A basic representation of an IP v4 address. More...

#include <tsIPv4Address.h>

Inheritance diagram for ts::IPv4Address:

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Collaboration diagram for ts::IPv4Address:

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Public Types
using	Port = uint16_t
	The concept of port is used by TCP and UDP over IP networks.

Public Member Functions
	IPv4Address ()=default
	Default constructor.

	IPv4Address (const ::in_addr &a)
	Constructor from a system "struct in_addr" structure (socket API).

	IPv4Address (const ::sockaddr &a)
	Constructor from a system "struct sockaddr" structure (socket API).

	IPv4Address (const ::sockaddr_in &a)
	Constructor from a system "struct sockaddr_in" structure (socket API).

	IPv4Address (const UString &name, Report &report)
	Constructor from a string, host name or "a.b.c.d" integer format.

	IPv4Address (uint32_t addr)
	Constructor from an integer address.

	IPv4Address (uint8_t b1, uint8_t b2, uint8_t b3, uint8_t b4)
	Constructor from 4 bytes (classical IPv4 notation).

uint32_t	address () const
	Get the IP address as a 32-bit integer value in host byte order.

virtual size_t	binarySize () const override
	Get the maximum binary size for an address of that class.

virtual void	clear ()
	Clear the object, address and port if there is any.

virtual void	clearAddress () override
	Clear the address field.

virtual void	clearPort ()
	Clear the port.

void	copy (::in_addr &a) const
	Copy the address into a system "struct in_addr" structure (socket API).

void	copy (::sockaddr &a, uint16_t port) const
	Copy the address into a system "struct sockaddr" structure (socket API).

void	copy (::sockaddr_in &a, uint16_t port) const
	Copy the address into a system "struct sockaddr_in" structure (socket API).

virtual const UChar *	familyName () const override
	Get a human-readable family name for an address of that class.

virtual size_t	getAddress (void *addr, size_t size) const override
	Get the network address as binary data.

virtual bool	hasAddress () const override
	Check if this object is set to a valid address.

virtual bool	hasPort () const
	Check if a port is set.

virtual bool	isMulticast () const override
	Check if the address is a multicast address.

bool	isSSM () const
	Check if the address is a source specific multicast (SSM) address.

bool	match (const IPv4Address &other) const
	Check if this address "matches" another one.

bool	operator< (const IPv4Address &other) const
	Comparison "less than" operator.

bool	operator== (const IPv4Address &a) const
	Equality operator.

virtual Port	port () const
	Get the port if there is one.

virtual bool	resolve (const UString &name, Report &report) override
	Decode a string containing a network address in family-specific format.

void	setAddress (const IPv4Address &addr)
	Set the IP address from another IPv4Address object.

virtual bool	setAddress (const void *addr, size_t size) override
	Set the network address from binary data.

void	setAddress (uint32_t addr)
	Set the IP address from a 32-bit integer value in host byte order.

void	setAddress (uint8_t b1, uint8_t b2, uint8_t b3, uint8_t b4)
	Set the IP address from 4 bytes (classical IPv4 notation).

virtual void	setPort (Port port)
	Set the port.

virtual UString	toFullString () const
	Convert to a string object in numeric format without the default compaction.

virtual UString	toString () const override
	Convert to a string object.

Static Public Attributes
static constexpr uint32_t	AnyAddress = 0
	Wildcard integer value for "any IP address".

static constexpr Port	AnyPort = 0
	Wildcard integer value for "any port" or "no port".

static constexpr size_t	BITS = 32
	Size in bits of an IPv4 address.

static constexpr size_t	BYTES = 4
	Size in bytes of an IPv4 address.

static const IPv4Address	LocalHost
	Local host address.

Detailed Description

A basic representation of an IP v4 address.

IP v4 addresses are sometimes manipulated as 32-bit integer values. There is always some ambiguity in the operating system interface about the byte order of these integer values. In this class, all publicly available integer values are in the natural host byte order. Whenever a conversion is required, the internal guts of this class will do it for you (and hide it from you).

The string representation is "int.int.int.int".

Constructor & Destructor Documentation

◆ IPv4Address() [1/6]

ts::IPv4Address::IPv4Address ( uint32_t addr )

inline

Constructor from an integer address.

Parameters

[in] addr The IP v4 address as an integer in host byte order.

◆ IPv4Address() [2/6]

ts::IPv4Address::IPv4Address	(	uint8_t	b1,
		uint8_t	b2,
		uint8_t	b3,
		uint8_t	b4
	)

Constructor from 4 bytes (classical IPv4 notation).

Parameters

[in]	b1	First address byte.
[in]	b2	Second address byte.
[in]	b3	Third address byte.
[in]	b4	Fourth address byte.

