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GH-65056: Improve the IP address' is_global/is_private documentation #113186

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merged 6 commits into from Mar 18, 2024

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jstasiak
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@jstasiak jstasiak commented Dec 15, 2023

It wasn't clear what the semantics of is_global/is_private are and, when one gets to the bottom of it, it's not quite so simple (hence the exceptions listed).

I opted to fully replace the docstrings with the content from the documentation to save myself some work.


📚 Documentation preview 📚: https://cpython-previews--113186.org.readthedocs.build/

…ation

It wasn't clear what the semantics of is_global/is_private are and, when
one gets to the bottom of it, it's not quite so simple (hence the
exceptions listed).

I opted to fully replace the docstrings with the content from the
documentation to save myself some work.
@jstasiak
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I think the news entry can be safely skipped here.

Note that the documentation is accurate assuming that #113179 gets merged and the 100.64.0.0/10 range handling is left unchanged.

I'll adapt the documentation as needed.

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LGTM, but I'd prefer saying shared address space rather than (or in addition to) the numbers -- at least in the public docs.

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jstasiak and others added 5 commits March 14, 2024 00:00
Co-authored-by: Petr Viktorin <encukou@gmail.com>
Co-authored-by: Petr Viktorin <encukou@gmail.com>
Co-authored-by: Petr Viktorin <encukou@gmail.com>
Co-authored-by: Petr Viktorin <encukou@gmail.com>
Co-authored-by: Petr Viktorin <encukou@gmail.com>
@jstasiak
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That's more than fair, all suggestions applied.

@encukou encukou merged commit 2a4cbf1 into python:main Mar 18, 2024
32 checks passed
vstinner pushed a commit to vstinner/cpython that referenced this pull request Mar 20, 2024
…ation (pythonGH-113186)

* pythonGH-65056: Improve the IP address' is_global/is_private documentation

It wasn't clear what the semantics of is_global/is_private are and, when
one gets to the bottom of it, it's not quite so simple (hence the
exceptions listed).

Co-authored-by: Petr Viktorin <encukou@gmail.com>
adorilson pushed a commit to adorilson/cpython that referenced this pull request Mar 25, 2024
…ation (pythonGH-113186)

* pythonGH-65056: Improve the IP address' is_global/is_private documentation

It wasn't clear what the semantics of is_global/is_private are and, when
one gets to the bottom of it, it's not quite so simple (hence the
exceptions listed).

Co-authored-by: Petr Viktorin <encukou@gmail.com>
diegorusso pushed a commit to diegorusso/cpython that referenced this pull request Apr 17, 2024
…ation (pythonGH-113186)

* pythonGH-65056: Improve the IP address' is_global/is_private documentation

It wasn't clear what the semantics of is_global/is_private are and, when
one gets to the bottom of it, it's not quite so simple (hence the
exceptions listed).

Co-authored-by: Petr Viktorin <encukou@gmail.com>
encukou added a commit to encukou/cpython that referenced this pull request Apr 23, 2024
…ation (pythonGH-113186)

* pythonGH-65056: Improve the IP address' is_global/is_private documentation

It wasn't clear what the semantics of is_global/is_private are and, when
one gets to the bottom of it, it's not quite so simple (hence the
exceptions listed).

Co-authored-by: Petr Viktorin <encukou@gmail.com>
@bedevere-app
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bedevere-app bot commented Apr 23, 2024

GH-118177 is a backport of this pull request to the 3.12 branch.

encukou added a commit that referenced this pull request Apr 24, 2024
…ges (GH-113179) (GH-113186) (GH-118177)

* GH-113171: Fix "private" (non-global) IP address ranges (GH-113179)

The _private_networks variables, used by various is_private
implementations, were missing some ranges and at the same time had
overly strict ranges (where there are more specific ranges considered
globally reachable by the IANA registries).

This patch updates the ranges with what was missing or otherwise
incorrect.

100.64.0.0/10 is left alone, for now, as it's been made special in [1].

The _address_exclude_many() call returns 8 networks for IPv4, 121
networks for IPv6.

