Initial server handling refactor (#9)

server/tcp_server.go

@@ -0,0 +1,46 @@
+package server
+
+import (
+	"context"
+	"errors"
+	"log"
+	"net/http"
+
+	"github.com/dcarrillo/whatismyip/internal/setting"
+)
+
+type TCPServer struct {
+	server  *http.Server
+	handler *http.Handler
+	ctx     context.Context
+}
+
+func NewTCPServer(ctx context.Context, handler *http.Handler) TCPServer {
+	return TCPServer{
+		handler: handler,
+		ctx:     ctx,
+	}
+}
+
+func (t *TCPServer) Start() {
+	t.server = &http.Server{
+		Addr:         setting.App.BindAddress,
+		Handler:      *t.handler,
+		ReadTimeout:  setting.App.Server.ReadTimeout,
+		WriteTimeout: setting.App.Server.WriteTimeout,
+	}
+
+	log.Printf("Starting TCP server listening on %s", setting.App.BindAddress)
+	go func() {
+		if err := t.server.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
+			log.Fatal(err)
+		}
+	}()
+	log.Printf("Stopping TCP server...")
+}
+
+func (t *TCPServer) Stop() {
+	if err := t.server.Shutdown(t.ctx); err != nil {
+		log.Printf("TCP server forced to shutdown: %s", err)
+	}
+}