Issue #1390 - Get rid of the Presentation API

1 files changed, 0 insertions, 1249 deletions

diff --git a/dom/presentation/provider/MulticastDNSDeviceProvider.cpp b/dom/presentation/provider/MulticastDNSDeviceProvider.cpp
deleted file mode 100644
index 0cab915ac..000000000
--- a/dom/presentation/provider/MulticastDNSDeviceProvider.cpp
+++ /dev/null
@@ -1,1249 +0,0 @@
-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "MulticastDNSDeviceProvider.h"
-
-#include "DeviceProviderHelpers.h"
-#include "MainThreadUtils.h"
-#include "mozilla/Logging.h"
-#include "mozilla/Preferences.h"
-#include "mozilla/Services.h"
-#include "mozilla/Unused.h"
-#include "nsComponentManagerUtils.h"
-#include "nsIObserverService.h"
-#include "nsIWritablePropertyBag2.h"
-#include "nsServiceManagerUtils.h"
-#include "nsTCPDeviceInfo.h"
-#include "nsThreadUtils.h"
-
-#ifdef MOZ_WIDGET_ANDROID
-#include "nsIPropertyBag2.h"
-#endif // MOZ_WIDGET_ANDROID
-
-#define PREF_PRESENTATION_DISCOVERY "dom.presentation.discovery.enabled"
-#define PREF_PRESENTATION_DISCOVERY_TIMEOUT_MS "dom.presentation.discovery.timeout_ms"
-#define PREF_PRESENTATION_DISCOVERABLE "dom.presentation.discoverable"
-#define PREF_PRESENTATION_DISCOVERABLE_ENCRYPTED "dom.presentation.discoverable.encrypted"
-#define PREF_PRESENTATION_DISCOVERABLE_RETRY_MS "dom.presentation.discoverable.retry_ms"
-#define PREF_PRESENTATION_DEVICE_NAME "dom.presentation.device.name"
-
-#define SERVICE_TYPE "_presentation-ctrl._tcp"
-#define PROTOCOL_VERSION_TAG "version"
-#define CERT_FINGERPRINT_TAG "certFingerprint"
-
-static mozilla::LazyLogModule sMulticastDNSProviderLogModule("MulticastDNSDeviceProvider");
-
-#undef LOG_I
-#define LOG_I(...) MOZ_LOG(sMulticastDNSProviderLogModule, mozilla::LogLevel::Debug, (__VA_ARGS__))
-#undef LOG_E
-#define LOG_E(...) MOZ_LOG(sMulticastDNSProviderLogModule, mozilla::LogLevel::Error, (__VA_ARGS__))
-
-namespace mozilla {
-namespace dom {
-namespace presentation {
-
-static const char* kObservedPrefs[] = {
-  PREF_PRESENTATION_DISCOVERY,
-  PREF_PRESENTATION_DISCOVERY_TIMEOUT_MS,
-  PREF_PRESENTATION_DISCOVERABLE,
-  PREF_PRESENTATION_DEVICE_NAME,
-  nullptr
-};
-
-namespace {
-
-#ifdef MOZ_WIDGET_ANDROID
-static void
-GetAndroidDeviceName(nsACString& aRetVal)
-{
-  nsCOMPtr<nsIPropertyBag2> infoService = do_GetService("@mozilla.org/system-info;1");
-  MOZ_ASSERT(infoService, "Could not find a system info service");
-
-  Unused << NS_WARN_IF(NS_FAILED(infoService->GetPropertyAsACString(
-                                   NS_LITERAL_STRING("device"), aRetVal)));
-}
-#endif // MOZ_WIDGET_ANDROID
-
-} //anonymous namespace
-
-/**
- * This wrapper is used to break circular-reference problem.
