mirror of https://github.com/ethereum/go-ethereum
Merge pull request #2146 from fjl/discover-win32-large-packets
p2p/discover: fix Windows-specific issue for larger-than-buffer packetspull/2098/head
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f85212aa86
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// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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//+build !windows
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package discover |
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// reports whether err indicates that a UDP packet didn't
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// fit the receive buffer. There is no such error on
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// non-Windows platforms.
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func isPacketTooBig(err error) bool { |
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return false |
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} |
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// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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//+build windows
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package discover |
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import ( |
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"net" |
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"os" |
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"syscall" |
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) |
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const _WSAEMSGSIZE = syscall.Errno(10040) |
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// reports whether err indicates that a UDP packet didn't
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// fit the receive buffer. On Windows, WSARecvFrom returns
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// code WSAEMSGSIZE and no data if this happens.
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func isPacketTooBig(err error) bool { |
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if opErr, ok := err.(*net.OpError); ok { |
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if scErr, ok := opErr.Err.(*os.SyscallError); ok { |
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return scErr.Err == _WSAEMSGSIZE |
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} |
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return opErr.Err == _WSAEMSGSIZE |
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} |
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return false |
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} |
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