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net/netcheck: try ICMP if UDP is blocked (#5056)

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Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
This commit is contained in:
Andrew Dunham
2022-08-04 17:10:13 -04:00
committed by GitHub
parent ddebd30917
commit f0d6f173c9
11 changed files with 634 additions and 7 deletions
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wgengine/magicsock/magicsock.go
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@@ -757,6 +757,7 @@ func (c *Conn) updateNetInfo(ctx context.Context) (*netcheck.Report, error) {
}
ni.WorkingIPv6.Set(report.IPv6)
ni.WorkingUDP.Set(report.UDP)
ni.WorkingICMPv4.Set(report.ICMPv4)
ni.PreferredDERP = report.PreferredDERP
if ni.PreferredDERP == 0 {