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 /*  *  * MIT License:  * Copyright (c) 2011 Adrian McEwen  * Permission is hereby granted, free of charge, to any person obtaining a copy  *...”

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<pre style="color:blue">
/*
*
* MIT License:
* Copyright (c) 2011 Adrian McEwen
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* 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 AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* adrianm@mcqn.com 1/1/2011
*/

#ifndef IPAddress_h
#define IPAddress_h

#include <Printable.h>

// A class to make it easier to handle and pass around IP addresses

class IPAddress : public Printable {
private:
uint8_t _address[4]; // IPv4 address
// Access the raw byte array containing the address. Because this returns a pointer
// to the internal structure rather than a copy of the address this function should only
// be used when you know that the usage of the returned uint8_t* will be transient and not
// stored.
uint8_t* raw_address() { return _address; };

public:
// Constructors
IPAddress();
IPAddress(uint8_t first_octet, uint8_t second_octet, uint8_t third_octet, uint8_t fourth_octet);
IPAddress(uint32_t address);
IPAddress(const uint8_t *address);

// Overloaded cast operator to allow IPAddress objects to be used where a pointer
// to a four-byte uint8_t array is expected
operator uint32_t() { return *((uint32_t*)_address); };
bool operator==(const IPAddress& addr) { return (*((uint32_t*)_address)) == (*((uint32_t*)addr._address)); };
bool operator==(const uint8_t* addr);

// Overloaded index operator to allow getting and setting individual octets of the address
uint8_t operator[](int index) const { return _address[index]; };
uint8_t& operator[](int index) { return _address[index]; };

// Overloaded copy operators to allow initialisation of IPAddress objects from other types
IPAddress& operator=(const uint8_t *address);
IPAddress& operator=(uint32_t address);

virtual size_t printTo(Print& p) const;

friend class EthernetClass;
friend class UDP;
friend class Client;
friend class Server;
friend class DhcpClass;
friend class DNSClient;
};

const IPAddress INADDR_NONE(0,0,0,0);

#endif

</pre>

IPAddress.h - 版本历史

YWrobot WM：创建页面，内容为“
/* * * MIT License: * Copyright (c) 2011 Adrian McEwen * Permission is hereby granted, free of charge, to any person obtaining a copy *...”