Create internal DC package

mtglib/internal/dc/init.go

@@ -0,0 +1,79 @@
+package dc
+
+import "time"
+
+type preferIP uint8
+
+const (
+	preferIPOnlyIPv4 preferIP = iota
+	preferIPOnlyIPv6
+	preferIPPreferIPv4
+	preferIPPreferIPv6
+)
+
+const (
+	DefaultDC                    = 2
+	DefaultUpdateDCAddressesEach = time.Hour
+
+	defaultAppID   = 123456
+	defaultAppHash = ""
+)
+
+type Logger interface {
+	Info(msg string)
+	WarningError(msg string, err error)
+}
+
+var (
+	// https://github.com/telegramdesktop/tdesktop/blob/master/Telegram/SourceFiles/mtproto/mtproto_dc_options.cpp#L30
+	defaultDCAddrSet = dcAddrSet{
+		v4: map[int][]Addr{
+			1: {
+				{Network: "tcp4", Address: "149.154.175.50:443"},
+			},
+			2: {
+				{Network: "tcp4", Address: "149.154.167.51:443"},
+				{Network: "tcp4", Address: "95.161.76.100:443"},
+			},
+			3: {
+				{Network: "tcp4", Address: "149.154.175.100:443"},
+			},
+			4: {
+				{Network: "tcp4", Address: "149.154.167.91:443"},
+			},
+			5: {
+				{Network: "tcp4", Address: "149.154.171.5:443"},
+			},
+		},
+		v6: map[int][]Addr{
+			1: {
+				{Network: "tcp6", Address: "[2001:b28:f23d:f001::a]:443"},
+			},
+			2: {
+				{Network: "tcp6", Address: "[2001:67c:04e8:f002::a]:443"},
+			},
+			3: {
+				{Network: "tcp6", Address: "[2001:b28:f23d:f003::a]:443"},
+			},
+			4: {
+				{Network: "tcp6", Address: "[2001:67c:04e8:f004::a]:443"},
+			},
+			5: {
+				{Network: "tcp6", Address: "[2001:b28:f23f:f005::a]:443"},
+			},
+		},
+	}
+
+	defaultDCOverridesAddrSet = dcAddrSet{
+		v4: map[int][]Addr{
+			203: {
+				{Network: "tcp4", Address: "91.105.192.100:443"},
+			},
+		},
+		v6: map[int][]Addr{
+			203: {
+				{Network: "tcp6", Address: "[2a0a:f280:0203:000a:5000:0000:0000:0100]:443"},
+			},
+		},
+	}
+)