feat: implement sessions request from grpc server

feat: implement get sessions by user
2026-01-03 21:17:01 +07:00 · 2026-01-03 20:06:14 +07:00 · 2026-01-02 22:58:54 +07:00 · 2026-01-02 18:27:48 +07:00 · 2026-01-01 21:03:17 +07:00 · 2026-01-01 21:01:15 +07:00
37 changed files with 2814 additions and 1043 deletions
--- a/.dockerignore
+++ b/.dockerignore
@@ -0,0 +1,32 @@
+.git/
+.github/
+.gitea/
+.gitignore
+
+.idea/
+*.swp
+*.swo
+*~
+
+tmp/
+*.log
+
+.env
+.env.*
+
+certs/
+id_rsa*
+*.pub
+
+README.md
+LICENSE.md
+*.md
+
+renovate.json
+renovate-config.js
+
+*_test.go
+testdata/
+
+app
+
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -5,14 +5,25 @@ on:
    branches:
      - main
      - staging
+    tags:
+      - 'v*'
+    paths:
+      - '**.go'
+      - 'go.mod'
+      - 'go.sum'
+      - 'Dockerfile'
+      - 'Dockerfile.*'
+      - '.dockerignore'
+      - '.gitea/workflows/build.yml'

 jobs:
-  build-and-push:
+  build-and-push-branches:
    runs-on: ubuntu-latest
+    if: github.ref_type == 'branch'

    steps:
      - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
@@ -24,6 +35,17 @@ jobs:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

+      - name: Set version variables
+        id: vars
+        run: |
+          if [ "${{ github.ref }}" == "refs/heads/main" ]; then
+            echo "VERSION=dev-main" >> $GITHUB_OUTPUT
+          else
+            echo "VERSION=dev-staging" >> $GITHUB_OUTPUT
+          fi
+          echo "BUILD_DATE=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> $GITHUB_OUTPUT
+          echo "COMMIT=${{ github.sha }}" >> $GITHUB_OUTPUT
+
      - name: Build and push Docker image for main
        uses: docker/build-push-action@v6
        with:
@@ -32,6 +54,10 @@ jobs:
          tags: |
            git.fossy.my.id/${{ secrets.DOCKER_USERNAME }}/tunnel-please:latest
          platforms: linux/amd64,linux/arm64
+          build-args: |
+            VERSION=${{ steps.vars.outputs.VERSION }}
+            BUILD_DATE=${{ steps.vars.outputs.BUILD_DATE }}
+            COMMIT=${{ steps.vars.outputs.COMMIT }}
        if: github.ref == 'refs/heads/main'

      - name: Build and push Docker image for staging
@@ -42,4 +68,85 @@ jobs:
          tags: |
            git.fossy.my.id/${{ secrets.DOCKER_USERNAME }}/tunnel-please:staging
          platforms: linux/amd64,linux/arm64
-        if: github.ref == 'refs/heads/staging'
+          build-args: |
+            VERSION=${{ steps.vars.outputs.VERSION }}
+            BUILD_DATE=${{ steps.vars.outputs.BUILD_DATE }}
+            COMMIT=${{ steps.vars.outputs.COMMIT }}
+        if: github.ref == 'refs/heads/staging'
+
+  build-and-push-tags:
+    runs-on: ubuntu-latest
+    if: github.ref_type == 'tag' && startsWith(github.ref, 'refs/tags/v')
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          registry: git.fossy.my.id
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Extract version and determine release type
+        id: version
+        run: |
+          VERSION=${GITHUB_REF#refs/tags/v}
+          echo "VERSION=$VERSION" >> $GITHUB_OUTPUT
+          echo "BUILD_DATE=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> $GITHUB_OUTPUT
+          echo "COMMIT=${{ github.sha }}" >> $GITHUB_OUTPUT
+          
+          if echo "$VERSION" | grep -qE '^[0-9]+\.[0-9]+\.[0-9]+(-[a-zA-Z0-9.]+)?$'; then
+            MAJOR=$(echo "$VERSION" | cut -d. -f1)
+            MINOR=$(echo "$VERSION" | cut -d. -f2)
+            
+            echo "MAJOR=$MAJOR" >> $GITHUB_OUTPUT
+            echo "MINOR=$MINOR" >> $GITHUB_OUTPUT
+            
+            if echo "$VERSION" | grep -q '-'; then
+              echo "IS_PRERELEASE=true" >> $GITHUB_OUTPUT
+              echo "ADDITIONAL_TAG=staging" >> $GITHUB_OUTPUT
+            else
+              echo "IS_PRERELEASE=false" >> $GITHUB_OUTPUT
+              echo "ADDITIONAL_TAG=latest" >> $GITHUB_OUTPUT
+            fi
+          else
+            echo "Invalid version format: $VERSION"
+            exit 1
+          fi
+
+      - name: Build and push Docker image for release
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          tags: |
+            git.fossy.my.id/${{ secrets.DOCKER_USERNAME }}/tunnel-please:v${{ steps.version.outputs.VERSION }}
+            git.fossy.my.id/${{ secrets.DOCKER_USERNAME }}/tunnel-please:v${{ steps.version.outputs.MAJOR }}.${{ steps.version.outputs.MINOR }}
+            git.fossy.my.id/${{ secrets.DOCKER_USERNAME }}/tunnel-please:v${{ steps.version.outputs.MAJOR }}
+            git.fossy.my.id/${{ secrets.DOCKER_USERNAME }}/tunnel-please:${{ steps.version.outputs.ADDITIONAL_TAG }}
+          platforms: linux/amd64,linux/arm64
+          build-args: |
+            VERSION=${{ steps.version.outputs.VERSION }}
+            BUILD_DATE=${{ steps.version.outputs.BUILD_DATE }}
+            COMMIT=${{ steps.version.outputs.COMMIT }}
+        if: steps.version.outputs.IS_PRERELEASE == 'false'
+
+      - name: Build and push Docker image for pre-release
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          tags: |
+            git.fossy.my.id/${{ secrets.DOCKER_USERNAME }}/tunnel-please:v${{ steps.version.outputs.VERSION }}
+            git.fossy.my.id/${{ secrets.DOCKER_USERNAME }}/tunnel-please:${{ steps.version.outputs.ADDITIONAL_TAG }}
+          platforms: linux/amd64,linux/arm64
+          build-args: |
+            VERSION=${{ steps.version.outputs.VERSION }}
+            BUILD_DATE=${{ steps.version.outputs.BUILD_DATE }}
+            COMMIT=${{ steps.version.outputs.COMMIT }}
+        if: steps.version.outputs.IS_PRERELEASE == 'true'
--- a/.gitea/workflows/renovate.yml
+++ b/.gitea/workflows/renovate.yml
@@ -5,16 +5,17 @@ on:
    - cron: "0 0 * * *"
  push:
    branches:
-      - main
+      - staging

 jobs:
  renovate:
    runs-on: ubuntu-latest
    container: git.fossy.my.id/renovate-clanker/renovate:latest
    steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
      - run: renovate
        env:
          RENOVATE_CONFIG_FILE: ${{ gitea.workspace }}/renovate-config.js
          LOG_LEVEL: "debug"
-          RENOVATE_TOKEN: ${{ secrets.RENOVATE_TOKEN }}
+          RENOVATE_TOKEN: ${{ secrets.RENOVATE_TOKEN }}
+          GITHUB_COM_TOKEN: ${{ secrets.COM_TOKEN }}
--- a/.github/workflows/sync-to-gitea.yml
+++ b/.github/workflows/sync-to-gitea.yml
@@ -14,7 +14,7 @@ jobs:

    steps:
      - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
        with:
          fetch-depth: 0

--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@ id_rsa*
 .env
 tmp
 certs
+app
--- a/53
+++ b/53
@@ -1,20 +1,59 @@
 FROM golang:1.25.5-alpine AS go_builder

+ARG VERSION=dev
+ARG BUILD_DATE=unknown
+ARG COMMIT=unknown
+
+RUN apk update && apk upgrade && \
+    apk add --no-cache ca-certificates tzdata git && \
+    update-ca-certificates
+
 WORKDIR /src
+
+COPY go.mod go.sum ./
+
+RUN --mount=type=cache,target=/go/pkg/mod \
+    --mount=type=cache,target=/root/.cache/go-build \
+    go mod download && go mod verify
+
 COPY . .

-RUN apk update && apk upgrade && apk add --no-cache ca-certificates tzdata
-RUN update-ca-certificates
-RUN go build -o ./tmp/main
+RUN --mount=type=cache,target=/go/pkg/mod \
+    --mount=type=cache,target=/root/.cache/go-build \
+    CGO_ENABLED=0 GOOS=linux \
+    go build -trimpath \
+    -ldflags="-w -s -X tunnel_pls/version.Version=${VERSION} -X tunnel_pls/version.BuildDate=${BUILD_DATE} -X tunnel_pls/version.Commit=${COMMIT}" \
+    -o /app/tunnel_pls \
+    .
+
+RUN adduser -D -u 10001 -g '' appuser && \
+    mkdir -p /app/certs/ssh /app/certs/tls && \
+    chown -R appuser:appuser /app

 FROM scratch

-WORKDIR /src
+ARG VERSION=dev
+ARG BUILD_DATE=unknown
+ARG COMMIT=unknown

 COPY --from=go_builder /usr/share/zoneinfo /usr/share/zoneinfo
 COPY --from=go_builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
-COPY --from=go_builder /src/tmp/main /src
+COPY --from=go_builder /etc/passwd /etc/passwd
+COPY --from=go_builder /etc/group /etc/group
+COPY --from=go_builder --chown=appuser:appuser /app /app

-ENV TZ Asia/Jakarta
+WORKDIR /app

-ENTRYPOINT ["./main"]
+USER appuser
+
+ENV TZ=Asia/Jakarta
+
+EXPOSE 2200 8080 8443
+
+LABEL org.opencontainers.image.title="Tunnel Please" \
+      org.opencontainers.image.description="SSH-based tunnel server" \
+      org.opencontainers.image.version="${VERSION}" \
+      org.opencontainers.image.revision="${COMMIT}" \
+      org.opencontainers.image.created="${BUILD_DATE}"
+
+ENTRYPOINT ["/app/tunnel_pls"]
--- a/README.md
+++ b/README.md
@@ -6,7 +6,6 @@ A lightweight SSH-based tunnel server written in Go that enables secure TCP and

 - SSH interactive session with real-time command handling
 - Custom subdomain management for HTTP tunnels
- Active connection control with drop functionality
 - Dual protocol support: HTTP and TCP tunnels
 - Real-time connection monitoring
 ## Requirements
@@ -22,20 +21,22 @@ The following environment variables can be configured in the `.env` file:
 |----------|-------------|---------|----------|
 | `DOMAIN` | Domain name for subdomain routing | `localhost` | No |
 | `PORT` | SSH server port | `2200` | No |
+| `HTTP_PORT` | HTTP server port | `8080` | No |
+| `HTTPS_PORT` | HTTPS server port | `8443` | No |
 | `TLS_ENABLED` | Enable TLS/HTTPS | `false` | No |
 | `TLS_REDIRECT` | Redirect HTTP to HTTPS | `false` | No |
-| `CERT_LOC` | Path to TLS certificate | `certs/cert.pem` | No |
-| `KEY_LOC` | Path to TLS private key | `certs/privkey.pem` | No |
-| `CERT_STORAGE_PATH` | Path for CertMagic certificate storage | `certs/certmagic` | No |
 | `ACME_EMAIL` | Email for Let's Encrypt registration | `admin@<DOMAIN>` | No |
 | `CF_API_TOKEN` | Cloudflare API token for DNS-01 challenge | - | Yes (if auto-cert) |
 | `ACME_STAGING` | Use Let's Encrypt staging server | `false` | No |
-| `SSH_PRIVATE_KEY` | Path to SSH private key (auto-generated if missing) | `certs/id_rsa` | No |
 | `CORS_LIST` | Comma-separated list of allowed CORS origins | - | No |
 | `ALLOWED_PORTS` | Port range for TCP tunnels (e.g., 40000-41000) | `40000-41000` | No |
 | `BUFFER_SIZE` | Buffer size for io.Copy operations in bytes (4096-1048576) | `32768` | No |
 | `PPROF_ENABLED` | Enable pprof profiling server | `false` | No |
 | `PPROF_PORT` | Port for pprof server | `6060` | No |
+| `MODE` | Runtime mode: `standalone` (default, no gRPC/auth) or `node` (enable gRPC + auth) | `standalone` | No |
+| `GRPC_ADDRESS` | gRPC server address/host used in `node` mode | `localhost` | No |
+| `GRPC_PORT` | gRPC server port used in `node` mode | `8080` | No |
+| `NODE_TOKEN` | Authentication token sent to controller in `node` mode | - (required in `node`) | Yes (node mode) |

 **Note:** All environment variables now use UPPERCASE naming. The application includes sensible defaults for all variables, so you can run it without a `.env` file for basic functionality.

@@ -43,8 +44,14 @@ The following environment variables can be configured in the `.env` file:

 The server supports automatic TLS certificate generation and renewal using [CertMagic](https://github.com/caddyserver/certmagic) with Cloudflare DNS-01 challenge. This is required for wildcard certificate support (`*.yourdomain.com`).

+**Certificate Storage:**
+- TLS certificates are stored in `certs/tls/` (relative to application directory)
+- User-provided certificates: `certs/tls/cert.pem` and `certs/tls/privkey.pem`
+- CertMagic automatic certificates: `certs/tls/certmagic/`
+- SSH keys are stored separately in `certs/ssh/`
+
 **How it works:**
-1. If user-provided certificates (`CERT_LOC`, `KEY_LOC`) exist and cover both `DOMAIN` and `*.DOMAIN`, they will be used
+1. If user-provided certificates exist at `certs/tls/cert.pem` and `certs/tls/privkey.pem` and cover both `DOMAIN` and `*.DOMAIN`, they will be used
 2. If certificates are missing, expired, expiring within 30 days, or don't cover the required domains, CertMagic will automatically obtain new certificates from Let's Encrypt
 3. Certificates are automatically renewed before expiration
 4. User-provided certificates support hot-reload (changes detected every 30 seconds)
@@ -71,7 +78,7 @@ ACME_EMAIL=admin@example.com

 ### SSH Key Auto-Generation

-If the SSH private key specified in `SSH_PRIVATE_KEY` doesn't exist, the application will automatically generate a new 4096-bit RSA key pair at the specified location. This makes it easier to get started without manually creating SSH keys.
+The application will automatically generate a new 4096-bit RSA key pair at `certs/ssh/id_rsa` if it doesn't exist. This makes it easier to get started without manually creating SSH keys. SSH keys are stored separately from TLS certificates.

