PIA and Windscribe hardcoded IP addresses

- Allows to not need to resolve subdomains at start before tunneling
- Allows for Unbound to be configured and started after tunneling
- Refers to #127

internal/constants/lookup_test.go

@@ -0,0 +1,164 @@
+package constants
+
+import (
+	"fmt"
+	"net"
+	"strings"
+	"testing"
+)
+
+func Test_LookupPIAServers(t *testing.T) {
+	t.SkipNow()
+	subdomains := []string{
+		"au-melbourne",
+		"au-perth",
+		"au-sydney",
+		"austria",
+		"belgium",
+		"ca-montreal",
+		"ca-toronto",
+		"ca-vancouver",
+		"czech",
+		"de-berlin",
+		"de-frankfurt",
+		"denmark",
+		"fi",
+		"france",
+		"hk",
+		"hungary",
+		"in",
+		"ireland",
+		"israel",
+		"italy",
+		"japan",
+		"lu",
+		"mexico",
+		"nl",
+		"nz",
+		"no",
+		"poland",
+		"ro",
+		"sg",
+		"spain",
+		"sweden",
+		"swiss",
+		"ae",
+		"uk-london",
+		"uk-manchester",
+		"uk-southampton",
+		"us-atlanta",
+		"us-california",
+		"us-chicago",
+		"us-denver",
+		"us-east",
+		"us-florida",
+		"us-houston",
+		"us-lasvegas",
+		"us-newyorkcity",
+		"us-seattle",
+		"us-siliconvalley",
+		"us-texas",
+		"us-washingtondc",
+		"us-west",
+	}
+	for _, subdomain := range subdomains {
+		ips, err := net.LookupIP(subdomain + ".privateinternetaccess.com")
+		if err != nil {
+			t.Log(err)
+			continue
+		}
+		s := make([]string, len(ips))
+		for i := range ips {
+			s[i] = fmt.Sprintf("{%s}", strings.ReplaceAll(ips[i].String(), ".", ", "))
+		}
+		t.Logf("%s: %s", subdomain, strings.Join(s, ", "))
+	}
+}
+
+func Test_LookupWindscribeServers(t *testing.T) {
+	t.SkipNow()
+	subdomains := []string{
+		"al",
+		"ar",
+		"ar",
+		"au",
+		"at",
+		"az",
+		"be",
+		"ba",
+		"br",
+		"bg",
+		"ca",
+		"ca-west",
+		"co",
+		"hr",
+		"cy",
+		"cz",
+		"dk",
+		"ee",
+		"aq",
+		"fi",
+		"fr",
+		"ge",
+		"de",
+		"gr",
+		"hk",
+		"hu",
+		"is",
+		"in",
+		"id",
+		"ie",
+		"il",
+		"it",
+		"jp",
+		"lv",
+		"lt",
+		"mk",
+		"my",
+		"mx",
+		"md",
+		"nl",
+		"nz",
+		"no",
+		"ph",
+		"pl",
+		"pt",
+		"ro",
+		"ru",
+		"rs",
+		"sg",
+		"sk",
+		"si",
+		"za",
+		"kr",
+		"es",
+		"se",
+		"ch",
+		"th",
+		"tn",
+		"tr",
+		"ua",
+		"ae",
+		"uk",
+		"us-central",
+		"us-east",
+		"us-west",
+		"vn",
+		"wf-ca",
+		"wf-jp",
+		"wf-uk",
+		"wf-us",
+	}
+	for _, subdomain := range subdomains {
+		ips, err := net.LookupIP(subdomain + ".windscribe.com")
+		if err != nil {
+			t.Log(err)
+			continue
+		}
+		s := make([]string, len(ips))
+		for i := range ips {
+			s[i] = fmt.Sprintf("{%s}", strings.ReplaceAll(ips[i].String(), ".", ", "))
+		}
+		t.Logf("%s: %s", subdomain, strings.Join(s, ", "))
+	}
+}