Revert "fbcode/gloo/common"

This reverts commit 8014f79.

gloo/common/win.cc

@@ -0,0 +1,33 @@
+/**
+ * Copyright (c) 2017-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "gloo/common/win.h"
+#include "gloo/common/logging.h"
+
+#include <mutex>
+
+namespace gloo {
+
+static std::once_flag init_flag;
+
+// The WSAStartup function must be the first Windows Sockets function
+// called by an application or DLL.
+// https://docs.microsoft.com/ru-ru/windows/win32/api/winsock/nf-winsock-wsastartup
+
+void init_winsock() {
+  std::call_once(init_flag, []() {
+    WSADATA wsa_data;
+    int res;
+    res = WSAStartup(MAKEWORD(2, 2), &wsa_data);
+    if (res != 0) {
+      GLOO_ENFORCE(false, "WSAStartup failed: ", res);
+    }
+  });
+}
+
+} // namespace gloo

gloo/common/win.h

@@ -0,0 +1,19 @@
+/**
+ * Copyright (c) 2017-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <winsock2.h>
+
+#pragma comment(lib, "Ws2_32.lib")
+
+namespace gloo {
+
+void init_winsock();
+
+} // namespace gloo