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util.rfc6724: Remove, unused since introduction of Happy Eyeballs

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It was mainly used to determine whether to try IPv6 or IPv4 first,
following the rules for this in the RFC.

Now we always try IPv6 and IPv4 at roughly the same time, thus there no
need to carry these rules.
This commit is contained in:
Kim Alvefur 2024-02-22 19:46:52 +01:00
parent b9f0c3c0ec
commit ddd479afe2
4 changed files with 1 additions and 239 deletions
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97
spec/util_rfc6724_spec.lua
View file

@ -1,97 +0,0 @@
local rfc6724 = require "util.rfc6724";
local new_ip = require"util.ip".new_ip;
describe("util.rfc6724", function()
describe("#source()", function()
it("should work", function()
assert.are.equal(rfc6724.source(new_ip("2001:db8:1::1", "IPv6"),
{new_ip("2001:db8:3::1", "IPv6"), new_ip("fe80::1", "IPv6")}).addr,
"2001:db8:3::1",
"prefer appropriate scope");
assert.are.equal(rfc6724.source(new_ip("ff05::1", "IPv6"),
{new_ip("2001:db8:3::1", "IPv6"), new_ip("fe80::1", "IPv6")}).addr,
"2001:db8:3::1",
"prefer appropriate scope");
assert.are.equal(rfc6724.source(new_ip("2001:db8:1::1", "IPv6"),
{new_ip("2001:db8:1::1", "IPv6"), new_ip("2001:db8:2::1", "IPv6")}).addr,
"2001:db8:1::1",
"prefer same address"); -- "2001:db8:1::1" should be marked "deprecated" here, we don't handle that right now
assert.are.equal(rfc6724.source(new_ip("fe80::1", "IPv6"),
{new_ip("fe80::2", "IPv6"), new_ip("2001:db8:1::1", "IPv6")}).addr,
"fe80::2",
"prefer appropriate scope"); -- "fe80::2" should be marked "deprecated" here, we don't handle that right now
assert.are.equal(rfc6724.source(new_ip("2001:db8:1::1", "IPv6"),
{new_ip("2001:db8:1::2", "IPv6"), new_ip("2001:db8:3::2", "IPv6")}).addr,
"2001:db8:1::2",
"longest matching prefix");
--[[ "2001:db8:1::2" should be a care-of address and "2001:db8:3::2" a home address, we can't handle this and would fail
assert.are.equal(rfc6724.source(new_ip("2001:db8:1::1", "IPv6"),
{new_ip("2001:db8:1::2", "IPv6"), new_ip("2001:db8:3::2", "IPv6")}).addr,
"2001:db8:3::2",
"prefer home address");
]]
assert.are.equal(rfc6724.source(new_ip("2002:c633:6401::1", "IPv6"),
{new_ip("2002:c633:6401::d5e3:7953:13eb:22e8", "IPv6"), new_ip("2001:db8:1::2", "IPv6")}).addr,
"2002:c633:6401::d5e3:7953:13eb:22e8",
"prefer matching label"); -- "2002:c633:6401::d5e3:7953:13eb:22e8" should be marked "temporary" here, we don't handle that right now
assert.are.equal(rfc6724.source(new_ip("2001:db8:1::d5e3:0:0:1", "IPv6"),
{new_ip("2001:db8:1::2", "IPv6"), new_ip("2001:db8:1::d5e3:7953:13eb:22e8", "IPv6")}).addr,
"2001:db8:1::d5e3:7953:13eb:22e8",
"prefer temporary address") -- "2001:db8:1::2" should be marked "public" and "2001:db8:1::d5e3:7953:13eb:22e8" should be marked "temporary" here, we don't handle that right now
end);
end);
describe("#destination()", function()
it("should work", function()
local order;
order = rfc6724.destination({new_ip("2001:db8:1::1", "IPv6"), new_ip("198.51.100.121", "IPv4")},
