Repo created

TMessagesProj/jni/voip/webrtc/rtc_base/net_test_helpers.cc

@@ -0,0 +1,111 @@
+/*
+ *  Copyright 2023 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "rtc_base/net_test_helpers.h"
+
+#include <memory>
+#include <string>
+
+#if defined(WEBRTC_WIN)
+#include <ws2spi.h>
+#include <ws2tcpip.h>
+
+#include "rtc_base/win/windows_version.h"
+#endif
+#if defined(WEBRTC_POSIX) && !defined(__native_client__)
+#include <arpa/inet.h>
+#if defined(WEBRTC_ANDROID)
+#include "rtc_base/ifaddrs_android.h"
+#else
+#include <ifaddrs.h>
+#endif
+#endif  // defined(WEBRTC_POSIX) && !defined(__native_client__)
+
+namespace rtc {
+
+bool HasIPv4Enabled() {
+#if defined(WEBRTC_POSIX) && !defined(__native_client__)
+  bool has_ipv4 = false;
+  struct ifaddrs* ifa;
+  if (getifaddrs(&ifa) < 0) {
+    return false;
+  }
+  for (struct ifaddrs* cur = ifa; cur != nullptr; cur = cur->ifa_next) {
+    if (cur->ifa_addr != nullptr && cur->ifa_addr->sa_family == AF_INET) {
+      has_ipv4 = true;
+      break;
+    }
+  }
+  freeifaddrs(ifa);
+  return has_ipv4;
+#else
+  return true;
+#endif
+}
+
+bool HasIPv6Enabled() {
+#if defined(WINUWP)
+  // WinUWP always has IPv6 capability.
+  return true;
+#elif defined(WEBRTC_WIN)
+  if (rtc::rtc_win::GetVersion() >= rtc::rtc_win::Version::VERSION_VISTA) {
+    return true;
+  }
+  if (rtc::rtc_win::GetVersion() < rtc::rtc_win::Version::VERSION_XP) {
+    return false;
+  }
+  DWORD protbuff_size = 4096;
+  std::unique_ptr<char[]> protocols;
+  LPWSAPROTOCOL_INFOW protocol_infos = nullptr;
+  int requested_protocols[2] = {AF_INET6, 0};
+
+  int err = 0;
+  int ret = 0;
+  // Check for protocols in a do-while loop until we provide a buffer large
+  // enough. (WSCEnumProtocols sets protbuff_size to its desired value).
+  // It is extremely unlikely that this will loop more than once.
+  do {
+    protocols.reset(new char[protbuff_size]);
+    protocol_infos = reinterpret_cast<LPWSAPROTOCOL_INFOW>(protocols.get());
+    ret = WSCEnumProtocols(requested_protocols, protocol_infos, &protbuff_size,
+                           &err);
+  } while (ret == SOCKET_ERROR && err == WSAENOBUFS);
+
+  if (ret == SOCKET_ERROR) {
+    return false;
+  }
+
+  // Even if ret is positive, check specifically for IPv6.
+  // Non-IPv6 enabled WinXP will still return a RAW protocol.
+  for (int i = 0; i < ret; ++i) {
+    if (protocol_infos[i].iAddressFamily == AF_INET6) {
+      return true;
+    }
+  }
+  return false;
+#elif defined(WEBRTC_POSIX) && !defined(__native_client__)
+  bool has_ipv6 = false;
+  struct ifaddrs* ifa;
+  if (getifaddrs(&ifa) < 0) {
+    return false;
+  }
+  for (struct ifaddrs* cur = ifa; cur != nullptr; cur = cur->ifa_next) {
+    if (cur->ifa_addr != nullptr && cur->ifa_addr->sa_family == AF_INET6) {
+      has_ipv6 = true;
+      break;
+    }
+  }
+  freeifaddrs(ifa);
+  return has_ipv6;
+#else
+  return true;
+#endif
+}
+}  // namespace rtc