From dedd4420afa5cd2c1daf495ef3bfd18ce19affba Mon Sep 17 00:00:00 2001
From: magine <magine233@gmail.com>
Date: Wed, 1 May 2024 15:14:40 +0800
Subject: [PATCH] feat: initial commit

---
 .github/workflows/build_then_release.yml |  132 +
 .github/workflows/check_and_test.yml     |   46 +
 .gitignore                               |    1 +
 .pre-commit-config.yaml                  |   66 +
 Cargo.lock                               | 3517 ++++++++++++++++++++++
 Cargo.toml                               |   36 +
 LICENSE                                  |  176 ++
 README.md                                |   29 +
 buf.yaml                                 |    5 +
 build.rs                                 |    7 +
 cliff.toml                               |   95 +
 deny.toml                                |  208 ++
 proto/command_v1.proto                   |   26 +
 proto/tunnel_v1.proto                    |   15 +
 rustfmt.toml                             |   13 +
 src/command.rs                           |   54 +
 src/error.rs                             |  107 +
 src/lib.rs                               |  400 +++
 src/main.rs                              |  194 ++
 src/server.rs                            |   73 +
 src/tunnel.rs                            |  315 ++
 src/types.rs                             |   24 +
 taplo.toml                               |   36 +
 23 files changed, 5575 insertions(+)
 create mode 100644 .github/workflows/build_then_release.yml
 create mode 100644 .github/workflows/check_and_test.yml
 create mode 100644 .gitignore
 create mode 100644 .pre-commit-config.yaml
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 LICENSE
 create mode 100644 README.md
 create mode 100644 buf.yaml
 create mode 100644 build.rs
 create mode 100644 cliff.toml
 create mode 100644 deny.toml
 create mode 100644 proto/command_v1.proto
 create mode 100644 proto/tunnel_v1.proto
 create mode 100644 rustfmt.toml
 create mode 100644 src/command.rs
 create mode 100644 src/error.rs
 create mode 100644 src/lib.rs
 create mode 100644 src/main.rs
 create mode 100644 src/server.rs
 create mode 100644 src/tunnel.rs
 create mode 100644 src/types.rs
 create mode 100644 taplo.toml

diff --git a/.github/workflows/build_then_release.yml b/.github/workflows/build_then_release.yml
new file mode 100644
index 0000000..c46f7ab
--- /dev/null
+++ b/.github/workflows/build_then_release.yml
@@ -0,0 +1,132 @@
+name: Build then release
+
+on:
+  push:
+    tags:
+      - "v*"
+    branches:
+      - "master"
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  gen_version:
+    name: Generate version
+    runs-on: ubuntu-latest
+    outputs:
+      version: ${{ steps.generated-tag.outputs.tag }}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Get latest tag
+        id: get-latest-tag
+        run: |
+          echo "tag=`gh release list -L 1 | cut -f 1`" >> $GITHUB_OUTPUT
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Bump version
+        id: generated-tag
+        uses: actions/github-script@v6
+        with:
+          script: |
+            if (context.ref.startsWith("refs/tags/")) {
+              let tag = context.ref.replace("refs/tags/", "");
+              core.setOutput('tag', tag);
+              console.log(`This event pushed a tag ${tag}, return directly.`)
+              return
+            }
+            console.log('Use default tag "prerelease".')
+            core.setOutput('tag', 'prerelease');
+
+  build:
+    needs: gen_version
+    name: Build
+    runs-on: ${{ matrix.runner }}
+    strategy:
+      matrix:
+        include:
+          - target: x86_64-apple-darwin
+            runner: macos-latest
+            build_env: {}
+          - target: aarch64-apple-darwin
+            runner: macos-latest
+            build_env: {}
+          - target: x86_64-unknown-linux-musl
+            runner: ubuntu-latest
+            build_env: {}
+          - target: aarch64-unknown-linux-musl
+            runner: ubuntu-latest
+            build_env:
+              CARGO_TARGET_AARCH64_UNKNOWN_LINUX_MUSL_RUSTFLAGS: "-Clink-self-contained=yes -Clinker=rust-lld"
+              CC_aarch64_unknown_linux_musl: clang
+              AR_aarch64_unknown_linux_musl: llvm-ar
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Setup protoc
+        uses: arduino/setup-protoc@v3.0.0
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Install musl-tools
+        if: matrix.runner == 'ubuntu-latest'
+        run: sudo apt update && sudo apt install -y musl-tools
+      - name: Install cross build deps for aarch64-unknown-linux-musl
+        if: matrix.target == 'aarch64-unknown-linux-musl'
+        run: sudo apt update && sudo apt install -y clang llvm gcc-aarch64-linux-gnu
+      - name: Add target
+        run: rustup target add ${{ matrix.target }}
+      - name: Setup rust toolchain
+        run: rustup show
+      - uses: Swatinem/rust-cache@v2
+        with:
