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Warn when Headscale is running behind a wrongly configured proxy

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Juan Font Alonso 2022-09-04 16:05:21 +02:00
parent 7c49c752a9
commit 2262188d8a
1 changed files with 13 additions and 0 deletions
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13
noise.go
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@ -23,6 +23,19 @@ func (h *Headscale) NoiseUpgradeHandler(
) {
log.Trace().Caller().Msgf("Noise upgrade handler for client %s", req.RemoteAddr)
upgrade := req.Header.Get("Upgrade")
if upgrade == "" {
// This probably means that the user is running Headscale behind an
// improperly configured reverse proxy. TS2021 requires WebSockets to
// be passed to Headscale. Let's give them a hint.
log.Warn().
Caller().
Msg("No Upgrade header found in TS2021 request. If running headscale behind a reverse proxy, make sure it is configured to pass WebSockets through.")
http.Error(writer, "Internal error", http.StatusInternalServerError)
return
}
noiseConn, err := controlhttp.AcceptHTTP(req.Context(), writer, req, *h.noisePrivateKey)
if err != nil {
log.Error().Err(err).Msg("noise upgrade failed")