[1] #61602

* GH-65056: Improve the IP address' is_global/is_private documentation (GH-113186)

It wasn't clear what the semantics of is_global/is_private are and, when
one gets to the bottom of it, it's not quite so simple (hence the
exceptions listed).

(cherry picked from commit 2a4cbf1)
(cherry picked from commit 40d75c2)

---------

Co-authored-by: Jakub Stasiak <jakub@stasiak.at>
encukou added a commit to encukou/cpython that referenced this pull request Apr 24, 2024
…s ranges (pythonGH-113179) (pythonGH-113186) (pythonGH-118177)

* pythonGH-113171: Fix "private" (non-global) IP address ranges (pythonGH-113179)

The _private_networks variables, used by various is_private
implementations, were missing some ranges and at the same time had
overly strict ranges (where there are more specific ranges considered
globally reachable by the IANA registries).

This patch updates the ranges with what was missing or otherwise
incorrect.

100.64.0.0/10 is left alone, for now, as it's been made special in [1].

The _address_exclude_many() call returns 8 networks for IPv4, 121
networks for IPv6.

[1] python#61602

* pythonGH-65056: Improve the IP address' is_global/is_private documentation (pythonGH-113186)

It wasn't clear what the semantics of is_global/is_private are and, when
one gets to the bottom of it, it's not quite so simple (hence the
exceptions listed).

(cherry picked from commit 2a4cbf1)
(cherry picked from commit 40d75c2)

---------

(cherry picked from commit f86b17a)

Co-authored-by: Jakub Stasiak <jakub@stasiak.at>
encukou added a commit to encukou/cpython that referenced this pull request Apr 24, 2024
…s ranges (pythonGH-113179) (pythonGH-113186) (pythonGH-118177)

* pythonGH-113171: Fix "private" (non-global) IP address ranges (pythonGH-113179)

The _private_networks variables, used by various is_private
implementations, were missing some ranges and at the same time had
overly strict ranges (where there are more specific ranges considered
globally reachable by the IANA registries).

This patch updates the ranges with what was missing or otherwise
incorrect.

100.64.0.0/10 is left alone, for now, as it's been made special in [1].

The _address_exclude_many() call returns 8 networks for IPv4, 121
networks for IPv6.

[1] python#61602

* pythonGH-65056: Improve the IP address' is_global/is_private documentation (pythonGH-113186)

It wasn't clear what the semantics of is_global/is_private are and, when
one gets to the bottom of it, it's not quite so simple (hence the
exceptions listed).

(cherry picked from commit 2a4cbf1)
(cherry picked from commit 40d75c2)

---------

(cherry picked from commit f86b17a)

Co-authored-by: Jakub Stasiak <jakub@stasiak.at>
encukou added a commit to encukou/cpython that referenced this pull request May 1, 2024
…s ranges (pythonGH-113179) (pythonGH-113186) (pythonGH-118177)

* pythonGH-113171: Fix "private" (non-global) IP address ranges (pythonGH-113179)

The _private_networks variables, used by various is_private
implementations, were missing some ranges and at the same time had
overly strict ranges (where there are more specific ranges considered
globally reachable by the IANA registries).

This patch updates the ranges with what was missing or otherwise
incorrect.

100.64.0.0/10 is left alone, for now, as it's been made special in [1].

The _address_exclude_many() call returns 8 networks for IPv4, 121
networks for IPv6.

[1] python#61602

* pythonGH-65056: Improve the IP address' is_global/is_private documentation (pythonGH-113186)

It wasn't clear what the semantics of is_global/is_private are and, when
one gets to the bottom of it, it's not quite so simple (hence the
exceptions listed).

(cherry picked from commit 2a4cbf1)
(cherry picked from commit 40d75c2)

---------

(cherry picked from commit f86b17a)

Co-authored-by: Jakub Stasiak <jakub@stasiak.at>
encukou added a commit to encukou/cpython that referenced this pull request May 1, 2024
…s ranges (pythonGH-113179) (pythonGH-113186) (pythonGH-118177)

* pythonGH-113171: Fix "private" (non-global) IP address ranges (pythonGH-113179)

The _private_networks variables, used by various is_private
implementations, were missing some ranges and at the same time had
overly strict ranges (where there are more specific ranges considered
globally reachable by the IANA registries).