+          shared-key: build-then-release-${{ matrix.target }}-v1
+      - name: Build
+        env: ${{ matrix.build_env }}
+        run: |
+          cargo build --release --target ${{ matrix.target }}
+      - name: Compress
+        run: |
+          zip -j pproxy-${{ needs.gen_version.outputs.version }}-${{ matrix.target }}.zip ./target/${{ matrix.target }}/release/pproxy
+      - uses: actions/upload-artifact@v4
+        name: Upload artifacts
+        with:
+          name: pproxy-${{ needs.gen_version.outputs.version }}-${{ matrix.target }}
+          path: pproxy-${{ needs.gen_version.outputs.version }}-${{ matrix.target }}.zip
+          retention-days: 1
+
+  release:
+    needs: [gen_version, build]
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Generate changelog
+        uses: orhun/git-cliff-action@v3
+        id: git-cliff
+        with:
+          config: cliff.toml
+          args: "-vv --strip header ${{ needs.gen_version.outputs.version == 'prerelease' && '--unreleased' || '--latest' }}"
+      - uses: actions/download-artifact@v4
+      - name: Display fetched artifacts
+        run: ls -R
+      - uses: softprops/action-gh-release@v2.0.6
+        name: Emit a Github Release
+        with:
+          token: "${{ secrets.GITHUB_TOKEN }}"
+          body: "${{ steps.git-cliff.outputs.content }}"
+          tag_name: ${{ needs.gen_version.outputs.version }}
+          prerelease: ${{ needs.gen_version.outputs.version == 'prerelease' }}
+          title: ${{ needs.gen_version.outputs.version }}
+          files: |
+            LICENSE
+            pproxy-${{ needs.gen_version.outputs.version }}-x86_64-apple-darwin/*.zip
+            pproxy-${{ needs.gen_version.outputs.version }}-aarch64-apple-darwin/*.zip
+            pproxy-${{ needs.gen_version.outputs.version }}-x86_64-unknown-linux-musl/*.zip
+            pproxy-${{ needs.gen_version.outputs.version }}-aarch64-unknown-linux-musl/*.zip
diff --git a/.github/workflows/check_and_test.yml b/.github/workflows/check_and_test.yml
new file mode 100644
index 0000000..26275c3
--- /dev/null
+++ b/.github/workflows/check_and_test.yml
@@ -0,0 +1,46 @@
+name: Check and test
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  test:
+    name: Check and test
+    strategy:
+      matrix:
+        platform: [ubuntu-latest]
+    runs-on: ${{ matrix.platform }}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Setup protoc
+        uses: arduino/setup-protoc@v3.0.0
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Setup rust toolchain
+        run: |
+          rustup install nightly
+          rustup component add rustfmt --toolchain nightly
+          rustup show
+      - name: Install nextest
+        uses: taiki-e/install-action@nextest
+      - uses: Swatinem/rust-cache@v2
+        with:
+          shared-key: check-and-test-${{ matrix.platform }}-v1
+      - name: Check code format
+        run: cargo +nightly fmt -- --check
+      - name: Check the package for errors
+        run: cargo check --all
+      - name: Lint rust sources
+        run: cargo clippy --all-targets --all-features --tests --benches -- -D warnings
+      - name: Execute rust tests
+        run: cargo nextest run --all-features
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..1486d56
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,66 @@
+fail_fast: false
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.6.0
+    hooks:
+      - id: check-case-conflict
+      - id: check-merge-conflict
+      - id: check-symlinks
+      - id: check-yaml
+      - id: end-of-file-fixer
+      - id: fix-byte-order-marker
+      - id: mixed-line-ending
+      - id: trailing-whitespace
+  - repo: local
+    hooks:
+      - id: buf-format
+        name: protobuf format
+        description: Format protobuf files with buf.
+        entry: bash -c 'buf format --write'
+        language: system
+        files: \.proto$
+      - id: buf-lint
+        name: protobuf lint
+        description: Lint protobuf files for errors.
+        entry: bash -c 'buf lint'
+        language: system
+        files: \.proto$
+      - id: taplo
+        name: taplo format
+        description: Format Cargo.toml files with taplo.
+        entry: bash -c 'taplo format --check'
+        language: rust
+        files: Cargo.toml$
+      - id: cargo-fmt
+        name: cargo fmt
+        description: Format files with rustfmt.
+        entry: bash -c 'cargo +nightly fmt -- --check'
+        language: rust
+        files: \.rs$
+      - id: cargo-deny
+        name: cargo deny check
+        description: Check cargo dependencies
+        entry: bash -c 'cargo deny check -d'
+        language: rust
+        files: \.rs$
+      - id: typos
+        name: typos
+        description: check typo
+        entry: bash -c 'typos'
+        language: rust
+        files: \.*$
+        pass_filenames: false
+      - id: cargo-check
+        name: cargo check
+        description: Check the package for errors.