- */
-class DNSServiceWrappedListener final
-  : public nsIDNSServiceDiscoveryListener
-  , public nsIDNSRegistrationListener
-  , public nsIDNSServiceResolveListener
-  , public nsIPresentationControlServerListener
-{
-public:
-  NS_DECL_ISUPPORTS
-  NS_FORWARD_SAFE_NSIDNSSERVICEDISCOVERYLISTENER(mListener)
-  NS_FORWARD_SAFE_NSIDNSREGISTRATIONLISTENER(mListener)
-  NS_FORWARD_SAFE_NSIDNSSERVICERESOLVELISTENER(mListener)
-  NS_FORWARD_SAFE_NSIPRESENTATIONCONTROLSERVERLISTENER(mListener)
-
-  explicit DNSServiceWrappedListener() = default;
-
-  nsresult SetListener(MulticastDNSDeviceProvider* aListener)
-  {
-    mListener = aListener;
-    return NS_OK;
-  }
-
-private:
-  virtual ~DNSServiceWrappedListener() = default;
-
-  MulticastDNSDeviceProvider* mListener = nullptr;
-};
-
-NS_IMPL_ISUPPORTS(DNSServiceWrappedListener,
-                  nsIDNSServiceDiscoveryListener,
-                  nsIDNSRegistrationListener,
-                  nsIDNSServiceResolveListener,
-                  nsIPresentationControlServerListener)
-
-NS_IMPL_ISUPPORTS(MulticastDNSDeviceProvider,
-                  nsIPresentationDeviceProvider,
-                  nsIDNSServiceDiscoveryListener,
-                  nsIDNSRegistrationListener,
-                  nsIDNSServiceResolveListener,
-                  nsIPresentationControlServerListener,
-                  nsIObserver)
-
-MulticastDNSDeviceProvider::~MulticastDNSDeviceProvider()
-{
-  Uninit();
-}
-
-nsresult
-MulticastDNSDeviceProvider::Init()
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  if (mInitialized) {
-    return NS_OK;
-  }
-
-  nsresult rv;
-
-  mMulticastDNS = do_GetService(DNSSERVICEDISCOVERY_CONTRACT_ID, &rv);
-  if (NS_WARN_IF(NS_FAILED(rv))) {
-    return rv;
-  }
-
-  mWrappedListener = new DNSServiceWrappedListener();
-  if (NS_WARN_IF(NS_FAILED(rv = mWrappedListener->SetListener(this)))) {
-    return rv;
-  }
-
-  mPresentationService = do_CreateInstance(PRESENTATION_CONTROL_SERVICE_CONTACT_ID, &rv);
-  if (NS_WARN_IF(NS_FAILED(rv))) {
-    return rv;
-  }
-
-  mDiscoveryTimer = do_CreateInstance(NS_TIMER_CONTRACTID, &rv);
-  if (NS_WARN_IF(NS_FAILED(rv))) {
-    return rv;
-  }
-
-  mServerRetryTimer = do_CreateInstance(NS_TIMER_CONTRACTID, &rv);
-  if (NS_WARN_IF(NS_FAILED(rv))) {
-    return rv;
-  }
-  Preferences::AddStrongObservers(this, kObservedPrefs);
-
-  mDiscoveryEnabled = Preferences::GetBool(PREF_PRESENTATION_DISCOVERY);
-  mDiscoveryTimeoutMs = Preferences::GetUint(PREF_PRESENTATION_DISCOVERY_TIMEOUT_MS);
-  mDiscoverable = Preferences::GetBool(PREF_PRESENTATION_DISCOVERABLE);
-  mDiscoverableEncrypted = Preferences::GetBool(PREF_PRESENTATION_DISCOVERABLE_ENCRYPTED);
-  mServerRetryMs = Preferences::GetUint(PREF_PRESENTATION_DISCOVERABLE_RETRY_MS);
-  mServiceName = Preferences::GetCString(PREF_PRESENTATION_DEVICE_NAME);
-
-#ifdef MOZ_WIDGET_ANDROID
-  // FIXME: Bug 1185806 - Provide a common device name setting.
-  if (mServiceName.IsEmpty()) {
-    GetAndroidDeviceName(mServiceName);
-    Unused << Preferences::SetCString(PREF_PRESENTATION_DEVICE_NAME, mServiceName);
-  }
-#endif // MOZ_WIDGET_ANDROID
-
-  Unused << mPresentationService->SetId(mServiceName);
-
-  if (mDiscoveryEnabled && NS_WARN_IF(NS_FAILED(rv = ForceDiscovery()))) {
-    return rv;
-  }
-
-  if (mDiscoverable && NS_WARN_IF(NS_FAILED(rv = StartServer()))) {
-    return rv;
-  }
-
-  mInitialized = true;
-  return NS_OK;
-}
-
-nsresult
-MulticastDNSDeviceProvider::Uninit()
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  if (!mInitialized) {
-    return NS_OK;
-  }
-
-  ClearDevices();
-
-  Preferences::RemoveObservers(this, kObservedPrefs);
-
-  StopDiscovery(NS_OK);
-  StopServer();
-
-  mMulticastDNS = nullptr;
-
-  if (mWrappedListener) {
-    mWrappedListener->SetListener(nullptr);
-    mWrappedListener = nullptr;
-  }
-
-  mInitialized = false;
-  return NS_OK;
-}
-
-nsresult
-MulticastDNSDeviceProvider::StartServer()
-{
-  LOG_I("StartServer: %s (%d)", mServiceName.get(), mDiscoverable);
-  MOZ_ASSERT(NS_IsMainThread());
-
-  if (!mDiscoverable) {
-    return NS_OK;
-  }
-
-  nsresult rv;
-
-  uint16_t servicePort;
-  if (NS_WARN_IF(NS_FAILED(rv = mPresentationService->GetPort(&servicePort)))) {
-    return rv;
-  }
-
-  /**
-    * If |servicePort| is non-zero, it means PresentationControlService is running.
-    * Otherwise, we should make it start serving.