 ### Memory Optimization

@@ -112,6 +119,110 @@ go tool pprof http://localhost:6060/debug/pprof/profile?seconds=30
 go tool pprof http://localhost:6060/debug/pprof/heap
 ```

+## Docker Deployment
+
+Three Docker Compose configurations are available for different deployment scenarios. Each configuration uses the image `git.fossy.my.id/bagas/tunnel-please:latest`.
+
+### Configuration Options
+
+#### 1. Root with Host Networking (RECOMMENDED)
+
+**File:** `docker-compose.root.yml`
+
+**Advantages:**
+- Full TCP port forwarding support (ports 40000-41000)
+- Direct binding to privileged ports (80, 443, 2200)
+- Best performance with no NAT overhead
+- Maximum flexibility for all tunnel types
+- No port mapping limitations
+
+**Use Case:** Production deployments where you need unrestricted TCP forwarding and maximum performance.
+
+**Deploy:**
+```bash
+docker-compose -f docker-compose.root.yml up -d
+```
+
+#### 2. Standard (HTTP/HTTPS Only)
+
+**File:** `docker-compose.standard.yml`
+
+**Advantages:**
+- Runs with unprivileged user (more secure)
+- Standard port mappings (2200, 80, 443)
+- Simple and predictable networking
+- TCP port forwarding disabled (`ALLOWED_PORTS=none`)
+
+**Use Case:** Deployments where you only need HTTP/HTTPS tunneling without custom TCP port forwarding.
+
+**Deploy:**
+```bash
+docker-compose -f docker-compose.standard.yml up -d
+```
+
+#### 3. Limited TCP Forwarding
+
+**File:** `docker-compose.tcp.yml`
+
+**Advantages:**
+- Runs with unprivileged user (more secure)
+- Standard port mappings (2200, 80, 443)
+- Limited TCP forwarding (ports 30000-31000)
+- Controlled port range exposure
+
+**Use Case:** Deployments where you need both HTTP/HTTPS tunneling and limited TCP forwarding within a specific port range.
+
+**Deploy:**
+```bash
+docker-compose -f docker-compose.tcp.yml up -d
+```
+
+### Quick Start
+
+1. **Choose your configuration** based on your requirements
+2. **Edit the environment variables** in the chosen compose file:
+   - `DOMAIN`: Your domain name (e.g., `example.com`)
+   - `ACME_EMAIL`: Your email for Let's Encrypt
+   - `CF_API_TOKEN`: Your Cloudflare API token (if using automatic TLS)
+3. **Deploy:**
+   ```bash
+   docker-compose -f docker-compose.root.yml up -d
+   ```
+4. **Check logs:**
+   ```bash
+   docker-compose -f docker-compose.root.yml logs -f
+   ```
+5. **Stop the service:**
+   ```bash
+   docker-compose -f docker-compose.root.yml down
+   ```
+
+### Volume Management
+
+All configurations use a named volume `certs` for persistent storage:
+- SSH keys: `/app/certs/ssh/`
+- TLS certificates: `/app/certs/tls/`
+
+To backup certificates:
+```bash
+docker run --rm -v tunnel_pls_certs:/data -v $(pwd):/backup alpine tar czf /backup/certs-backup.tar.gz -C /data .
+```
+
+To restore certificates:
+```bash
+docker run --rm -v tunnel_pls_certs:/data -v $(pwd):/backup alpine tar xzf /backup/certs-backup.tar.gz -C /data
+```
+
+### Recommendation
+
+**Use `docker-compose.root.yml`** for production deployments if you need:
+- Full TCP port forwarding capabilities
+- Any port range configuration
+- Direct port binding without mapping overhead
+- Maximum performance and flexibility
+
+This is the recommended configuration for most use cases as it provides the complete feature set without limitations.
+
 ## Contributing
 Contributions are welcome!

--- a/docker-compose.root.yml
+++ b/docker-compose.root.yml
@@ -0,0 +1,37 @@
+version: '3.8'
+
+services:
+  tunnel-please:
+    image: git.fossy.my.id/bagas/tunnel-please:latest
+    container_name: tunnel-please-root
+    user: root
+    network_mode: host
+    restart: unless-stopped
+    volumes:
+      - certs:/app/certs
+    environment:
+      DOMAIN: example.com
+      PORT: 2200
+      HTTP_PORT: 8080
+      HTTPS_PORT: 8443
+      TLS_ENABLED: "true"
+      TLS_REDIRECT: "true"
+      ACME_EMAIL: admin@example.com
+      CF_API_TOKEN: your_cloudflare_api_token_here
+      ACME_STAGING: "false"
+      CORS_LIST: http://localhost:3000,https://example.com
+      ALLOWED_PORTS: 40000-41000
+      BUFFER_SIZE: 32768
+      PPROF_ENABLED: "false"
+      PPROF_PORT: 6060
+    healthcheck:
+      test: ["CMD", "/bin/sh", "-c", "netstat -tln | grep -q :2200"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s
+
+volumes:
+  certs:
+    driver: local
+
--- a/docker-compose.standard.yml
+++ b/docker-compose.standard.yml
@@ -0,0 +1,39 @@
+version: '3.8'
+
+services:
+  tunnel-please:
+    image: git.fossy.my.id/bagas/tunnel-please:latest
+    container_name: tunnel-please-standard
+    restart: unless-stopped
+    ports:
+      - "2200:2200"
+      - "80:8080"
+      - "443:8443"
+    volumes:
+      - certs:/app/certs
+    environment:
+      DOMAIN: example.com
+      PORT: 2200
+      HTTP_PORT: 8080
+      HTTPS_PORT: 8443
+      TLS_ENABLED: "true"
+      TLS_REDIRECT: "true"
+      ACME_EMAIL: admin@example.com
+      CF_API_TOKEN: your_cloudflare_api_token_here
+      ACME_STAGING: "false"
+      CORS_LIST: http://localhost:3000,https://example.com
+      ALLOWED_PORTS: none
+      BUFFER_SIZE: 32768
+      PPROF_ENABLED: "false"
+      PPROF_PORT: 6060
+    healthcheck:
+      test: ["CMD", "/bin/sh", "-c", "netstat -tln | grep -q :2200"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s
+
+volumes:
+  certs:
+    driver: local
+
--- a/docker-compose.tcp.yml
+++ b/docker-compose.tcp.yml
@@ -0,0 +1,40 @@
+version: '3.8'
+
+services:
+  tunnel-please:
+    image: git.fossy.my.id/bagas/tunnel-please:latest
+    container_name: tunnel-please-tcp
+    restart: unless-stopped
+    ports:
+      - "2200:2200"
+      - "80:8080"
+      - "443:8443"
+      - "30000-31000:30000-31000"
+    volumes:
+      - certs:/app/certs
+    environment:
+      DOMAIN: example.com
+      PORT: 2200
+      HTTP_PORT: 8080
+      HTTPS_PORT: 8443
+      TLS_ENABLED: "true"
+      TLS_REDIRECT: "true"
+      ACME_EMAIL: admin@example.com
+      CF_API_TOKEN: your_cloudflare_api_token_here
+      ACME_STAGING: "false"
+      CORS_LIST: http://localhost:3000,https://example.com
+      ALLOWED_PORTS: 30000-31000
+      BUFFER_SIZE: 32768
+      PPROF_ENABLED: "false"
+      PPROF_PORT: 6060
+    healthcheck:
+      test: ["CMD", "/bin/sh", "-c", "netstat -tln | grep -q :2200"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s
+
+volumes:
+  certs:
+    driver: local
+
--- a/go.mod
+++ b/go.mod
@@ -1,28 +1,55 @@
 module tunnel_pls

-go 1.24.4
+go 1.25.5

 require (
+	git.fossy.my.id/bagas/tunnel-please-grpc v1.2.0
 	github.com/caddyserver/certmagic v0.25.0
+	github.com/charmbracelet/bubbles v0.21.0
+	github.com/charmbracelet/bubbletea v1.3.10
+	github.com/charmbracelet/lipgloss v1.1.0
 	github.com/joho/godotenv v1.5.1
 	github.com/libdns/cloudflare v0.2.2
+	github.com/muesli/termenv v0.16.0
 	golang.org/x/crypto v0.46.0
+	google.golang.org/grpc v1.78.0
+	google.golang.org/protobuf v1.36.11
 )

 require (
+	github.com/atotto/clipboard v0.1.4 // indirect
+	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
 	github.com/caddyserver/zerossl v0.1.3 // indirect
+	github.com/charmbracelet/colorprofile v0.4.1 // indirect
+	github.com/charmbracelet/x/ansi v0.11.3 // indirect
+	github.com/charmbracelet/x/cellbuf v0.0.14 // indirect
+	github.com/charmbracelet/x/term v0.2.2 // indirect
+	github.com/clipperhouse/displaywidth v0.6.2 // indirect
+	github.com/clipperhouse/stringish v0.1.1 // indirect
+	github.com/clipperhouse/uax29/v2 v2.3.0 // indirect
+	github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
 	github.com/libdns/libdns v1.1.1 // indirect
-	github.com/mholt/acmez/v3 v3.1.3 // indirect
-	github.com/miekg/dns v1.1.68 // indirect
+	github.com/lucasb-eyer/go-colorful v1.3.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-localereader v0.0.1 // indirect
+	github.com/mattn/go-runewidth v0.0.19 // indirect
+	github.com/mholt/acmez/v3 v3.1.4 // indirect
+	github.com/miekg/dns v1.1.69 // indirect
+	github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 // indirect
+	github.com/muesli/cancelreader v0.2.2 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/sahilm/fuzzy v0.1.1 // indirect
+	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
 	github.com/zeebo/blake3 v0.2.4 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	go.uber.org/zap v1.27.0 // indirect
+	go.uber.org/zap v1.27.1 // indirect
 	go.uber.org/zap/exp v0.3.0 // indirect
-	golang.org/x/mod v0.30.0 // indirect
-	golang.org/x/net v0.47.0 // indirect
+	golang.org/x/mod v0.31.0 // indirect
+	golang.org/x/net v0.48.0 // indirect
 	golang.org/x/sync v0.19.0 // indirect
 	golang.org/x/sys v0.39.0 // indirect
 	golang.org/x/text v0.32.0 // indirect
-	golang.org/x/tools v0.39.0 // indirect
+	golang.org/x/tools v0.40.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20251222181119-0a764e51fe1b // indirect
 )
--- a/go.sum
+++ b/go.sum
@@ -1,57 +1,142 @@
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-golang.org/x/net v0.47.0 h1:Mx+4dIFzqraBXUugkia1OOvlD6LemFo1ALMHjrXDOhY=
-golang.org/x/net v0.47.0/go.mod h1:/jNxtkgq5yWUGYkaZGqo27cfGZ1c5Nen03aYrrKpVRU=
-golang.org/x/sync v0.18.0 h1:kr88TuHDroi+UVf+0hZnirlk8o8T+4MrK6mr60WkH/I=
-golang.org/x/sync v0.18.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
+golang.org/x/exp v0.0.0-20231006140011-7918f672742d h1:jtJma62tbqLibJ5sFQz8bKtEM8rJBtfilJ2qTU199MI=
+golang.org/x/exp v0.0.0-20231006140011-7918f672742d/go.mod h1:ldy0pHrwJyGW56pPQzzkH36rKxoZW1tw7ZJpeKx+hdo=
+golang.org/x/mod v0.31.0 h1:HaW9xtz0+kOcWKwli0ZXy79Ix+UW/vOfmWI5QVd2tgI=
+golang.org/x/mod v0.31.0/go.mod h1:43JraMp9cGx1Rx3AqioxrbrhNsLl2l/iNAvuBkrezpg=
+golang.org/x/net v0.48.0 h1:zyQRTTrjc33Lhh0fBgT/H3oZq9WuvRR5gPC70xpDiQU=
+golang.org/x/net v0.48.0/go.mod h1:+ndRgGjkh8FGtu1w1FGbEC31if4VrNVMuKTgcAAnQRY=
 golang.org/x/sync v0.19.0 h1:vV+1eWNmZ5geRlYjzm2adRgW2/mcpevXNg50YZtPCE4=
 golang.org/x/sync v0.19.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
-golang.org/x/sys v0.29.0 h1:TPYlXGxvx1MGTn2GiZDhnjPA9wZzZeGKHHmKhHYvgaU=
-golang.org/x/sys v0.29.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/sys v0.38.0 h1:3yZWxaJjBmCWXqhN1qh02AkOnCQ1poK6oF+a7xWL6Gc=
-golang.org/x/sys v0.38.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.39.0 h1:CvCKL8MeisomCi6qNZ+wbb0DN9E5AATixKsvNtMoMFk=
 golang.org/x/sys v0.39.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
-golang.org/x/term v0.28.0 h1:/Ts8HFuMR2E6IP/jlo7QVLZHggjKQbhu/7H0LJFr3Gg=
-golang.org/x/term v0.28.0/go.mod h1:Sw/lC2IAUZ92udQNf3WodGtn4k/XoLyZoh8v/8uiwek=
-golang.org/x/term v0.37.0 h1:8EGAD0qCmHYZg6J17DvsMy9/wJ7/D/4pV/wfnld5lTU=
-golang.org/x/text v0.31.0 h1:aC8ghyu4JhP8VojJ2lEHBnochRno1sgL6nEi9WGFGMM=
-golang.org/x/text v0.31.0/go.mod h1:tKRAlv61yKIjGGHX/4tP1LTbc13YSec1pxVEWXzfoeM=
+golang.org/x/term v0.38.0 h1:PQ5pkm/rLO6HnxFR7N2lJHOZX6Kez5Y1gDSJla6jo7Q=
+golang.org/x/term v0.38.0/go.mod h1:bSEAKrOT1W+VSu9TSCMtoGEOUcKxOKgl3LE5QEF/xVg=
 golang.org/x/text v0.32.0 h1:ZD01bjUt1FQ9WJ0ClOL5vxgxOI/sVCNgX1YtKwcY0mU=
 golang.org/x/text v0.32.0/go.mod h1:o/rUWzghvpD5TXrTIBuJU77MTaN0ljMWE47kxGJQ7jY=
-golang.org/x/tools v0.38.0 h1:Hx2Xv8hISq8Lm16jvBZ2VQf+RLmbd7wVUsALibYI/IQ=
-golang.org/x/tools v0.38.0/go.mod h1:yEsQ/d/YK8cjh0L6rZlY8tgtlKiBNTL14pGDJPJpYQs=
-golang.org/x/tools v0.39.0 h1:ik4ho21kwuQln40uelmciQPp9SipgNDdrafrYA4TmQQ=
-golang.org/x/tools v0.39.0/go.mod h1:JnefbkDPyD8UU2kI5fuf8ZX4/yUeh9W877ZeBONxUqQ=
+golang.org/x/tools v0.40.0 h1:yLkxfA+Qnul4cs9QA3KnlFu0lVmd8JJfoq+E41uSutA=
+golang.org/x/tools v0.40.0/go.mod h1:Ik/tzLRlbscWpqqMRjyWYDisX8bG13FrdXp3o4Sr9lc=
+gonum.org/v1/gonum v0.16.0 h1:5+ul4Swaf3ESvrOnidPp4GZbzf0mxVQpDCYUQE7OJfk=
+gonum.org/v1/gonum v0.16.0/go.mod h1:fef3am4MQ93R2HHpKnLk4/Tbh/s0+wqD5nfa6Pnwy4E=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20251222181119-0a764e51fe1b h1:Mv8VFug0MP9e5vUxfBcE3vUkV6CImK3cMNMIDFjmzxU=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20251222181119-0a764e51fe1b/go.mod h1:j9x/tPzZkyxcgEFkiKEEGxfvyumM01BEtsW8xzOahRQ=
+google.golang.org/grpc v1.78.0 h1:K1XZG/yGDJnzMdd/uZHAkVqJE+xIDOcmdSFZkBUicNc=
+google.golang.org/grpc v1.78.0/go.mod h1:I47qjTo4OKbMkjA/aOOwxDIiPSBofUtQUI5EfpWvW7U=
+google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
+google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -0,0 +1,35 @@
+package config
+
+import (
+	"log"
+	"os"
+	"strconv"
+
+	"github.com/joho/godotenv"
+)
+
+func init() {
+	if _, err := os.Stat(".env"); err == nil {
+		if err := godotenv.Load(".env"); err != nil {
+			log.Printf("Warning: Failed to load .env file: %s", err)
+		}
+	}
+}
+
+func Getenv(key, defaultValue string) string {
+	val := os.Getenv(key)
+	if val == "" {
+		val = defaultValue
+	}
+
+	return val
+}
+
+func GetBufferSize() int {
+	sizeStr := Getenv("BUFFER_SIZE", "32768")
+	size, err := strconv.Atoi(sizeStr)
+	if err != nil || size < 4096 || size > 1048576 {
+		return 32768
+	}
+	return size
+}
--- a/internal/grpc/client/client.go
+++ b/internal/grpc/client/client.go
@@ -0,0 +1,377 @@
+package client
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"io"
+	"log"
+	"time"
+	"tunnel_pls/internal/config"
+
+	"tunnel_pls/session"
+
+	proto "git.fossy.my.id/bagas/tunnel-please-grpc/gen"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/grpc/health/grpc_health_v1"
+	"google.golang.org/grpc/keepalive"
+	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/types/known/timestamppb"
+)
+
+type GrpcConfig struct {
+	Address             string
+	UseTLS              bool
+	InsecureSkipVerify  bool
+	Timeout             time.Duration
+	KeepAlive           bool
+	MaxRetries          int
+	KeepAliveTime       time.Duration
+	KeepAliveTimeout    time.Duration
+	PermitWithoutStream bool
+}
+
+type Client struct {
+	conn                       *grpc.ClientConn
+	config                     *GrpcConfig
+	sessionRegistry            session.Registry
+	slugService                proto.SlugChangeClient
+	eventService               proto.EventServiceClient
+	authorizeConnectionService proto.UserServiceClient
+}
+
+func DefaultConfig() *GrpcConfig {
+	return &GrpcConfig{
+		Address:             "localhost:50051",
+		UseTLS:              false,
+		InsecureSkipVerify:  false,
+		Timeout:             10 * time.Second,
+		KeepAlive:           true,
+		MaxRetries:          3,
+		KeepAliveTime:       2 * time.Minute,
+		KeepAliveTimeout:    10 * time.Second,
+		PermitWithoutStream: false,
+	}
+}
+
+func New(config *GrpcConfig, sessionRegistry session.Registry) (*Client, error) {