+        entry: bash -c 'cargo check --all'
+        language: rust
+        files: \.rs$
+        pass_filenames: false
+      - id: cargo-clippy
+        name: cargo clippy
+        description: Lint rust sources
+        entry: bash -c 'cargo clippy --all-targets --all-features --tests --benches -- -D warnings'
+        language: rust
+        files: \.rs$
+        pass_filenames: false
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..18567ab
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,3517 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
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+version = "0.21.0"
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+ "gimli",
+]
+
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+[[package]]
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+[[package]]
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+
+[[package]]
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+
+[[package]]
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+dependencies = [
+ "cfg-if",
+ "windows-sys 0.48.0",
+]
+
+[[package]]
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+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c7e468321c81fb07fa7f4c636c3972b9100f0346e5b6a9f2bd0603a52f7ed277"
+dependencies = [
+ "curve25519-dalek",
+ "rand_core",
+ "serde",
+ "zeroize",
+]
+
+[[package]]
+name = "x509-parser"
+version = "0.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fcbc162f30700d6f3f82a24bf7cc62ffe7caea42c0b2cba8bf7f3ae50cf51f69"
+dependencies = [
+ "asn1-rs",
+ "data-encoding",
+ "der-parser",
+ "lazy_static",
+ "nom",
+ "oid-registry",
+ "rusticata-macros",
+ "thiserror",
+ "time",
+]
+
+[[package]]
+name = "yasna"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e17bb3549cc1321ae1296b9cdc2698e2b6cb1992adfa19a8c72e5b7a738f44cd"
+dependencies = [
+ "time",
+]
+
+[[package]]
+name = "zeroize"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ced3678a2879b30306d323f4542626697a464a97c0a07c9aebf7ebca65cd4dde"
+dependencies = [
+ "zeroize_derive",
+]
+
+[[package]]
+name = "zeroize_derive"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce36e65b0d2999d2aafac989fb249189a141aee1f53c612c1f37d72631959f69"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.60",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..7210680
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,36 @@
+[package]
+name = "dephy-pproxy"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+base64 = "0.22.1"
+clap = "4.5.4"
+futures = "0.3.30"
+futures-util = "0.3.30"
+hex = "0.4.3"
+http = "1.1.0"
+http-body = "1.0.0"
+http-body-util = "0.1.1"
+httparse = "1.8.0"
+hyper = { version = "1.3.1", features = ["server", "http1"] }
+hyper-util = { version = "0.1.5", features = ["tokio"] }
+litep2p = { git = "https://github.com/Ma233/litep2p.git", rev = "144d81c" }
+# Do not upgrade multiaddr, see: https://github.com/paritytech/litep2p/pull/91
+multiaddr = "0.17.1"
+percent-encoding = "2.3.1"
+prost = "0.12.6"
+thiserror = "1.0.60"
+tokio = { version = "1.37.0", features = ["rt-multi-thread"] }
+tokio-util = "0.7.11"
+tonic = "0.11.0"
+tonic-web = "0.11.0"
+tracing = "0.1.40"
+tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }
+
+[build-dependencies]
+tonic-build = "0.11.0"
+
+[[bin]]
+name = "pproxy"
+path = "src/main.rs"
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..d9a10c0
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,176 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+      Work and such Derivative Works in Source or Object form.
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+   3. Grant of Patent License. Subject to the terms and conditions of
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+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
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+      where such license applies only to those patent claims licensable
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+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
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+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..8ae3011
--- /dev/null
+++ b/README.md
@@ -0,0 +1,29 @@
+# dephy-pproxy
+
+dephy-pproxy is a http proxy over litep2p.
