cloudflared-mirror/cmd/cloudflared/tunnel/server.go

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package tunnel
import (
"github.com/cloudflare/cloudflared/logger"
"github.com/cloudflare/cloudflared/tunneldns"
"gopkg.in/urfave/cli.v2"
"github.com/pkg/errors"
)
func runDNSProxyServer(c *cli.Context, dnsReadySignal, shutdownC chan struct{}, logger logger.Service) error {
port := c.Int("proxy-dns-port")
if port <= 0 || port > 65535 {
return errors.New("The 'proxy-dns-port' must be a valid port number in <1, 65535> range.")
}
listener, err := tunneldns.CreateListener(c.String("proxy-dns-address"), uint16(port), c.StringSlice("proxy-dns-upstream"), c.StringSlice("proxy-dns-bootstrap"), logger)
if err != nil {
close(dnsReadySignal)
listener.Stop()
return errors.Wrap(err, "Cannot create the DNS over HTTPS proxy server")
}
err = listener.Start(dnsReadySignal)
if err != nil {
return errors.Wrap(err, "Cannot start the DNS over HTTPS proxy server")
}
<-shutdownC
listener.Stop()
return nil
}