38 lines
1.1 KiB
Go
38 lines
1.1 KiB
Go
package tunnel
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import (
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"fmt"
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"github.com/cloudflare/cloudflared/tunneldns"
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"github.com/pkg/errors"
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"github.com/rs/zerolog"
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"github.com/urfave/cli/v2"
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)
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func runDNSProxyServer(c *cli.Context, dnsReadySignal chan struct{}, shutdownC <-chan struct{}, log *zerolog.Logger) error {
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port := c.Int("proxy-dns-port")
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if port <= 0 || port > 65535 {
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return errors.New("The 'proxy-dns-port' must be a valid port number in <1, 65535> range.")
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}
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maxUpstreamConnections := c.Int("proxy-dns-max-upstream-conns")
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if maxUpstreamConnections < 0 {
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return fmt.Errorf("'%s' must be 0 or higher", "proxy-dns-max-upstream-conns")
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}
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listener, err := tunneldns.CreateListener(c.String("proxy-dns-address"), uint16(port), c.StringSlice("proxy-dns-upstream"), c.StringSlice("proxy-dns-bootstrap"), maxUpstreamConnections, log)
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if err != nil {
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close(dnsReadySignal)
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listener.Stop()
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return errors.Wrap(err, "Cannot create the DNS over HTTPS proxy server")
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}
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err = listener.Start(dnsReadySignal)
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if err != nil {
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return errors.Wrap(err, "Cannot start the DNS over HTTPS proxy server")
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}
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<-shutdownC
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_ = listener.Stop()
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log.Info().Msg("DNS server stopped")
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return nil
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}
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