{new_ip("2001:db8:1::2", "IPv6"), new_ip("fe80::1", "IPv6"), new_ip("169.254.13.78", "IPv4")})
assert.are.equal(order[1].addr, "2001:db8:1::1", "prefer matching scope");
assert.are.equal(order[2].addr, "198.51.100.121", "prefer matching scope");
order = rfc6724.destination({new_ip("2001:db8:1::1", "IPv6"), new_ip("198.51.100.121", "IPv4")},
{new_ip("fe80::1", "IPv6"), new_ip("198.51.100.117", "IPv4")})
assert.are.equal(order[1].addr, "198.51.100.121", "prefer matching scope");
assert.are.equal(order[2].addr, "2001:db8:1::1", "prefer matching scope");
order = rfc6724.destination({new_ip("2001:db8:1::1", "IPv6"), new_ip("10.1.2.3", "IPv4")},
{new_ip("2001:db8:1::2", "IPv6"), new_ip("fe80::1", "IPv6"), new_ip("10.1.2.4", "IPv4")})
assert.are.equal(order[1].addr, "2001:db8:1::1", "prefer higher precedence");
assert.are.equal(order[2].addr, "10.1.2.3", "prefer higher precedence");
order = rfc6724.destination({new_ip("2001:db8:1::1", "IPv6"), new_ip("fe80::1", "IPv6")},
{new_ip("2001:db8:1::2", "IPv6"), new_ip("fe80::2", "IPv6")})
assert.are.equal(order[1].addr, "fe80::1", "prefer smaller scope");
assert.are.equal(order[2].addr, "2001:db8:1::1", "prefer smaller scope");
--[[ "2001:db8:1::2" and "fe80::2" should be marked "care-of address", while "2001:db8:3::1" should be marked "home address", we can't currently handle this and would fail the test
order = rfc6724.destination({new_ip("2001:db8:1::1", "IPv6"), new_ip("fe80::1", "IPv6")},
{new_ip("2001:db8:1::2", "IPv6"), new_ip("2001:db8:3::1", "IPv6"), new_ip("fe80::2", "IPv6")})
assert.are.equal(order[1].addr, "2001:db8:1::1", "prefer home address");
assert.are.equal(order[2].addr, "fe80::1", "prefer home address");
]]
--[[ "fe80::2" should be marked "deprecated", we can't currently handle this and would fail the test
order = rfc6724.destination({new_ip("2001:db8:1::1", "IPv6"), new_ip("fe80::1", "IPv6")},
{new_ip("2001:db8:1::2", "IPv6"), new_ip("fe80::2", "IPv6")})
assert.are.equal(order[1].addr, "2001:db8:1::1", "avoid deprecated addresses");
assert.are.equal(order[2].addr, "fe80::1", "avoid deprecated addresses");
]]
order = rfc6724.destination({new_ip("2001:db8:1::1", "IPv6"), new_ip("2001:db8:3ffe::1", "IPv6")},
{new_ip("2001:db8:1::2", "IPv6"), new_ip("2001:db8:3f44::2", "IPv6"), new_ip("fe80::2", "IPv6")})
assert.are.equal(order[1].addr, "2001:db8:1::1", "longest matching prefix");
assert.are.equal(order[2].addr, "2001:db8:3ffe::1", "longest matching prefix");
order = rfc6724.destination({new_ip("2002:c633:6401::1", "IPv6"), new_ip("2001:db8:1::1", "IPv6")},
{new_ip("2002:c633:6401::2", "IPv6"), new_ip("fe80::2", "IPv6")})
assert.are.equal(order[1].addr, "2002:c633:6401::1", "prefer matching label");
assert.are.equal(order[2].addr, "2001:db8:1::1", "prefer matching label");
order = rfc6724.destination({new_ip("2002:c633:6401::1", "IPv6"), new_ip("2001:db8:1::1", "IPv6")},
{new_ip("2002:c633:6401::2", "IPv6"), new_ip("2001:db8:1::2", "IPv6"), new_ip("fe80::2", "IPv6")})
assert.are.equal(order[1].addr, "2001:db8:1::1", "prefer higher precedence");
assert.are.equal(order[2].addr, "2002:c633:6401::1", "prefer higher precedence");
end);
end);
end);