+	if config == nil {
+		config = DefaultConfig()
+	} else {
+		defaults := DefaultConfig()
+		if config.Address == "" {
+			config.Address = defaults.Address
+		}
+		if config.Timeout == 0 {
+			config.Timeout = defaults.Timeout
+		}
+		if config.MaxRetries == 0 {
+			config.MaxRetries = defaults.MaxRetries
+		}
+		if config.KeepAliveTime == 0 {
+			config.KeepAliveTime = defaults.KeepAliveTime
+		}
+		if config.KeepAliveTimeout == 0 {
+			config.KeepAliveTimeout = defaults.KeepAliveTimeout
+		}
+	}
+
+	var opts []grpc.DialOption
+
+	if config.UseTLS {
+		tlsConfig := &tls.Config{
+			InsecureSkipVerify: config.InsecureSkipVerify,
+		}
+		creds := credentials.NewTLS(tlsConfig)
+		opts = append(opts, grpc.WithTransportCredentials(creds))
+	} else {
+		opts = append(opts, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	}
+
+	if config.KeepAlive {
+		kaParams := keepalive.ClientParameters{
+			Time:                config.KeepAliveTime,
+			Timeout:             config.KeepAliveTimeout,
+			PermitWithoutStream: config.PermitWithoutStream,
+		}
+		opts = append(opts, grpc.WithKeepaliveParams(kaParams))
+	}
+
+	opts = append(opts,
+		grpc.WithDefaultCallOptions(
+			grpc.MaxCallRecvMsgSize(4*1024*1024),
+			grpc.MaxCallSendMsgSize(4*1024*1024),
+		),
+	)
+
+	conn, err := grpc.NewClient(config.Address, opts...)
+	if err != nil {
+		return nil, fmt.Errorf("failed to connect to gRPC server at %s: %w", config.Address, err)
+	}
+
+	slugService := proto.NewSlugChangeClient(conn)
+	eventService := proto.NewEventServiceClient(conn)
+	authorizeConnectionService := proto.NewUserServiceClient(conn)
+
+	return &Client{
+		conn:                       conn,
+		config:                     config,
+		slugService:                slugService,
+		sessionRegistry:            sessionRegistry,
+		eventService:               eventService,
+		authorizeConnectionService: authorizeConnectionService,
+	}, nil
+}
+
+func (c *Client) SubscribeEvents(ctx context.Context, identity, authToken string) error {
+	const (
+		baseBackoff = time.Second
+		maxBackoff  = 30 * time.Second
+	)
+
+	backoff := baseBackoff
+	wait := func() error {
+		if backoff <= 0 {
+			return nil
+		}
+		select {
+		case <-time.After(backoff):
+			return nil
+		case <-ctx.Done():
+			return ctx.Err()
+		}
+	}
+	growBackoff := func() {
+		backoff *= 2
+		if backoff > maxBackoff {
+			backoff = maxBackoff
+		}
+	}
+
+	for {
+		subscribe, err := c.eventService.Subscribe(ctx)
+		if err != nil {
+			if !isConnectionError(err) {
+				return err
+			}
+			if status.Code(err) == codes.Unauthenticated {
+				return err
+			}
+			if err := wait(); err != nil {
+				return err
+			}
+			growBackoff()
+			continue
+		}
+
+		err = subscribe.Send(&proto.Node{
+			Type: proto.EventType_AUTHENTICATION,
+			Payload: &proto.Node_AuthEvent{
+				AuthEvent: &proto.Authentication{
+					Identity:  identity,
+					AuthToken: authToken,
+				},
+			},
+		})
+
+		if err != nil {
+			log.Println("Authentication failed to send to gRPC server:", err)
+			if isConnectionError(err) {
+				if err := wait(); err != nil {
+					return err
+				}
+				growBackoff()
+				continue
+			}
+			return err
+		}
+		log.Println("Authentication Successfully sent to gRPC server")
+		backoff = baseBackoff
+
+		if err = c.processEventStream(subscribe); err != nil {
+			if isConnectionError(err) {
+				log.Printf("Reconnect to controller within %v sec", backoff.Seconds())
+				if err := wait(); err != nil {
+					return err
+				}
+				growBackoff()
+				continue
+			}
+			return err
+		}
+	}
+}
+
+func (c *Client) processEventStream(subscribe grpc.BidiStreamingClient[proto.Node, proto.Events]) error {
+	for {
+		recv, err := subscribe.Recv()
+		if err != nil {
+			if isConnectionError(err) {
+				log.Printf("connection error receiving from gRPC server: %v", err)
+				return err
+			}
+			if status.Code(err) == codes.Unauthenticated {
+				log.Printf("Authentication failed: %v", err)
+				return err
+			}
+			log.Printf("non-connection receive error from gRPC server: %v", err)
+			continue
+		}
+		switch recv.GetType() {
+		case proto.EventType_SLUG_CHANGE:
+			oldSlug := recv.GetSlugEvent().GetOld()
+			newSlug := recv.GetSlugEvent().GetNew()
+			sess, err := c.sessionRegistry.Get(oldSlug)
+			if err != nil {
+				errSend := subscribe.Send(&proto.Node{
+					Type: proto.EventType_SLUG_CHANGE_RESPONSE,
+					Payload: &proto.Node_SlugEventResponse{
+						SlugEventResponse: &proto.SlugChangeEventResponse{
+							Success: false,
+							Message: err.Error(),
+						},
+					},
+				})
+				if errSend != nil {
+					if isConnectionError(errSend) {
+						log.Printf("connection error sending slug change failure: %v", errSend)
+						return errSend
+					}
+					log.Printf("non-connection send error for slug change failure: %v", errSend)
+				}
+				continue
+			}
+			err = c.sessionRegistry.Update(oldSlug, newSlug)
+			if err != nil {
+				errSend := subscribe.Send(&proto.Node{
+					Type: proto.EventType_SLUG_CHANGE_RESPONSE,
+					Payload: &proto.Node_SlugEventResponse{
+						SlugEventResponse: &proto.SlugChangeEventResponse{
+							Success: false,
+							Message: err.Error(),
+						},
+					},
+				})
+				if errSend != nil {
+					if isConnectionError(errSend) {
+						log.Printf("connection error sending slug change failure: %v", errSend)
+						return errSend
+					}
+					log.Printf("non-connection send error for slug change failure: %v", errSend)
+				}
+				continue
+			}
+			sess.GetInteraction().Redraw()
+			err = subscribe.Send(&proto.Node{
+				Type: proto.EventType_SLUG_CHANGE_RESPONSE,
+				Payload: &proto.Node_SlugEventResponse{
+					SlugEventResponse: &proto.SlugChangeEventResponse{
+						Success: true,
+						Message: "",
+					},
+				},
+			})
+			if err != nil {
+				if isConnectionError(err) {
+					log.Printf("connection error sending slug change success: %v", err)
+					return err
+				}
+				log.Printf("non-connection send error for slug change success: %v", err)
+				continue
+			}
+		case proto.EventType_GET_SESSIONS:
+			sessions := c.sessionRegistry.GetAllSessionFromUser(recv.GetGetSessionsEvent().GetIdentity())
+			var details []*proto.Detail
+			for _, ses := range sessions {
+				detail := ses.Detail()
+				details = append(details, &proto.Detail{
+					Node:           config.Getenv("domain", "localhost"),
+					ForwardingType: detail.ForwardingType,
+					Slug:           detail.Slug,
+					UserId:         detail.UserID,
+					Active:         detail.Active,
+					StartedAt:      timestamppb.New(detail.StartedAt),
+				})
+			}
+			err = subscribe.Send(&proto.Node{
+				Type: proto.EventType_GET_SESSIONS,
+				Payload: &proto.Node_GetSessionsEvent{
+					GetSessionsEvent: &proto.GetSessionsResponse{
+						Details: details,
+					},
+				},
+			})
+			if err != nil {
+				if isConnectionError(err) {
+					log.Printf("connection error sending sessions success: %v", err)
+					return err
+				}
+				log.Printf("non-connection send error for sessions success: %v", err)
+				continue
+			}
+		default:
+			log.Printf("Unknown event type received: %v", recv.GetType())
+		}
+	}
+}
+
+func (c *Client) GetConnection() *grpc.ClientConn {
+	return c.conn
+}
+
+func (c *Client) AuthorizeConn(ctx context.Context, token string) (authorized bool, user string, err error) {
+	check, err := c.authorizeConnectionService.Check(ctx, &proto.CheckRequest{AuthToken: token})
+	if err != nil {
+		return false, "UNAUTHORIZED", err
+	}
+
+	if check.GetResponse() == proto.AuthorizationResponse_MESSAGE_TYPE_UNAUTHORIZED {
+		return false, "UNAUTHORIZED", nil
+	}
+	return true, check.GetUser(), nil
+}
+
+func (c *Client) Close() error {
+	if c.conn != nil {
+		log.Printf("Closing gRPC connection to %s", c.config.Address)
+		return c.conn.Close()
+	}
+	return nil
+}
+
+func (c *Client) CheckServerHealth(ctx context.Context) error {
+	healthClient := grpc_health_v1.NewHealthClient(c.GetConnection())
+	resp, err := healthClient.Check(ctx, &grpc_health_v1.HealthCheckRequest{
+		Service: "",
+	})
+	if err != nil {
+		return fmt.Errorf("health check failed: %w", err)
+	}
+	if resp.Status != grpc_health_v1.HealthCheckResponse_SERVING {
+		return fmt.Errorf("server not serving: %v", resp.Status)
+	}
+	return nil
+}
+
+func (c *Client) GetConfig() *GrpcConfig {
+	return c.config
+}
+
+func isConnectionError(err error) bool {
+	if err == nil {
+		return false
+	}
+	if errors.Is(err, io.EOF) {
+		return true
+	}
+	switch status.Code(err) {
+	case codes.Unavailable, codes.Canceled, codes.DeadlineExceeded:
+		return true
+	default:
+		return false
+	}
+}
--- a/internal/key/key.go
+++ b/internal/key/key.go
@@ -1,4 +1,4 @@
-package utils
+package key

 import (
 	"crypto/rand"
@@ -6,72 +6,12 @@ import (
 	"crypto/x509"
 	"encoding/pem"
 	"log"
-	mathrand "math/rand"
 	"os"
 	"path/filepath"
-	"strconv"
-	"strings"
-	"sync"
-	"time"

-	"github.com/joho/godotenv"
 	"golang.org/x/crypto/ssh"
 )

-type Env struct {
-	value map[string]string
-	mu    sync.Mutex
-}
-
-var env *Env
-
-func init() {
-	env = &Env{value: map[string]string{}}
-}
-
-func GenerateRandomString(length int) string {
-	const charset = "abcdefghijklmnopqrstuvwxyz"
-	seededRand := mathrand.New(mathrand.NewSource(time.Now().UnixNano() + int64(mathrand.Intn(9999))))
-	var result strings.Builder
-	for i := 0; i < length; i++ {
-		randomIndex := seededRand.Intn(len(charset))
-		result.WriteString(string(charset[randomIndex]))
-	}
-	return result.String()
-}
-
-func Getenv(key, defaultValue string) string {
-	env.mu.Lock()
-	defer env.mu.Unlock()
-	if val, ok := env.value[key]; ok {
-		return val
-	}
-
-	if os.Getenv("HOSTNAME") == "" {
-		err := godotenv.Load(".env")
-		if err != nil {
-			log.Fatalf("Error loading .env file: %s", err)
-		}
-	}
-
-	val := os.Getenv(key)
-	if val == "" {
-		val = defaultValue
-	}
-	env.value[key] = val
-
-	return val
-}
-
-func GetBufferSize() int {
-	sizeStr := Getenv("BUFFER_SIZE", "32768")
-	size, err := strconv.Atoi(sizeStr)
-	if err != nil || size < 4096 || size > 1048576 {
-		return 32768
-	}
-	return size
-}
-
 func GenerateSSHKeyIfNotExist(keyPath string) error {
 	if _, err := os.Stat(keyPath); err == nil {
 		log.Printf("SSH key already exists at %s", keyPath)
--- a/internal/port/port.go
+++ b/internal/port/port.go
@@ -6,39 +6,50 @@ import (
 	"strconv"
 	"strings"
 	"sync"
-	"tunnel_pls/utils"
+	"tunnel_pls/internal/config"
 )

-type PortManager struct {
+type Manager interface {
+	AddPortRange(startPort, endPort uint16) error
+	GetUnassignedPort() (uint16, bool)
+	SetPortStatus(port uint16, assigned bool) error
+	GetPortStatus(port uint16) (bool, bool)
+}
+
+type manager struct {
 	mu          sync.RWMutex
 	ports       map[uint16]bool
 	sortedPorts []uint16
 }

-var Manager = PortManager{
+var Default Manager = &manager{
 	ports:       make(map[uint16]bool),
 	sortedPorts: []uint16{},
 }

 func init() {
-	rawRange := utils.Getenv("ALLOWED_PORTS", "40000-41000")
+	rawRange := config.Getenv("ALLOWED_PORTS", "")
+	if rawRange == "" {
+		return
+	}
+
 	splitRange := strings.Split(rawRange, "-")
 	if len(splitRange) != 2 {
-		Manager.AddPortRange(30000, 31000)
-	} else {
-		start, err := strconv.ParseUint(splitRange[0], 10, 16)
-		if err != nil {
-			start = 30000
-		}
-		end, err := strconv.ParseUint(splitRange[1], 10, 16)
-		if err != nil {
-			end = 31000
-		}
-		Manager.AddPortRange(uint16(start), uint16(end))
+		return
 	}
+
+	start, err := strconv.ParseUint(splitRange[0], 10, 16)
+	if err != nil {
+		return
+	}
+	end, err := strconv.ParseUint(splitRange[1], 10, 16)
+	if err != nil {
+		return
+	}
+	_ = Default.AddPortRange(uint16(start), uint16(end))
 }

-func (pm *PortManager) AddPortRange(startPort, endPort uint16) error {
+func (pm *manager) AddPortRange(startPort, endPort uint16) error {
 	pm.mu.Lock()
 	defer pm.mu.Unlock()

@@ -57,7 +68,7 @@ func (pm *PortManager) AddPortRange(startPort, endPort uint16) error {
 	return nil
 }

-func (pm *PortManager) GetUnassignedPort() (uint16, bool) {
+func (pm *manager) GetUnassignedPort() (uint16, bool) {
 	pm.mu.Lock()
 	defer pm.mu.Unlock()

@@ -70,7 +81,7 @@ func (pm *PortManager) GetUnassignedPort() (uint16, bool) {
 	return 0, false
 }

-func (pm *PortManager) SetPortStatus(port uint16, assigned bool) error {
+func (pm *manager) SetPortStatus(port uint16, assigned bool) error {
 	pm.mu.Lock()
 	defer pm.mu.Unlock()

@@ -78,7 +89,7 @@ func (pm *PortManager) SetPortStatus(port uint16, assigned bool) error {
 	return nil
 }

-func (pm *PortManager) GetPortStatus(port uint16) (bool, bool) {
+func (pm *manager) GetPortStatus(port uint16) (bool, bool) {
 	pm.mu.RLock()
 	defer pm.mu.RUnlock()

--- a/internal/random/random.go
+++ b/internal/random/random.go
@@ -0,0 +1,18 @@
+package random
+
+import (
+	mathrand "math/rand"
+	"strings"
+	"time"
+)
+
+func GenerateRandomString(length int) string {
+	const charset = "abcdefghijklmnopqrstuvwxyz"
+	seededRand := mathrand.New(mathrand.NewSource(time.Now().UnixNano() + int64(mathrand.Intn(9999))))
+	var result strings.Builder
+	for i := 0; i < length; i++ {
+		randomIndex := seededRand.Intn(len(charset))
+		result.WriteString(string(charset[randomIndex]))
+	}
+	return result.String()
+}
--- a/main.go
+++ b/main.go
@@ -1,24 +1,41 @@
 package main

 import (
+	"context"
 	"fmt"
 	"log"
 	"net/http"
 	_ "net/http/pprof"
 	"os"
+	"strings"
+	"time"
+	"tunnel_pls/internal/config"
+	"tunnel_pls/internal/grpc/client"
+	"tunnel_pls/internal/key"
 	"tunnel_pls/server"
-	"tunnel_pls/utils"
+	"tunnel_pls/session"
+	"tunnel_pls/version"

 	"golang.org/x/crypto/ssh"
 )

 func main() {
+	if len(os.Args) > 1 && (os.Args[1] == "--version" || os.Args[1] == "-v") {
+		fmt.Println(version.GetVersion())
+		os.Exit(0)
+	}
+
 	log.SetOutput(os.Stdout)
 	log.SetFlags(log.LstdFlags | log.Lshortfile)

-	pprofEnabled := utils.Getenv("PPROF_ENABLED", "false")
+	log.Printf("Starting %s", version.GetVersion())
+
+	mode := strings.ToLower(config.Getenv("MODE", "standalone"))
+	isNodeMode := mode == "node"
+
+	pprofEnabled := config.Getenv("PPROF_ENABLED", "false")
 	if pprofEnabled == "true" {
-		pprofPort := utils.Getenv("PPROF_PORT", "6060")
+		pprofPort := config.Getenv("PPROF_PORT", "6060")
 		go func() {
 			pprofAddr := fmt.Sprintf("localhost:%s", pprofPort)
 			log.Printf("Starting pprof server on http://%s/debug/pprof/", pprofAddr)
@@ -30,11 +47,11 @@ func main() {

 	sshConfig := &ssh.ServerConfig{