-    */
-  if (servicePort) {
-    return RegisterMDNSService();
-  }
-
-  if (NS_WARN_IF(NS_FAILED(rv = mPresentationService->SetListener(mWrappedListener)))) {
-    return rv;
-  }
-
-  AbortServerRetry();
-
-  if (NS_WARN_IF(NS_FAILED(rv = mPresentationService->StartServer(mDiscoverableEncrypted, 0)))) {
-    return rv;
-  }
-
-  return NS_OK;
-}
-
-nsresult
-MulticastDNSDeviceProvider::StopServer()
-{
-  LOG_I("StopServer: %s", mServiceName.get());
-  MOZ_ASSERT(NS_IsMainThread());
-
-  UnregisterMDNSService(NS_OK);
-
-  AbortServerRetry();
-
-  if (mPresentationService) {
-    mPresentationService->SetListener(nullptr);
-    mPresentationService->Close();
-  }
-
-  return NS_OK;
-}
-
-void
-MulticastDNSDeviceProvider::AbortServerRetry()
-{
-  if (mIsServerRetrying) {
-    mIsServerRetrying = false;
-    mServerRetryTimer->Cancel();
-  }
-}
-
-nsresult
-MulticastDNSDeviceProvider::RegisterMDNSService()
-{
-  LOG_I("RegisterMDNSService: %s", mServiceName.get());
-
-  if (!mDiscoverable) {
-    return NS_OK;
-  }
-
-  // Cancel on going service registration.
-  UnregisterMDNSService(NS_OK);
-
-  nsresult rv;
-
-  uint16_t servicePort;
-  if (NS_FAILED(rv = mPresentationService->GetPort(&servicePort)) ||
-      !servicePort) {
-    // Abort service registration if server port is not available.
-    return rv;
-  }
-
-  /**
-   * Register the presentation control channel server as an mDNS service.
-   */
-  nsCOMPtr<nsIDNSServiceInfo> serviceInfo =
-    do_CreateInstance(DNSSERVICEINFO_CONTRACT_ID, &rv);
-  if (NS_WARN_IF(NS_FAILED(rv))) {
-    return rv;
-  }
-  if (NS_WARN_IF(NS_FAILED(rv = serviceInfo->SetServiceType(
-      NS_LITERAL_CSTRING(SERVICE_TYPE))))) {
-    return rv;
-  }
-  if (NS_WARN_IF(NS_FAILED(rv = serviceInfo->SetServiceName(mServiceName)))) {
-    return rv;
-  }
-  if (NS_WARN_IF(NS_FAILED(rv = serviceInfo->SetPort(servicePort)))) {
-    return rv;
-  }
-
-  nsCOMPtr<nsIWritablePropertyBag2> propBag =
-    do_CreateInstance("@mozilla.org/hash-property-bag;1");
-  MOZ_ASSERT(propBag);
-
-  uint32_t version;
-  rv = mPresentationService->GetVersion(&version);
-  MOZ_ASSERT(NS_SUCCEEDED(rv));
-
-  rv = propBag->SetPropertyAsUint32(NS_LITERAL_STRING(PROTOCOL_VERSION_TAG),
-                                    version);
-  MOZ_ASSERT(NS_SUCCEEDED(rv));
-
-  if (mDiscoverableEncrypted) {
-    nsAutoCString certFingerprint;
-    rv = mPresentationService->GetCertFingerprint(certFingerprint);
-    MOZ_ASSERT(NS_SUCCEEDED(rv));
-
-    rv = propBag->SetPropertyAsACString(NS_LITERAL_STRING(CERT_FINGERPRINT_TAG),
-                                        certFingerprint);
-    MOZ_ASSERT(NS_SUCCEEDED(rv));
-  }
-
-  if (NS_WARN_IF(NS_FAILED(rv = serviceInfo->SetAttributes(propBag)))) {
-    return rv;
-  }
-
-  return mMulticastDNS->RegisterService(serviceInfo,
-                                        mWrappedListener,
-                                        getter_AddRefs(mRegisterRequest));
-}
-
-nsresult
-MulticastDNSDeviceProvider::UnregisterMDNSService(nsresult aReason)
-{
-  LOG_I("UnregisterMDNSService: %s (0x%08x)", mServiceName.get(), aReason);
-  MOZ_ASSERT(NS_IsMainThread());
-
-  if (mRegisterRequest) {
-    mRegisterRequest->Cancel(aReason);
-    mRegisterRequest = nullptr;
-  }
-
-  return NS_OK;
-}
-
-nsresult
-MulticastDNSDeviceProvider::StopDiscovery(nsresult aReason)
-{
-  LOG_I("StopDiscovery (0x%08x)", aReason);
-
-  MOZ_ASSERT(NS_IsMainThread());
-  MOZ_ASSERT(mDiscoveryTimer);
-
-  Unused << mDiscoveryTimer->Cancel();
-
-  if (mDiscoveryRequest) {
-    mDiscoveryRequest->Cancel(aReason);
-    mDiscoveryRequest = nullptr;
-  }
-
-  return NS_OK;
-}
-
-nsresult
-MulticastDNSDeviceProvider::Connect(Device* aDevice,
-                                    nsIPresentationControlChannel** aRetVal)
-{
-  MOZ_ASSERT(aDevice);
-  MOZ_ASSERT(mPresentationService);
-
-  RefPtr<TCPDeviceInfo> deviceInfo = new TCPDeviceInfo(aDevice->Id(),
-                                                       aDevice->Address(),
-                                                       aDevice->Port(),
-                                                       aDevice->CertFingerprint());
-
-  return mPresentationService->Connect(deviceInfo, aRetVal);
-}
-
-bool
-MulticastDNSDeviceProvider::IsCompatibleServer(nsIDNSServiceInfo* aServiceInfo)
-{
-  MOZ_ASSERT(aServiceInfo);
-
-  nsCOMPtr<nsIPropertyBag2> propBag;
-  if (NS_WARN_IF(NS_FAILED(
-          aServiceInfo->GetAttributes(getter_AddRefs(propBag)))) || !propBag) {
-    return false;
-  }
-
-  uint32_t remoteVersion;
-  if (NS_WARN_IF(NS_FAILED(
-          propBag->GetPropertyAsUint32(NS_LITERAL_STRING(PROTOCOL_VERSION_TAG),
-                                       &remoteVersion)))) {
-    return false;
-  }
-
-  bool isCompatible = false;
-  Unused << NS_WARN_IF(NS_FAILED(
