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TUN-6043: Allow UI-managed Tunnels to fallback from QUIC but warn about that

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This commit is contained in:
Nuno Diegues
2022-04-11 22:50:37 +01:00
parent def8f57dbc
commit 7a6ab54fcb
2 changed files with 25 additions and 2 deletions
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9
supervisor/tunnel.go
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@@ -235,6 +235,15 @@ func selectNextProtocol(
_, hasFallback := selector.Fallback()
if protocolBackoff.ReachedMaxRetries() || (hasFallback && isNetworkActivityTimeout) {
if isNetworkActivityTimeout {
connLog.Warn().Msg("If this log occurs persistently, and cloudflared is unable to connect to " +
"Cloudflare Network with `quic` protocol, then most likely your machine/network is getting its egress " +
"UDP to port 7844 (or others) blocked or dropped. Make sure to allow egress connectivity as per " +
"https://developers.cloudflare.com/cloudflare-one/connections/connect-apps/configuration/ports-and-ips/\n" +
"If you are using private routing to this Tunnel, then UDP (and Private DNS Resolution) will not work" +
"unless your cloudflared can connect with Cloudflare Network with `quic`.")
}
fallback, hasFallback := selector.Fallback()
if !hasFallback {
return false