+
+## Usage
+Run the server pproxy:
+```shell
+cargo run -- serve --server-addr 127.0.0.1:6666 --commander-server-addr 127.0.0.1:7777 --proxy-addr 127.0.0.1:8000
+```
+
+Provide a simple http server for testing:
+```shell
+python3 -m http.server 8000
+```
+
+Run the client pproxy:
+```shell
+cargo run -- serve
+```
+
+Create a tunnel server on client:
+```shell
+cargo run -- create_tunnel_server --tunnel-server-addr 127.0.0.1:8080 --peer-multiaddr <The litep2p multiaddr>
+```
+
+Access server via the gateway address:
+```shell
+curl 127.0.0.1:8080
+```
diff --git a/buf.yaml b/buf.yaml
new file mode 100644
index 0000000..5997ce7
--- /dev/null
+++ b/buf.yaml
@@ -0,0 +1,5 @@
+version: v1
+lint:
+  except:
+    - PACKAGE_DIRECTORY_MATCH
+    - DIRECTORY_SAME_PACKAGE
diff --git a/build.rs b/build.rs
new file mode 100644
index 0000000..20cb68b
--- /dev/null
+++ b/build.rs
@@ -0,0 +1,7 @@
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let protos = ["proto/command_v1.proto", "proto/tunnel_v1.proto"];
+    tonic_build::configure()
+        .protoc_arg("--experimental_allow_proto3_optional")
+        .compile(&protos, &["proto"])?;
+    Ok(())
+}
diff --git a/cliff.toml b/cliff.toml
new file mode 100644
index 0000000..7341df0
--- /dev/null
+++ b/cliff.toml
@@ -0,0 +1,95 @@
+# git-cliff ~ configuration file
+# https://git-cliff.org/docs/configuration
+
+[changelog]
+# changelog header
+header = """
+# Changelog\n
+All notable changes to this project will be documented in this file. See [conventional commits](https://www.conventionalcommits.org/) for commit guidelines.\n
+"""
+# template for the changelog body
+# https://keats.github.io/tera/docs/#introduction
+body = """
+---
+{% if version %}\
+    {% if previous.version %}\
+        ## [{{ version | trim_start_matches(pat="v") }}]($REPO/compare/{{ previous.version }}..{{ version }}) - {{ timestamp | date(format="%Y-%m-%d") }}
+    {% else %}\
+        ## [{{ version | trim_start_matches(pat="v") }}] - {{ timestamp | date(format="%Y-%m-%d") }}
+    {% endif %}\
+{% else %}\
+    ## [unreleased]
+{% endif %}\
+{% for group, commits in commits | group_by(attribute="group") %}
+    ### {{ group | striptags | trim | upper_first }}
+    {% for commit in commits
+    | filter(attribute="scope")
+    | sort(attribute="scope") %}
+        - **({{commit.scope}})**{% if commit.breaking %} [**breaking**]{% endif %} \
+            {{ commit.message|trim }} - ([{{ commit.id | truncate(length=7, end="") }}]($REPO/commit/{{ commit.id }})) - {{ commit.author.name }}
+    {%- endfor -%}
+    {% raw %}\n{% endraw %}\
+    {%- for commit in commits %}
+        {%- if commit.scope -%}
+        {% else -%}
+            - {% if commit.breaking %} [**breaking**]{% endif %}\
+                {{ commit.message|trim }} - ([{{ commit.id | truncate(length=7, end="") }}]($REPO/commit/{{ commit.id }})) - {{ commit.author.name }}
+        {% endif -%}
+    {% endfor -%}
+{% endfor %}\n
+"""
+# template for the changelog footer
+footer = """
+<!-- generated by git-cliff -->
+"""
+# remove the leading and trailing whitespace from the templates
+trim = true
+# postprocessors
+postprocessors = [
+    { pattern = '\$REPO', replace = "https://github.com/dephy-io/dephy-pproxy" }, # replace repository URL
+]
+
+[git]
+# parse the commits based on https://www.conventionalcommits.org
+conventional_commits = true
+# filter out the commits that are not conventional
+filter_unconventional = false
+# process each line of a commit as an individual commit
+split_commits = false
+# regex for preprocessing the commit messages
+commit_preprocessors = [
+    # { pattern = '\((\w+\s)?#([0-9]+)\)', replace = "([#${2}](https://github.com/orhun/git-cliff/issues/${2}))"}, # replace issue numbers
+]
+# regex for parsing and grouping commits
+commit_parsers = [
+    { message = "\\[skip", skip = true },
+    { message = "\\p{Han}", skip = true },
+    { message = "^feat", group = "Features" },
+    { message = "^fix", group = "Bug Fixes" },
+    { message = "^doc", group = "Documentation" },
+    { message = "^perf", group = "Performance" },
+    { message = "^refactor", group = "Refactoring" },
+    { message = "^style", group = "Style" },
+    { message = "^revert", group = "Revert" },
+    { message = "^test", group = "Tests" },
+    { message = "^chore\\(version\\):", skip = true },
+    { message = "^chore", group = "Miscellaneous Chores" },
+    { message = ".*", group = "Other" },
+    { body = ".*security", group = "Security" },
+]
+# protect breaking changes from being skipped due to matching a skipping commit_parser
+protect_breaking_commits = false
+# filter out the commits that are not matched by commit parsers
+filter_commits = false
+# regex for matching git tags
+tag_pattern = "v[0-9].*"
+# regex for skipping tags
+skip_tags = "v0.1.0-beta.1"
+# regex for ignoring tags
+ignore_tags = ""
+# sort the tags topologically
+topo_order = false
+# sort the commits inside sections by oldest/newest order
+sort_commits = "oldest"
+# limit the number of commits included in the changelog.