-                mPresentationService->IsCompatibleServer(remoteVersion,
-                                                         &isCompatible)));
-
-  return isCompatible;
-}
-
-nsresult
-MulticastDNSDeviceProvider::AddDevice(const nsACString& aId,
-                                      const nsACString& aServiceName,
-                                      const nsACString& aServiceType,
-                                      const nsACString& aAddress,
-                                      const uint16_t aPort,
-                                      const nsACString& aCertFingerprint)
-{
-  MOZ_ASSERT(NS_IsMainThread());
-  MOZ_ASSERT(mPresentationService);
-
-  RefPtr<Device> device = new Device(aId, /* ID */
-                                     aServiceName,
-                                     aServiceType,
-                                     aAddress,
-                                     aPort,
-                                     aCertFingerprint,
-                                     DeviceState::eActive,
-                                     this);
-
-  nsCOMPtr<nsIPresentationDeviceListener> listener;
-  if (NS_SUCCEEDED(GetListener(getter_AddRefs(listener))) && listener) {
-    Unused << listener->AddDevice(device);
-  }
-
-  mDevices.AppendElement(device);
-
-  return NS_OK;
-}
-
-nsresult
-MulticastDNSDeviceProvider::UpdateDevice(const uint32_t aIndex,
-                                         const nsACString& aServiceName,
-                                         const nsACString& aServiceType,
-                                         const nsACString& aAddress,
-                                         const uint16_t aPort,
-                                         const nsACString& aCertFingerprint)
-{
-  MOZ_ASSERT(NS_IsMainThread());
-  MOZ_ASSERT(mPresentationService);
-
-  if (NS_WARN_IF(aIndex >= mDevices.Length())) {
-    return NS_ERROR_INVALID_ARG;
-  }
-
-  RefPtr<Device> device = mDevices[aIndex];
-  device->Update(aServiceName, aServiceType, aAddress, aPort, aCertFingerprint);
-  device->ChangeState(DeviceState::eActive);
-
-  nsCOMPtr<nsIPresentationDeviceListener> listener;
-  if (NS_SUCCEEDED(GetListener(getter_AddRefs(listener))) && listener) {
-    Unused << listener->UpdateDevice(device);
-  }
-
-  return NS_OK;
-}
-
-nsresult
-MulticastDNSDeviceProvider::RemoveDevice(const uint32_t aIndex)
-{
-  MOZ_ASSERT(NS_IsMainThread());
-  MOZ_ASSERT(mPresentationService);
-
-  if (NS_WARN_IF(aIndex >= mDevices.Length())) {
-    return NS_ERROR_INVALID_ARG;
-  }
-
-  RefPtr<Device> device = mDevices[aIndex];
-
-  LOG_I("RemoveDevice: %s", device->Id().get());
-  mDevices.RemoveElementAt(aIndex);
-
-  nsCOMPtr<nsIPresentationDeviceListener> listener;
-  if (NS_SUCCEEDED(GetListener(getter_AddRefs(listener))) && listener) {
-    Unused << listener->RemoveDevice(device);
-  }
-
-  return NS_OK;
-}
-
-bool
-MulticastDNSDeviceProvider::FindDeviceById(const nsACString& aId,
-                                           uint32_t& aIndex)
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  RefPtr<Device> device = new Device(aId,
-                                     /* aName = */ EmptyCString(),
-                                     /* aType = */ EmptyCString(),
-                                     /* aHost = */ EmptyCString(),
-                                     /* aPort = */ 0,
-                                     /* aCertFingerprint */ EmptyCString(),
-                                     /* aState = */ DeviceState::eUnknown,
-                                     /* aProvider = */ nullptr);
-  size_t index = mDevices.IndexOf(device, 0, DeviceIdComparator());
-
-  if (index == mDevices.NoIndex) {
-    return false;
-  }
-
-  aIndex = index;
-  return true;
-}
-
-bool
-MulticastDNSDeviceProvider::FindDeviceByAddress(const nsACString& aAddress,
-                                                uint32_t& aIndex)
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  RefPtr<Device> device = new Device(/* aId = */ EmptyCString(),
-                                     /* aName = */ EmptyCString(),
-                                     /* aType = */ EmptyCString(),
-                                     aAddress,
-                                     /* aPort = */ 0,
-                                     /* aCertFingerprint */ EmptyCString(),
-                                     /* aState = */ DeviceState::eUnknown,
-                                     /* aProvider = */ nullptr);
-  size_t index = mDevices.IndexOf(device, 0, DeviceAddressComparator());
-
-  if (index == mDevices.NoIndex) {
-    return false;
-  }
-
-  aIndex = index;
-  return true;
-}
-
-void
-MulticastDNSDeviceProvider::MarkAllDevicesUnknown()
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  for (auto& device : mDevices) {
-    device->ChangeState(DeviceState::eUnknown);
