Function StartServer

cmd/cloudflared/tunnel/cmd.go:318–524

(
	c *cli.Context,
	info *cliutil.BuildInfo,
	namedTunnel *connection.TunnelProperties,
	log *zerolog.Logger,
)

}

func StartServer(
	c *cli.Context,
	info *cliutil.BuildInfo,
	namedTunnel *connection.TunnelProperties,
	log *zerolog.Logger,
) error {
	err := sentry.Init(sentry.ClientOptions{
		Dsn:     sentryDSN,
		Release: c.App.Version,
	})
	if err != nil {
		return err
	}
	var wg sync.WaitGroup
	listeners := gracenet.Net{}
	errC := make(chan error)

	// Only log for locally configured tunnels (Token is blank).
	if config.GetConfiguration().Source() == "" && c.String(TunnelTokenFlag) == "" {
		log.Info().Msg(config.ErrNoConfigFile.Error())
	}

	if c.IsSet(cfdflags.TraceOutput) {
		tmpTraceFile, err := os.CreateTemp("", "trace")
		if err != nil {
			log.Err(err).Msg("Failed to create new temporary file to save trace output")
		}

		traceLog := log.With().Str(LogFieldTmpTraceFilename, tmpTraceFile.Name()).Logger()

		defer func() {
			if err := tmpTraceFile.Close(); err != nil {
				traceLog.Err(err).Msg("Failed to close temporary trace output file")
			}
			traceOutputFilepath := c.String(cfdflags.TraceOutput)
			//nolint:gosec // File path is safe because it is explicitly provided by the user via the --trace-output flag
			if err := os.Rename(tmpTraceFile.Name(), traceOutputFilepath); err != nil {
				traceLog.
					Err(err).
					Str(LogFieldTraceOutputFilepath, traceOutputFilepath).
					Msg("Failed to rename temporary trace output file")
			} else {
				//nolint:gosec // File path is safe, since it is created by os.CreateTemp
				err := os.Remove(tmpTraceFile.Name())
				if err != nil {
					traceLog.Err(err).Msg("Failed to remove the temporary trace file")
				}
			}
		}()

		if err := trace.Start(tmpTraceFile); err != nil {
			traceLog.Err(err).Msg("Failed to start trace")
			return errors.Wrap(err, "Error starting tracing")
		}
		defer trace.Stop()
	}

	info.Log(log)