+# limit_commits = 42
diff --git a/deny.toml b/deny.toml
new file mode 100644
index 0000000..ba7d5ad
--- /dev/null
+++ b/deny.toml
@@ -0,0 +1,208 @@
+# This template contains all of the possible sections and their default values
+
+# Note that all fields that take a lint level have these possible values:
+# * deny - An error will be produced and the check will fail
+# * warn - A warning will be produced, but the check will not fail
+# * allow - No warning or error will be produced, though in some cases a note
+# will be
+
+# The values provided in this template are the default values that will be used
+# when any section or field is not specified in your own configuration
+
+# If 1 or more target triples (and optionally, target_features) are specified,
+# only the specified targets will be checked when running `cargo deny check`.
+# This means, if a particular package is only ever used as a target specific
+# dependency, such as, for example, the `nix` crate only being used via the
+# `target_family = "unix"` configuration, that only having windows targets in
+# this list would mean the nix crate, as well as any of its exclusive
+# dependencies not shared by any other crates, would be ignored, as the target
+# list here is effectively saying which targets you are building for.
+targets = [
+  # The triple can be any string, but only the target triples built in to
+  # rustc (as of 1.40) can be checked against actual config expressions
+  #{ triple = "x86_64-unknown-linux-musl" },
+  # You can also specify which target_features you promise are enabled for a
+  # particular target. target_features are currently not validated against
+  # the actual valid features supported by the target architecture.
+  #{ triple = "wasm32-unknown-unknown", features = ["atomics"] },
+]
+
+# This section is considered when running `cargo deny check advisories`
+# More documentation for the advisories section can be found here:
+# https://embarkstudios.github.io/cargo-deny/checks/advisories/cfg.html
+[advisories]
+# The path where the advisory database is cloned/fetched into
+db-path = "~/.cargo/advisory-db"
+# The url(s) of the advisory databases to use
+db-urls = ["https://github.com/rustsec/advisory-db"]
+# The lint level for security vulnerabilities
+vulnerability = "deny"
+# The lint level for unmaintained crates
+unmaintained = "warn"
+# The lint level for crates that have been yanked from their source registry
+yanked = "warn"
+# The lint level for crates with security notices. Note that as of
+# 2019-12-17 there are no security notice advisories in
+# https://github.com/rustsec/advisory-db
+notice = "warn"
+# A list of advisory IDs to ignore. Note that ignored advisories will still
+# output a note when they are encountered.
+ignore = [
+  #"RUSTSEC-0000-0000",
+]
+# Threshold for security vulnerabilities, any vulnerability with a CVSS score
+# lower than the range specified will be ignored. Note that ignored advisories
+# will still output a note when they are encountered.
+# * None - CVSS Score 0.0
+# * Low - CVSS Score 0.1 - 3.9
+# * Medium - CVSS Score 4.0 - 6.9
+# * High - CVSS Score 7.0 - 8.9
+# * Critical - CVSS Score 9.0 - 10.0
+#severity-threshold =
+
+# This section is considered when running `cargo deny check licenses`
+# More documentation for the licenses section can be found here:
+# https://embarkstudios.github.io/cargo-deny/checks/licenses/cfg.html
+[licenses]
+# The lint level for crates which do not have a detectable license
+unlicensed = "allow"
+# List of explicitly allowed licenses
+# See https://spdx.org/licenses/ for list of possible licenses
+# [possible values: any SPDX 3.7 short identifier (+ optional exception)].
+allow = [
+  "MIT",
+  "Apache-2.0",
+  "Unicode-DFS-2016",
+  "MPL-2.0",
+  "BSD-2-Clause",
+  "BSD-3-Clause",
+  "ISC",
+  "CC0-1.0",
+]
+# List of explicitly disallowed licenses
+# See https://spdx.org/licenses/ for list of possible licenses
+# [possible values: any SPDX 3.7 short identifier (+ optional exception)].
+deny = [
+  #"Nokia",
+]
+# Lint level for licenses considered copyleft
+copyleft = "warn"
+# Blanket approval or denial for OSI-approved or FSF Free/Libre licenses
+# * both - The license will be approved if it is both OSI-approved *AND* FSF
+# * either - The license will be approved if it is either OSI-approved *OR* FSF
+# * osi-only - The license will be approved if is OSI-approved *AND NOT* FSF
+# * fsf-only - The license will be approved if is FSF *AND NOT* OSI-approved
+# * neither - This predicate is ignored and the default lint level is used
+allow-osi-fsf-free = "neither"
+# Lint level used when no other predicates are matched
+# 1. License isn't in the allow or deny lists
+# 2. License isn't copyleft
+# 3. License isn't OSI/FSF, or allow-osi-fsf-free = "neither"
+default = "deny"
+# The confidence threshold for detecting a license from license text.
+# The higher the value, the more closely the license text must be to the
+# canonical license text of a valid SPDX license file.