-  }
-}
-
-void
-MulticastDNSDeviceProvider::ClearUnknownDevices()
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  size_t i = mDevices.Length();
-  while (i > 0) {
-    --i;
-    if (mDevices[i]->State() == DeviceState::eUnknown) {
-      Unused << NS_WARN_IF(NS_FAILED(RemoveDevice(i)));
-    }
-  }
-}
-
-void
-MulticastDNSDeviceProvider::ClearDevices()
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  size_t i = mDevices.Length();
-  while (i > 0) {
-    --i;
-    Unused << NS_WARN_IF(NS_FAILED(RemoveDevice(i)));
-  }
-}
-
-// nsIPresentationDeviceProvider
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::GetListener(nsIPresentationDeviceListener** aListener)
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  if (NS_WARN_IF(!aListener)) {
-    return NS_ERROR_INVALID_POINTER;
-  }
-
-  nsresult rv;
-  nsCOMPtr<nsIPresentationDeviceListener> listener =
-    do_QueryReferent(mDeviceListener, &rv);
-  if (NS_WARN_IF(NS_FAILED(rv))) {
-    return rv;
-  }
-
-  listener.forget(aListener);
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::SetListener(nsIPresentationDeviceListener* aListener)
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  mDeviceListener = do_GetWeakReference(aListener);
-
-  nsresult rv;
-  if (mDeviceListener) {
-    if (NS_WARN_IF(NS_FAILED(rv = Init()))) {
-      return rv;
-    }
-  } else {
-    if (NS_WARN_IF(NS_FAILED(rv = Uninit()))) {
-      return rv;
-    }
-  }
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::ForceDiscovery()
-{
-  LOG_I("ForceDiscovery (%d)", mDiscoveryEnabled);
-  MOZ_ASSERT(NS_IsMainThread());
-
-  if (!mDiscoveryEnabled) {
-    return NS_OK;
-  }
-
-  MOZ_ASSERT(mDiscoveryTimer);
-  MOZ_ASSERT(mMulticastDNS);
-
-  // if it's already discovering, extend existing discovery timeout.
-  nsresult rv;
-  if (mIsDiscovering) {
-    Unused << mDiscoveryTimer->Cancel();
-
-    if (NS_WARN_IF(NS_FAILED( rv = mDiscoveryTimer->Init(this,
-        mDiscoveryTimeoutMs,
-        nsITimer::TYPE_ONE_SHOT)))) {
-        return rv;
-    }
-    return NS_OK;
-  }
-
-  StopDiscovery(NS_OK);
-
-  if (NS_WARN_IF(NS_FAILED(rv = mMulticastDNS->StartDiscovery(
-      NS_LITERAL_CSTRING(SERVICE_TYPE),
-      mWrappedListener,
-      getter_AddRefs(mDiscoveryRequest))))) {
-    return rv;
-  }
-
-  return NS_OK;
-}
-
-// nsIDNSServiceDiscoveryListener
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnDiscoveryStarted(const nsACString& aServiceType)
-{
-  LOG_I("OnDiscoveryStarted");
-  MOZ_ASSERT(NS_IsMainThread());
-  MOZ_ASSERT(mDiscoveryTimer);
-
-  MarkAllDevicesUnknown();
-
-  nsresult rv;
-  if (NS_WARN_IF(NS_FAILED(rv = mDiscoveryTimer->Init(this,
-                                                      mDiscoveryTimeoutMs,
-                                                      nsITimer::TYPE_ONE_SHOT)))) {
-    return rv;
-  }
-
-  mIsDiscovering = true;
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnDiscoveryStopped(const nsACString& aServiceType)
-{
-  LOG_I("OnDiscoveryStopped");
-  MOZ_ASSERT(NS_IsMainThread());
-
-  ClearUnknownDevices();
-
-  mIsDiscovering = false;
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnServiceFound(nsIDNSServiceInfo* aServiceInfo)
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  if (NS_WARN_IF(!aServiceInfo)) {
-    return NS_ERROR_INVALID_ARG;
-  }
-
-  nsresult rv ;
-
-  nsAutoCString serviceName;
-  if (NS_WARN_IF(NS_FAILED(rv = aServiceInfo->GetServiceName(serviceName)))) {
-    return rv;
-  }
-
-  LOG_I("OnServiceFound: %s", serviceName.get());
-
-  if (mMulticastDNS) {
-    if (NS_WARN_IF(NS_FAILED(rv = mMulticastDNS->ResolveService(
-        aServiceInfo, mWrappedListener)))) {
-      return rv;
-    }
-  }
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnServiceLost(nsIDNSServiceInfo* aServiceInfo)
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  if (NS_WARN_IF(!aServiceInfo)) {
-    return NS_ERROR_INVALID_ARG;
-  }
-
-  nsresult rv;
-
-  nsAutoCString serviceName;
-  if (NS_WARN_IF(NS_FAILED(rv = aServiceInfo->GetServiceName(serviceName)))) {
-    return rv;
-  }
-
-  LOG_I("OnServiceLost: %s", serviceName.get());
-
-  nsAutoCString host;
-  if (NS_WARN_IF(NS_FAILED(rv = aServiceInfo->GetHost(host)))) {
-    return rv;
-  }
-
-  uint32_t index;
-  if (!FindDeviceById(host, index)) {
-    // given device was not found
-    return NS_OK;
-  }
-
-  if (NS_WARN_IF(NS_FAILED(rv = RemoveDevice(index)))) {
-    return rv;
-  }
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnStartDiscoveryFailed(const nsACString& aServiceType,
-                                                   int32_t aErrorCode)
-{
-  LOG_E("OnStartDiscoveryFailed: %d", aErrorCode);
-  MOZ_ASSERT(NS_IsMainThread());
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnStopDiscoveryFailed(const nsACString& aServiceType,
