+#ifdef _WIN32
+static void
+do_winsock_start(void)
+{
+ WSADATA wsaData;
+ int error;
+
+ error = WSAStartup(MAKEWORD(2, 2), &wsaData);
+ if (error != 0) {
+ VLOG_FATAL("WSAStartup failed: %s", sock_strerror(sock_errno()));
+ }
+}
+
+static void
+winsock_start(void)
+{
+ static pthread_once_t once = PTHREAD_ONCE_INIT;
+ pthread_once(&once, do_winsock_start);
+}
+#endif
+