+# [possible values: any between 0.0 and 1.0].
+confidence-threshold = 0.8
+# Allow 1 or more licenses on a per-crate basis, so that particular licenses
+# aren't accepted for every possible crate as with the normal allow list
+exceptions = [
+  # Each entry is the crate and version constraint, and its specific allow
+  # list
+  #{ allow = ["Zlib"], name = "adler32", version = "*" },
+]
+
+# Some crates don't have (easily) machine readable licensing information,
+# adding a clarification entry for it allows you to manually specify the
+# licensing information
+#[[licenses.clarify]]
+# The name of the crate the clarification applies to
+#name = "ring"
+# The optional version constraint for the crate
+#version = "*"
+# The SPDX expression for the license requirements of the crate
+#expression = "MIT AND ISC AND OpenSSL"
+# One or more files in the crate's source used as the "source of truth" for
+# the license expression. If the contents match, the clarification will be used
+# when running the license check, otherwise the clarification will be ignored
+# and the crate will be checked normally, which may produce warnings or errors
+# depending on the rest of your configuration
+#license-files = [
+# Each entry is a crate relative path, and the (opaque) hash of its contents
+#{ path = "LICENSE", hash = 0xbd0eed23 }
+#]
+
+[licenses.private]
+# If true, ignores workspace crates that aren't published, or are only
+# published to private registries
+ignore = false
+# One or more private registries that you might publish crates to, if a crate
+# is only published to private registries, and ignore is true, the crate will
+# not have its license(s) checked
+registries = [
+  #"https://sekretz.com/registry
+]
+
+# This section is considered when running `cargo deny check bans`.
+# More documentation about the 'bans' section can be found here:
+# https://embarkstudios.github.io/cargo-deny/checks/bans/cfg.html
+[bans]
+# Lint level for when multiple versions of the same crate are detected
+multiple-versions = "warn"
+# Lint level for when a crate version requirement is `*`
+wildcards = "allow"
+# The graph highlighting used when creating dotgraphs for crates
+# with multiple versions
+# * lowest-version - The path to the lowest versioned duplicate is highlighted
+# * simplest-path - The path to the version with the fewest edges is highlighted
+# * all - Both lowest-version and simplest-path are used
+highlight = "all"
+# List of crates that are allowed. Use with care!
+allow = [
+  #{ name = "ansi_term", version = "=0.11.0" },
+]
+# List of crates to deny
+deny = [
+  # Each entry the name of a crate and a version range. If version is
+  # not specified, all versions will be matched.
+  #{ name = "ansi_term", version = "=0.11.0" },
+  #
+  # Wrapper crates can optionally be specified to allow the crate when it
+  # is a direct dependency of the otherwise banned crate
+  #{ name = "ansi_term", version = "=0.11.0", wrappers = [] },
+]
+# Certain crates/versions that will be skipped when doing duplicate detection.
+skip = [
+  #{ name = "ansi_term", version = "=0.11.0" },
+]
+# Similarly to `skip` allows you to skip certain crates during duplicate
+# detection. Unlike skip, it also includes the entire tree of transitive
+# dependencies starting at the specified crate, up to a certain depth, which is
+# by default infinite
+skip-tree = [
+  #{ name = "ansi_term", version = "=0.11.0", depth = 20 },
+]
+
+# This section is considered when running `cargo deny check sources`.
+# More documentation about the 'sources' section can be found here:
+# https://embarkstudios.github.io/cargo-deny/checks/sources/cfg.html
+[sources]
+# Lint level for what to happen when a crate from a crate registry that is not
+# in the allow list is encountered
+unknown-registry = "warn"
+# Lint level for what to happen when a crate from a git repository that is not
+# in the allow list is encountered
+unknown-git = "warn"
+# List of URLs for allowed crate registries. Defaults to the crates.io index
+# if not specified. If it is specified but empty, no registries are allowed.