-                                                  int32_t aErrorCode)
-{
-  LOG_E("OnStopDiscoveryFailed: %d", aErrorCode);
-  MOZ_ASSERT(NS_IsMainThread());
-
-  return NS_OK;
-}
-
-// nsIDNSRegistrationListener
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnServiceRegistered(nsIDNSServiceInfo* aServiceInfo)
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  if (NS_WARN_IF(!aServiceInfo)) {
-    return NS_ERROR_INVALID_ARG;
-  }
-  nsresult rv;
-
-  nsAutoCString name;
-  if (NS_WARN_IF(NS_FAILED(rv = aServiceInfo->GetServiceName(name)))) {
-    return rv;
-  }
-
-  LOG_I("OnServiceRegistered (%s)",  name.get());
-  mRegisteredName = name;
-
-  if (mMulticastDNS) {
-    if (NS_WARN_IF(NS_FAILED(rv = mMulticastDNS->ResolveService(
-        aServiceInfo, mWrappedListener)))) {
-      return rv;
-    }
-  }
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnServiceUnregistered(nsIDNSServiceInfo* aServiceInfo)
-{
-  LOG_I("OnServiceUnregistered");
-  MOZ_ASSERT(NS_IsMainThread());
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnRegistrationFailed(nsIDNSServiceInfo* aServiceInfo,
-                                                 int32_t aErrorCode)
-{
-  LOG_E("OnRegistrationFailed: %d", aErrorCode);
-  MOZ_ASSERT(NS_IsMainThread());
-
-  mRegisterRequest = nullptr;
-
-  if (aErrorCode == nsIDNSRegistrationListener::ERROR_SERVICE_NOT_RUNNING) {
-    return NS_DispatchToMainThread(
-             NewRunnableMethod(this, &MulticastDNSDeviceProvider::RegisterMDNSService));
-  }
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnUnregistrationFailed(nsIDNSServiceInfo* aServiceInfo,
-                                                   int32_t aErrorCode)
-{
-  LOG_E("OnUnregistrationFailed: %d", aErrorCode);
-  MOZ_ASSERT(NS_IsMainThread());
-
-  return NS_OK;
-}
-
-// nsIDNSServiceResolveListener
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnServiceResolved(nsIDNSServiceInfo* aServiceInfo)
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  if (NS_WARN_IF(!aServiceInfo)) {
-    return NS_ERROR_INVALID_ARG;
-  }
-
-  nsresult rv;
-
-  nsAutoCString serviceName;
-  if (NS_WARN_IF(NS_FAILED(rv = aServiceInfo->GetServiceName(serviceName)))) {
-    return rv;
-  }
-
-  LOG_I("OnServiceResolved: %s", serviceName.get());
-
-  nsAutoCString host;
-  if (NS_WARN_IF(NS_FAILED(rv = aServiceInfo->GetHost(host)))) {
-    return rv;
-  }
-
-  if (mRegisteredName == serviceName) {
-    LOG_I("ignore self");
-
-    if (NS_WARN_IF(NS_FAILED(rv = mPresentationService->SetId(host)))) {
-      return rv;
-    }
-
-    return NS_OK;
-  }
-
-  if (!IsCompatibleServer(aServiceInfo)) {
-    LOG_I("ignore incompatible service: %s", serviceName.get());
-    return NS_OK;
-  }
-
-  nsAutoCString address;
-  if (NS_WARN_IF(NS_FAILED(rv = aServiceInfo->GetAddress(address)))) {
-    return rv;
-  }
-
-  uint16_t port;
-  if (NS_WARN_IF(NS_FAILED(rv = aServiceInfo->GetPort(&port)))) {
-    return rv;
-  }
-
-  nsAutoCString serviceType;
-  if (NS_WARN_IF(NS_FAILED(rv = aServiceInfo->GetServiceType(serviceType)))) {
-    return rv;
-  }
-
-  nsCOMPtr<nsIPropertyBag2> propBag;
-  if (NS_WARN_IF(NS_FAILED(
-          aServiceInfo->GetAttributes(getter_AddRefs(propBag)))) || !propBag) {
-    return rv;
-  }
-
-  nsAutoCString certFingerprint;
-  Unused << propBag->GetPropertyAsACString(NS_LITERAL_STRING(CERT_FINGERPRINT_TAG),
-                                           certFingerprint);
-
-  uint32_t index;
-  if (FindDeviceById(host, index)) {
-    return UpdateDevice(index,
-                        serviceName,
-                        serviceType,
-                        address,
-                        port,
-                        certFingerprint);
-  } else {
-    return AddDevice(host,
-                     serviceName,
-                     serviceType,
-                     address,
-                     port,
-                     certFingerprint);
-  }
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnResolveFailed(nsIDNSServiceInfo* aServiceInfo,
-                                            int32_t aErrorCode)
-{
-  LOG_E("OnResolveFailed: %d", aErrorCode);
-  MOZ_ASSERT(NS_IsMainThread());
-
-  return NS_OK;
-}
-
-// nsIPresentationControlServerListener
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnServerReady(uint16_t aPort,
-                                          const nsACString& aCertFingerprint)
-{
-  LOG_I("OnServerReady: %d, %s", aPort, PromiseFlatCString(aCertFingerprint).get());
-  MOZ_ASSERT(NS_IsMainThread());
-
-  if (mDiscoverable) {
-    RegisterMDNSService();
-  }
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnServerStopped(nsresult aResult)
-{
-  LOG_I("OnServerStopped: (0x%08x)", aResult);
-
-  UnregisterMDNSService(aResult);
-
-  // Try restart server if it is stopped abnormally.
