start onion PR campaign project

onion/onion.go

@@ -0,0 +1,50 @@
+package i2pdotonion
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"net"
+	"net/http"
+	"time"
+
+	"github.com/cretz/bine/tor"
+)
+
+type I2POnionService struct {
+	OnionService net.Listener
+}
+
+func (ios *I2POnionService) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	fmt.Println("ServeHTTP")
+}
+
+func (ios *I2POnionService) Listen(net, addr string) (net.Listener, error) {
+	if ios.OnionService != nil {
+		return ios.OnionService, nil
+	}
+	fmt.Println("Starting and registering onion service, please wait a couple of minutes...")
+	tb, err := tor.Start(nil, nil)
+	if err != nil {
+		log.Panicf("Unable to start Tor: %v", err)
+	}
+	defer tb.Close()
+	// Wait at most a few minutes to publish the service
+	listenCtx, listenCancel := context.WithTimeout(context.Background(), 3*time.Minute)
+	defer listenCancel()
+	// Create a v3 onion service to listen on any port but show as 80
+	ios.OnionService, err = tb.Listen(listenCtx, &tor.ListenConf{Version3: true, RemotePorts: []int{80}})
+	if err != nil {
+		log.Panicf("Unable to create onion service: %v", err)
+	}
+	return ios.OnionService, nil
+}
+
+func (ios *I2POnionService) ListenAndServe() error {
+	var err error
+	ios.OnionService, err = ios.Listen("", "")
+	if err != nil {
+		return err
+	}
+	return http.Serve(ios.OnionService, ios)
+}