+allow-registry = ["https://github.com/rust-lang/crates.io-index"]
+# List of URLs for allowed Git repositories
+allow-git = []
+
+[sources.allow-org]
+# 1 or more github.com organizations to allow git sources for
+github = []
+# 1 or more gitlab.com organizations to allow git sources for
+gitlab = []
+# 1 or more bitbucket.org organizations to allow git sources for
+bitbucket = []
diff --git a/proto/command_v1.proto b/proto/command_v1.proto
new file mode 100644
index 0000000..94d9af3
--- /dev/null
+++ b/proto/command_v1.proto
@@ -0,0 +1,26 @@
+syntax = "proto3";
+package command.v1;
+
+message AddPeerRequest {
+  string address = 1;
+  optional string peer_id = 2;
+}
+
+message AddPeerResponse {
+  string peer_id = 1;
+}
+
+message CreateTunnelServerRequest {
+  string peer_id = 1;
+  optional string address = 2;
+}
+
+message CreateTunnelServerResponse {
+  string peer_id = 1;
+  string address = 2;
+}
+
+service CommandService {
+  rpc AddPeer(AddPeerRequest) returns (AddPeerResponse);
+  rpc CreateTunnelServer(CreateTunnelServerRequest) returns (CreateTunnelServerResponse);
+}
diff --git a/proto/tunnel_v1.proto b/proto/tunnel_v1.proto
new file mode 100644
index 0000000..2f7b6b3
--- /dev/null
+++ b/proto/tunnel_v1.proto
@@ -0,0 +1,15 @@
+syntax = "proto3";
+package tunnel.v1;
+
+enum TunnelCommand {
+  TUNNEL_COMMAND_UNSPECIFIED = 0;
+  TUNNEL_COMMAND_CONNECT = 1;
+  TUNNEL_COMMAND_CONNECT_RESP = 2;
+  TUNNEL_COMMAND_PACKAGE = 3;
+}
+
+message Tunnel {
+  string tunnel_id = 1;
+  TunnelCommand command = 2;
+  optional bytes data = 3;
+}
diff --git a/rustfmt.toml b/rustfmt.toml
new file mode 100644
index 0000000..cb1a6f9
--- /dev/null
+++ b/rustfmt.toml
@@ -0,0 +1,13 @@
+edition = "2021"
+unstable_features = true
+tab_spaces = 4
+hard_tabs = false
+reorder_imports = true
+format_code_in_doc_comments = true
+wrap_comments = false
+format_strings = false
+imports_granularity = "Item"
+group_imports = "StdExternalCrate"
+where_single_line = true
+trailing_comma = "Vertical"
+overflow_delimited_expr = true
diff --git a/src/command.rs b/src/command.rs
new file mode 100644
index 0000000..6ec4a73
--- /dev/null
+++ b/src/command.rs
@@ -0,0 +1,54 @@
+use tonic::Request;
+use tonic::Response;
+use tonic::Status;
+use tracing::trace;
+
+use crate::PProxyHandle;
+
+pub mod proto {
+    tonic::include_proto!("command.v1");
+}
+
+pub struct PProxyCommander {
+    handle: PProxyHandle,
+}
+
+impl PProxyCommander {
+    pub fn new(handle: PProxyHandle) -> Self {
+        Self { handle }
+    }
+
+    pub fn into_tonic_service(self) -> proto::command_service_server::CommandServiceServer<Self> {
+        proto::command_service_server::CommandServiceServer::new(self)
+    }
+}
+
+#[tonic::async_trait]
+impl proto::command_service_server::CommandService for PProxyCommander {
+    async fn add_peer(
+        &self,
+        request: Request<proto::AddPeerRequest>,
+    ) -> Result<Response<proto::AddPeerResponse>, Status> {
+        trace!("handle request: {:?}", request);
+
+        self.handle
+            .add_peer(request.into_inner())
+            .await
+            .map(Response::new)
+            .map_err(|e| tonic::Status::internal(format!("{:?}", e)))
+    }
+
+    async fn create_tunnel_server(
+        &self,
+        request: tonic::Request<proto::CreateTunnelServerRequest>,
+    ) -> std::result::Result<tonic::Response<proto::CreateTunnelServerResponse>, tonic::Status>
+    {
+        trace!("handle request: {:?}", request);
+
+        self.handle
+            .create_tunnel_server(request.into_inner())
+            .await
+            .map(Response::new)
+            .map_err(|e| tonic::Status::internal(format!("{:?}", e)))
+    }
+}
diff --git a/src/error.rs b/src/error.rs
new file mode 100644
index 0000000..69ef0dd
--- /dev/null
+++ b/src/error.rs
@@ -0,0 +1,107 @@
+use std::io::ErrorKind as IOErrorKind;
+
+#[derive(Debug, thiserror::Error)]
+#[non_exhaustive]
+pub enum Error {
+    #[error("Multiaddr parse error: {0}")]
+    MultiaddrParseError(String),
+    #[error("SocketAddr parse error: {0}")]
+    SocketAddrParseError(String),
+    #[error("Failed to extract peer id from multiaddr: {0}")]
+    FailedToExtractPeerIdFromMultiaddr(String),
+    #[error("PeerId parse error: {0}")]
+    PeerIdParseError(String),
+    #[error("TunnelId parse error: {0}")]
+    TunnelIdParseError(String),
+    #[error("Essential task closed")]
+    EssentialTaskClosed,
+    #[error("Litep2p error: {0}")]
+    Litep2p(#[from] litep2p::Error),
+    #[error("Litep2p request response error: {0:?}")]
+    Litep2pRequestResponseError(litep2p::protocol::request_response::RequestResponseError),
+    #[error("Httparse error: {0}")]
+    Httparse(#[from] httparse::Error),
+    #[error("Incomplete http request")]
+    IncompleteHttpRequest,
+    #[error("Protocol not support: {0}")]
+    ProtocolNotSupport(String),
+    #[error("Io error: {0}")]
+    Io(#[from] std::io::Error),
+    #[error("Unexpected response type")]
+    UnexpectedResponseType,
+    #[error("Tunnel error: {0:?}")]
+    Tunnel(TunnelError),
+    #[error("Protobuf decode error: {0}")]
+    ProtobufDecode(#[from] prost::DecodeError),
+}
+
+/// A list specifying general categories of Tunnel error like [std::io::ErrorKind].
