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diff --git a/netwerk/ipc/SocketProcessHost.h b/netwerk/ipc/SocketProcessHost.h
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+/* -*- 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/. */
+
+#ifndef mozilla_net_SocketProcessHost_h
+#define mozilla_net_SocketProcessHost_h
+
+#include "mozilla/Maybe.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/ipc/GeckoChildProcessHost.h"
+#include "mozilla/MemoryReportingProcess.h"
+#include "mozilla/ipc/TaskFactory.h"
+
+namespace mozilla {
+
+#if defined(XP_LINUX) && defined(MOZ_SANDBOX)
+class SandboxBroker;
+#endif
+
+namespace net {
+
+class SocketProcessParent;
+
+// SocketProcessHost is the "parent process" container for a subprocess handle
+// and IPC connection. It owns the parent process IPDL actor, which in this
+// case, is a SocketProcessParent.
+// SocketProcessHost is allocated and managed by nsIOService in parent process.
+class SocketProcessHost final : public mozilla::ipc::GeckoChildProcessHost {
+ friend class SocketProcessParent;
+
+ public:
+ class Listener {
+ public:
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(Listener)
+
+ // Called when the process of launching the process is complete.
+ virtual void OnProcessLaunchComplete(SocketProcessHost* aHost,
+ bool aSucceeded) = 0;
+
+ // Called when the channel is closed but Shutdown() is not invoked.
+ virtual void OnProcessUnexpectedShutdown(SocketProcessHost* aHost) = 0;
+
+ protected:
+ virtual ~Listener() = default;
+ };
+
+ explicit SocketProcessHost(Listener* listener);
+
+ // Launch the socket process asynchronously.
+ // The OnProcessLaunchComplete listener callback will be invoked
+ // either when a connection has been established, or if a connection
+ // could not be established due to an asynchronous error.
+ bool Launch();
+
+ // Inform the socket process that it should clean up its resources and shut
+ // down. This initiates an asynchronous shutdown sequence. After this method
+ // returns, it is safe for the caller to forget its pointer to the
+ // SocketProcessHost.
+ void Shutdown();
+
+ // Return the actor for the top-level actor of the process. Return null if
+ // the process is not connected.
+ SocketProcessParent* GetActor() const {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ return mSocketProcessParent.get();
+ }
+
+ bool IsConnected() const {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ return !!mSocketProcessParent;
+ }
+
+ // Called on the IO thread.
+ void OnChannelConnected(base::ProcessId peer_pid) override;
+
+#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
+ // Return the sandbox type to be used with this process type.
+ static MacSandboxType GetMacSandboxType();
+#endif
+
+ private:
+ ~SocketProcessHost();
+
+ // Called on the main thread.
+ void OnChannelConnectedTask();
+
+ // Called on the main thread after a connection has been established.
+ void InitAfterConnect(bool aSucceeded);
+
+ // Called on the main thread when the mSocketParent actor is shutting down.
+ void OnChannelClosed();
+
+ void DestroyProcess();
+
+#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
+ static bool sLaunchWithMacSandbox;
+
+ // Sandbox the Socket process at launch for all instances
+ bool IsMacSandboxLaunchEnabled() override { return sLaunchWithMacSandbox; }
+
+ // Override so we can turn on Socket process-specific sandbox logging
+ bool FillMacSandboxInfo(MacSandboxInfo& aInfo) override;
+#endif
+
+ DISALLOW_COPY_AND_ASSIGN(SocketProcessHost);
+
+ RefPtr<Listener> mListener;
+ mozilla::Maybe<mozilla::ipc::TaskFactory<SocketProcessHost>> mTaskFactory;
+
+ enum class LaunchPhase { Unlaunched, Waiting, Complete };
+ LaunchPhase mLaunchPhase;
+
+ RefPtr<SocketProcessParent> mSocketProcessParent;
+ // mShutdownRequested is set to true only when Shutdown() is called.
+ // If mShutdownRequested is false and the IPC channel is closed,
+ // OnProcessUnexpectedShutdown will be invoked.
+ bool mShutdownRequested;
+ bool mChannelClosed;
+
+#if defined(XP_LINUX) && defined(MOZ_SANDBOX)
+ UniquePtr<SandboxBroker> mSandboxBroker;
+#endif
+};
+
+class SocketProcessMemoryReporter : public MemoryReportingProcess {
+ public:
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(SocketProcessMemoryReporter, override)
+
+ SocketProcessMemoryReporter() = default;
+
+ bool IsAlive() const override;
+
+ bool SendRequestMemoryReport(
+ const uint32_t& aGeneration, const bool& aAnonymize,
+ const bool& aMinimizeMemoryUsage,
+ const Maybe<mozilla::ipc::FileDescriptor>& aDMDFile) override;
+
+ int32_t Pid() const override;
+
+ protected:
+ virtual ~SocketProcessMemoryReporter() = default;
+};
+
+} // namespace net
+} // namespace mozilla
+
+#endif // mozilla_net_SocketProcessHost_h