Server

The Go standard library makes it easy to implement a simple server. You just have to assemble the pieces in your code.

The http package already provides an http.Server for you. It needs an address, Addr, on which to listen for incoming requests. It also needs a Handler to handle incoming requests. We'll use an http.ServeMux to route incoming requests to its handlers. Because the ServeMux won't have any routes yet, it will respond to every request with 404 Not Found.

Start the server by calling its ListenAndServe method. It listens for incoming requests at the server's Addr and passes each one to the Handler.

Being a programmer means reading documentation and searching for examples. We're already telling you everything you need to know to build Chirpy, but we don't want to rob you of valuable practice reading the docs and learning from examples. Be sure to read the http package's overview as a primer.

Build and run a server that listens on port 8080 and responds to every request with 404 Not Found.

1. Delete the contents of the main function in the main.go file and replace it with your server.
2. Create a new http.ServeMux to route requests.
3. Create a new http.Server struct.
   • Use your ServeMux as the server's Handler.
   • Set the .Addr field to ":8080".
4. Use the server's ListenAndServe method to start the server.
5. Build and run your binary. You'll need to do this each time you change your code.

   go build -o out && ./out
   

6. Open http://localhost:8080 in your browser. You should see a 404 error because the ServeMux doesn't have any routes yet. Don't worry, that's expected right now!

In another terminal window, while your server is still running, run and submit the CLI tests.

If the bootdev CLI requests a URL other than localhost:8080, your ~/.bootdev.yaml file may have the base_url set from a different course. Run bootdev config base_url --reset before running the tests again.