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

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package tunnel
import (
"encoding/json"
"fmt"
"net/http"
"strings"
"time"
"github.com/google/uuid"
"github.com/pkg/errors"
"github.com/cloudflare/cloudflared/connection"
)
const httpTimeout = 15 * time.Second
const disclaimer = "Thank you for trying Cloudflare Tunnel. Doing so, without a Cloudflare account, is a quick way to" +
" experiment and try it out. However, be aware that these account-less Tunnels have no uptime guarantee. If you " +
"intend to use Tunnels in production you should use a pre-created named tunnel by following: " +
"https://developers.cloudflare.com/cloudflare-one/connections/connect-apps"
// RunQuickTunnel requests a tunnel from the specified service.
// We use this to power quick tunnels on trycloudflare.com, but the
// service is open-source and could be used by anyone.
func RunQuickTunnel(sc *subcommandContext) error {
sc.log.Info().Msg(disclaimer)
sc.log.Info().Msg("Requesting new quick Tunnel on trycloudflare.com...")
client := http.Client{
Transport: &http.Transport{
TLSHandshakeTimeout: httpTimeout,
ResponseHeaderTimeout: httpTimeout,
},
Timeout: httpTimeout,
}
resp, err := client.Post(fmt.Sprintf("%s/tunnel", sc.c.String("quick-service")), "application/json", nil)
if err != nil {
return errors.Wrap(err, "failed to request quick Tunnel")
}
defer resp.Body.Close()
var data QuickTunnelResponse
if err := json.NewDecoder(resp.Body).Decode(&data); err != nil {
return errors.Wrap(err, "failed to unmarshal quick Tunnel")
}
tunnelID, err := uuid.Parse(data.Result.ID)
if err != nil {
return errors.Wrap(err, "failed to parse quick Tunnel ID")
}
credentials := connection.Credentials{
AccountTag: data.Result.AccountTag,
TunnelSecret: data.Result.Secret,
TunnelID: tunnelID,
}
url := data.Result.Hostname
if !strings.HasPrefix(url, "https://") {
url = "https://" + url
}
for _, line := range AsciiBox([]string{
"Your quick Tunnel has been created! Visit it at (it may take some time to be reachable):",
url,
}, 2) {
sc.log.Info().Msg(line)
}
if !sc.c.IsSet("protocol") {
sc.c.Set("protocol", "quic")
}
// Override the number of connections used. Quick tunnels shouldn't be used for production usage,
// so, use a single connection instead.
sc.c.Set(haConnectionsFlag, "1")
return StartServer(
sc.c,
buildInfo,
&connection.TunnelProperties{Credentials: credentials, QuickTunnelUrl: data.Result.Hostname},
sc.log,
)
}
type QuickTunnelResponse struct {
Success bool
Result QuickTunnel
Errors []QuickTunnelError
}
type QuickTunnelError struct {
Code int
Message string
}
type QuickTunnel struct {
ID string `json:"id"`
Name string `json:"name"`
Hostname string `json:"hostname"`
AccountTag string `json:"account_tag"`
Secret []byte `json:"secret"`
}
// Print out the given lines in a nice ASCII box.
func AsciiBox(lines []string, padding int) (box []string) {
maxLen := maxLen(lines)
spacer := strings.Repeat(" ", padding)
border := "+" + strings.Repeat("-", maxLen+(padding*2)) + "+"
box = append(box, border)
for _, line := range lines {
box = append(box, "|"+spacer+line+strings.Repeat(" ", maxLen-len(line))+spacer+"|")
}
box = append(box, border)
return
}
func maxLen(lines []string) int {
max := 0
for _, line := range lines {
if len(line) > max {
max = len(line)
}
}
return max
}