Repo created

TMessagesProj/jni/voip/webrtc/rtc_base/fake_mdns_responder.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_FAKE_MDNS_RESPONDER_H_
+#define RTC_BASE_FAKE_MDNS_RESPONDER_H_
+
+#include <map>
+#include <memory>
+#include <string>
+
+#include "absl/strings/string_view.h"
+#include "rtc_base/ip_address.h"
+#include "rtc_base/mdns_responder_interface.h"
+#include "rtc_base/thread.h"
+
+namespace webrtc {
+
+// This class posts tasks on the given `thread` to invoke callbacks. It's the
+// callback's responsibility to be aware of potential destruction of state it
+// depends on, e.g., using WeakPtrFactory or PendingTaskSafetyFlag.
+class FakeMdnsResponder : public MdnsResponderInterface {
+ public:
+  explicit FakeMdnsResponder(rtc::Thread* thread) : thread_(thread) {}
+  ~FakeMdnsResponder() = default;
+
+  void CreateNameForAddress(const rtc::IPAddress& addr,
+                            NameCreatedCallback callback) override {
+    std::string name;
+    if (addr_name_map_.find(addr) != addr_name_map_.end()) {
+      name = addr_name_map_[addr];
+    } else {
+      name = std::to_string(next_available_id_++) + ".local";
+      addr_name_map_[addr] = name;
+    }
+    thread_->PostTask([callback, addr, name]() { callback(addr, name); });
+  }
+  void RemoveNameForAddress(const rtc::IPAddress& addr,
+                            NameRemovedCallback callback) override {
+    auto it = addr_name_map_.find(addr);
+    if (it != addr_name_map_.end()) {
+      addr_name_map_.erase(it);
+    }
+    bool result = it != addr_name_map_.end();
+    thread_->PostTask([callback, result]() { callback(result); });
+  }
+
+  rtc::IPAddress GetMappedAddressForName(absl::string_view name) const {
+    for (const auto& addr_name_pair : addr_name_map_) {
+      if (addr_name_pair.second == name) {
+        return addr_name_pair.first;
+      }
+    }
+    return rtc::IPAddress();
+  }
+
+ private:
+  uint32_t next_available_id_ = 0;
+  std::map<rtc::IPAddress, std::string> addr_name_map_;
+  rtc::Thread* const thread_;
+};
+
+}  // namespace webrtc
+
+#endif  // RTC_BASE_FAKE_MDNS_RESPONDER_H_