-  if (NS_FAILED(aResult) && mDiscoverable) {
-    mIsServerRetrying = true;
-    mServerRetryTimer->Init(this, mServerRetryMs, nsITimer::TYPE_ONE_SHOT);
-  }
-
-  return NS_OK;
-}
-
-// Create a new device if we were unable to find one with the address.
-already_AddRefed<MulticastDNSDeviceProvider::Device>
-MulticastDNSDeviceProvider::GetOrCreateDevice(nsITCPDeviceInfo* aDeviceInfo)
-{
-  nsAutoCString address;
-  Unused << aDeviceInfo->GetAddress(address);
-
-  RefPtr<Device> device;
-  uint32_t index;
-  if (FindDeviceByAddress(address, index)) {
-    device = mDevices[index];
-  } else {
-    // Create a one-time device object for non-discoverable controller.
-    // This device will not be in the list of available devices and cannot
-    // be used for requesting session.
-    nsAutoCString id;
-    Unused << aDeviceInfo->GetId(id);
-    uint16_t port;
-    Unused << aDeviceInfo->GetPort(&port);
-
-    device = new Device(id,
-                        /* aName = */ id,
-                        /* aType = */ EmptyCString(),
-                        address,
-                        port,
-                        /* aCertFingerprint */ EmptyCString(),
-                        DeviceState::eActive,
-                        /* aProvider = */ nullptr);
-  }
-
-  return device.forget();
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnSessionRequest(nsITCPDeviceInfo* aDeviceInfo,
-                                             const nsAString& aUrl,
-                                             const nsAString& aPresentationId,
-                                             nsIPresentationControlChannel* aControlChannel)
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  nsAutoCString address;
-  Unused << aDeviceInfo->GetAddress(address);
-
-  LOG_I("OnSessionRequest: %s", address.get());
-
-  RefPtr<Device> device = GetOrCreateDevice(aDeviceInfo);
-  nsCOMPtr<nsIPresentationDeviceListener> listener;
-  if (NS_SUCCEEDED(GetListener(getter_AddRefs(listener))) && listener) {
-    Unused << listener->OnSessionRequest(device, aUrl, aPresentationId,
-                                         aControlChannel);
-  }
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnTerminateRequest(nsITCPDeviceInfo* aDeviceInfo,
-                                               const nsAString& aPresentationId,
-                                               nsIPresentationControlChannel* aControlChannel,
-                                               bool aIsFromReceiver)
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  nsAutoCString address;
-  Unused << aDeviceInfo->GetAddress(address);
-
-  LOG_I("OnTerminateRequest: %s", address.get());
-
-  RefPtr<Device> device = GetOrCreateDevice(aDeviceInfo);
-  nsCOMPtr<nsIPresentationDeviceListener> listener;
-  if (NS_SUCCEEDED(GetListener(getter_AddRefs(listener))) && listener) {
-    Unused << listener->OnTerminateRequest(device, aPresentationId,
-                                           aControlChannel, aIsFromReceiver);
-  }
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::OnReconnectRequest(nsITCPDeviceInfo* aDeviceInfo,
-                                               const nsAString& aUrl,
-                                               const nsAString& aPresentationId,
-                                               nsIPresentationControlChannel* aControlChannel)
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  nsAutoCString address;
-  Unused << aDeviceInfo->GetAddress(address);
-
-  LOG_I("OnReconnectRequest: %s", address.get());
-
-  RefPtr<Device> device = GetOrCreateDevice(aDeviceInfo);
-  nsCOMPtr<nsIPresentationDeviceListener> listener;
-  if (NS_SUCCEEDED(GetListener(getter_AddRefs(listener))) && listener) {
-    Unused << listener->OnReconnectRequest(device, aUrl, aPresentationId,
-                                           aControlChannel);
-  }
-
-  return NS_OK;
-}
-
-// nsIObserver
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::Observe(nsISupports* aSubject,
-                                    const char* aTopic,
-                                    const char16_t* aData)
