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SSR not working on initial request when using Kestrel #1530

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opened 2025-08-09 17:20:29 +00:00 by fergalmoran · 0 comments
fergalmoran commented 2025-08-09 17:20:29 +00:00
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Originally created by @antmdvs on 7/7/2016

Repro steps:

  1. use the yeoman generator to create a new react-redux app
  2. dotnet run
  3. request http://localhost:5000/fetchdata

Expected result:
Weather Forecast data is displayed in the grid

Actual result:
"Loading..." is displayed in the grid

I haven't been able to repro this when running on IIS Express.

Project rrcore1 (.NETCoreApp,Version=v1.0) was previously compiled. Skipping compilation.
Hosting environment: Production
Content root path: C:\Git\rrcore1
Now listening on: http://localhost:5000
Application started. Press Ctrl+C to shut down.
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/fetchdata  
info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[1]
      Executing action method Rrcore1.Controllers.HomeController.Index (rrcore1) with arguments () - ModelState is Valid
info: Microsoft.AspNetCore.Mvc.ViewFeatures.Internal.ViewResultExecutor[1]
      Executing ViewResult, running view at path /Views/Home/Index.cshtml.
info: Microsoft.Extensions.DependencyInjection.DataProtectionServices[0]
      User profile is available. Using 'C:\Users\e5006399\AppData\Local\ASP.NET\DataProtection-Keys' as key repository and Windows DPAPI to encrypt keys at rest.
[Node] ts-loader: Using typescript@1.8.10 and C:\Git\rrcore1\tsconfig.json
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/api/SampleData/WeatherForecasts?startDateIndex=0  
info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[1]
      Executing action method Rrcore1.Controllers.SampleDataController.WeatherForecasts (rrcore1) with arguments (0) - ModelState is Valid
info: Microsoft.AspNetCore.Mvc.Internal.ObjectResultExecutor[1]
      Executing ObjectResult, writing value Microsoft.AspNetCore.Mvc.ControllerContext.
info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[2]
      Executed action Rrcore1.Controllers.SampleDataController.WeatherForecasts (rrcore1) in 150.6004ms
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 162.991ms 200 application/json; charset=utf-8
info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[2]
      Executed action Rrcore1.Controllers.HomeController.Index (rrcore1) in 7659.4053ms
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 7914.9728ms 200 text/html; charset=utf-8
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/dist/vendor.css?v=ALPkvIaKC1T2242cKAFhm3Sn3ig2huZNWkXQa7RUv0c  
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/dist/site.css  
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/dist/main.js  
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/dist/vendor.js?v=sH3XNFYZpAM_75zY7fmOcjZQvi27vJH0-pm_ZPIMr64  
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 3.6947ms 404 
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 3.0229ms 404 
info: Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware[6]
      The file /dist/vendor.js was not modified
info: Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware[6]
      The file /dist/vendor.css was not modified
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 15.3442ms 304 text/css
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 14.4214ms 304 application/javascript
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/dist/main.js  
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 0.3254ms 404 
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1]
      Request starting HTTP/1.1 GET http://localhost:5000/favicon.ico  
info: Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware[2]
      Sending file. Request path: '/favicon.ico'. Physical path: 'C:\Git\rrcore1\wwwroot\favicon.ico'
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 17.0513ms 200 image/x-icon
*Originally created by @antmdvs on 7/7/2016* Repro steps: 1. use the yeoman generator to create a new react-redux app 2. dotnet run 3. request http://localhost:5000/fetchdata Expected result: Weather Forecast data is displayed in the grid Actual result: "Loading..." is displayed in the grid I haven't been able to repro this when running on IIS Express. ``` Project rrcore1 (.NETCoreApp,Version=v1.0) was previously compiled. Skipping compilation. Hosting environment: Production Content root path: C:\Git\rrcore1 Now listening on: http://localhost:5000 Application started. Press Ctrl+C to shut down. info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1] Request starting HTTP/1.1 GET http://localhost:5000/fetchdata info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[1] Executing action method Rrcore1.Controllers.HomeController.Index (rrcore1) with arguments () - ModelState is Valid info: Microsoft.AspNetCore.Mvc.ViewFeatures.Internal.ViewResultExecutor[1] Executing ViewResult, running view at path /Views/Home/Index.cshtml. info: Microsoft.Extensions.DependencyInjection.DataProtectionServices[0] User profile is available. Using 'C:\Users\e5006399\AppData\Local\ASP.NET\DataProtection-Keys' as key repository and Windows DPAPI to encrypt keys at rest. [Node] ts-loader: Using typescript@1.8.10 and C:\Git\rrcore1\tsconfig.json info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1] Request starting HTTP/1.1 GET http://localhost:5000/api/SampleData/WeatherForecasts?startDateIndex=0 info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[1] Executing action method Rrcore1.Controllers.SampleDataController.WeatherForecasts (rrcore1) with arguments (0) - ModelState is Valid info: Microsoft.AspNetCore.Mvc.Internal.ObjectResultExecutor[1] Executing ObjectResult, writing value Microsoft.AspNetCore.Mvc.ControllerContext. info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[2] Executed action Rrcore1.Controllers.SampleDataController.WeatherForecasts (rrcore1) in 150.6004ms info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] Request finished in 162.991ms 200 application/json; charset=utf-8 info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[2] Executed action Rrcore1.Controllers.HomeController.Index (rrcore1) in 7659.4053ms info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] Request finished in 7914.9728ms 200 text/html; charset=utf-8 info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1] Request starting HTTP/1.1 GET http://localhost:5000/dist/vendor.css?v=ALPkvIaKC1T2242cKAFhm3Sn3ig2huZNWkXQa7RUv0c info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1] Request starting HTTP/1.1 GET http://localhost:5000/dist/site.css info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1] Request starting HTTP/1.1 GET http://localhost:5000/dist/main.js info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1] Request starting HTTP/1.1 GET http://localhost:5000/dist/vendor.js?v=sH3XNFYZpAM_75zY7fmOcjZQvi27vJH0-pm_ZPIMr64 info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] Request finished in 3.6947ms 404 info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] Request finished in 3.0229ms 404 info: Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware[6] The file /dist/vendor.js was not modified info: Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware[6] The file /dist/vendor.css was not modified info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] Request finished in 15.3442ms 304 text/css info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] Request finished in 14.4214ms 304 application/javascript info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1] Request starting HTTP/1.1 GET http://localhost:5000/dist/main.js info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] Request finished in 0.3254ms 404 info: Microsoft.AspNetCore.Hosting.Internal.WebHost[1] Request starting HTTP/1.1 GET http://localhost:5000/favicon.ico info: Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware[2] Sending file. Request path: '/favicon.ico'. Physical path: 'C:\Git\rrcore1\wwwroot\favicon.ico' info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2] Request finished in 17.0513ms 200 image/x-icon ```
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