 		NoClientAuth:  true,
-		ServerVersion: "SSH-2.0-TunnlPls-1.0",
+		ServerVersion: fmt.Sprintf("SSH-2.0-TunnlPls-%s", version.GetShortVersion()),
 	}

-	sshKeyPath := utils.Getenv("SSH_PRIVATE_KEY", "certs/id_rsa")
-	if err := utils.GenerateSSHKeyIfNotExist(sshKeyPath); err != nil {
+	sshKeyPath := "certs/ssh/id_rsa"
+	if err := key.GenerateSSHKeyIfNotExist(sshKeyPath); err != nil {
 		log.Fatalf("Failed to generate SSH key: %s", err)
 	}

@@ -49,6 +66,62 @@ func main() {
 	}

 	sshConfig.AddHostKey(private)
-	app := server.NewServer(sshConfig)
+	sessionRegistry := session.NewRegistry()
+
+	var grpcClient *client.Client
+	var cancel context.CancelFunc = func() {}
+	var ctx context.Context = context.Background()
+
+	if isNodeMode {
+		grpcHost := config.Getenv("GRPC_ADDRESS", "localhost")
+		grpcPort := config.Getenv("GRPC_PORT", "8080")
+		grpcAddr := fmt.Sprintf("%s:%s", grpcHost, grpcPort)
+		nodeToken := config.Getenv("NODE_TOKEN", "")
+		if nodeToken == "" {
+			log.Fatalf("NODE_TOKEN is required in node mode")
+			return
+		}
+		
+		grpcClient, err = client.New(&client.GrpcConfig{
+			Address:            grpcAddr,
+			UseTLS:             false,
+			InsecureSkipVerify: false,
+			Timeout:            10 * time.Second,
+			KeepAlive:          true,
+			MaxRetries:         3,
+		}, sessionRegistry)
+		if err != nil {
+			return
+		}
+		defer func(grpcClient *client.Client) {
+			err := grpcClient.Close()
+			if err != nil {
+
+			}
+		}(grpcClient)
+
+		ctx, cancel = context.WithTimeout(context.Background(), time.Second*5)
+		err = grpcClient.CheckServerHealth(ctx)
+		if err != nil {
+			log.Fatalf("gRPC health check failed: %s", err)
+			return
+		}
+		cancel()
+
+		ctx, cancel = context.WithCancel(context.Background())
+		go func() {
+			identity := config.Getenv("DOMAIN", "localhost")
+			err = grpcClient.SubscribeEvents(ctx, identity, nodeToken)
+			if err != nil {
+				return
+			}
+		}()
+	}
+
+	app, err := server.NewServer(sshConfig, sessionRegistry, grpcClient)
+	if err != nil {
+		log.Fatalf("Failed to start server: %s", err)
+	}
 	app.Start()
+	cancel()
 }
--- a/renovate-config.js
+++ b/renovate-config.js
@@ -1,6 +1,6 @@
 module.exports = {
    "endpoint": "https://git.fossy.my.id/api/v1",
-    "gitAuthor": "Renovate Bot <renovate-bot@fossy.my.id>",
+    "gitAuthor": "Renovate-Clanker <renovate-bot@fossy.my.id>",
    "platform": "gitea",
    "onboardingConfigFileName": "renovate.json",
    "autodiscover": true,
--- a/renovate.json
+++ b/renovate.json
@@ -1,11 +1,19 @@
 {
  "extends": [
-    "config:base"
+    "config:recommended"
  ],
  "packageRules": [
    {
-      "updateTypes": ["minor", "patch", "pin", "digest"],
-      "automerge": true
+      "matchUpdateTypes": [
+        "minor",
+        "patch",
+        "pin",
+        "digest"
+      ],
+      "automerge": true,
+      "baseBranchPatterns": [
+        "staging"
+      ]
    }
  ]
-}
+}
--- a/server/handler.go
+++ b/server/handler.go
@@ -1,28 +0,0 @@
-package server
-
-import (
-	"log"
-	"net"
-	"tunnel_pls/session"
-
-	"golang.org/x/crypto/ssh"
-)
-
-func (s *Server) handleConnection(conn net.Conn) {
-	sshConn, chans, forwardingReqs, err := ssh.NewServerConn(conn, s.Config)
-	if err != nil {
-		log.Printf("failed to establish SSH connection: %v", err)
-		err := conn.Close()
-		if err != nil {
-			log.Printf("failed to close SSH connection: %v", err)
-			return
-		}
-		return
-	}
-
-	log.Println("SSH connection established:", sshConn.User())
-
-	session.New(sshConn, forwardingReqs, chans)
-
-	return
-}
--- a/server/header.go
+++ b/server/header.go
@@ -4,7 +4,6 @@ import (
 	"bufio"
 	"bytes"
 	"fmt"
-	"strings"
 )

 type HeaderManager interface {
@@ -14,63 +13,169 @@ type HeaderManager interface {
 	Finalize() []byte
 }

-type ResponseHeaderFactory struct {
+type ResponseHeaderManager interface {
+	Get(key string) string
+	Set(key string, value string)
+	Remove(key string)
+	Finalize() []byte
+}
+
+type RequestHeaderManager interface {
+	Get(key string) string
+	Set(key string, value string)
+	Remove(key string)
+	Finalize() []byte
+	GetMethod() string
+	GetPath() string
+	GetVersion() string
+}
+
+type responseHeaderFactory struct {
 	startLine []byte
 	headers   map[string]string
 }

-type RequestHeaderFactory struct {
-	Method    string
-	Path      string
-	Version   string
+type requestHeaderFactory struct {
+	method    string
+	path      string
+	version   string
 	startLine []byte
 	headers   map[string]string
 }

-func NewRequestHeaderFactory(br *bufio.Reader) (*RequestHeaderFactory, error) {
-	header := &RequestHeaderFactory{
-		headers: make(map[string]string),
+func NewRequestHeaderFactory(r interface{}) (RequestHeaderManager, error) {
+	switch v := r.(type) {
+	case []byte:
+		return parseHeadersFromBytes(v)
+	case *bufio.Reader:
+		return parseHeadersFromReader(v)
+	default:
+		return nil, fmt.Errorf("unsupported type: %T", r)
+	}
+}
+
+func parseHeadersFromBytes(headerData []byte) (RequestHeaderManager, error) {
+	header := &requestHeaderFactory{
+		headers: make(map[string]string, 16),
 	}

-	startLine, err := br.ReadString('\n')
-	if err != nil {
-		return nil, err
+	lineEnd := bytes.IndexByte(headerData, '\n')
+	if lineEnd == -1 {
+		return nil, fmt.Errorf("invalid request: no newline found")
 	}
-	startLine = strings.TrimRight(startLine, "\r\n")
-	header.startLine = []byte(startLine)

-	parts := strings.Split(startLine, " ")
+	startLine := bytes.TrimRight(headerData[:lineEnd], "\r\n")
+	header.startLine = make([]byte, len(startLine))
+	copy(header.startLine, startLine)
+
+	parts := bytes.Split(startLine, []byte{' '})
 	if len(parts) < 3 {
 		return nil, fmt.Errorf("invalid request line")
 	}

-	header.Method = parts[0]
-	header.Path = parts[1]
-	header.Version = parts[2]
+	header.method = string(parts[0])
+	header.path = string(parts[1])
+	header.version = string(parts[2])

-	for {
-		line, err := br.ReadString('\n')
-		if err != nil {
-			return nil, err
+	remaining := headerData[lineEnd+1:]
+
+	for len(remaining) > 0 {
+		lineEnd = bytes.IndexByte(remaining, '\n')
+		if lineEnd == -1 {
+			lineEnd = len(remaining)
 		}
-		line = strings.TrimRight(line, "\r\n")

-		if line == "" {
+		line := bytes.TrimRight(remaining[:lineEnd], "\r\n")
+
+		if len(line) == 0 {
 			break
 		}

-		kv := strings.SplitN(line, ":", 2)
-		if len(kv) != 2 {
-			continue
+		colonIdx := bytes.IndexByte(line, ':')
+		if colonIdx != -1 {
+			key := bytes.TrimSpace(line[:colonIdx])
+			value := bytes.TrimSpace(line[colonIdx+1:])
+			header.headers[string(key)] = string(value)
 		}
-		header.headers[strings.TrimSpace(kv[0])] = strings.TrimSpace(kv[1])
+
+		if lineEnd == len(remaining) {
+			break
+		}
+		remaining = remaining[lineEnd+1:]
 	}

 	return header, nil
 }

-func NewResponseHeaderFactory(startLine []byte) *ResponseHeaderFactory {
-	header := &ResponseHeaderFactory{
+func parseHeadersFromReader(br *bufio.Reader) (RequestHeaderManager, error) {
+	header := &requestHeaderFactory{
+		headers: make(map[string]string, 16),
+	}
+
+	startLineBytes, err := br.ReadSlice('\n')
+	if err != nil {
+		if err == bufio.ErrBufferFull {
+			var startLine string
+			startLine, err = br.ReadString('\n')
+			if err != nil {
+				return nil, err
+			}
+			startLineBytes = []byte(startLine)
+		} else {
+			return nil, err
+		}
+	}
+
+	startLineBytes = bytes.TrimRight(startLineBytes, "\r\n")
+	header.startLine = make([]byte, len(startLineBytes))
+	copy(header.startLine, startLineBytes)
+
+	parts := bytes.Split(startLineBytes, []byte{' '})
+	if len(parts) < 3 {
+		return nil, fmt.Errorf("invalid request line")
+	}
+
+	header.method = string(parts[0])
+	header.path = string(parts[1])
+	header.version = string(parts[2])
+
+	for {
+		lineBytes, err := br.ReadSlice('\n')
+		if err != nil {
+			if err == bufio.ErrBufferFull {
+				var line string
+				line, err = br.ReadString('\n')
+				if err != nil {
+					return nil, err
+				}
+				lineBytes = []byte(line)
+			} else {
+				return nil, err
+			}
+		}
+
+		lineBytes = bytes.TrimRight(lineBytes, "\r\n")
+
+		if len(lineBytes) == 0 {
+			break
+		}
+
+		colonIdx := bytes.IndexByte(lineBytes, ':')
+		if colonIdx == -1 {
+			continue
+		}
+
+		key := bytes.TrimSpace(lineBytes[:colonIdx])
+		value := bytes.TrimSpace(lineBytes[colonIdx+1:])
+
+		header.headers[string(key)] = string(value)
+	}
+
+	return header, nil
+}
+
+func NewResponseHeaderFactory(startLine []byte) ResponseHeaderManager {
+	header := &responseHeaderFactory{
 		startLine: nil,
 		headers:   make(map[string]string),
 	}
@@ -96,19 +201,19 @@ func NewResponseHeaderFactory(startLine []byte) *ResponseHeaderFactory {
 	return header
 }

-func (resp *ResponseHeaderFactory) Get(key string) string {
+func (resp *responseHeaderFactory) Get(key string) string {
 	return resp.headers[key]
 }

-func (resp *ResponseHeaderFactory) Set(key string, value string) {
+func (resp *responseHeaderFactory) Set(key string, value string) {
 	resp.headers[key] = value
 }

-func (resp *ResponseHeaderFactory) Remove(key string) {
+func (resp *responseHeaderFactory) Remove(key string) {
 	delete(resp.headers, key)
 }

-func (resp *ResponseHeaderFactory) Finalize() []byte {
+func (resp *responseHeaderFactory) Finalize() []byte {
 	var buf bytes.Buffer

 	buf.Write(resp.startLine)
@@ -125,7 +230,7 @@ func (resp *ResponseHeaderFactory) Finalize() []byte {
 	return buf.Bytes()
 }

-func (req *RequestHeaderFactory) Get(key string) string {
+func (req *requestHeaderFactory) Get(key string) string {
 	val, ok := req.headers[key]
 	if !ok {
 		return ""
@@ -133,15 +238,27 @@ func (req *RequestHeaderFactory) Get(key string) string {
 	return val
 }

-func (req *RequestHeaderFactory) Set(key string, value string) {
+func (req *requestHeaderFactory) Set(key string, value string) {
 	req.headers[key] = value
 }

-func (req *RequestHeaderFactory) Remove(key string) {
+func (req *requestHeaderFactory) Remove(key string) {
 	delete(req.headers, key)
 }

-func (req *RequestHeaderFactory) Finalize() []byte {
+func (req *requestHeaderFactory) GetMethod() string {
+	return req.method
+}
+
+func (req *requestHeaderFactory) GetPath() string {
+	return req.path
+}
+
+func (req *requestHeaderFactory) GetVersion() string {
+	return req.version
+}
+
+func (req *requestHeaderFactory) Finalize() []byte {
 	var buf bytes.Buffer

 	buf.Write(req.startLine)
--- a/server/http.go
+++ b/server/http.go
@@ -11,34 +11,61 @@ import (
 	"regexp"
 	"strings"
 	"time"
+	"tunnel_pls/internal/config"
 	"tunnel_pls/session"
-	"tunnel_pls/utils"

 	"golang.org/x/crypto/ssh"
 )

-type Interaction interface {
-	SendMessage(message string)
-}
-type CustomWriter struct {
-	RemoteAddr  net.Addr
-	writer      io.Writer
-	reader      io.Reader
-	headerBuf   []byte
-	buf         []byte
-	respHeader  *ResponseHeaderFactory
-	reqHeader   *RequestHeaderFactory
-	interaction Interaction
-	respMW      []ResponseMiddleware
-	reqStartMW  []RequestMiddleware
-	reqEndMW    []RequestMiddleware
+type HTTPWriter interface {
+	io.Reader
+	io.Writer
+	GetRemoteAddr() net.Addr
+	GetWriter() io.Writer
+	AddResponseMiddleware(mw ResponseMiddleware)
+	AddRequestStartMiddleware(mw RequestMiddleware)
+	SetRequestHeader(header RequestHeaderManager)
+	GetRequestStartMiddleware() []RequestMiddleware
 }

-func (cw *CustomWriter) SetInteraction(interaction Interaction) {
-	cw.interaction = interaction
+type customWriter struct {
+	remoteAddr net.Addr
+	writer     io.Writer
+	reader     io.Reader
+	headerBuf  []byte
+	buf        []byte
+	respHeader ResponseHeaderManager
+	reqHeader  RequestHeaderManager
+	respMW     []ResponseMiddleware
+	reqStartMW []RequestMiddleware
+	reqEndMW   []RequestMiddleware
 }

-func (cw *CustomWriter) Read(p []byte) (int, error) {
+func (cw *customWriter) GetRemoteAddr() net.Addr {
+	return cw.remoteAddr
+}
+
+func (cw *customWriter) GetWriter() io.Writer {
+	return cw.writer
+}
+
+func (cw *customWriter) AddResponseMiddleware(mw ResponseMiddleware) {
+	cw.respMW = append(cw.respMW, mw)
+}
+
+func (cw *customWriter) AddRequestStartMiddleware(mw RequestMiddleware) {
+	cw.reqStartMW = append(cw.reqStartMW, mw)
+}
+
+func (cw *customWriter) SetRequestHeader(header RequestHeaderManager) {
+	cw.reqHeader = header
+}
+
+func (cw *customWriter) GetRequestStartMiddleware() []RequestMiddleware {
+	return cw.reqStartMW
+}
+
+func (cw *customWriter) Read(p []byte) (int, error) {
 	tmp := make([]byte, len(p))
 	read, err := cw.reader.Read(tmp)
 	if read == 0 && err != nil {
@@ -72,8 +99,7 @@ func (cw *CustomWriter) Read(p []byte) (int, error) {
 		}
 	}

-	headerReader := bufio.NewReader(bytes.NewReader(header))
-	reqhf, err := NewRequestHeaderFactory(headerReader)
+	reqhf, err := NewRequestHeaderFactory(header)
 	if err != nil {
 		return 0, err
 	}
@@ -95,13 +121,12 @@ func (cw *CustomWriter) Read(p []byte) (int, error) {
 	return n, nil
 }

-func NewCustomWriter(writer io.Writer, reader io.Reader, remoteAddr net.Addr) *CustomWriter {
-	return &CustomWriter{
-		RemoteAddr:  remoteAddr,
-		writer:      writer,
-		reader:      reader,
-		buf:         make([]byte, 0, 4096),
-		interaction: nil,
+func NewCustomWriter(writer io.Writer, reader io.Reader, remoteAddr net.Addr) HTTPWriter {
+	return &customWriter{
+		remoteAddr: remoteAddr,
+		writer:     writer,
+		reader:     reader,
+		buf:        make([]byte, 0, 4096),
 	}
 }

@@ -129,7 +154,7 @@ func isHTTPHeader(buf []byte) bool {
 	return true
 }

-func (cw *CustomWriter) Write(p []byte) (int, error) {
+func (cw *customWriter) Write(p []byte) (int, error) {
 	if cw.respHeader != nil && len(cw.buf) == 0 && len(p) >= 5 && string(p[0:5]) == "HTTP/" {
 		cw.respHeader = nil
 	}
@@ -186,18 +211,29 @@ func (cw *CustomWriter) Write(p []byte) (int, error) {
 	return len(p), nil
 }

-func (cw *CustomWriter) AddInteraction(interaction Interaction) {
-	cw.interaction = interaction
-}
-
 var redirectTLS = false

-func NewHTTPServer() error {
-	listener, err := net.Listen("tcp", ":80")
+type HTTPServer interface {
+	ListenAndServe() error
+	ListenAndServeTLS() error
+	handler(conn net.Conn)
+	handlerTLS(conn net.Conn)
+}
+type httpServer struct {
+	sessionRegistry session.Registry
+}
+
+func NewHTTPServer(sessionRegistry session.Registry) HTTPServer {
+	return &httpServer{sessionRegistry: sessionRegistry}
+}
+
+func (hs *httpServer) ListenAndServe() error {
+	httpPort := config.Getenv("HTTP_PORT", "8080")
+	listener, err := net.Listen("tcp", ":"+httpPort)