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  NS_ConvertUTF16toUTF8 data(aData);
-  LOG_I("Observe: topic = %s, data = %s", aTopic, data.get());
-
-  if (!strcmp(aTopic, NS_PREFBRANCH_PREFCHANGE_TOPIC_ID)) {
-    if (data.EqualsLiteral(PREF_PRESENTATION_DISCOVERY)) {
-      OnDiscoveryChanged(Preferences::GetBool(PREF_PRESENTATION_DISCOVERY));
-    } else if (data.EqualsLiteral(PREF_PRESENTATION_DISCOVERY_TIMEOUT_MS)) {
-      OnDiscoveryTimeoutChanged(Preferences::GetUint(PREF_PRESENTATION_DISCOVERY_TIMEOUT_MS));
-    } else if (data.EqualsLiteral(PREF_PRESENTATION_DISCOVERABLE)) {
-      OnDiscoverableChanged(Preferences::GetBool(PREF_PRESENTATION_DISCOVERABLE));
-    } else if (data.EqualsLiteral(PREF_PRESENTATION_DEVICE_NAME)) {
-      nsAdoptingCString newServiceName = Preferences::GetCString(PREF_PRESENTATION_DEVICE_NAME);
-      if (!mServiceName.Equals(newServiceName)) {
-        OnServiceNameChanged(newServiceName);
-      }
-    }
-  } else if (!strcmp(aTopic, NS_TIMER_CALLBACK_TOPIC)) {
-    nsCOMPtr<nsITimer> timer = do_QueryInterface(aSubject);
-    if (!timer) {
-      return NS_ERROR_UNEXPECTED;
-    }
-
-    if (timer == mDiscoveryTimer) {
-      StopDiscovery(NS_OK);
-    } else if (timer == mServerRetryTimer) {
-      mIsServerRetrying = false;
-      StartServer();
-    }
-  }
-
-  return NS_OK;
-}
-
-nsresult
-MulticastDNSDeviceProvider::OnDiscoveryChanged(bool aEnabled)
-{
-  LOG_I("DiscoveryEnabled = %d\n", aEnabled);
-  MOZ_ASSERT(NS_IsMainThread());
-
-  mDiscoveryEnabled = aEnabled;
-
-  if (mDiscoveryEnabled) {
-    return ForceDiscovery();
-  }
-
-  return StopDiscovery(NS_OK);
-}
-
-nsresult
-MulticastDNSDeviceProvider::OnDiscoveryTimeoutChanged(uint32_t aTimeoutMs)
-{
-  LOG_I("OnDiscoveryTimeoutChanged = %d\n", aTimeoutMs);
-  MOZ_ASSERT(NS_IsMainThread());
-
-  mDiscoveryTimeoutMs = aTimeoutMs;
-
-  return NS_OK;
-}
-
-nsresult
-MulticastDNSDeviceProvider::OnDiscoverableChanged(bool aEnabled)
-{
-  LOG_I("Discoverable = %d\n", aEnabled);
-  MOZ_ASSERT(NS_IsMainThread());
-
-  mDiscoverable = aEnabled;
-
-  if (mDiscoverable) {
-    return StartServer();
-  }
-
-  return StopServer();
-}
-
-nsresult
-MulticastDNSDeviceProvider::OnServiceNameChanged(const nsACString& aServiceName)
-{
-  LOG_I("serviceName = %s\n", PromiseFlatCString(aServiceName).get());
-  MOZ_ASSERT(NS_IsMainThread());
-
-  mServiceName = aServiceName;
-
-  nsresult rv;
-  if (NS_WARN_IF(NS_FAILED(rv = UnregisterMDNSService(NS_OK)))) {
-    return rv;
-  }
-
-  if (mDiscoverable) {
-    return RegisterMDNSService();
-  }
-
-  return NS_OK;
-}
-
-// MulticastDNSDeviceProvider::Device
-NS_IMPL_ISUPPORTS(MulticastDNSDeviceProvider::Device,
-                  nsIPresentationDevice)
-
-// nsIPresentationDevice
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::Device::GetId(nsACString& aId)
-{
-  aId = mId;
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::Device::GetName(nsACString& aName)
-{
-  aName = mName;
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::Device::GetType(nsACString& aType)
-{
-  aType = mType;
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::Device::EstablishControlChannel(
-                                        nsIPresentationControlChannel** aRetVal)
-{
-  if (!mProvider) {
-    return NS_ERROR_FAILURE;
-  }
-
-  return mProvider->Connect(this, aRetVal);
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::Device::Disconnect()
-{
-  // No need to do anything when disconnect.
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MulticastDNSDeviceProvider::Device::IsRequestedUrlSupported(
-                                                 const nsAString& aRequestedUrl,
-                                                 bool* aRetVal)
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  if (!aRetVal) {
-    return NS_ERROR_INVALID_POINTER;
-  }
-
-  // TV 2.6 also supports presentation Apps and HTTP/HTTPS hosted receiver page.
-  if (DeviceProviderHelpers::IsFxTVSupportedAppUrl(aRequestedUrl) ||
-      DeviceProviderHelpers::IsCommonlySupportedScheme(aRequestedUrl)) {
-    *aRetVal = true;
-  }
-
-  return NS_OK;
-}
-
-} // namespace presentation
-} // namespace dom
-} // namespace mozilla