| // 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. |
| |
| // +build !go1.9 |
| // +build darwin dragonfly freebsd linux netbsd openbsd solaris windows |
| |
| package netreflect |
| |
| import ( |
| "net" |
| "reflect" |
| "runtime" |
| ) |
| |
| func socketOf(c net.Conn) (uintptr, error) { |
| v := reflect.ValueOf(c) |
| switch e := v.Elem(); e.Kind() { |
| case reflect.Struct: |
| fd := e.FieldByName("conn").FieldByName("fd") |
| switch e := fd.Elem(); e.Kind() { |
| case reflect.Struct: |
| sysfd := e.FieldByName("sysfd") |
| if runtime.GOOS == "windows" { |
| return uintptr(sysfd.Uint()), nil |
| } |
| return uintptr(sysfd.Int()), nil |
| } |
| } |
| return 0, errInvalidType |
| } |
