github.com/graybobo/golang.org-package-offline-cache@v0.0.0-20200626051047-6608995c132f/x/net/internal/nettest/error_posix.go (about)

     1  // Copyright 2014 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  // +build darwin dragonfly freebsd linux netbsd openbsd solaris windows
     6  
     7  package nettest
     8  
     9  import (
    10  	"os"
    11  	"syscall"
    12  )
    13  
    14  func protocolNotSupported(err error) bool {
    15  	switch err := err.(type) {
    16  	case syscall.Errno:
    17  		switch err {
    18  		case syscall.EPROTONOSUPPORT, syscall.ENOPROTOOPT:
    19  			return true
    20  		}
    21  	case *os.SyscallError:
    22  		switch err := err.Err.(type) {
    23  		case syscall.Errno:
    24  			switch err {
    25  			case syscall.EPROTONOSUPPORT, syscall.ENOPROTOOPT:
    26  				return true
    27  			}
    28  		}
    29  	}
    30  	return false
    31  }