David K. Bainbridge | 215e024 | 2017-09-05 23:18:24 -0700 | [diff] [blame] | 1 | // Copyright 2015 The Go Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | package nettest |
| 6 | |
| 7 | import ( |
| 8 | "fmt" |
| 9 | "runtime" |
| 10 | "syscall" |
| 11 | ) |
| 12 | |
| 13 | func maxOpenFiles() int { |
| 14 | return 4 * defaultMaxOpenFiles /* actually it's 16581375 */ |
| 15 | } |
| 16 | |
| 17 | func supportsRawIPSocket() (string, bool) { |
| 18 | // From http://msdn.microsoft.com/en-us/library/windows/desktop/ms740548.aspx: |
| 19 | // Note: To use a socket of type SOCK_RAW requires administrative privileges. |
| 20 | // Users running Winsock applications that use raw sockets must be a member of |
| 21 | // the Administrators group on the local computer, otherwise raw socket calls |
| 22 | // will fail with an error code of WSAEACCES. On Windows Vista and later, access |
| 23 | // for raw sockets is enforced at socket creation. In earlier versions of Windows, |
| 24 | // access for raw sockets is enforced during other socket operations. |
| 25 | s, err := syscall.Socket(syscall.AF_INET, syscall.SOCK_RAW, 0) |
| 26 | if err == syscall.WSAEACCES { |
| 27 | return fmt.Sprintf("no access to raw socket allowed on %s", runtime.GOOS), false |
| 28 | } |
| 29 | if err != nil { |
| 30 | return err.Error(), false |
| 31 | } |
| 32 | syscall.Closesocket(s) |
| 33 | return "", true |
| 34 | } |
| 35 | |
| 36 | func supportsIPv6MulticastDeliveryOnLoopback() bool { |
| 37 | return true |
| 38 | } |
| 39 | |
| 40 | func causesIPv6Crash() bool { |
| 41 | return false |
| 42 | } |