 	if err != nil {
 		return errors.New("Error listening: " + err.Error())
 	}
-	if utils.Getenv("TLS_ENABLED", "false") == "true" && utils.Getenv("TLS_REDIRECT", "false") == "true" {
+	if config.Getenv("TLS_ENABLED", "false") == "true" && config.Getenv("TLS_REDIRECT", "false") == "true" {
 		redirectTLS = true
 	}
 	go func() {
@@ -212,13 +248,13 @@ func NewHTTPServer() error {
 				continue
 			}

-			go Handler(conn)
+			go hs.handler(conn)
 		}
 	}()
 	return nil
 }

-func Handler(conn net.Conn) {
+func (hs *httpServer) handler(conn net.Conn) {
 	defer func() {
 		err := conn.Close()
 		if err != nil && !errors.Is(err, net.ErrClosed) {
@@ -249,7 +285,7 @@ func Handler(conn net.Conn) {

 	if redirectTLS {
 		_, err = conn.Write([]byte("HTTP/1.1 301 Moved Permanently\r\n" +
-			fmt.Sprintf("Location: https://%s.%s/\r\n", slug, utils.Getenv("DOMAIN", "localhost")) +
+			fmt.Sprintf("Location: https://%s.%s/\r\n", slug, config.Getenv("DOMAIN", "localhost")) +
 			"Content-Length: 0\r\n" +
 			"Connection: close\r\n" +
 			"\r\n"))
@@ -277,8 +313,8 @@ func Handler(conn net.Conn) {
 		return
 	}

-	sshSession, ok := session.Clients[slug]
-	if !ok {
+	sshSession, err := hs.sessionRegistry.Get(slug)
+	if err != nil {
 		_, err = conn.Write([]byte("HTTP/1.1 301 Moved Permanently\r\n" +
 			fmt.Sprintf("Location: https://tunnl.live/tunnel-not-found?slug=%s\r\n", slug) +
 			"Content-Length: 0\r\n" +
@@ -291,13 +327,12 @@ func Handler(conn net.Conn) {
 		return
 	}
 	cw := NewCustomWriter(conn, dstReader, conn.RemoteAddr())
-	cw.SetInteraction(sshSession.Interaction)
 	forwardRequest(cw, reqhf, sshSession)
 	return
 }

-func forwardRequest(cw *CustomWriter, initialRequest *RequestHeaderFactory, sshSession *session.SSHSession) {
-	payload := sshSession.Forwarder.CreateForwardedTCPIPPayload(cw.RemoteAddr)
+func forwardRequest(cw HTTPWriter, initialRequest RequestHeaderManager, sshSession *session.SSHSession) {
+	payload := sshSession.GetForwarder().CreateForwardedTCPIPPayload(cw.GetRemoteAddr())

 	type channelResult struct {
 		channel ssh.Channel
@@ -307,7 +342,7 @@ func forwardRequest(cw *CustomWriter, initialRequest *RequestHeaderFactory, sshS
 	resultChan := make(chan channelResult, 1)

 	go func() {
-		channel, reqs, err := sshSession.Lifecycle.GetConnection().OpenChannel("forwarded-tcpip", payload)
+		channel, reqs, err := sshSession.GetLifecycle().GetConnection().OpenChannel("forwarded-tcpip", payload)
 		resultChan <- channelResult{channel, reqs, err}
 	}()

@@ -318,29 +353,28 @@ func forwardRequest(cw *CustomWriter, initialRequest *RequestHeaderFactory, sshS
 	case result := <-resultChan:
 		if result.err != nil {
 			log.Printf("Failed to open forwarded-tcpip channel: %v", result.err)
-			sshSession.Forwarder.WriteBadGatewayResponse(cw.writer)
+			sshSession.GetForwarder().WriteBadGatewayResponse(cw.GetWriter())
 			return
 		}
 		channel = result.channel
 		reqs = result.reqs
 	case <-time.After(5 * time.Second):
 		log.Printf("Timeout opening forwarded-tcpip channel")
-		sshSession.Forwarder.WriteBadGatewayResponse(cw.writer)
+		sshSession.GetForwarder().WriteBadGatewayResponse(cw.GetWriter())
 		return
 	}

 	go ssh.DiscardRequests(reqs)

 	fingerprintMiddleware := NewTunnelFingerprint()
-	forwardedForMiddleware := NewForwardedFor(cw.RemoteAddr)
+	forwardedForMiddleware := NewForwardedFor(cw.GetRemoteAddr())

-	cw.respMW = append(cw.respMW, fingerprintMiddleware)
-	cw.reqStartMW = append(cw.reqStartMW, forwardedForMiddleware)
-	cw.reqEndMW = nil
-	cw.reqHeader = initialRequest
+	cw.AddResponseMiddleware(fingerprintMiddleware)
+	cw.AddRequestStartMiddleware(forwardedForMiddleware)
+	cw.SetRequestHeader(initialRequest)

-	for _, m := range cw.reqStartMW {
-		if err := m.HandleRequest(cw.reqHeader); err != nil {
+	for _, m := range cw.GetRequestStartMiddleware() {
+		if err := m.HandleRequest(initialRequest); err != nil {
 			log.Printf("Error handling request: %v", err)
 			return
 		}
@@ -352,6 +386,6 @@ func forwardRequest(cw *CustomWriter, initialRequest *RequestHeaderFactory, sshS
 		return
 	}

-	sshSession.Forwarder.HandleConnection(cw, channel, cw.RemoteAddr)
+	sshSession.GetForwarder().HandleConnection(cw, channel, cw.GetRemoteAddr())
 	return
 }
--- a/server/https.go
+++ b/server/https.go
@@ -8,19 +8,19 @@ import (
 	"log"
 	"net"
 	"strings"
-	"tunnel_pls/session"
-	"tunnel_pls/utils"
+	"tunnel_pls/internal/config"
 )

-func NewHTTPSServer() error {
-	domain := utils.Getenv("DOMAIN", "localhost")
+func (hs *httpServer) ListenAndServeTLS() error {
+	domain := config.Getenv("DOMAIN", "localhost")
+	httpsPort := config.Getenv("HTTPS_PORT", "8443")

 	tlsConfig, err := NewTLSConfig(domain)
 	if err != nil {
 		return fmt.Errorf("failed to initialize TLS config: %w", err)
 	}

-	ln, err := tls.Listen("tcp", ":443", tlsConfig)
+	ln, err := tls.Listen("tcp", ":"+httpsPort, tlsConfig)
 	if err != nil {
 		return err
 	}
@@ -37,13 +37,13 @@ func NewHTTPSServer() error {
 				continue
 			}

-			go HandlerTLS(conn)
+			go hs.handlerTLS(conn)
 		}
 	}()
 	return nil
 }

-func HandlerTLS(conn net.Conn) {
+func (hs *httpServer) handlerTLS(conn net.Conn) {
 	defer func() {
 		err := conn.Close()
 		if err != nil {
@@ -89,8 +89,8 @@ func HandlerTLS(conn net.Conn) {
 		return
 	}

-	sshSession, ok := session.Clients[slug]
-	if !ok {
+	sshSession, err := hs.sessionRegistry.Get(slug)
+	if err != nil {
 		_, err = conn.Write([]byte("HTTP/1.1 301 Moved Permanently\r\n" +
 			fmt.Sprintf("Location: https://tunnl.live/tunnel-not-found?slug=%s\r\n", slug) +
 			"Content-Length: 0\r\n" +
@@ -103,7 +103,6 @@ func HandlerTLS(conn net.Conn) {
 		return
 	}
 	cw := NewCustomWriter(conn, dstReader, conn.RemoteAddr())
-	cw.SetInteraction(sshSession.Interaction)
 	forwardRequest(cw, reqhf, sshSession)
 	return
 }
--- a/server/middleware.go
+++ b/server/middleware.go
@@ -5,11 +5,11 @@ import (
 )

 type RequestMiddleware interface {
-	HandleRequest(header *RequestHeaderFactory) error
+	HandleRequest(header RequestHeaderManager) error
 }

 type ResponseMiddleware interface {
-	HandleResponse(header *ResponseHeaderFactory, body []byte) error
+	HandleResponse(header ResponseHeaderManager, body []byte) error
 }

 type TunnelFingerprint struct{}
@@ -18,16 +18,11 @@ func NewTunnelFingerprint() *TunnelFingerprint {
 	return &TunnelFingerprint{}
 }

-func (h *TunnelFingerprint) HandleResponse(header *ResponseHeaderFactory, body []byte) error {
+func (h *TunnelFingerprint) HandleResponse(header ResponseHeaderManager, body []byte) error {
 	header.Set("Server", "Tunnel Please")
 	return nil
 }

-type RequestLogger struct {
-	interaction Interaction
-	remoteAddr  net.Addr
-}
-
 type ForwardedFor struct {
 	addr net.Addr
 }
@@ -36,7 +31,7 @@ func NewForwardedFor(addr net.Addr) *ForwardedFor {
 	return &ForwardedFor{addr: addr}
 }

-func (ff *ForwardedFor) HandleRequest(header *RequestHeaderFactory) error {
+func (ff *ForwardedFor) HandleRequest(header RequestHeaderManager) error {
 	host, _, err := net.SplitHostPort(ff.addr.String())
 	if err != nil {
 		return err
--- a/server/server.go
+++ b/server/server.go
@@ -1,47 +1,58 @@
 package server

 import (
+	"context"
 	"fmt"
 	"log"
 	"net"
-	"net/http"
-	"tunnel_pls/utils"
+	"tunnel_pls/internal/config"
+	"tunnel_pls/internal/grpc/client"
+	"tunnel_pls/session"

 	"golang.org/x/crypto/ssh"
 )

 type Server struct {
-	Conn       *net.Listener
-	Config     *ssh.ServerConfig
-	HttpServer *http.Server
+	conn            *net.Listener
+	config          *ssh.ServerConfig
+	sessionRegistry session.Registry
+	grpcClient      *client.Client
 }

-func NewServer(config *ssh.ServerConfig) *Server {
-	listener, err := net.Listen("tcp", fmt.Sprintf(":%s", utils.Getenv("PORT", "2200")))
+func NewServer(sshConfig *ssh.ServerConfig, sessionRegistry session.Registry, grpcClient *client.Client) (*Server, error) {
+	listener, err := net.Listen("tcp", fmt.Sprintf(":%s", config.Getenv("PORT", "2200")))
 	if err != nil {
 		log.Fatalf("failed to listen on port 2200: %v", err)
-		return nil
+		return nil, err
 	}
-	if utils.Getenv("TLS_ENABLED", "false") == "true" {
-		err = NewHTTPSServer()
-		if err != nil {
-			log.Fatalf("failed to start https server: %v", err)
-		}
-	}
-	err = NewHTTPServer()
+
+	HttpServer := NewHTTPServer(sessionRegistry)
+	err = HttpServer.ListenAndServe()
 	if err != nil {
 		log.Fatalf("failed to start http server: %v", err)
+		return nil, err
 	}
+
+	if config.Getenv("TLS_ENABLED", "false") == "true" {
+		err = HttpServer.ListenAndServeTLS()
+		if err != nil {
+			log.Fatalf("failed to start https server: %v", err)
+			return nil, err
+		}
+	}
+
 	return &Server{
-		Conn:   &listener,
-		Config: config,
-	}
+		conn:            &listener,
+		config:          sshConfig,
+		sessionRegistry: sessionRegistry,
+		grpcClient:      grpcClient,
+	}, nil
 }

 func (s *Server) Start() {
 	log.Println("SSH server is starting on port 2200...")
 	for {
-		conn, err := (*s.Conn).Accept()
+		conn, err := (*s.conn).Accept()
 		if err != nil {
 			log.Printf("failed to accept connection: %v", err)
 			continue
@@ -50,3 +61,39 @@ func (s *Server) Start() {
 		go s.handleConnection(conn)
 	}
 }
+
+func (s *Server) handleConnection(conn net.Conn) {
+	sshConn, chans, forwardingReqs, err := ssh.NewServerConn(conn, s.config)
+	defer func(sshConn *ssh.ServerConn) {
+		err = sshConn.Close()
+		if err != nil {
+			log.Printf("failed to close SSH server: %v", err)
+		}
+	}(sshConn)
+
+	if err != nil {
+		log.Printf("failed to establish SSH connection: %v", err)
+		err := conn.Close()
+		if err != nil {
+			log.Printf("failed to close SSH connection: %v", err)
+			return
+		}
+		return
+	}
+	ctx := context.Background()
+	log.Println("SSH connection established:", sshConn.User())
+
+	user := "UNAUTHORIZED"
+	if s.grpcClient != nil {
+		_, u, _ := s.grpcClient.AuthorizeConn(ctx, sshConn.User())
+		user = u
+	}
+
+	sshSession := session.New(sshConn, forwardingReqs, chans, s.sessionRegistry, user)
+	err = sshSession.Start()
+	if err != nil {
+		log.Printf("SSH session ended with error: %v", err)
+		return
+	}
+	return
+}
--- a/server/tls.go
+++ b/server/tls.go
@@ -10,13 +10,22 @@ import (
 	"os"
 	"sync"
 	"time"
-	"tunnel_pls/utils"
+	"tunnel_pls/internal/config"

 	"github.com/caddyserver/certmagic"
 	"github.com/libdns/cloudflare"
 )

-type TLSManager struct {
+type TLSManager interface {
+	userCertsExistAndValid() bool
+	loadUserCerts() error
+	startCertWatcher()
+	initCertMagic() error
+	getTLSConfig() *tls.Config
+	getCertificate(hello *tls.ClientHelloInfo) (*tls.Certificate, error)
+}
+
+type tlsManager struct {
 	domain      string
 	certPath    string
 	keyPath     string
@@ -30,18 +39,18 @@ type TLSManager struct {
 	useCertMagic bool
 }

-var tlsManager *TLSManager
+var globalTLSManager TLSManager
 var tlsManagerOnce sync.Once

 func NewTLSConfig(domain string) (*tls.Config, error) {
 	var initErr error

 	tlsManagerOnce.Do(func() {
-		certPath := utils.Getenv("CERT_LOC", "certs/cert.pem")
-		keyPath := utils.Getenv("KEY_LOC", "certs/privkey.pem")
-		storagePath := utils.Getenv("CERT_STORAGE_PATH", "certs/certmagic")
+		certPath := "certs/tls/cert.pem"
+		keyPath := "certs/tls/privkey.pem"
+		storagePath := "certs/tls/certmagic"

-		tm := &TLSManager{
+		tm := &tlsManager{
 			domain:      domain,
 			certPath:    certPath,
 			keyPath:     keyPath,
@@ -72,22 +81,22 @@ func NewTLSConfig(domain string) (*tls.Config, error) {
 			tm.useCertMagic = true
 		}

-		tlsManager = tm
+		globalTLSManager = tm
 	})

 	if initErr != nil {
 		return nil, initErr
 	}

-	return tlsManager.getTLSConfig(), nil
+	return globalTLSManager.getTLSConfig(), nil
 }

 func isACMEConfigComplete() bool {
-	cfAPIToken := utils.Getenv("CF_API_TOKEN", "")
+	cfAPIToken := config.Getenv("CF_API_TOKEN", "")
 	return cfAPIToken != ""
 }

-func (tm *TLSManager) userCertsExistAndValid() bool {
+func (tm *tlsManager) userCertsExistAndValid() bool {
 	if _, err := os.Stat(tm.certPath); os.IsNotExist(err) {
 		log.Printf("Certificate file not found: %s", tm.certPath)
 		return false
@@ -158,7 +167,7 @@ func ValidateCertDomains(certPath, domain string) bool {
 	return hasBase && hasWildcard
 }

-func (tm *TLSManager) loadUserCerts() error {
+func (tm *tlsManager) loadUserCerts() error {
 	cert, err := tls.LoadX509KeyPair(tm.certPath, tm.keyPath)
 	if err != nil {
 		return err
@@ -172,7 +181,7 @@ func (tm *TLSManager) loadUserCerts() error {
 	return nil
 }

-func (tm *TLSManager) startCertWatcher() {
+func (tm *tlsManager) startCertWatcher() {
 	go func() {
 		var lastCertMod, lastKeyMod time.Time

@@ -227,14 +236,14 @@ func (tm *TLSManager) startCertWatcher() {
 	}()
 }

-func (tm *TLSManager) initCertMagic() error {
+func (tm *tlsManager) initCertMagic() error {
 	if err := os.MkdirAll(tm.storagePath, 0700); err != nil {
 		return fmt.Errorf("failed to create cert storage directory: %w", err)
 	}

-	acmeEmail := utils.Getenv("ACME_EMAIL", "admin@"+tm.domain)
-	cfAPIToken := utils.Getenv("CF_API_TOKEN", "")
-	acmeStaging := utils.Getenv("ACME_STAGING", "false") == "true"
+	acmeEmail := config.Getenv("ACME_EMAIL", "admin@"+tm.domain)
+	cfAPIToken := config.Getenv("CF_API_TOKEN", "")
+	acmeStaging := config.Getenv("ACME_STAGING", "false") == "true"

 	if cfAPIToken == "" {
 		return fmt.Errorf("CF_API_TOKEN environment variable is required for automatic certificate generation")
@@ -289,14 +298,29 @@ func (tm *TLSManager) initCertMagic() error {
 	return nil
 }

-func (tm *TLSManager) getTLSConfig() *tls.Config {
+func (tm *tlsManager) getTLSConfig() *tls.Config {
 	return &tls.Config{
 		GetCertificate: tm.getCertificate,
-		MinVersion:     tls.VersionTLS12,
+		MinVersion:     tls.VersionTLS13,
+		MaxVersion:     tls.VersionTLS13,
+
+		SessionTicketsDisabled: false,
+
+		CipherSuites: []uint16{
+			tls.TLS_AES_128_GCM_SHA256,
+			tls.TLS_CHACHA20_POLY1305_SHA256,
+		},
+
+		CurvePreferences: []tls.CurveID{
+			tls.X25519,
+		},
+
+		ClientAuth: tls.NoClientCert,
+		NextProtos: nil,
 	}
 }

-func (tm *TLSManager) getCertificate(hello *tls.ClientHelloInfo) (*tls.Certificate, error) {
+func (tm *tlsManager) getCertificate(hello *tls.ClientHelloInfo) (*tls.Certificate, error) {
 	if tm.useCertMagic {
 		return tm.magic.GetCertificate(hello)
 	}
--- a/session/forwarder/forwarder.go
+++ b/session/forwarder/forwarder.go
@@ -10,16 +10,16 @@ import (
 	"strconv"
 	"sync"
 	"time"
