无法使用共享同一端口的多个项目启动进程dotnet.exe

Question

I am transferring platform from MVC 5 to core 2.0, project require multiple startups which has custom domains.

My startup project's Url are :

1. https://agent.webz.local:44343/
2. https://superAgent.webz.local:44343/
3. https://client.webz.local:44343/
4. https://general.webz.local:44343/
5. https://agentAPI.webz.local:44343/

if I run project individually, then there is no error but, when I start projects in multiple startup mode, then only 1st one is working, others project returning below error.

Unable to start process C:\\Program Files\\dotnet\\dotnet.exe. The web server request failed with status code 500.Unable to start process C:\\Program Files\\dotnet\\dotnet.exe. The web server request failed with status code 503, Service Unavailable.

*Same domains are working fine with MVC-5.

if I do change the port 44343 to 4434X , then issue is not coming.

is there any way to start multiple project with same port.

Answer 1

With MVC5 you starting a single IIS Express instance on 44343 port, which handles incoming requests and redirects them to appropriate .net application. On .net Core, each you project is actually a web server (named Kestrel), so you need to bind them on different port. But actualy you can do what you want: Reverse Proxy to the rescue! Lurk more for Reverse proxy and NGinx (for example).