QNetworkAddressEntry

The QNetworkAddressEntry class stores one IP address supported by a network interface, along with its associated netmask and broadcast address. More

Inheritance diagram of PySide2.QtNetwork.QNetworkAddressEntry

Synopsis

Functions

Detailed Description

Each network interface can contain zero or more IP addresses, which in turn can be associated with a netmask and/or a broadcast address (depending on support from the operating system).

This class represents one such group.

class QNetworkAddressEntry

QNetworkAddressEntry(other)

param other

QNetworkAddressEntry

Constructs an empty QNetworkAddressEntry object.

Constructs a QNetworkAddressEntry object that is a copy of the object other .

PySide2.QtNetwork.QNetworkAddressEntry.DnsEligibilityStatus

This enum indicates whether a given host address is eligible to be published in the Domain Name System (DNS) or other similar name resolution mechanisms. In general, an address is suitable for publication if it is an address this machine will be reached at for an indeterminate amount of time, though it need not be permanent. For example, addresses obtained via DHCP are often eligible, but cryptographically-generated temporary IPv6 addresses are not.

Constant

Description

QNetworkAddressEntry.DnsEligibilityUnknown

Qt and the operating system could not determine whether this address should be published or not. The application may need to apply further heuristics if it cannot find any eligible addresses.

QNetworkAddressEntry.DnsEligible

This address is eligible for publication in DNS.

QNetworkAddressEntry.DnsIneligible

This address should not be published in DNS and should not be transmitted to other parties, except maybe as the source address of an outgoing packet.

New in version 5.11.

PySide2.QtNetwork.QNetworkAddressEntry.broadcast()
Return type

QHostAddress

Returns the broadcast address associated with the IPv4 address and netmask. It can usually be derived from those two by setting to 1 the bits of the IP address where the netmask contains a 0. (In other words, by bitwise-OR’ing the IP address with the inverse of the netmask)

This member is always empty for IPv6 addresses, since the concept of broadcast has been abandoned in that system in favor of multicast. In particular, the group of hosts corresponding to all the nodes in the local network can be reached by the “all-nodes” special multicast group (address FF02::1).

See also

setBroadcast()

PySide2.QtNetwork.QNetworkAddressEntry.clearAddressLifetime()

Resets both the preferred and valid lifetimes for this address. After this call, isLifetimeKnown() will return false .

See also

preferredLifetime() validityLifetime() isLifetimeKnown() setAddressLifetime()

PySide2.QtNetwork.QNetworkAddressEntry.dnsEligibility()
Return type

DnsEligibilityStatus

Returns whether this address is eligible for publication in the Domain Name System (DNS) or similar name resolution mechanisms.

In general, an address is suitable for publication if it is an address this machine will be reached at for an indeterminate amount of time, though it need not be permanent. For example, addresses obtained via DHCP are often eligible, but cryptographically-generated temporary IPv6 addresses are not.

On some systems, QNetworkInterface will need to heuristically determine which addresses are eligible.

PySide2.QtNetwork.QNetworkAddressEntry.ip()
Return type

QHostAddress

This function returns one IPv4 or IPv6 address found, that was found in a network interface.

See also

setIp()

PySide2.QtNetwork.QNetworkAddressEntry.isLifetimeKnown()
Return type

bool

Returns true if the address lifetime is known, false if not. If the lifetime is not known, both preferredLifetime() and validityLifetime() will return Forever .

See also

preferredLifetime() validityLifetime() setAddressLifetime() clearAddressLifetime()

PySide2.QtNetwork.QNetworkAddressEntry.isPermanent()
Return type

bool

Returns true if this address is permanent on this interface, false if it’s temporary. A permenant address is one which has no expiration time and is often static (manually configured).

If this information could not be determined, this function returns true .

Note

Depending on the operating system and the networking configuration tool, it is possible for a temporary address to be interpreted as permanent, if the tool did not inform the details correctly to the operating system.

See also

isLifetimeKnown() validityLifetime() isTemporary()

PySide2.QtNetwork.QNetworkAddressEntry.isTemporary()
Return type

bool

Returns true if this address is temporary on this interface, false if it’s permanent.

See also

isLifetimeKnown() validityLifetime() isPermanent()

PySide2.QtNetwork.QNetworkAddressEntry.netmask()
Return type

QHostAddress

Returns the netmask associated with the IP address. The netmask is expressed in the form of an IP address, such as 255.255.0.0.

For IPv6 addresses, the prefix length is converted to an address where the number of bits set to 1 is equal to the prefix length. For a prefix length of 64 bits (the most common value), the netmask will be expressed as a QHostAddress holding the address FFFF:FFFF:FFFF:FFFF:

.. seealso::  :meth:`setNetmask()<PySide2.QtNetwork.QNetworkAddressEntry.setNetmask>`  :meth:`prefixLength()<PySide2.QtNetwork.QNetworkAddressEntry.prefixLength>`
PySide2.QtNetwork.QNetworkAddressEntry.__ne__(other)
Parameters

otherQNetworkAddressEntry

Return type

bool

Returns true if this network address entry is different from other .

PySide2.QtNetwork.QNetworkAddressEntry.__eq__(other)
Parameters

otherQNetworkAddressEntry

Return type

bool

Returns true if this network address entry is the same as other .

PySide2.QtNetwork.QNetworkAddressEntry.prefixLength()
Return type

int

Returns the prefix length of this IP address. The prefix length matches the number of bits set to 1 in the netmask (see netmask() ). For IPv4 addresses, the value is between 0 and 32. For IPv6 addresses, it’s contained between 0 and 128 and is the preferred form of representing addresses.

This function returns -1 if the prefix length could not be determined (i.e., netmask() returns a null QHostAddress()).

PySide2.QtNetwork.QNetworkAddressEntry.setBroadcast(newBroadcast)
Parameters

newBroadcastQHostAddress

Sets the broadcast IP address of this QNetworkAddressEntry object to newBroadcast .

See also

broadcast()

PySide2.QtNetwork.QNetworkAddressEntry.setDnsEligibility(status)
Parameters

statusDnsEligibilityStatus

Sets the DNS eligibility flag for this address to status .

See also

dnsEligibility()

PySide2.QtNetwork.QNetworkAddressEntry.setIp(newIp)
Parameters

newIpQHostAddress

Sets the IP address the QNetworkAddressEntry object contains to newIp .

See also

ip()

PySide2.QtNetwork.QNetworkAddressEntry.setNetmask(newNetmask)
Parameters

newNetmaskQHostAddress

Sets the netmask that this QNetworkAddressEntry object contains to newNetmask . Setting the netmask also sets the prefix length to match the new netmask.

PySide2.QtNetwork.QNetworkAddressEntry.setPrefixLength(length)
Parameters

lengthint

Sets the prefix length of this IP address to length . The value of length must be valid for this type of IP address: between 0 and 32 for IPv4 addresses, between 0 and 128 for IPv6 addresses. Setting to any invalid value is equivalent to setting to -1, which means “no prefix length”.

Setting the prefix length also sets the netmask (see netmask() ).

PySide2.QtNetwork.QNetworkAddressEntry.swap(other)
Parameters

otherQNetworkAddressEntry

Swaps this network address entry instance with other . This function is very fast and never fails.