gecko-dev/ipc/unixsocket/UnixSocketConnector.h

86 строки
2.6 KiB
C++

/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* 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_ipc_unixsocketconnector_h
#define mozilla_ipc_unixsocketconnector_h
#include "mozilla/ipc/UnixSocketWatcher.h"
#include "nsString.h"
namespace mozilla {
namespace ipc {
/**
* |UnixSocketConnector| defines the socket creation and connection/listening
* functions for |UnixSocketConsumer|, et al. Due to the fact that socket setup
* can vary between protocols (unix sockets, tcp sockets, bluetooth sockets, etc),
* this allows the user to create whatever connection mechanism they need while
* still depending on libevent for non-blocking communication handling.
*/
class UnixSocketConnector
{
public:
virtual ~UnixSocketConnector();
/**
* Establishs a file descriptor for a socket.
*
* @return File descriptor for socket
*/
virtual int Create() = 0;
/**
* Since most socket specifics are related to address formation into a
* sockaddr struct, this function is defined by subclasses and fills in the
* structure as needed for whatever connection it is trying to build
*
* @param aIsServer True is we are acting as a server socket
* @param aAddrSize Size of the struct
* @param aAddr Struct to fill
* @param aAddress If aIsServer is false, Address to connect to. nullptr otherwise.
*
* @return True if address is filled correctly, false otherwise
*/
virtual bool CreateAddr(bool aIsServer,
socklen_t& aAddrSize,
sockaddr_any& aAddr,
const char* aAddress) = 0;
/**
* Does any socket type specific setup that may be needed, only for socket
* created by ConnectSocket()
*
* @param aFd File descriptor for opened socket
*
* @return true is successful, false otherwise
*/
virtual bool SetUp(int aFd) = 0;
/**
* Perform socket setup for socket created by ListenSocket(), after listen().
*
* @param aFd File descriptor for opened socket
*
* @return true is successful, false otherwise
*/
virtual bool SetUpListenSocket(int aFd) = 0;
/**
* Get address of socket we're currently connected to. Return null string if
* not connected.
*
* @param aAddr Address struct
* @param aAddrStr String to store address to
*/
virtual void GetSocketAddr(const sockaddr_any& aAddr,
nsAString& aAddrStr) = 0;
};
}
}
#endif