[chore] remove vendor

1 files changed, 0 insertions, 103 deletions

diff --git a/vendor/github.com/miekg/dns/udp.go b/vendor/github.com/miekg/dns/udp.go
deleted file mode 100644
index c018ad43d..000000000
--- a/vendor/github.com/miekg/dns/udp.go
+++ /dev/null
@@ -1,103 +0,0 @@
-//go:build !windows
-// +build !windows
-
-package dns
-
-import (
-	"net"
-
-	"golang.org/x/net/ipv4"
-	"golang.org/x/net/ipv6"
-)
-
-// This is the required size of the OOB buffer to pass to ReadMsgUDP.
-var udpOOBSize = func() int {
-	// We can't know whether we'll get an IPv4 control message or an
-	// IPv6 control message ahead of time. To get around this, we size
-	// the buffer equal to the largest of the two.
-
-	oob4 := ipv4.NewControlMessage(ipv4.FlagDst | ipv4.FlagInterface)
-	oob6 := ipv6.NewControlMessage(ipv6.FlagDst | ipv6.FlagInterface)
-
-	if len(oob4) > len(oob6) {
-		return len(oob4)
-	}
-
-	return len(oob6)
-}()
-
-// SessionUDP holds the remote address and the associated
-// out-of-band data.
-type SessionUDP struct {
-	raddr   *net.UDPAddr
-	context []byte
-}
-
-// RemoteAddr returns the remote network address.
-func (s *SessionUDP) RemoteAddr() net.Addr { return s.raddr }
-
-// ReadFromSessionUDP acts just like net.UDPConn.ReadFrom(), but returns a session object instead of a
-// net.UDPAddr.
-func ReadFromSessionUDP(conn *net.UDPConn, b []byte) (int, *SessionUDP, error) {
-	oob := make([]byte, udpOOBSize)
-	n, oobn, _, raddr, err := conn.ReadMsgUDP(b, oob)
-	if err != nil {
-		return n, nil, err
-	}
-	return n, &SessionUDP{raddr, oob[:oobn]}, err
-}
-
-// WriteToSessionUDP acts just like net.UDPConn.WriteTo(), but uses a *SessionUDP instead of a net.Addr.
-func WriteToSessionUDP(conn *net.UDPConn, b []byte, session *SessionUDP) (int, error) {
-	oob := correctSource(session.context)
-	n, _, err := conn.WriteMsgUDP(b, oob, session.raddr)
-	return n, err
-}
-
-func setUDPSocketOptions(conn *net.UDPConn) error {
-	// Try setting the flags for both families and ignore the errors unless they
-	// both error.
-	err6 := ipv6.NewPacketConn(conn).SetControlMessage(ipv6.FlagDst|ipv6.FlagInterface, true)
-	err4 := ipv4.NewPacketConn(conn).SetControlMessage(ipv4.FlagDst|ipv4.FlagInterface, true)
-	if err6 != nil && err4 != nil {
-		return err4
-	}
-	return nil
-}
-
-// parseDstFromOOB takes oob data and returns the destination IP.
-func parseDstFromOOB(oob []byte) net.IP {
-	// Start with IPv6 and then fallback to IPv4
-	// TODO(fastest963): Figure out a way to prefer one or the other. Looking at
-	// the lvl of the header for a 0 or 41 isn't cross-platform.
-	cm6 := new(ipv6.ControlMessage)
-	if cm6.Parse(oob) == nil && cm6.Dst != nil {
-		return cm6.Dst
-	}
-	cm4 := new(ipv4.ControlMessage)
-	if cm4.Parse(oob) == nil && cm4.Dst != nil {
-		return cm4.Dst
-	}
-	return nil
-}
-
-// correctSource takes oob data and returns new oob data with the Src equal to the Dst
-func correctSource(oob []byte) []byte {
-	dst := parseDstFromOOB(oob)
-	if dst == nil {
-		return nil
-	}
-	// If the dst is definitely an IPv6, then use ipv6's ControlMessage to
-	// respond otherwise use ipv4's because ipv6's marshal ignores ipv4
-	// addresses.
-	if dst.To4() == nil {
-		cm := new(ipv6.ControlMessage)
-		cm.Src = dst
-		oob = cm.Marshal()
-	} else {
-		cm := new(ipv4.ControlMessage)
-		cm.Src = dst
-		oob = cm.Marshal()
-	}
-	return oob
-}