This patch updates the ranges with what was missing or otherwise
incorrect.

100.64.0.0/10 is left alone, for now, as it's been made special in [1].

The _address_exclude_many() call returns 8 networks for IPv4, 121
networks for IPv6.

[1] python#61602

* pythonGH-65056: Improve the IP address' is_global/is_private documentation (pythonGH-113186)

It wasn't clear what the semantics of is_global/is_private are and, when
one gets to the bottom of it, it's not quite so simple (hence the
exceptions listed).

(cherry picked from commit 2a4cbf1)
(cherry picked from commit 40d75c2)

---------

(cherry picked from commit f86b17a)

Co-authored-by: Jakub Stasiak <jakub@stasiak.at>
ambv pushed a commit that referenced this pull request May 7, 2024
…ges (GH-113179) (GH-113186) (GH-118177) (GH-118229)

The _private_networks variables, used by various is_private
implementations, were missing some ranges and at the same time had
overly strict ranges (where there are more specific ranges considered
globally reachable by the IANA registries).

This patch updates the ranges with what was missing or otherwise
incorrect.

100.64.0.0/10 is left alone, for now, as it's been made special in [1].

The _address_exclude_many() call returns 8 networks for IPv4, 121
networks for IPv6.

[1] #61602

In 3.10 and below, is_private checks whether the network and broadcast
address are both private.
In later versions (where the test wss backported from), it checks
whether they both are in the same private network.

For 0.0.0.0/0, both 0.0.0.0 and 255.225.255.255 are private,
but one is in 0.0.0.0/8 ("This network") and the other in
255.255.255.255/32 ("Limited broadcast").

---------

Co-authored-by: Jakub Stasiak <jakub@stasiak.at>
ambv pushed a commit that referenced this pull request May 7, 2024
…es (GH-113179) (GH-113186) (GH-118177) (GH-118472)

The _private_networks variables, used by various is_private
implementations, were missing some ranges and at the same time had
overly strict ranges (where there are more specific ranges considered
globally reachable by the IANA registries).

This patch updates the ranges with what was missing or otherwise
incorrect.

100.64.0.0/10 is left alone, for now, as it's been made special in [1].

The _address_exclude_many() call returns 8 networks for IPv4, 121
networks for IPv6.

[1] #61602

In 3.10 and below, is_private checks whether the network and broadcast
address are both private.
In later versions (where the test wss backported from), it checks
whether they both are in the same private network.

For 0.0.0.0/0, both 0.0.0.0 and 255.225.255.255 are private,
but one is in 0.0.0.0/8 ("This network") and the other in
255.255.255.255/32 ("Limited broadcast").

---------

Co-authored-by: Jakub Stasiak <jakub@stasiak.at>
ambv pushed a commit that referenced this pull request May 7, 2024
…es (GH-113179) (GH-113186) (GH-118177) (GH-118479)

The _private_networks variables, used by various is_private
implementations, were missing some ranges and at the same time had
overly strict ranges (where there are more specific ranges considered
globally reachable by the IANA registries).

This patch updates the ranges with what was missing or otherwise
incorrect.

100.64.0.0/10 is left alone, for now, as it's been made special in [1].

The _address_exclude_many() call returns 8 networks for IPv4, 121
networks for IPv6.

[1] #61602

In 3.10 and below, is_private checks whether the network and broadcast
address are both private.
In later versions (where the test wss backported from), it checks
whether they both are in the same private network.

For 0.0.0.0/0, both 0.0.0.0 and 255.225.255.255 are private,
but one is in 0.0.0.0/8 ("This network") and the other in
255.255.255.255/32 ("Limited broadcast").

---------

Co-authored-by: Jakub Stasiak <jakub@stasiak.at>
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