Add http server initial setup

main.go

@@ -0,0 +1,82 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+)
+
+const keyServerAddr string = "adm-server"
+
+func main() {
+	mux := http.NewServeMux()
+
+	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		ctx := r.Context()
+
+		fmt.Printf("%s: got / request\n", ctx.Value((keyServerAddr)))
+
+		path := r.URL.Path
+
+		if path != "/" {
+			w.WriteHeader(404)
+			io.WriteString(w, "Not found")
+			return
+		}
+
+		io.WriteString(w, "This is the index route")
+	})
+
+	mux.HandleFunc("/test", func(w http.ResponseWriter, r *http.Request) {
+		ctx := r.Context()
+
+		fmt.Printf("%s: got /test request\n", ctx.Value((keyServerAddr)))
+
+		io.WriteString(w, "Test")
+	})
+
+	ctx, cancelCtx := context.WithCancel(context.Background())
+
+	serverOne := &http.Server{
+		Addr:    ":3000",
+		Handler: mux,
+		BaseContext: func(l net.Listener) context.Context {
+			ctx = context.WithValue(ctx, keyServerAddr, l.Addr().String())
+			return ctx
+		},
+	}
+
+	serverTwo := &http.Server{
+		Addr:    ":3001",
+		Handler: mux,
+		BaseContext: func(l net.Listener) context.Context {
+			ctx = context.WithValue(ctx, keyServerAddr, l.Addr().String())
+			return ctx
+		},
+	}
+
+	go func() {
+		err := serverOne.ListenAndServe()
+		if errors.Is(err, http.ErrServerClosed) {
+			fmt.Printf("server one closed\n")
+		} else if err != nil {
+			fmt.Printf("error listening for server one: %s\n", err)
+		}
+		cancelCtx()
+	}()
+
+	go func() {
+		err := serverTwo.ListenAndServe()
+		if errors.Is(err, http.ErrServerClosed) {
+			fmt.Printf("server two closed\n")
+		} else if err != nil {
+			fmt.Printf("error listening for server two: %s\n", err)
+		}
+		cancelCtx()
+	}()
+
+	<-ctx.Done()
+}