feat: DNS host selection - fix code review issues (HAN-400) (#19)

2026-06-08 03:25:37 +00:00
parent 93959c9f11
commit d6063eb636
6 changed files with 321 additions and 32 deletions
@@ -0,0 +1,74 @@
+package dns
+
+import "net"
+
+// RootHints contains the 13 IANA root name servers with their well-known
+// IPv4 and IPv6 addresses as published at https://www.iana.org/domains/root/servers.
+// These addresses change very rarely and are safe to embed as application constants.
+var RootHints = []RootServer{
+	{
+		Name: "a.root-servers.net.",
+		IPv4: []net.IP{net.ParseIP("198.41.0.4")},
+		IPv6: []net.IP{net.ParseIP("2001:503:ba3e::2:30")},
+	},
+	{
+		Name: "b.root-servers.net.",
+		IPv4: []net.IP{net.ParseIP("170.247.170.2")},
+		IPv6: []net.IP{net.ParseIP("2801:1b8:10::b")},
+	},
+	{
+		Name: "c.root-servers.net.",
+		IPv4: []net.IP{net.ParseIP("192.33.4.12")},
+		IPv6: []net.IP{net.ParseIP("2001:500:2::c")},
+	},
+	{
+		Name: "d.root-servers.net.",
+		IPv4: []net.IP{net.ParseIP("199.7.91.13")},
+		IPv6: []net.IP{net.ParseIP("2001:500:2d::d")},
+	},
+	{
+		Name: "e.root-servers.net.",
+		IPv4: []net.IP{net.ParseIP("192.203.230.10")},
+		IPv6: []net.IP{net.ParseIP("2001:500:a8::e")},
+	},
+	{
+		Name: "f.root-servers.net.",
+		IPv4: []net.IP{net.ParseIP("192.5.5.241")},
+		IPv6: []net.IP{net.ParseIP("2001:500:2f::f")},
+	},
+	{
+		Name: "g.root-servers.net.",
+		IPv4: []net.IP{net.ParseIP("192.112.36.4")},
+		IPv6: []net.IP{net.ParseIP("2001:500:12::d0d")},
+	},
+	{
+		Name: "h.root-servers.net.",
+		IPv4: []net.IP{net.ParseIP("198.97.190.53")},
+		IPv6: []net.IP{net.ParseIP("2001:500:1::53")},
+	},
+	{
+		Name: "i.root-servers.net.",
+		IPv4: []net.IP{net.ParseIP("192.36.148.17")},
+		IPv6: []net.IP{net.ParseIP("2001:7fe::53")},
+	},
+	{
+		Name: "j.root-servers.net.",
+		IPv4: []net.IP{net.ParseIP("192.58.128.30")},
+		IPv6: []net.IP{net.ParseIP("2001:503:c27::2:30")},
+	},
+	{
+		Name: "k.root-servers.net.",
+		IPv4: []net.IP{net.ParseIP("193.0.14.129")},
+		IPv6: []net.IP{net.ParseIP("2001:7fd::1")},
+	},
+	{
+		Name: "l.root-servers.net.",
+		IPv4: []net.IP{net.ParseIP("199.7.83.42")},
+		IPv6: []net.IP{net.ParseIP("2001:500:9f::42")},
+	},
+	{
+		Name: "m.root-servers.net.",
+		IPv4: []net.IP{net.ParseIP("202.12.27.33")},
+		IPv6: []net.IP{net.ParseIP("2001:dc3::35")},
+	},
+}