sr.aux1.dev
HTTP reverse proxy for Tailscale
log gateway errors
The default handler logs to the global stdlib logger. This uses our
structured logger and adds the upstream to the log line.
+5
-2
+1
-2
main.go
+1
-2
main.go
···
136
136
}
137
137
138
138
logger := slog.New(slog.NewJSONHandler(os.Stderr))
139
-
// see ReverseProxy.ErrorLog; this ensures these logs go to our logger.
140
139
slog.SetDefault(logger)
141
140
142
141
st, err := tsWaitStatusReady(ctx, &tailscale.LocalClient{})
···
223
222
Handler: promhttp.InstrumentHandlerInFlight(requestsInFlight,
224
223
promhttp.InstrumentHandlerDuration(duration,
225
224
promhttp.InstrumentHandlerCounter(requests,
226
-
newReverseProxy(log, lc, upstream.backend)))),
225
+
newReverseProxy(log.With(slog.String("upstream", upstream.name)), lc, upstream.backend)))),
227
226
}
228
227
229
228
g.Add(func() error {
+4
tsproxy.go
+4
tsproxy.go
···
61
61
req.Out.Host = req.In.Host
62
62
},
63
63
}
64
+
rproxy.ErrorHandler = func(w http.ResponseWriter, r *http.Request, err error) {
65
+
http.Error(w, http.StatusText(http.StatusBadGateway), http.StatusBadGateway)
66
+
logger.Error("upstream error", err)
67
+
}
64
68
65
69
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
66
70
whois, err := lc.WhoIs(r.Context(), r.RemoteAddr)