/index.html - does not work (image 3), http://82.139.123.117:8080/rg/index.html - does not work (image 4).

Image 5 are the settings of my Labview configuration.

What do you think, what am I doing wrong?

[Raul.Ionel]

Hello,

I solved the issue.

Instead of using the locally installed Web UI Builder and building your application with a service to which you connect using localhost:8080,

I just used the on-line Web UI Builder and connected to the web service using computer IP:8080.

I deployed and built the project, then I downloaded the files to my computer. In that way I am able to use the the web service with both calls:

http://localhost:8080/expadd/index.html   and  http://145.94.189.210:8080/expadd/index.html

Also, I have tried to access it from another computer with http://145.94.189.210:8080/expadd/index.html and it works just fine.

Have a nice day.