◆ IPv4Address() [3/6]

ts::IPv4Address::IPv4Address ( const ::in_addr & a )

inline

Constructor from a system "struct in_addr" structure (socket API).

Parameters

[in] a A system "struct in_addr" structure.

◆ IPv4Address() [4/6]

ts::IPv4Address::IPv4Address ( const ::sockaddr & a )

Constructor from a system "struct sockaddr" structure (socket API).

Parameters

[in] a A system "struct sockaddr" structure.

◆ IPv4Address() [5/6]

ts::IPv4Address::IPv4Address ( const ::sockaddr_in & a )

Constructor from a system "struct sockaddr_in" structure (socket API).

Parameters

[in] a A system "struct sockaddr_in" structure.

◆ IPv4Address() [6/6]

ts::IPv4Address::IPv4Address	(	const UString &	name,
		Report &	report
	)

inline

Constructor from a string, host name or "a.b.c.d" integer format.

If name cannot be resolved, the integer value of the address is set to AnyAddress.

Parameters

[in]	name	A string containing either a host name or a numerical representation of the address "a.b.c.d".
[in]	report	Where to report errors.

Member Function Documentation

◆ binarySize()

virtual size_t ts::IPv4Address::binarySize ( ) const

overridevirtual

Get the maximum binary size for an address of that class.

Returns: The maximum binary size for an address of that class.

Implements ts::AbstractNetworkAddress.

◆ familyName()

virtual const UChar * ts::IPv4Address::familyName ( ) const

overridevirtual

Get a human-readable family name for an address of that class.

This is typically something like "IPv4" or "IPv6".

Returns: A human-readable family name for an address of that class.

Implements ts::AbstractNetworkAddress.

◆ hasAddress()

virtual bool ts::IPv4Address::hasAddress ( ) const

overridevirtual

Check if this object is set to a valid address.

Returns: True if this object is set to a valid address, false otherwise.

Implements ts::AbstractNetworkAddress.

◆ getAddress()

virtual size_t ts::IPv4Address::getAddress	(	void *	addr,
		size_t	size
	)		const

overridevirtual

Get the network address as binary data.

Parameters

[out]	addr	Address of binary buffer to receive binary data.
[in]	size	Size in bytes of buffer.

Returns: Number of copied bytes on success, zero on error (data too short).

Implements ts::AbstractNetworkAddress.

◆ setAddress() [1/4]

virtual bool ts::IPv4Address::setAddress	(	const void *	addr,
		size_t	size
	)

overridevirtual

Set the network address from binary data.

Parameters

[in]	addr	Address of binary data.
[in]	size	Size in bytes of binary data.

Returns: True on success, false on error (data too short).

Implements ts::AbstractNetworkAddress.

◆ clearAddress()

virtual void ts::IPv4Address::clearAddress ( )

overridevirtual

Clear the address field.

Implements ts::AbstractNetworkAddress.

◆ isMulticast()

virtual bool ts::IPv4Address::isMulticast ( ) const

overridevirtual

Check if the address is a multicast address.

Returns: True if the address is a multicast address, false otherwise.

Implements ts::AbstractNetworkAddress.

◆ resolve()

virtual bool ts::IPv4Address::resolve	(	const UString &	name,
		Report &	report
	)

overridevirtual

Decode a string containing a network address in family-specific format.

Parameters

[in]	name	A string containing either a host name or a numerical representation of the address.
[in]	report	Where to report errors.

Returns: True if name was successfully resolved, false otherwise. In the later case, the address is invalidated.

Implements ts::AbstractNetworkAddress.

Reimplemented in ts::IPv4SocketAddress.

◆ toString()

virtual UString ts::IPv4Address::toString ( ) const

overridevirtual

Convert to a string object.

Returns: This object, converted as a string.

Implements ts::StringifyInterface.

Reimplemented in ts::IPv4SocketAddress.

◆ address()

uint32_t ts::IPv4Address::address ( ) const

inline

Get the IP address as a 32-bit integer value in host byte order.

Returns: The IP address as a 32-bit integer value in host byte order.

◆ setAddress() [2/4]

void ts::IPv4Address::setAddress ( uint32_t addr )

inline

Set the IP address from a 32-bit integer value in host byte order.

Parameters

[in] addr The IP v4 address as an integer in host byte order.

◆ setAddress() [3/4]

void ts::IPv4Address::setAddress ( const IPv4Address & addr )

inline

Set the IP address from another IPv4Address object.

Useful for subclasses.

Parameters

[in] addr Another IP address.

◆ setAddress() [4/4]

void ts::IPv4Address::setAddress	(	uint8_t	b1,
		uint8_t	b2,
		uint8_t	b3,
		uint8_t	b4
	)

Set the IP address from 4 bytes (classical IPv4 notation).

