golang nettest_windows 代码
文件路径：/src/vendor/golang.org/x/net/nettest/nettest_windows.go
/ Copyright 2019 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 nettest
import "syscall"
func supportsRawSocket() bool {
/ From http://msdn.microsoft.com/en-us/library/windows/desktop/ms740548.aspx:
/ Note: To use a socket of type SOCK_RAW requires administrative privileges.
/ Users running Winsock applications that use raw sockets must be a member of
/ the Administrators group on the local computer, otherwise raw socket calls
/ will fail with an error code of WSAEACCES. On Windows Vista and later, access
/ for raw sockets is enforced at socket creation. In earlier versions of Windows,
/ access for raw sockets is enforced during other socket operations.
for _, af := range []int{syscall.AF_INET, syscall.AF_INET6} {
s, err := syscall.Socket(af, syscall.SOCK_RAW, 0)
if err != nil {
continue
}
syscall.Closesocket(s)
return true
}
return false
}