Vendor dependencies

vendor/golang.org/x/net/internal/netreflect/socket.go

@@ -0,0 +1,37 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package netreflect implements run-time reflection for the
+// facilities of net package.
+package netreflect
+
+import (
+	"errors"
+	"net"
+)
+
+var (
+	errInvalidType = errors.New("invalid type")
+	errOpNoSupport = errors.New("operation not supported")
+)
+
+// SocketOf returns the socket descriptor of c.
+func SocketOf(c net.Conn) (uintptr, error) {
+	switch c.(type) {
+	case *net.TCPConn, *net.UDPConn, *net.IPConn, *net.UnixConn:
+		return socketOf(c)
+	default:
+		return 0, errInvalidType
+	}
+}
+
+// PacketSocketOf returns the socket descriptor of c.
+func PacketSocketOf(c net.PacketConn) (uintptr, error) {
+	switch c.(type) {
+	case *net.UDPConn, *net.IPConn, *net.UnixConn:
+		return socketOf(c.(net.Conn))
+	default:
+		return 0, errInvalidType
+	}
+}