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Merge pull request #907 from yggdrasil-network/neilalexander/pmtud
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commit
6c4778bb67
@ -237,11 +237,11 @@ func (k *keyStore) readPC(p []byte) (int, error) {
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k.mutex.Unlock()
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k.mutex.Unlock()
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if len(bs) > mtu {
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if len(bs) > mtu {
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// Using bs would make it leak off the stack, so copy to buf
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// Using bs would make it leak off the stack, so copy to buf
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buf := make([]byte, 40)
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buf := make([]byte, 512)
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copy(buf, bs)
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cn := copy(buf, bs)
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ptb := &icmp.PacketTooBig{
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ptb := &icmp.PacketTooBig{
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MTU: mtu,
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MTU: mtu,
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Data: buf[:40],
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Data: buf[:cn],
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}
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}
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if packet, err := CreateICMPv6(buf[8:24], buf[24:40], ipv6.ICMPTypePacketTooBig, 0, ptb); err == nil {
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if packet, err := CreateICMPv6(buf[8:24], buf[24:40], ipv6.ICMPTypePacketTooBig, 0, ptb); err == nil {
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_, _ = k.writePC(packet)
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_, _ = k.writePC(packet)
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