Let server rebind its own listen port quickly

luprex/core/cpp/driver-linux.cpp

@@ -120,7 +120,11 @@ public:
         err = "";
         SOCKET sock = socket(AF_INET, SOCK_STREAM, 0);
         assert(sock > 0);
-        
+
+        int enable = 1;
+        status = setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int));
+        assert(status == 0);
+
         struct sockaddr_in server;
         server.sin_family = AF_INET;
         server.sin_addr.s_addr = INADDR_ANY;