Node-Red connection to another device, from a server

General
1

Hello all,

I have been working with a server on a desktop and have connected a device that is running Node-Red (Advantech ADAM 6750) and when I go to the Chrome web browser and type in the url "(ADAM ip):1880/hello" it pulls up the response I had set up, but when I use the server that was set up on the desktop and try to access the same url I do not get anything as a response, the server uses c# and I have tried the following code to access the Node-Red HTTP request:

WebClient client = new WebClient();
client.Credentials = new NetworkCredential ("user","pass");
string value = client.DownloadString("https://(ADAM ip):1880/hello");

I get no response what so ever, (I am not using HttpClient becasue the server doesnt offer that library).

Any help would be much appreciated.

2

Are you using https:// when you do it in the browser or just http? If not https then use http in your client s/w.

3

I have tried it with both, but i am currently using https

4

Where are you putting that code? Where is the WebClient() function coming from?

5

It is coming from a software program on the desktop that runs a limited version of c# hence the reason i dont have access to HttpClient

6

  1. Does it work in your c# app if you use "https://www.google.com" for example?

  2. Also does it work for ip:1880 without the /hello?

  3. Does https work in the browser?

  4. Are you running the browser on the same machine that the node-red server is running on?

7

  1. Http and Https both worked in the browser

  2. Everything is being run on the same computer, except the Adam module which is on the same network.

      1. I can try next time im at my computer and respond to those then - most likely monday
8

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