nettest_windows.go

     1  // Copyright 2019 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 "syscall"
     8  
     9  func supportsRawSocket() bool {
    10  	// From http://msdn.microsoft.com/en-us/library/windows/desktop/ms740548.aspx:
    11  	// Note: To use a socket of type SOCK_RAW requires administrative privileges.
    12  	// Users running Winsock applications that use raw sockets must be a member of
    13  	// the Administrators group on the local computer, otherwise raw socket calls
    14  	// will fail with an error code of WSAEACCES. On Windows Vista and later, access
    15  	// for raw sockets is enforced at socket creation. In earlier versions of Windows,
    16  	// access for raw sockets is enforced during other socket operations.
    17  	for _, af := range []int{syscall.AF_INET, syscall.AF_INET6} {
    18  		s, err := syscall.Socket(af, syscall.SOCK_RAW, 0)
    19  		if err != nil {
    20  			continue
    21  		}
    22  		syscall.Closesocket(s)
    23  		return true
    24  	}
    25  	return false
    26  }
    27
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