diff --git a/server.c b/server.c
index e8e90ee..964804c 100644
--- a/server.c
+++ b/server.c
@@ -136,12 +136,17 @@ int main(int argc, const char *argv[]){
         fprintf(stderr,"port invalid");
         return 1;
     }
-    
     sock = socket(AF_INET,SOCK_STREAM,0);
     if(sock < 0){
         perror("sock create fail");
         return 1;
     }
+    {
+        int option = 1;
+        if(setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,&option,sizeof(option)) < 0){
+            perror("setsockopt");
+        }
+    }
     addr.sin_addr.s_addr = inet_addr(server_name);
     addr.sin_family = AF_INET;
     addr.sin_port = htons(server_port);