chore: initial commit

cmd/client/main.go

@@ -0,0 +1,65 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"math/rand"
+	"time"
+
+	"cdr.dev/slog"
+	"forge.cadoles.com/wpetit/go-tunnel"
+	"gitlab.com/wpetit/goweb/logger"
+)
+
+const sharedKey = "go-tunnel"
+const salt = "go-tunnel"
+
+func main() {
+	var (
+		clientID string
+	)
+
+	flag.StringVar(&clientID, "id", "", "Client ID")
+	flag.Parse()
+
+	ctx := context.Background()
+	ctx = logger.With(ctx, logger.F("clientID", clientID))
+
+	logger.SetLevel(slog.LevelDebug)
+
+	client := tunnel.NewClient(
+		tunnel.WithClientCredentials(clientID),
+		tunnel.WithClientAESBlockCrypt(sharedKey, salt),
+	)
+	defer client.Close()
+
+	initialBackoff := time.Second * 10
+	backoff := initialBackoff
+
+	sleep := func() {
+		backoff = backoff*2 + (time.Duration(rand.Intn(int(initialBackoff))))
+
+		logger.Info(ctx, "sleeping", logger.F("duration", backoff))
+		time.Sleep(backoff)
+	}
+
+	for {
+		logger.Info(ctx, "connecting")
+
+		if err := client.Connect(ctx); err != nil {
+			logger.Error(ctx, "could not connect", logger.E(err))
+			sleep()
+
+			continue
+		}
+
+		logger.Info(ctx, "waiting for instructions")
+
+		if err := client.Listen(ctx); err != nil {
+			logger.Error(ctx, "error while listening", logger.E(err))
+		}
+
+		logger.Info(ctx, "connection lost")
+		sleep()
+	}
+}