Add db-connect, a SQL over HTTPS server

vendor/github.com/kshvakov/clickhouse/lib/column/ipv6.go

@@ -0,0 +1,33 @@
+package column
+
+import (
+	"net"
+
+	"github.com/kshvakov/clickhouse/lib/binary"
+)
+
+type IPv6 struct {
+	base
+}
+
+func (*IPv6) Read(decoder *binary.Decoder) (interface{}, error) {
+	v, err := decoder.Fixed(16)
+	if err != nil {
+		return nil, err
+	}
+	return net.IP(v), nil
+}
+
+func (ip *IPv6) Write(encoder *binary.Encoder, v interface{}) error {
+	netIP, ok := v.(net.IP)
+	if !ok {
+		return &ErrUnexpectedType{
+			T:      v,
+			Column: ip,
+		}
+	}
+	if _, err := encoder.Write([]byte(netIP.To16())); err != nil {
+		return err
+	}
+	return nil
+}