Join a game

1 files changed, 14 insertions, 0 deletions

diff --git a/network/network.go b/network/network.go
index 322487b..5ab2dac 100644
--- a/network/network.go
+++ b/network/network.go
@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"log/slog"
+	"math/rand"
 	"net"
 	"sync"
 	"time"
@@ -224,3 +225,16 @@ func GetOutboundIP() net.IP {
 
 	return localAddr.IP
 }
+
+func GetRandomAvailablePort() (int, error) {
+	for i := 0; i < 100; i += 1 {
+		port := rand.Intn(65535-1024) + 1024
+		addr := fmt.Sprintf(":%d", port)
+		ln, err := net.Listen("tcp", addr)
+		if err == nil {
+			defer ln.Close()
+			return port, nil
+		}
+	}
+	return 0, fmt.Errorf("failed to find an available port after multiple attempts")
+}