add local ip

cmd/evening_detective_server/main.go

@@ -8,6 +8,7 @@ import (
 	"evening_detective_server/internal/modules/cleaner"
 	"evening_detective_server/internal/modules/email_sender"
 	"evening_detective_server/internal/modules/file_storage"
+	"evening_detective_server/internal/modules/network_utils"
 	"evening_detective_server/internal/modules/password_generator"
 	"evening_detective_server/internal/modules/processor_jwt"
 	"evening_detective_server/internal/modules/scenario_archive"
@@ -335,9 +336,22 @@ func main() {
 
 	log.Println("Serving gRPC-Gateway on http://0.0.0.0:8090")
 	log.Println("Serving docs on http://0.0.0.0:8090/docs")
+	logLocalAddresses()
 	log.Fatalln(gwServer.ListenAndServe())
 }
 
+func logLocalAddresses() {
+	addrs, err := network_utils.GetLocalIPv4Addresses()
+	if err != nil {
+		log.Printf("Unable to detect local network address: %v", err)
+		return
+	}
+
+	for _, ip := range addrs {
+		log.Printf("Local network: http://%s:8090 (docs: http://%s:8090/docs/)", ip, ip)
+	}
+}
+
 func cors(h http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Access-Control-Allow-Origin", "*")

internal/modules/network_utils/addresses.go

@@ -0,0 +1,27 @@
+package network_utils
+
+import "net"
+
+// GetLocalIPv4Addresses returns non-loopback IPv4 addresses of the host.
+func GetLocalIPv4Addresses() ([]string, error) {
+	addrs, err := net.InterfaceAddrs()
+	if err != nil {
+		return nil, err
+	}
+
+	var result []string
+	for _, addr := range addrs {
+		var ip net.IP
+		switch addr := addr.(type) {
+		case *net.IPNet:
+			ip = addr.IP
+		case *net.IPAddr:
+			ip = addr.IP
+		}
+		if ip == nil || ip.IsLoopback() || ip.To4() == nil {
+			continue
+		}
+		result = append(result, ip.String())
+	}
+	return result, nil
+}