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cherry-pick: aghnet: imp host validation for system resolvers

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Updates #3022.

Squashed commit of the following:

commit 2f63b4e1765d9c9bfeadafcfa42c9d8741b628e1
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Wed Apr 28 21:29:28 2021 +0300

    aghnet: fix doc

commit efdc1bb2c8959a9f888d558c32c415e6f3678b0c
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Wed Apr 28 21:19:54 2021 +0300

    all: doc changes

commit 8154797095874771bcf04d109644e6ae33fcb470
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Wed Apr 28 21:15:42 2021 +0300

    aghnet: imp host validation for system resolvers
This commit is contained in:
Ainar Garipov
2021-04-28 21:34:18 +03:00
committed by Ainar Garipov
parent 5b9bbce55d
commit d59938d254
4 changed files with 63 additions and 14 deletions
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20
internal/aghnet/systemresolvers_others_test.go
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@@ -46,21 +46,33 @@ func TestSystemResolvers_DialFunc(t *testing.T) {
imp := createTestSystemResolversImp(t, 0, nil)
testCases := []struct {
want error
name string
address string
want error
}{{
want: errFakeDial,
name: "valid",
address: "127.0.0.1",
want: fakeDialErr,
}, {
want: errFakeDial,
name: "valid_ipv6_port",
address: "[::1]:53",
}, {
want: errFakeDial,
name: "valid_ipv6_zone_port",
address: "[::1%lo0]:53",
}, {
want: errBadAddrPassed,
name: "invalid_split_host",
address: "127.0.0.1::123",
want: badAddrPassedErr,
}, {
want: errUnexpectedHostFormat,
name: "invalid_ipv6_zone_port",
address: "[::1%%lo0]:53",
}, {
want: errBadAddrPassed,
name: "invalid_parse_ip",
address: "not-ip",
want: badAddrPassedErr,
}}
for _, tc := range testCases {