Node JS Service with ASP.Net Core RSS

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  kishanbunny

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  Node JS Service with ASP.Net Core

  Nov 25, 2020 02:41 PM|kishanbunny|LINK

  I have setup with ASP.Net Core with Node JS service and I want to run this. Still I get the error.

  var https = require('https'),                  // Module for https
      fs =    require('fs');                     // Required to read certs and keys
  
      var options = {
         hostname: 'api.ssg-wsg.sg',			// Production Base URL
         path: '/skillsFramework/sectors',		// This API is to retrieve all Sectors
         method: 'GET',					// Method : Get or POST
         key: fs.readFileSync('C://Users/Kishan/key.pem'),		//Input the directory for key.pem
         cert: fs.readFileSync('C://Users/Kishan/cert.pem') 		//Input the directory for cert.pem
         //passphrase: 'InputPassWord' 						//Input the passphrase, please remember to put ',' End of Line for cert 		
      };
  
      makeAPICall = function(response) {
         var str = '';    
         response.on('data', function (chunk) {
            str += chunk;
         });
  
         response.on('end', function () {
            console.log(str);
         });
      }
  
  https.request(options, makeAPICall).end();

  Please, someone help me. I really stuck in this.

  Kindly,

  Kishan

• • Reply
  bruce (sqlwo...

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  Re: Node JS Service with ASP.Net Core

  Nov 25, 2020 04:34 PM|bruce (sqlwork.com)|LINK

  you don't say how you are trying to run this script.

  I assume you are trying to use Microsoft.AspNetCore.NodeServices. the issue you are having is the service runs npm, not node. npm is a package manager. it is used to build node programs (the watcher feature typically uses express to host a running version of the program).  the service is running the equivalent of:

    npm run <your script name>

  first get this to manually work, then use the node service.  if you want npm to run your program, you first need to create a package.json

     npm --init

  then add your script program to the scripts section and have node run it

     "scripts": {
        "prod": "node test.js"
       },

  then its just:

      npm run prod

  note: services source:

  https://github.com/dotnet/aspnetcore/blob/db3d23b3af6c2ade6635faac35cbaff4a94694c1/src/Middleware/SpaServices.Extensions/src/Npm/NodeScriptRunner.cs

  this is a preset round about way to start a node program. I'd probably run node directly at startup rather than using the node service. as suggested in the source, if run on windows, use cmd /c to get proper stdin/stdout redirection.

  note2: back in 2.1 days, spa services ran node directly and could execute script fragments, but this feature was dropped.

  https://github.com/dotnet/aspnetcore/issues/12890

  bruce (sqlwork.com)
• • Reply
  kishanbunny

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  Re: Node JS Service with ASP.Net Core

  Nov 25, 2020 05:01 PM|kishanbunny|LINK

  Thank you for your support. I am slowly getting it. I hope I can run my scripts.

  Here, how I run the script =>

          [HttpGet]
          public async Task<IActionResult> MTLS()
          {
              try
              {
                  object postResult = await _nodeServices.InvokeAsync<string>("Scripts/CallMTLSAPI.js");
                  return Ok(postResult);
              }
              catch (Exception ex)
              {
                  return BadRequest();
              }
  
              var data = await _nodeServices.InvokeAsync<byte[]>("Scripts/CallMTLSAPI.js");
              return Ok(data);
          }

• • Reply
  bruce (sqlwo...

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  Re: Node JS Service with ASP.Net Core

  Nov 25, 2020 07:37 PM|bruce (sqlwork.com)|LINK

  you need to specify the version of .net core you are using and the code you used to create _nodeServices.

  it appears you are using asp.net core 2.1 NodeServices (which is obsolete and not supported in future versions). that service requires the script be a module. simple echo module:

  module.exports = function (callback, value) {
      callback(/* error */ null, value);
  };

  to convert your script:

  var https = require('https'),                  // Module for https  
      fs =  require('fs');                       // Required to read certs and keys
  var options = {
         hostname: 'api.ssg-wsg.sg',			// Production Base URL
         path: '/skillsFramework/sectors',		// This API is to retrieve all Sectors
         method: 'GET',					// Method : Get or POST
         key: fs.readFileSync('C://Users/Kishan/key.pem'),		//Input the directory for key.pem
         cert: fs.readFileSync('C://Users/Kishan/cert.pem') 		//Input the directory for cert.pem
         //passphrase: 'InputPassWord' 						//Input the passphrase, please remember to put ',' End of Line for cert 		
      };
  
  module.exports = function(callback) 
  {
       var makeAPICall = function(response) {
           var str = '';    
           response.on('data', function (chunk) {
              str += chunk;
           });
  
           response.on('end', function () {
              callback(null, str); //send back
           });
      };
  
      https.request(options, makeAPICall).end();
  };

  its not clear you you would not just write this in c#

  bruce (sqlwork.com)