nsUDPSocket.h - mozsearch

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/* vim:set ts=2 sw=2 et cindent: */

/* 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 nsUDPSocket_h__

#define nsUDPSocket_h__

#include "nsIUDPSocket.h"

#include "mozilla/Mutex.h"

#include "mozilla/net/DNS.h"

#include "nsIOutputStream.h"

#include "nsASocketHandler.h"

#include "nsCycleCollectionParticipant.h"

//-----------------------------------------------------------------------------

namespace mozilla {

namespace net {

class nsSocketTransportService;

class nsUDPSocket final : public nsASocketHandler, public nsIUDPSocket {

 public:

  NS_DECL_THREADSAFE_ISUPPORTS

  NS_DECL_NSIUDPSOCKET

  // nsASocketHandler methods:

  virtual void OnSocketReady(PRFileDesc* fd, int16_t outFlags) override;

  virtual void OnSocketDetached(PRFileDesc* fd) override;

  virtual void IsLocal(bool* aIsLocal) override;

  virtual nsresult GetRemoteAddr(NetAddr* addr) override;

  uint64_t ByteCountSent() override { return mByteWriteCount; }

  uint64_t ByteCountReceived() override { return mByteReadCount; }

  void AddOutputBytes(int32_t aBytes);

  nsUDPSocket();

 private:

  virtual ~nsUDPSocket();

  void OnMsgClose();

  void OnMsgAttach();

  // try attaching our socket (mFD) to the STS's poll list.

  nsresult TryAttach();

  friend class SetSocketOptionRunnable;

  nsresult SetSocketOption(const PRSocketOptionData& aOpt);

  nsresult JoinMulticastInternal(const PRNetAddr& aAddr,

                                 const PRNetAddr& aIface);

  nsresult LeaveMulticastInternal(const PRNetAddr& aAddr,

                                  const PRNetAddr& aIface);

  nsresult SetMulticastInterfaceInternal(const PRNetAddr& aIface);

  void CloseSocket();

  // lock protects access to mListener;

  // so mListener is not cleared while being used/locked.

  Mutex mLock MOZ_UNANNOTATED{"nsUDPSocket.mLock"};

  PRFileDesc* mFD{nullptr};

  NetAddr mAddr;

  OriginAttributes mOriginAttributes;

  nsCOMPtr<nsIUDPSocketListener> mListener;

  nsCOMPtr<nsIUDPSocketSyncListener> mSyncListener;

  nsCOMPtr<nsIEventTarget> mListenerTarget;

  bool mAttached{false};

  RefPtr<nsSocketTransportService> mSts;

  uint64_t mByteReadCount{0};

  uint64_t mByteWriteCount{0};

};

//-----------------------------------------------------------------------------

class nsUDPMessage : public nsIUDPMessage {

 public:

  NS_DECL_CYCLE_COLLECTING_ISUPPORTS

  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(nsUDPMessage)

  NS_DECL_NSIUDPMESSAGE

  nsUDPMessage(NetAddr* aAddr, nsIOutputStream* aOutputStream,

               FallibleTArray<uint8_t>&& aData);

 private:

  virtual ~nsUDPMessage();

  NetAddr mAddr;

  nsCOMPtr<nsIOutputStream> mOutputStream;

  FallibleTArray<uint8_t> mData;

  JS::Heap<JSObject*> mJsobj;

};

//-----------------------------------------------------------------------------

class nsUDPOutputStream : public nsIOutputStream {

 public:

  NS_DECL_THREADSAFE_ISUPPORTS

  NS_DECL_NSIOUTPUTSTREAM

  nsUDPOutputStream(nsUDPSocket* aSocket, PRFileDesc* aFD,

                    PRNetAddr& aPrClientAddr);

 private:

  virtual ~nsUDPOutputStream() = default;

  RefPtr<nsUDPSocket> mSocket;

  PRFileDesc* mFD;

  PRNetAddr mPrClientAddr;

  bool mIsClosed;

};

}  // namespace net

}  // namespace mozilla

#endif  // nsUDPSocket_h__