Hulk did something

[bytom/vapor.git] / vendor / golang.org / x / net / internal / socket / rawconn.go

diff --git a/vendor/golang.org/x/net/internal/socket/rawconn.go b/vendor/golang.org/x/net/internal/socket/rawconn.go
new file mode 100644 (file)
index 0000000..d6871d5
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/rawconn.go
@@ -0,0 +1,66 @@
+// Copyright 2017 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.
+
+// +build go1.9
+
+package socket
+
+import (
+       "errors"
+       "net"
+       "os"
+       "syscall"
+)
+
+// A Conn represents a raw connection.
+type Conn struct {
+       network string
+       c       syscall.RawConn
+}
+
+// NewConn returns a new raw connection.
+func NewConn(c net.Conn) (*Conn, error) {
+       var err error
+       var cc Conn
+       switch c := c.(type) {
+       case *net.TCPConn:
+               cc.network = "tcp"
+               cc.c, err = c.SyscallConn()
+       case *net.UDPConn:
+               cc.network = "udp"
+               cc.c, err = c.SyscallConn()
+       case *net.IPConn:
+               cc.network = "ip"
+               cc.c, err = c.SyscallConn()
+       default:
+               return nil, errors.New("unknown connection type")
+       }
+       if err != nil {
+               return nil, err
+       }
+       return &cc, nil
+}
+
+func (o *Option) get(c *Conn, b []byte) (int, error) {
+       var operr error
+       var n int
+       fn := func(s uintptr) {
+               n, operr = getsockopt(s, o.Level, o.Name, b)
+       }
+       if err := c.c.Control(fn); err != nil {
+               return 0, err
+       }
+       return n, os.NewSyscallError("getsockopt", operr)
+}
+
+func (o *Option) set(c *Conn, b []byte) error {
+       var operr error
+       fn := func(s uintptr) {
+               operr = setsockopt(s, o.Level, o.Name, b)
+       }
+       if err := c.c.Control(fn); err != nil {
+               return err
+       }
+       return os.NewSyscallError("setsockopt", operr)
+}