41 lines
1.3 KiB
Go
41 lines
1.3 KiB
Go
|
// Copyright 2016 The go-ethereum Authors
|
||
|
|
// This file is part of the go-ethereum library.
|
||
|
|
//
|
||
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
||
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
||
|
|
// the Free Software Foundation, either version 3 of the License, or
|
||
|
|
// (at your option) any later version.
|
||
|
|
//
|
||
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
||
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
// GNU Lesser General Public License for more details.
|
||
|
|
//
|
||
|
|
// You should have received a copy of the GNU Lesser General Public License
|
||
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
|
||
|
|
//+build windows
|
||
|
|
|
||
|
|
package netutil
|
||
|
|
|
||
|
|
import (
|
||
|
|
"net"
|
||
|
|
"os"
|
||
|
|
"syscall"
|
||
|
|
)
|
||
|
|
|
||
|
|
const _WSAEMSGSIZE = syscall.Errno(10040)
|
||
|
|
|
||
|
|
// isPacketTooBig reports whether err indicates that a UDP packet didn't
|
||
|
|
// fit the receive buffer. On Windows, WSARecvFrom returns
|
||
|
|
// code WSAEMSGSIZE and no data if this happens.
|
||
|
|
func isPacketTooBig(err error) bool {
|
||
|
|
if opErr, ok := err.(*net.OpError); ok {
|
||
|
|
if scErr, ok := opErr.Err.(*os.SyscallError); ok {
|
||
|
|
return scErr.Err == _WSAEMSGSIZE
|
||
|
|
}
|
||
|
|
return opErr.Err == _WSAEMSGSIZE
|
||
|
|
}
|
||
|
|
return false
|
||
|
|
}
|