+	"tunnel_pls/internal/config"
 	"tunnel_pls/session/slug"
 	"tunnel_pls/types"
-	"tunnel_pls/utils"

 	"golang.org/x/crypto/ssh"
 )

 var bufferPool = sync.Pool{
 	New: func() interface{} {
-		bufSize := utils.GetBufferSize()
+		bufSize := config.GetBufferSize()
 		return make([]byte, bufSize)
 	},
 }
@@ -31,11 +31,21 @@ func copyWithBuffer(dst io.Writer, src io.Reader) (written int64, err error) {
 }

 type Forwarder struct {
-	Listener      net.Listener
-	TunnelType    types.TunnelType
-	ForwardedPort uint16
-	SlugManager   slug.Manager
-	Lifecycle     Lifecycle
+	listener      net.Listener
+	tunnelType    types.TunnelType
+	forwardedPort uint16
+	slugManager   slug.Manager
+	lifecycle     Lifecycle
+}
+
+func NewForwarder(slugManager slug.Manager) *Forwarder {
+	return &Forwarder{
+		listener:      nil,
+		tunnelType:    "",
+		forwardedPort: 0,
+		slugManager:   slugManager,
+		lifecycle:     nil,
+	}
 }

 type Lifecycle interface {
@@ -58,7 +68,7 @@ type ForwardingController interface {
 }

 func (f *Forwarder) SetLifecycle(lifecycle Lifecycle) {
-	f.Lifecycle = lifecycle
+	f.lifecycle = lifecycle
 }

 func (f *Forwarder) AcceptTCPConnections() {
@@ -90,7 +100,7 @@ func (f *Forwarder) AcceptTCPConnections() {
 		resultChan := make(chan channelResult, 1)

 		go func() {
-			channel, reqs, err := f.Lifecycle.GetConnection().OpenChannel("forwarded-tcpip", payload)
+			channel, reqs, err := f.lifecycle.GetConnection().OpenChannel("forwarded-tcpip", payload)
 			resultChan <- channelResult{channel, reqs, err}
 		}()

@@ -142,49 +152,50 @@ func (f *Forwarder) HandleConnection(dst io.ReadWriter, src ssh.Channel, remoteA

 	log.Printf("Handling new forwarded connection from %s", remoteAddr)

-	done := make(chan struct{}, 2)
-
-	go func() {
-		_, err := copyWithBuffer(src, dst)
-		if err != nil && !errors.Is(err, io.EOF) && !errors.Is(err, net.ErrClosed) {
-			log.Printf("Error copying from conn.Reader to channel: %v", err)
-		}
-		done <- struct{}{}
-	}()
+	var wg sync.WaitGroup
+	wg.Add(2)

 	go func() {
+		defer wg.Done()
 		_, err := copyWithBuffer(dst, src)
 		if err != nil && !errors.Is(err, io.EOF) && !errors.Is(err, net.ErrClosed) {
-			log.Printf("Error copying from channel to conn.Writer: %v", err)
+			log.Printf("Error copying src→dst: %v", err)
 		}
-		done <- struct{}{}
 	}()

-	<-done
+	go func() {
+		defer wg.Done()
+		_, err := copyWithBuffer(src, dst)
+		if err != nil && !errors.Is(err, io.EOF) && !errors.Is(err, net.ErrClosed) {
+			log.Printf("Error copying dst→src: %v", err)
+		}
+	}()
+
+	wg.Wait()
 }

 func (f *Forwarder) SetType(tunnelType types.TunnelType) {
-	f.TunnelType = tunnelType
+	f.tunnelType = tunnelType
 }

 func (f *Forwarder) GetTunnelType() types.TunnelType {
-	return f.TunnelType
+	return f.tunnelType
 }

 func (f *Forwarder) GetForwardedPort() uint16 {
-	return f.ForwardedPort
+	return f.forwardedPort
 }

 func (f *Forwarder) SetForwardedPort(port uint16) {
-	f.ForwardedPort = port
+	f.forwardedPort = port
 }

 func (f *Forwarder) SetListener(listener net.Listener) {
-	f.Listener = listener
+	f.listener = listener
 }

 func (f *Forwarder) GetListener() net.Listener {
-	return f.Listener
+	return f.listener
 }

 func (f *Forwarder) WriteBadGatewayResponse(dst io.Writer) {
@@ -197,7 +208,7 @@ func (f *Forwarder) WriteBadGatewayResponse(dst io.Writer) {

 func (f *Forwarder) Close() error {
 	if f.GetListener() != nil {
-		return f.Listener.Close()
+		return f.listener.Close()
 	}
 	return nil
 }
--- a/session/handler.go
+++ b/session/handler.go
@@ -7,10 +7,9 @@ import (
 	"log"
 	"net"
 	portUtil "tunnel_pls/internal/port"
+	"tunnel_pls/internal/random"
 	"tunnel_pls/types"

-	"tunnel_pls/utils"
-
 	"golang.org/x/crypto/ssh"
 )

@@ -19,7 +18,28 @@ var blockedReservedPorts = []uint16{1080, 1433, 1521, 1900, 2049, 3306, 3389, 54
 func (s *SSHSession) HandleGlobalRequest(GlobalRequest <-chan *ssh.Request) {
 	for req := range GlobalRequest {
 		switch req.Type {
-		case "shell", "pty-req", "window-change":
+		case "shell", "pty-req":
+			err := req.Reply(true, nil)
+			if err != nil {
+				log.Println("Failed to reply to request:", err)
+				return
+			}
+		case "window-change":
+			p := req.Payload
+			if len(p) < 16 {
+				log.Println("invalid window-change payload")
+				err := req.Reply(false, nil)
+				if err != nil {
+					log.Println("Failed to reply to request:", err)
+					return
+				}
+				return
+			}
+			cols := binary.BigEndian.Uint32(p[0:4])
+			rows := binary.BigEndian.Uint32(p[4:8])
+
+			s.interaction.SetWH(int(cols), int(rows))
+
 			err := req.Reply(true, nil)
 			if err != nil {
 				log.Println("Failed to reply to request:", err)
@@ -49,7 +69,7 @@ func (s *SSHSession) HandleTCPIPForward(req *ssh.Request) {
 			log.Println("Failed to reply to request:", err)
 			return
 		}
-		err = s.Lifecycle.Close()
+		err = s.lifecycle.Close()
 		if err != nil {
 			log.Printf("failed to close session: %v", err)
 		}
@@ -59,13 +79,12 @@ func (s *SSHSession) HandleTCPIPForward(req *ssh.Request) {
 	var rawPortToBind uint32
 	if err := binary.Read(reader, binary.BigEndian, &rawPortToBind); err != nil {
 		log.Println("Failed to read port from payload:", err)
-		s.Interaction.SendMessage(fmt.Sprintf("Port %d is already in use or restricted. Please choose a different port. (02) \r\n", rawPortToBind))
 		err := req.Reply(false, nil)
 		if err != nil {
 			log.Println("Failed to reply to request:", err)
 			return
 		}
-		err = s.Lifecycle.Close()
+		err = s.lifecycle.Close()
 		if err != nil {
 			log.Printf("failed to close session: %v", err)
 		}
@@ -73,13 +92,13 @@ func (s *SSHSession) HandleTCPIPForward(req *ssh.Request) {
 	}

 	if rawPortToBind > 65535 {
-		s.Interaction.SendMessage(fmt.Sprintf("Port %d is larger then allowed port of 65535. (02)\r\n", rawPortToBind))
+		log.Printf("Port %d is larger than allowed port of 65535", rawPortToBind)
 		err := req.Reply(false, nil)
 		if err != nil {
 			log.Println("Failed to reply to request:", err)
 			return
 		}
-		err = s.Lifecycle.Close()
+		err = s.lifecycle.Close()
 		if err != nil {
 			log.Printf("failed to close session: %v", err)
 		}
@@ -87,15 +106,14 @@ func (s *SSHSession) HandleTCPIPForward(req *ssh.Request) {
 	}

 	portToBind := uint16(rawPortToBind)
-
 	if isBlockedPort(portToBind) {
-		s.Interaction.SendMessage(fmt.Sprintf("Port %d is already in use or restricted. Please choose a different port. (02)\r\n", portToBind))
+		log.Printf("Port %d is blocked or restricted", portToBind)
 		err := req.Reply(false, nil)
 		if err != nil {
 			log.Println("Failed to reply to request:", err)
 			return
 		}
-		err = s.Lifecycle.Close()
+		err = s.lifecycle.Close()
 		if err != nil {
 			log.Printf("failed to close session: %v", err)
 		}
@@ -105,56 +123,49 @@ func (s *SSHSession) HandleTCPIPForward(req *ssh.Request) {
 	if portToBind == 80 || portToBind == 443 {
 		s.HandleHTTPForward(req, portToBind)
 		return
-	} else {
-		if portToBind == 0 {
-			unassign, success := portUtil.Manager.GetUnassignedPort()
-			portToBind = unassign
-			if !success {
-				s.Interaction.SendMessage("No available port\r\n")
-				err := req.Reply(false, nil)
-				if err != nil {
-					log.Println("Failed to reply to request:", err)
-					return
-				}
-				err = s.Lifecycle.Close()
-				if err != nil {
-					log.Printf("failed to close session: %v", err)
-				}
-				return
-			}
-		} else if isUse, isExist := portUtil.Manager.GetPortStatus(portToBind); isExist && isUse {
-			s.Interaction.SendMessage(fmt.Sprintf("Port %d is already in use or restricted. Please choose a different port. (03)\r\n", portToBind))
+	}
+	if portToBind == 0 {
+		unassign, success := portUtil.Default.GetUnassignedPort()
+		portToBind = unassign
+		if !success {
+			log.Println("No available port")
 			err := req.Reply(false, nil)
 			if err != nil {
 				log.Println("Failed to reply to request:", err)
 				return
 			}
-			err = s.Lifecycle.Close()
+			err = s.lifecycle.Close()
 			if err != nil {
 				log.Printf("failed to close session: %v", err)
 			}
 			return
 		}
-		err := portUtil.Manager.SetPortStatus(portToBind, true)
+	} else if isUse, isExist := portUtil.Default.GetPortStatus(portToBind); isExist && isUse {
+		log.Printf("Port %d is already in use or restricted", portToBind)
+		err := req.Reply(false, nil)
 		if err != nil {
-			log.Println("Failed to set port status:", err)
+			log.Println("Failed to reply to request:", err)
 			return
 		}
+		err = s.lifecycle.Close()
+		if err != nil {
+			log.Printf("failed to close session: %v", err)
+		}
+		return
 	}
+	err = portUtil.Default.SetPortStatus(portToBind, true)
+	if err != nil {
+		log.Println("Failed to set port status:", err)
+		return
+	}
+
 	s.HandleTCPForward(req, addr, portToBind)
 }

 func (s *SSHSession) HandleHTTPForward(req *ssh.Request, portToBind uint16) {
-	slug := generateUniqueSlug()
-	if slug == "" {
-		err := req.Reply(false, nil)
-		if err != nil {
-			log.Println("Failed to reply to request:", err)
-		}
-		return
-	}
+	slug := random.GenerateRandomString(20)

-	if !registerClient(slug, s) {
+	if !s.registry.Register(slug, s) {
 		log.Printf("Failed to register client with slug: %s", slug)
 		err := req.Reply(false, nil)
 		if err != nil {
@@ -167,7 +178,7 @@ func (s *SSHSession) HandleHTTPForward(req *ssh.Request, portToBind uint16) {
 	err := binary.Write(buf, binary.BigEndian, uint32(portToBind))
 	if err != nil {
 		log.Println("Failed to write port to buffer:", err)
-		unregisterClient(slug)
+		s.registry.Remove(slug)
 		err = req.Reply(false, nil)
 		if err != nil {
 			log.Println("Failed to reply to request:", err)
@@ -176,16 +187,10 @@ func (s *SSHSession) HandleHTTPForward(req *ssh.Request, portToBind uint16) {
 	}
 	log.Printf("HTTP forwarding approved on port: %d", portToBind)

-	domain := utils.Getenv("DOMAIN", "localhost")
-	protocol := "http"
-	if utils.Getenv("TLS_ENABLED", "false") == "true" {
-		protocol = "https"
-	}
-
 	err = req.Reply(true, buf.Bytes())
 	if err != nil {
 		log.Println("Failed to reply to request:", err)
-		unregisterClient(slug)
+		s.registry.Remove(slug)
 		err = req.Reply(false, nil)
 		if err != nil {
 			log.Println("Failed to reply to request:", err)
@@ -193,22 +198,19 @@ func (s *SSHSession) HandleHTTPForward(req *ssh.Request, portToBind uint16) {
 		return
 	}

-	s.Forwarder.SetType(types.HTTP)
-	s.Forwarder.SetForwardedPort(portToBind)
-	s.SlugManager.Set(slug)
-	s.Interaction.SendMessage("\033[H\033[2J")
-	s.Interaction.ShowWelcomeMessage()
-	s.Interaction.SendMessage(fmt.Sprintf("Forwarding your traffic to %s://%s.%s\r\n", protocol, slug, domain))
-	s.Lifecycle.SetStatus(types.RUNNING)
-	s.Interaction.HandleUserInput()
+	s.forwarder.SetType(types.HTTP)
+	s.forwarder.SetForwardedPort(portToBind)
+	s.slugManager.Set(slug)
+	s.lifecycle.SetStatus(types.RUNNING)
+	s.interaction.Start()
 }

 func (s *SSHSession) HandleTCPForward(req *ssh.Request, addr string, portToBind uint16) {
 	log.Printf("Requested forwarding on %s:%d", addr, portToBind)
 	listener, err := net.Listen("tcp", fmt.Sprintf("0.0.0.0:%d", portToBind))
 	if err != nil {
-		s.Interaction.SendMessage(fmt.Sprintf("Port %d is already in use or restricted. Please choose a different port.\r\n", portToBind))
-		if setErr := portUtil.Manager.SetPortStatus(portToBind, false); setErr != nil {
+		log.Printf("Port %d is already in use or restricted", portToBind)
+		if setErr := portUtil.Default.SetPortStatus(portToBind, false); setErr != nil {
 			log.Printf("Failed to reset port status: %v", setErr)
 		}
 		err = req.Reply(false, nil)
@@ -216,7 +218,7 @@ func (s *SSHSession) HandleTCPForward(req *ssh.Request, addr string, portToBind
 			log.Println("Failed to reply to request:", err)
 			return
 		}
-		err = s.Lifecycle.Close()
+		err = s.lifecycle.Close()
 		if err != nil {
 			log.Printf("failed to close session: %v", err)
 		}
@@ -227,7 +229,7 @@ func (s *SSHSession) HandleTCPForward(req *ssh.Request, addr string, portToBind
 	err = binary.Write(buf, binary.BigEndian, uint32(portToBind))
 	if err != nil {
 		log.Println("Failed to write port to buffer:", err)
-		if setErr := portUtil.Manager.SetPortStatus(portToBind, false); setErr != nil {
+		if setErr := portUtil.Default.SetPortStatus(portToBind, false); setErr != nil {
 			log.Printf("Failed to reset port status: %v", setErr)
 		}
 		err = listener.Close()
@@ -242,7 +244,7 @@ func (s *SSHSession) HandleTCPForward(req *ssh.Request, addr string, portToBind
 	err = req.Reply(true, buf.Bytes())
 	if err != nil {
 		log.Println("Failed to reply to request:", err)
-		if setErr := portUtil.Manager.SetPortStatus(portToBind, false); setErr != nil {
+		if setErr := portUtil.Default.SetPortStatus(portToBind, false); setErr != nil {
 			log.Printf("Failed to reset port status: %v", setErr)
 		}
 		err = listener.Close()
@@ -253,34 +255,12 @@ func (s *SSHSession) HandleTCPForward(req *ssh.Request, addr string, portToBind
 		return
 	}

-	s.Forwarder.SetType(types.TCP)
-	s.Forwarder.SetListener(listener)
-	s.Forwarder.SetForwardedPort(portToBind)
-	s.Interaction.SendMessage("\033[H\033[2J")
-	s.Interaction.ShowWelcomeMessage()
-	s.Interaction.SendMessage(fmt.Sprintf("Forwarding your traffic to tcp://%s:%d \r\n", utils.Getenv("DOMAIN", "localhost"), s.Forwarder.GetForwardedPort()))
-	s.Lifecycle.SetStatus(types.RUNNING)
-	go s.Forwarder.AcceptTCPConnections()
-	s.Interaction.HandleUserInput()
-}
-
-func generateUniqueSlug() string {
-	maxAttempts := 5
-
-	for i := 0; i < maxAttempts; i++ {
-		slug := utils.GenerateRandomString(20)
-
-		clientsMutex.RLock()
-		_, exists := Clients[slug]
-		clientsMutex.RUnlock()
-
-		if !exists {
-			return slug
-		}
-	}
-
-	log.Println("Failed to generate unique slug after multiple attempts")
-	return ""
+	s.forwarder.SetType(types.TCP)
+	s.forwarder.SetListener(listener)
+	s.forwarder.SetForwardedPort(portToBind)
+	s.lifecycle.SetStatus(types.RUNNING)
+	go s.forwarder.AcceptTCPConnections()
+	s.interaction.Start()
 }

 func readSSHString(reader *bytes.Reader) (string, error) {
--- a/session/interaction/constants.go
+++ b/session/interaction/constants.go
@@ -1,27 +0,0 @@
-package interaction
-
-const (
-	backspaceChar    = 8
-	deleteChar       = 127
-	enterChar        = 13
-	escapeChar       = 27
-	ctrlC            = 3
-	forwardSlash     = '/'
-	minPrintableChar = 32
-	maxPrintableChar = 126
-
-	minSlugLength = 3
-	maxSlugLength = 20
-
