socketaddress.h.svn-base

很好用的网络封装库,不熟悉网络编程的人也可以使用。使用风格良好的标准c++编写。

//
// SocketAddress.h
//
// $Id: //poco/1.3/Net/include/Poco/Net/SocketAddress.h#1 $
//
// Library: Net
// Package: NetCore
// Module:  SocketAddress
//
// Definition of the SocketAddress class.
//
// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#ifndef Net_SocketAddress_INCLUDED
#define Net_SocketAddress_INCLUDED


#include "Poco/Net/Net.h"
#include "Poco/Net/SocketDefs.h"
#include "Poco/Net/IPAddress.h"


namespace Poco {
namespace Net {


class IPAddress;
class SocketAddressImpl;


class Net_API SocketAddress
	/// This class represents an internet (IP) endpoint/socket
	/// address. The address can belong either to the
	/// IPv4 or the IPv6 address family and consists of a
	/// host address and a port number.
{
public:
	SocketAddress();
		/// Creates a wildcard (all zero) IPv4 SocketAddress.
	
	SocketAddress(const IPAddress& host, Poco::UInt16 port);
		/// Creates a SocketAddress from an IP address and a port number.
		
	SocketAddress(const std::string& host, Poco::UInt16 port);
		/// Creates a SocketAddress from an IP address and a port number.
		///
		/// The IP address must either be a domain name, or it must
		/// be in dotted decimal (IPv4) or hex string (IPv6) format.

	SocketAddress(const std::string& host, const std::string& port);
		/// Creates a SocketAddress from an IP address and a 
		/// service name or port number.
		///
		/// The IP address must either be a domain name, or it must
		/// be in dotted decimal (IPv4) or hex string (IPv6) format.
		///
		/// The given port must either be a decimal port number, or 
		/// a service name.
		
	explicit SocketAddress(const std::string& hostAndPort);
		/// Creates a SocketAddress from an IP address or host name and a
		/// port number/service name. Host name/address and port number must
		/// be separated by a colon. In case of an IPv6 address,
		/// the address part must be enclosed in brackets.
		///
		/// Examples:
		///     192.168.1.10:80 
		///     [::FFFF:192.168.1.120]:2040
		///     www.appinf.com:8080

	SocketAddress(const SocketAddress& addr);
		/// Creates a SocketAddress by copying another one.
	
	SocketAddress(const struct sockaddr* addr, poco_socklen_t length);
		/// Creates a SocketAddress from a native socket address.
	
	~SocketAddress();
		/// Destroys the SocketAddress.
		
	SocketAddress& operator = (const SocketAddress& addr);
		/// Assigns another SocketAddress.
		
	void swap(SocketAddress& addr);
		/// Swaps the SocketAddress with another one.	
		
	IPAddress host() const;
		/// Returns the host IP address.
		
	Poco::UInt16 port() const;
		/// Returns the port number.
		
	poco_socklen_t length() const;
		/// Returns the length of the internal native socket address.	
		
	const struct sockaddr* addr() const;
		/// Returns a pointer to the internal native socket address.

	int af() const;
		/// Returns the address family (AF_INET or AF_INET6) of the address.
		
	std::string toString() const;
		/// Returns a string representation of the address.
		
	enum
	{
		MAX_ADDRESS_LENGTH = 
#if defined(POCO_HAVE_IPv6)
			sizeof(struct sockaddr_in6)
#else
			sizeof(struct sockaddr_in)
#endif
			/// Maximum length in bytes of a socket address.
	};

protected:
	void init(const IPAddress& host, Poco::UInt16 port);
	void init(const std::string& host, Poco::UInt16 port);
	Poco::UInt16 resolveService(const std::string& service);

private:
	SocketAddressImpl* _pImpl;
};


//
// inlines
//
inline void swap(SocketAddress& a1, SocketAddress& a2)
{
	a1.swap(a2);
}


} } // namespace Poco::Net


#endif // Net_SocketAddress_INCLUDED