I want to be able to execute javascript code in my back-end .NET API, so I tried following these steps and I created a .NET API as follows:
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Jering.Javascript.NodeJS;
using System.Net;
namespace NodeJSTestAPI.Controllers
{
[ApiController]
[Route("testNodeJS/")]
public class TestNodeJSController : ControllerBase
{
private readonly ILogger<TestNodeJSController> _logger;
public TestNodeJSController( ILogger<TestNodeJSController> logger)
{
_logger = logger;
}
[HttpGet("invokeTest/")]
[ProducesResponseType(typeof(object[]), 200)]
public async Task<IActionResult> InvokeTest(string testString)
{
Result? result = await StaticNodeJSService.InvokeFromStringAsync<Result>("module.exports = (callback, message) => callback(null, message);", args: new[] { "success" });
return Content(result.Message, "application/json");
}
}
public class Result
{
public string? Message { get; set; }
}
}
I would expect that once I request GET API_URL/testNodeJS/invokeTest/ from postman it would run the javascript code specified, however I am getting a 500 error with the exception below:
System.Net.Http.HttpRequestException: No such host is known.
---> System.Net.Sockets.SocketException (11001): No such host is known.
at System.Net.Http.ConnectHelper.ConnectAsync(String host, Int32 port, CancellationToken cancellationToken)
--- End of inner exception stack trace ---
at System.Net.Http.ConnectHelper.ConnectAsync(String host, Int32 port, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.ConnectAsync(HttpRequestMessage request, Boolean allowHttp2, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.CreateHttp11ConnectionAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.GetHttpConnectionAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage request, Boolean doRequestAuth, CancellationToken cancellationToken)
at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.DiagnosticsHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpClient.FinishSendAsyncUnbuffered(Task`1 sendTask, HttpRequestMessage request, CancellationTokenSource cts, Boolean disposeCts)
at Jering.Javascript.NodeJS.HttpNodeJSService.TryInvokeAsync[T](InvocationRequest invocationRequest, CancellationToken cancellationToken)
at Jering.Javascript.NodeJS.OutOfProcessNodeJSService.TryInvokeCoreAsync[T](InvocationRequest invocationRequest, CancellationToken cancellationToken)
at Jering.Javascript.NodeJS.OutOfProcessNodeJSService.InvokeFromStringAsync[T](String moduleString, String newCacheIdentifier, String exportName, Object[] args, CancellationToken cancellationToken)
at NodeJSTestAPI.Controllers.TestNodeJSController.InvokeTest(String testString) in C:\Users\nunebr\Documents\git-workspace\supply-chain-planning-tool\planning-apps-back-end\NodeJSTestAPI\Controllers\TestNodeJSController.cs:line 28
at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.TaskOfIActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeActionMethodAsync>g__Awaited|12_0(ControllerActionInvoker invoker, ValueTask`1 actionResultValueTask)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeNextActionFilterAsync>g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeInnerFilterAsync>g__Awaited|13_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeFilterPipelineAsync>g__Awaited|19_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)
HEADERS
=======
Connection: Keep-Alive
Accept: */*
Accept-Encoding: gzip, deflate, br
Host: localhost:44393
User-Agent: PostmanRuntime/7.33.0
Postman-Token: a1a9a285-d633-41dd-a6d7-e02c04d8024e
MS-ASPNETCORE-TOKEN: b0d6204e-859a-41b1-90e8-0b350697c062
X-Original-Proto: http
X-Original-For: 127.0.0.1:55630
Does anyone know what I might be missing on this issue?
On a separate note, I used to have this same code running fine in a different laptop, however since I needed to change laptop, I can't make it work again, so not sure if it could be some network configuration issue blocking my .NET API to access the invoked NodeJS.
Any help would be greatly appreciated.
Thanks in advance!
It turns out that I had previously set http_proxy and https_proxy pointing to my corporate proxy address and this was causing all http requests from .NET to be redirected to the proxy address and causing the error "No such host is known", after removing those 2 environment variables, the code is working as expected connecting to the node server.