Repo created

TMessagesProj/jni/voip/webrtc/rtc_base/mdns_responder_interface.h

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+/*
+ *  Copyright 2018 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.
+ */
+
+#ifndef RTC_BASE_MDNS_RESPONDER_INTERFACE_H_
+#define RTC_BASE_MDNS_RESPONDER_INTERFACE_H_
+
+#include <functional>
+#include <string>
+
+#include "absl/strings/string_view.h"
+#include "rtc_base/ip_address.h"
+
+namespace webrtc {
+
+// Defines an mDNS responder that can be used in ICE candidate gathering, where
+// the local IP addresses of host candidates are replaced by mDNS hostnames.
+class MdnsResponderInterface {
+ public:
+  using NameCreatedCallback =
+      std::function<void(const rtc::IPAddress&, absl::string_view)>;
+  using NameRemovedCallback = std::function<void(bool)>;
+
+  MdnsResponderInterface() = default;
+  virtual ~MdnsResponderInterface() = default;
+
+  // Asynchronously creates and returns a new name via `callback` for `addr` if
+  // there is no name mapped to it by this responder, and initializes the
+  // reference count of this name to one. Otherwise the existing name mapped to
+  // `addr` is returned and its reference count is incremented by one.
+  virtual void CreateNameForAddress(const rtc::IPAddress& addr,
+                                    NameCreatedCallback callback) = 0;
+  // Decrements the reference count of the mapped name of `addr`, if
+  // there is a map created previously via CreateNameForAddress; asynchronously
+  // removes the association between `addr` and its mapped name, and returns
+  // true via `callback` if the decremented reference count reaches zero.
+  // Otherwise no operation is done and false is returned via `callback`
+  // asynchronously.
+  virtual void RemoveNameForAddress(const rtc::IPAddress& addr,
+                                    NameRemovedCallback callback) = 0;
+};
+
+}  // namespace webrtc
+
+#endif  // RTC_BASE_MDNS_RESPONDER_INTERFACE_H_