-	clearScreen    = "\033[H\033[2J"
-	clearLine      = "\033[K"
-	clearToLineEnd = "\r\033[K"
-	backspaceSeq   = "\b \b"
-
-	minBoxWidth  = 50
-	paddingRight = 4
-)
-
-var forbiddenSlugs = []string{
-	"ping",
-}
--- a/session/interaction/interaction.go
+++ b/session/interaction/interaction.go
--- a/session/lifecycle/lifecycle.go
+++ b/session/lifecycle/lifecycle.go
@@ -4,6 +4,8 @@ import (
 	"errors"
 	"io"
 	"net"
+	"time"
+
 	portUtil "tunnel_pls/internal/port"
 	"tunnel_pls/session/slug"
 	"tunnel_pls/types"
@@ -11,10 +13,6 @@ import (
 	"golang.org/x/crypto/ssh"
 )

-type Interaction interface {
-	SendMessage(string)
-}
-
 type Forwarder interface {
 	Close() error
 	GetTunnelType() types.TunnelType
@@ -22,14 +20,25 @@ type Forwarder interface {
 }

 type Lifecycle struct {
-	Status  types.Status
-	Conn    ssh.Conn
-	Channel ssh.Channel
-
-	Interaction      Interaction
-	Forwarder        Forwarder
-	SlugManager      slug.Manager
+	status           types.Status
+	conn             ssh.Conn
+	channel          ssh.Channel
+	forwarder        Forwarder
+	slugManager      slug.Manager
 	unregisterClient func(slug string)
+	startedAt        time.Time
+}
+
+func NewLifecycle(conn ssh.Conn, forwarder Forwarder, slugManager slug.Manager) *Lifecycle {
+	return &Lifecycle{
+		status:           types.INITIALIZING,
+		conn:             conn,
+		channel:          nil,
+		forwarder:        forwarder,
+		slugManager:      slugManager,
+		unregisterClient: nil,
+		startedAt:        time.Now(),
+	}
 }

 func (l *Lifecycle) SetUnregisterClient(unregisterClient func(slug string)) {
@@ -43,49 +52,54 @@ type SessionLifecycle interface {
 	GetChannel() ssh.Channel
 	SetChannel(channel ssh.Channel)
 	SetUnregisterClient(unregisterClient func(slug string))
+	IsActive() bool
+	StartedAt() time.Time
 }

 func (l *Lifecycle) GetChannel() ssh.Channel {
-	return l.Channel
+	return l.channel
 }

 func (l *Lifecycle) SetChannel(channel ssh.Channel) {
-	l.Channel = channel
+	l.channel = channel
 }
 func (l *Lifecycle) GetConnection() ssh.Conn {
-	return l.Conn
+	return l.conn
 }
 func (l *Lifecycle) SetStatus(status types.Status) {
-	l.Status = status
+	l.status = status
+	if status == types.RUNNING && l.startedAt.IsZero() {
+		l.startedAt = time.Now()
+	}
 }

 func (l *Lifecycle) Close() error {
-	err := l.Forwarder.Close()
+	err := l.forwarder.Close()
 	if err != nil && !errors.Is(err, net.ErrClosed) {
 		return err
 	}

-	if l.Channel != nil {
-		err := l.Channel.Close()
+	if l.channel != nil {
+		err := l.channel.Close()
 		if err != nil && !errors.Is(err, io.EOF) {
 			return err
 		}
 	}

-	if l.Conn != nil {
-		err := l.Conn.Close()
+	if l.conn != nil {
+		err := l.conn.Close()
 		if err != nil && !errors.Is(err, net.ErrClosed) {
 			return err
 		}
 	}

-	clientSlug := l.SlugManager.Get()
+	clientSlug := l.slugManager.Get()
 	if clientSlug != "" {
 		l.unregisterClient(clientSlug)
 	}

-	if l.Forwarder.GetTunnelType() == types.TCP {
-		err := portUtil.Manager.SetPortStatus(l.Forwarder.GetForwardedPort(), false)
+	if l.forwarder.GetTunnelType() == types.TCP {
+		err := portUtil.Default.SetPortStatus(l.forwarder.GetForwardedPort(), false)
 		if err != nil {
 			return err
 		}
@@ -93,3 +107,11 @@ func (l *Lifecycle) Close() error {

 	return nil
 }
+
+func (l *Lifecycle) IsActive() bool {
+	return l.status == types.RUNNING
+}
+
+func (l *Lifecycle) StartedAt() time.Time {
+	return l.startedAt
+}
--- a/session/registry.go
+++ b/session/registry.go
@@ -0,0 +1,290 @@
+package session
+
+import (
+	"fmt"
+	"sync"
+)
+
+type Registry interface {
+	Get(slug string) (session *SSHSession, err error)
+	Update(oldSlug, newSlug string) error
+	Register(slug string, session *SSHSession) (success bool)
+	Remove(slug string)
+	GetAllSessionFromUser(user string) []*SSHSession
+}
+type registry struct {
+	mu        sync.RWMutex
+	byUser    map[string]map[string]*SSHSession
+	slugIndex map[string]string
+}
+
+func NewRegistry() Registry {
+	return &registry{
+		byUser:    make(map[string]map[string]*SSHSession),
+		slugIndex: make(map[string]string),
+	}
+}
+
+func (r *registry) Get(slug string) (session *SSHSession, err error) {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+
+	userID, ok := r.slugIndex[slug]
+	if !ok {
+		return nil, fmt.Errorf("session not found")
+	}
+
+	client, ok := r.byUser[userID][slug]
+	if !ok {
+		return nil, fmt.Errorf("session not found")
+	}
+	return client, nil
+}
+
+func (r *registry) Update(oldSlug, newSlug string) error {
+	if isForbiddenSlug(newSlug) {
+		return fmt.Errorf("this subdomain is reserved. Please choose a different one")
+	} else if !isValidSlug(newSlug) {
+		return fmt.Errorf("invalid subdomain. Follow the rules")
+	}
+
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	userID, ok := r.slugIndex[oldSlug]
+	if !ok {
+		return fmt.Errorf("session not found")
+	}
+
+	if _, exists := r.slugIndex[newSlug]; exists && newSlug != oldSlug {
+		return fmt.Errorf("someone already uses this subdomain")
+	}
+
+	client, ok := r.byUser[userID][oldSlug]
+	if !ok {
+		return fmt.Errorf("session not found")
+	}
+
+	delete(r.byUser[userID], oldSlug)
+	delete(r.slugIndex, oldSlug)
+
+	client.slugManager.Set(newSlug)
+	r.slugIndex[newSlug] = userID
+
+	if r.byUser[userID] == nil {
+		r.byUser[userID] = make(map[string]*SSHSession)
+	}
+	r.byUser[userID][newSlug] = client
+	return nil
+}
+
+func (r *registry) Register(slug string, session *SSHSession) (success bool) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	if _, exists := r.slugIndex[slug]; exists {
+		return false
+	}
+
+	userID := session.userID
+	if r.byUser[userID] == nil {
+		r.byUser[userID] = make(map[string]*SSHSession)
+	}
+
+	r.byUser[userID][slug] = session
+	r.slugIndex[slug] = userID
+	return true
+}
+
+func (r *registry) GetAllSessionFromUser(user string) []*SSHSession {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+
+	m := r.byUser[user]
+	if len(m) == 0 {
+		return []*SSHSession{}
+	}
+
+	sessions := make([]*SSHSession, 0, len(m))
+	for _, s := range m {
+		sessions = append(sessions, s)
+	}
+	return sessions
+}
+
+func (r *registry) Remove(slug string) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	userID, ok := r.slugIndex[slug]
+	if !ok {
+		return
+	}
+
+	delete(r.byUser[userID], slug)
+	if len(r.byUser[userID]) == 0 {
+		delete(r.byUser, userID)
+	}
+	delete(r.slugIndex, slug)
+}
+
+func isValidSlug(slug string) bool {
+	if len(slug) < minSlugLength || len(slug) > maxSlugLength {
+		return false
+	}
+
+	if slug[0] == '-' || slug[len(slug)-1] == '-' {
+		return false
+	}
+
+	for _, c := range slug {
+		if !isValidSlugChar(byte(c)) {
+			return false
+		}
+	}
+
+	return true
+}
+
+func isValidSlugChar(c byte) bool {
+	return (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') || c == '-'
+}
+
+func isForbiddenSlug(slug string) bool {
+	_, ok := forbiddenSlugs[slug]
+	return ok
+}
+
+var forbiddenSlugs = map[string]struct{}{
+	"ping":          {},
+	"staging":       {},
+	"admin":         {},
+	"root":          {},
+	"api":           {},
+	"www":           {},
+	"support":       {},
+	"help":          {},
+	"status":        {},
+	"health":        {},
+	"login":         {},
+	"logout":        {},
+	"signup":        {},
+	"register":      {},
+	"settings":      {},
+	"config":        {},
+	"null":          {},
+	"undefined":     {},
+	"example":       {},
+	"test":          {},
+	"dev":           {},
+	"system":        {},
+	"administrator": {},
+	"dashboard":     {},
+	"account":       {},
+	"profile":       {},
+	"user":          {},
+	"users":         {},
+	"auth":          {},
+	"oauth":         {},
+	"callback":      {},
+	"webhook":       {},
+	"webhooks":      {},
+	"static":        {},
+	"assets":        {},
+	"cdn":           {},
+	"mail":          {},
+	"email":         {},
+	"ftp":           {},
+	"ssh":           {},
+	"git":           {},
+	"svn":           {},
+	"blog":          {},
+	"news":          {},
+	"about":         {},
+	"contact":       {},
+	"terms":         {},
+	"privacy":       {},
+	"legal":         {},
+	"billing":       {},
+	"payment":       {},
+	"checkout":      {},
+	"cart":          {},
+	"shop":          {},
+	"store":         {},
+	"download":      {},
+	"uploads":       {},
+	"images":        {},
+	"img":           {},
+	"css":           {},
+	"js":            {},
+	"fonts":         {},
+	"public":        {},
+	"private":       {},
+	"internal":      {},
+	"external":      {},
+	"proxy":         {},
+	"cache":         {},
+	"debug":         {},
+	"metrics":       {},
+	"monitoring":    {},
+	"graphql":       {},
+	"rest":          {},
+	"rpc":           {},
+	"socket":        {},
+	"ws":            {},
+	"wss":           {},
+	"app":           {},
+	"apps":          {},
+	"mobile":        {},
+	"desktop":       {},
+	"embed":         {},
+	"widget":        {},
+	"docs":          {},
+	"documentation": {},
+	"wiki":          {},
+	"forum":         {},
+	"community":     {},
+	"feedback":      {},
+	"report":        {},
+	"abuse":         {},
+	"spam":          {},
+	"security":      {},
+	"verify":        {},
+	"confirm":       {},
+	"reset":         {},
+	"password":      {},
+	"recovery":      {},
+	"unsubscribe":   {},
+	"subscribe":     {},
+	"notifications": {},
+	"alerts":        {},
+	"messages":      {},
+	"inbox":         {},
+	"outbox":        {},
+	"sent":          {},
+	"draft":         {},
+	"trash":         {},
+	"archive":       {},
+	"search":        {},
+	"explore":       {},
+	"discover":      {},
+	"trending":      {},
+	"popular":       {},
+	"featured":      {},
+	"new":           {},
+	"latest":        {},
+	"top":           {},
+	"best":          {},
+	"hot":           {},
+	"random":        {},
+	"all":           {},
+	"any":           {},
+	"none":          {},
+	"true":          {},
+	"false":         {},
+}
+
+var (
+	minSlugLength = 3
+	maxSlugLength = 20
+)
--- a/session/session.go
+++ b/session/session.go
@@ -1,25 +1,18 @@
 package session

 import (
-	"bytes"
 	"fmt"
 	"log"
-	"sync"
 	"time"
+	"tunnel_pls/internal/config"
 	"tunnel_pls/session/forwarder"
 	"tunnel_pls/session/interaction"
 	"tunnel_pls/session/lifecycle"
 	"tunnel_pls/session/slug"
-	"tunnel_pls/utils"

 	"golang.org/x/crypto/ssh"
 )

-var (
-	clientsMutex sync.RWMutex
-	Clients      = make(map[string]*SSHSession)
-)
-
 type Session interface {
 	HandleGlobalRequest(ch <-chan *ssh.Request)
 	HandleTCPIPForward(req *ssh.Request)
@@ -28,80 +21,109 @@ type Session interface {
 }

 type SSHSession struct {
-	Lifecycle   lifecycle.SessionLifecycle
-	Interaction interaction.Controller
-	Forwarder   forwarder.ForwardingController
-	SlugManager slug.Manager
+	initialReq    <-chan *ssh.Request
+	sshReqChannel <-chan ssh.NewChannel
+	lifecycle     lifecycle.SessionLifecycle
+	interaction   interaction.Controller
+	forwarder     forwarder.ForwardingController
+	slugManager   slug.Manager
+	registry      Registry
+	userID        string
 }

-func New(conn *ssh.ServerConn, forwardingReq <-chan *ssh.Request, sshChan <-chan ssh.NewChannel) {
+func (s *SSHSession) GetLifecycle() lifecycle.SessionLifecycle {
+	return s.lifecycle
+}
+
+func (s *SSHSession) GetInteraction() interaction.Controller {
+	return s.interaction
+}
+
+func (s *SSHSession) GetForwarder() forwarder.ForwardingController {
+	return s.forwarder
+}
+
+func (s *SSHSession) GetSlugManager() slug.Manager {
+	return s.slugManager
+}
+
+func New(conn *ssh.ServerConn, forwardingReq <-chan *ssh.Request, sshChan <-chan ssh.NewChannel, sessionRegistry Registry, userID string) *SSHSession {
 	slugManager := slug.NewManager()
-	forwarderManager := &forwarder.Forwarder{
-		Listener:      nil,
-		TunnelType:    "",
-		ForwardedPort: 0,
-		SlugManager:   slugManager,
-	}
-	interactionManager := &interaction.Interaction{
-		CommandBuffer:   bytes.NewBuffer(make([]byte, 0, 20)),
-		InteractiveMode: false,
-		EditSlug:        "",
-		SlugManager:     slugManager,
-		Forwarder:       forwarderManager,
-		Lifecycle:       nil,
-	}
-	lifecycleManager := &lifecycle.Lifecycle{
-		Status:      "",
-		Conn:        conn,
-		Channel:     nil,
-		Interaction: interactionManager,
-		Forwarder:   forwarderManager,
-		SlugManager: slugManager,
-	}
+	forwarderManager := forwarder.NewForwarder(slugManager)
+	interactionManager := interaction.NewInteraction(slugManager, forwarderManager)
+	lifecycleManager := lifecycle.NewLifecycle(conn, forwarderManager, slugManager)

 	interactionManager.SetLifecycle(lifecycleManager)
-	interactionManager.SetSlugModificator(updateClientSlug)
+	interactionManager.SetSlugModificator(sessionRegistry.Update)
 	forwarderManager.SetLifecycle(lifecycleManager)
-	lifecycleManager.SetUnregisterClient(unregisterClient)
+	lifecycleManager.SetUnregisterClient(sessionRegistry.Remove)

-	session := &SSHSession{
-		Lifecycle:   lifecycleManager,
-		Interaction: interactionManager,
-		Forwarder:   forwarderManager,
-		SlugManager: slugManager,
-	}
-
-	var once sync.Once
-	for channel := range sshChan {
-		ch, reqs, err := channel.Accept()
-		if err != nil {
-			log.Printf("failed to accept channel: %v", err)
-			continue
-		}
-		once.Do(func() {
-			session.Lifecycle.SetChannel(ch)
-			session.Interaction.SetChannel(ch)
-
-			tcpipReq := session.waitForTCPIPForward(forwardingReq)
-			if tcpipReq == nil {
-				session.Interaction.SendMessage(fmt.Sprintf("Port forwarding request not received.\r\nEnsure you ran the correct command with -R flag.\r\nExample: ssh %s -p %s -R 80:localhost:3000\r\nFor more details, visit https://tunnl.live.\r\n\r\n", utils.Getenv("DOMAIN", "localhost"), utils.Getenv("PORT", "2200")))
-				if err := session.Lifecycle.Close(); err != nil {
-					log.Printf("failed to close session: %v", err)
-				}
-				return
-			}
-			session.HandleTCPIPForward(tcpipReq)
-		})
-		go session.HandleGlobalRequest(reqs)
-	}
-	if err := session.Lifecycle.Close(); err != nil {
-		log.Printf("failed to close session: %v", err)
+	return &SSHSession{
+		initialReq:    forwardingReq,
+		sshReqChannel: sshChan,
+		lifecycle:     lifecycleManager,
+		interaction:   interactionManager,
+		forwarder:     forwarderManager,
+		slugManager:   slugManager,
+		registry:      sessionRegistry,
+		userID:        userID,
 	}
 }

-func (s *SSHSession) waitForTCPIPForward(forwardingReq <-chan *ssh.Request) *ssh.Request {
+type Detail struct {
+	ForwardingType string    `json:"forwarding_type,omitempty"`