Parameters

[in]	b1	First address byte.
[in]	b2	Second address byte.
[in]	b3	Third address byte.
[in]	b4	Fourth address byte.

◆ isSSM()

bool ts::IPv4Address::isSSM ( ) const

inline

Check if the address is a source specific multicast (SSM) address.

Note: SSM addresses are in the range 232.0.0.0/8.

Returns: True if the address is an SSM address, false otherwise.

◆ copy() [1/3]

void ts::IPv4Address::copy	(	::sockaddr &	a,
		uint16_t	port
	)		const

Copy the address into a system "struct sockaddr" structure (socket API).

Parameters

[out]	a	A system "struct sockaddr" structure.
[in]	port	Port number for the socket address.

◆ copy() [2/3]

void ts::IPv4Address::copy	(	::sockaddr_in &	a,
		uint16_t	port
	)		const

Copy the address into a system "struct sockaddr_in" structure (socket API).

Parameters

[out]	a	A system "struct sockaddr_in" structure.
[in]	port	Port number for the socket address.

◆ copy() [3/3]

void ts::IPv4Address::copy ( ::in_addr & a ) const

inline

Copy the address into a system "struct in_addr" structure (socket API).

Parameters

[out] a A system "struct in_addr" structure.

◆ match()

bool ts::IPv4Address::match ( const IPv4Address & other ) const

Check if this address "matches" another one.

Parameters

[in] other Another instance to compare.

Returns: False if this and other addresses are both specified and are different. True otherwise.

◆ operator==()

bool ts::IPv4Address::operator== ( const IPv4Address & a ) const

inline

Equality operator.

Parameters

[in] a Another instance to compare with.

Returns: True if both object contains the same address, false otherwise.

◆ operator<()

bool ts::IPv4Address::operator< ( const IPv4Address & other ) const

inline

Comparison "less than" operator.

It does not really makes sense. Only defined to allow usage in containers.

Parameters

[in] other Other instance to compare.

Returns: True if this instance is less than to other.

◆ hasPort()

virtual bool ts::AbstractNetworkAddress::hasPort ( ) const

virtualinherited

Check if a port is set.

Returns: True if port is set.

◆ port()

virtual Port ts::AbstractNetworkAddress::port ( ) const

virtualinherited

Get the port if there is one.

The default implementation returns AnyPort.

Returns: The port number or AnyPort if there is none.

Reimplemented in ts::IPv4SocketAddress, and ts::IPv6SocketAddress.

◆ setPort()

virtual void ts::AbstractNetworkAddress::setPort ( Port port )

virtualinherited

Set the port.

The default implementation does nothing.

Parameters

[in] port The port number as an integer in host byte order.

Reimplemented in ts::IPv4SocketAddress, and ts::IPv6SocketAddress.

◆ clearPort()

virtual void ts::AbstractNetworkAddress::clearPort ( )

virtualinherited

Clear the port.

The default implementatio sets the port to AnyPort

◆ toFullString()

virtual UString ts::AbstractNetworkAddress::toFullString ( ) const

virtualinherited

Convert to a string object in numeric format without the default compaction.

The method toString() (inherited from StringifyInterface) returns a default representation of the string, with possible compaction of omitted defaults. This method returns a complete version of the address representation. The default implementation returns the same value as toString().

Returns: This object, converted as a string.

Reimplemented in ts::IPv6Address, and ts::IPv6SocketAddress.

Member Data Documentation

◆ LocalHost

const IPv4Address ts::IPv4Address::LocalHost

static

Local host address.

Usually resolves to the host name "localhost".

The documentation for this class was generated from the following file:

tsIPv4Address.h

Public Types

Public Member Functions

Static Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ IPv4Address() [1/6]

◆ IPv4Address() [2/6]

◆ IPv4Address() [3/6]

◆ IPv4Address() [4/6]

◆ IPv4Address() [5/6]

◆ IPv4Address() [6/6]

Member Function Documentation

◆ binarySize()

◆ familyName()

◆ hasAddress()

◆ getAddress()

◆ setAddress() [1/4]

◆ clearAddress()

◆ isMulticast()

◆ resolve()

◆ toString()

◆ address()

◆ setAddress() [2/4]

◆ setAddress() [3/4]

◆ setAddress() [4/4]

◆ isSSM()

◆ copy() [1/3]

◆ copy() [2/3]

◆ copy() [3/3]

◆ match()

◆ operator==()

◆ operator<()

◆ hasPort()

◆ port()

◆ setPort()

◆ clearPort()

◆ toFullString()

Member Data Documentation

◆ LocalHost