+	Slug           string    `json:"slug,omitempty"`
+	UserID         string    `json:"user_id,omitempty"`
+	Active         bool      `json:"active,omitempty"`
+	StartedAt      time.Time `json:"started_at,omitempty"`
+}
+
+func (s *SSHSession) Detail() Detail {
+	return Detail{
+		ForwardingType: string(s.forwarder.GetTunnelType()),
+		Slug:           s.slugManager.Get(),
+		UserID:         s.userID,
+		Active:         s.lifecycle.IsActive(),
+		StartedAt:      s.lifecycle.StartedAt(),
+	}
+}
+
+func (s *SSHSession) Start() error {
+	channel := <-s.sshReqChannel
+	ch, reqs, err := channel.Accept()
+	if err != nil {
+		log.Printf("failed to accept channel: %v", err)
+		return err
+	}
+	go s.HandleGlobalRequest(reqs)
+
+	tcpipReq := s.waitForTCPIPForward()
+	if tcpipReq == nil {
+		_, err := ch.Write([]byte(fmt.Sprintf("Port forwarding request not received. Ensure you ran the correct command with -R flag. Example: ssh %s -p %s -R 80:localhost:3000", config.Getenv("DOMAIN", "localhost"), config.Getenv("PORT", "2200"))))
+		if err != nil {
+			return err
+		}
+		if err := s.lifecycle.Close(); err != nil {
+			log.Printf("failed to close session: %v", err)
+		}
+		return fmt.Errorf("no forwarding Request")
+	}
+
+	s.lifecycle.SetChannel(ch)
+	s.interaction.SetChannel(ch)
+
+	s.HandleTCPIPForward(tcpipReq)
+
+	if err := s.lifecycle.Close(); err != nil {
+		log.Printf("failed to close session: %v", err)
+		return err
+	}
+	return nil
+}
+
+func (s *SSHSession) waitForTCPIPForward() *ssh.Request {
 	select {
-	case req, ok := <-forwardingReq:
+	case req, ok := <-s.initialReq:
 		if !ok {
 			log.Println("Forwarding request channel closed")
 			return nil
@@ -119,41 +141,3 @@ func (s *SSHSession) waitForTCPIPForward(forwardingReq <-chan *ssh.Request) *ssh
 		return nil
 	}
 }
-
-func updateClientSlug(oldSlug, newSlug string) bool {
-	clientsMutex.Lock()
-	defer clientsMutex.Unlock()
-
-	if _, exists := Clients[newSlug]; exists && newSlug != oldSlug {
-		return false
-	}
-
-	client, ok := Clients[oldSlug]
-	if !ok {
-		return false
-	}
-
-	delete(Clients, oldSlug)
-	client.SlugManager.Set(newSlug)
-	Clients[newSlug] = client
-	return true
-}
-
-func registerClient(slug string, session *SSHSession) bool {
-	clientsMutex.Lock()
-	defer clientsMutex.Unlock()
-
-	if _, exists := Clients[slug]; exists {
-		return false
-	}
-
-	Clients[slug] = session
-	return true
-}
-
-func unregisterClient(slug string) {
-	clientsMutex.Lock()
-	defer clientsMutex.Unlock()
-
-	delete(Clients, slug)
-}
--- a/session/slug/slug.go
+++ b/session/slug/slug.go
@@ -1,32 +1,24 @@
 package slug

-import "sync"
-
 type Manager interface {
 	Get() string
 	Set(slug string)
 }

 type manager struct {
-	slug   string
-	slugMu sync.RWMutex
+	slug string
 }

 func NewManager() Manager {
 	return &manager{
-		slug:   "",
-		slugMu: sync.RWMutex{},
+		slug: "",
 	}
 }

 func (s *manager) Get() string {
-	s.slugMu.RLock()
-	defer s.slugMu.RUnlock()
 	return s.slug
 }

 func (s *manager) Set(slug string) {
-	s.slugMu.Lock()
 	s.slug = slug
-	s.slugMu.Unlock()
 }
--- a/types/types.go
+++ b/types/types.go
@@ -15,12 +15,6 @@ const (
 	TCP  TunnelType = "TCP"
 )

-type InteractionType string
-
-const (
-	Slug InteractionType = "SLUG"
-)
-
 var BadGatewayResponse = []byte("HTTP/1.1 502 Bad Gateway\r\n" +
 	"Content-Length: 11\r\n" +
 	"Content-Type: text/plain\r\n\r\n" +
--- a/version/version.go
+++ b/version/version.go
@@ -0,0 +1,17 @@
+package version
+
+import "fmt"
+
+var (
+	Version   = "dev"
+	BuildDate = "unknown"
+	Commit    = "unknown"
+)
+
+func GetVersion() string {
+	return fmt.Sprintf("tunnel_pls %s (commit: %s, built: %s)", Version, Commit, BuildDate)
+}
+
+func GetShortVersion() string {
+	return Version
+}
Author	SHA1	Message	Date
bagas	5b603d8317	feat: implement sessions request from grpc server All checks were successful Docker Build and Push / build-and-push-branches (push) Has been skipped Details Docker Build and Push / build-and-push-tags (push) Successful in 4m7s Details	2026-01-03 21:17:01 +07:00
bagas	8fd9f8b567	feat: implement sessions request from grpc server Some checks failed Docker Build and Push / build-and-push-branches (push) Has been skipped Details Docker Build and Push / build-and-push-tags (push) Has been cancelled Details	2026-01-03 20:06:14 +07:00
bagas	30e84ac3b7	feat: implement get sessions by user	2026-01-02 22:58:54 +07:00
bagas	fd6ffc2500	feat(grpc): integrate slug edit handling	2026-01-02 18:27:48 +07:00
bagas	e1cd4ed981	WIP: gRPC integration, initial implementation	2026-01-01 21:03:17 +07:00
bagas	96d2b88f95	WIP: gRPC integration, initial implementation	2026-01-01 21:01:15 +07:00
bagas	2e8767f17a	chore: upgrade TLS configuration to TLS 1.3 All checks were successful renovate / renovate (push) Successful in 1m34s Details Docker Build and Push / build-and-push-tags (push) Has been skipped Details Docker Build and Push / build-and-push-branches (push) Successful in 2m49s Details	2026-01-01 00:57:48 +07:00
bagas	7716eb7f29	perf: optimize header parsing with zero-copy ReadSlice All checks were successful renovate / renovate (push) Successful in 35s Details Docker Build and Push / build-and-push-branches (push) Successful in 4m39s Details Docker Build and Push / build-and-push-tags (push) Successful in 4m52s Details - Replace ReadString with ReadSlice to eliminate allocations - Use bytes operations instead of strings - Add FromBytes variant for in-memory parsing	2025-12-31 23:18:53 +07:00
bagas	b115369913	fix: wait for both goroutines before cleanup in HandleConnection All checks were successful renovate / renovate (push) Successful in 1m42s Details Docker Build and Push / build-and-push-branches (push) Successful in 4m46s Details Docker Build and Push / build-and-push-tags (push) Successful in 4m51s Details Only waited for one of two copy goroutines, leaking the second. Now waits for both to complete before closing connections. Fixes file descriptor leak causing 'too many open files' under load. Fixes: #56	2025-12-31 22:22:51 +07:00
bagas	9276430fae	refactor(session): add registry to manage SSH sessions All checks were successful renovate / renovate (push) Successful in 36s Details Docker Build and Push / build-and-push-branches (push) Successful in 4m41s Details Docker Build and Push / build-and-push-tags (push) Successful in 4m38s Details - Implement thread-safe session registry with sync.RWMutex - Add Registry interface for session management operations - Support Get, Register, Update, and Remove session operations - Enable dynamic slug updates for existing sessions - Fix Connection closed by remote because HandleTCPIPForward run on a goroutine	2025-12-31 18:33:47 +07:00
bagas	f8a6f0bafe	refactor(session): add registry to manage SSH sessions All checks were successful renovate / renovate (push) Successful in 39s Details Docker Build and Push / build-and-push-branches (push) Successful in 4m27s Details Docker Build and Push / build-and-push-tags (push) Successful in 4m22s Details - Implement thread-safe session registry with sync.RWMutex - Add Registry interface for session management operations - Support Get, Register, Update, and Remove session operations - Enable dynamic slug updates for existing sessions	2025-12-31 17:47:35 +07:00
bagas	acd02aadd3	refactor: restructure project architecture All checks were successful renovate / renovate (push) Successful in 45s Details Docker Build and Push / build-and-push-branches (push) Successful in 5m54s Details Docker Build and Push / build-and-push-tags (push) Successful in 6m21s Details	2025-12-31 15:49:37 +07:00
bagas	878664e0ac	update: multi version build All checks were successful renovate / renovate (push) Successful in 35s Details Docker Build and Push / build-and-push-branches (push) Successful in 6m7s Details Docker Build and Push / build-and-push-tags (push) Successful in 6m6s Details	2025-12-31 13:48:36 +07:00
bagas	20a88df330	update: multi version build All checks were successful Docker Build and Push / build-and-push-tags (push) Has been skipped Details renovate / renovate (push) Successful in 38s Details Docker Build and Push / build-and-push-branches (push) Successful in 4m45s Details	2025-12-31 13:32:16 +07:00
bagas	075dd7ecad	feat: add versioning system Some checks failed renovate / renovate (push) Successful in 38s Details Docker Build and Push / build-and-push-branches (push) Has been skipped Details Docker Build and Push / build-and-push-tags (push) Has been cancelled Details	2025-12-31 12:31:31 +07:00
bagas	ab34b34765	fix: prevent subdomain change to already-in-use subdomains All checks were successful renovate / renovate (push) Successful in 35s Details Docker Build and Push / build-and-push (push) Successful in 5m42s Details	2025-12-30 19:41:33 +07:00
bagas	514c4f9de1	Merge branch 'staging' of https://git.fossy.my.id/bagas/tunnel-please into staging All checks were successful renovate / renovate (push) Successful in 20s Details Docker Build and Push / build-and-push (push) Successful in 3m35s Details	2025-12-30 00:09:36 +07:00
bagas	d8330c684f	feat: make SSH interaction UI fully responsive	2025-12-30 00:09:18 +07:00
bagas	fbf182025b	Merge pull request 'main' (#52 ) from main into staging All checks were successful renovate / renovate (push) Successful in 21s Details Reviewed-on: #52	2025-12-29 14:58:10 +00:00
bagas	1038c0861e	Merge pull request 'chore(config): migrate Renovate config' (#51 ) from renovate/migrate-config into main Reviewed-on: #51	2025-12-29 14:57:45 +00:00
Renovate-Clanker	64e0d5805e	chore(config): migrate config renovate.json	2025-12-29 14:57:09 +00:00
bagas	85f21e7698	feat(tui): update interaction layer to Bubble Tea TUI All checks were successful renovate / renovate (push) Successful in 27s Details Docker Build and Push / build-and-push (push) Successful in 3m49s Details	2025-12-29 21:55:39 +07:00
bagas	08565d845f	Merge pull request 'staging' (#50 ) from staging into main All checks were successful Docker Build and Push / build-and-push (push) Successful in 3m26s Details Reviewed-on: #50	2025-12-29 10:17:00 +00:00
bagas	a7d9b2ab8a	update: renovate target pr to staging branch All checks were successful renovate / renovate (push) Successful in 20s Details	2025-12-29 17:15:42 +07:00
bagas	bc8c5127a6	Merge pull request 'main' (#49 ) from main into staging All checks were successful renovate / renovate (push) Successful in 23s Details Docker Build and Push / build-and-push (push) Successful in 3m26s Details Reviewed-on: #49	2025-12-29 10:14:30 +00:00
bagas	a49b53e56f	Merge pull request 'chore(deps): update actions/checkout action to v6' (#48 ) from renovate/actions-checkout-6.x into main All checks were successful Docker Build and Push / build-and-push (push) Successful in 1m23s Details Reviewed-on: #48	2025-12-29 10:04:10 +00:00
Renovate Bot	e5b5cc3ae5	chore(deps): update actions/checkout action to v6	2025-12-29 10:03:19 +00:00
bagas	b0b00764cf	Update .gitea/workflows/renovate.yml All checks were successful renovate / renovate (push) Successful in 23s Details	2025-12-29 10:02:56 +00:00
bagas	8b6cdef2e9	Merge pull request 'chore(config): migrate Renovate config' (#47 ) from renovate/migrate-config into main All checks were successful Docker Build and Push / build-and-push (push) Successful in 1m25s Details Reviewed-on: #47	2025-12-29 09:49:10 +00:00
Renovate Bot	653517f5be	chore(config): migrate config renovate.json	2025-12-29 09:48:12 +00:00
bagas	f11a92fb3b	ci: configure workflow to ignore non-Go file changes All checks were successful Docker Build and Push / build-and-push (push) Successful in 3m30s Details renovate / renovate (push) Successful in 22s Details	2025-12-29 15:58:24 +07:00
bagas	ac283626d3	docs: add Docker deployment section	2025-12-29 15:57:31 +07:00
bagas	ad7c5985b1	feat: add docker compose deployment configurations	2025-12-29 15:57:16 +07:00
bagas	2644b4521c	refactor: improve encapsulation All checks were successful renovate / renovate (push) Successful in 20s Details Docker Build and Push / build-and-push (push) Successful in 3m25s Details	2025-12-29 12:37:03 +07:00
bagas	d23ed27a4a	Merge pull request 'staging' (#46 ) from staging into main All checks were successful Docker Build and Push / build-and-push (push) Successful in 1m21s Details renovate / renovate (push) Successful in 21s Details Reviewed-on: #46	2025-12-28 13:19:25 +00:00
bagas	b5862bd7a0	feat: add configurable HTTP port All checks were successful renovate / renovate (push) Successful in 20s Details Docker Build and Push / build-and-push (push) Successful in 1m45s Details	2025-12-28 20:09:31 +07:00
bagas	bf7f7bd8da	feat: add configurable HTTPS port All checks were successful renovate / renovate (push) Successful in 19s Details Docker Build and Push / build-and-push (push) Successful in 1m24s Details	2025-12-28 20:03:49 +07:00
bagas	c3a469be64	refactor: use relative paths for certificates instead of absolute paths All checks were successful renovate / renovate (push) Successful in 19s Details Docker Build and Push / build-and-push (push) Successful in 1m32s Details	2025-12-28 19:53:03 +07:00
bagas	eee04daf80	feat: optimize Docker build for production All checks were successful renovate / renovate (push) Successful in 19s Details Docker Build and Push / build-and-push (push) Successful in 1m30s Details	2025-12-28 19:29:32 +07:00
bagas	1d918ef2aa	feat(port): disable TCP forwarding by default and refactor port manager All checks were successful renovate / renovate (push) Successful in 28s Details Docker Build and Push / build-and-push (push) Successful in 5m27s Details	2025-12-28 19:03:26 +07:00
bagas	a2676a4f30	Merge branch 'staging' of https://git.fossy.my.id/bagas/tunnel-please into staging All checks were successful Docker Build and Push / build-and-push (push) Successful in 3m36s Details renovate / renovate (push) Successful in 20s Details	2025-12-28 18:45:46 +07:00
bagas	83657d3206	refactor: remove unnecessary caching of environment data	2025-12-28 18:45:22 +07:00
bagas	6710aec4bf	Merge pull request 'main' (#45 ) from main into staging All checks were successful Docker Build and Push / build-and-push (push) Successful in 3m33s Details renovate / renovate (push) Successful in 19s Details Reviewed-on: #45	2025-12-28 08:08:58 +00:00
bagas	0ca6285ef5	Update .gitea/workflows/renovate.yml All checks were successful Docker Build and Push / build-and-push (push) Successful in 3m32s Details	2025-12-28 08:08:10 +00:00