+#[derive(Debug, Clone, Copy)]
+#[repr(u8)]
+#[non_exhaustive]
+pub enum TunnelError {
+    /// Failed to send data to peer.
+    DataSendFailed = 1,
+    /// The connection timed out when dialing.
+    ConnectionTimeout = 2,
+    /// Got [std::io::ErrorKind::ConnectionRefused] error from local stream.
+    ConnectionRefused = 3,
+    /// Got [std::io::ErrorKind::ConnectionAborted] error from local stream.
+    ConnectionAborted = 4,
+    /// Got [std::io::ErrorKind::ConnectionReset] error from local stream.
+    ConnectionReset = 5,
+    /// Got [std::io::ErrorKind::NotConnected] error from local stream.
+    NotConnected = 6,
+    /// The connection is closed by peer.
+    ConnectionClosed = 7,
+    /// A socket address could not be bound because the address is already in
+    /// use elsewhere.
+    AddrInUse = 8,
+    /// Tunnel already listened.
+    TunnelInUse = 9,
+    /// Unknown [std::io::ErrorKind] error.
+    Unknown = u8::MAX,
+}
+
+impl<T> From<tokio::sync::mpsc::error::SendError<T>> for Error {
+    fn from(_: tokio::sync::mpsc::error::SendError<T>) -> Self {
+        Error::EssentialTaskClosed
+    }
+}
+
+impl From<futures::channel::oneshot::Canceled> for Error {
+    fn from(_: futures::channel::oneshot::Canceled) -> Self {
+        Error::EssentialTaskClosed
+    }
+}
+
+impl From<litep2p::protocol::request_response::RequestResponseError> for Error {
+    fn from(err: litep2p::protocol::request_response::RequestResponseError) -> Self {
+        Error::Litep2pRequestResponseError(err)
+    }
+}
+
+impl From<TunnelError> for Error {
+    fn from(error: TunnelError) -> Self {
+        Error::Tunnel(error)
+    }
+}
+
+impl From<IOErrorKind> for TunnelError {
+    fn from(kind: IOErrorKind) -> TunnelError {
+        match kind {
+            IOErrorKind::ConnectionRefused => TunnelError::ConnectionRefused,
+            IOErrorKind::ConnectionAborted => TunnelError::ConnectionAborted,
+            IOErrorKind::ConnectionReset => TunnelError::ConnectionReset,
+            IOErrorKind::NotConnected => TunnelError::NotConnected,
+            IOErrorKind::AddrInUse => TunnelError::AddrInUse,
+            _ => TunnelError::Unknown,
+        }
+    }
+}
+
+impl From<std::io::Error> for TunnelError {
+    fn from(error: std::io::Error) -> TunnelError {
+        error.kind().into()
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..d649e1d
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,400 @@
+use std::collections::HashMap;
+use std::net::SocketAddr;
+use std::sync::atomic::AtomicUsize;
+use std::sync::Arc;
+use std::sync::Mutex;
+
+use futures::channel::oneshot;
+use litep2p::crypto::ed25519::SecretKey;
+use litep2p::protocol::request_response::DialOptions;
+use litep2p::protocol::request_response::RequestResponseEvent;
+use litep2p::PeerId;
+use multiaddr::Multiaddr;
+use multiaddr::Protocol;
+use prost::Message;
+use tokio::sync::mpsc;
+use tracing::warn;
+
+use crate::command::proto::AddPeerRequest;
+use crate::command::proto::AddPeerResponse;
+use crate::command::proto::CreateTunnelServerRequest;
+use crate::command::proto::CreateTunnelServerResponse;
+use crate::server::*;
+use crate::tunnel::proto;
+use crate::tunnel::tcp_connect_with_timeout;
+use crate::tunnel::Tunnel;
+use crate::tunnel::TunnelServer;
+use crate::types::*;
+
+pub mod command;
+pub mod error;
+mod server;
+mod tunnel;
+pub mod types;
+
+/// pproxy version
+pub const VERSION: &str = env!("CARGO_PKG_VERSION");
+
+/// Default channel size.
+const DEFAULT_CHANNEL_SIZE: usize = 4096;
+
+/// Timeout for proxied TCP connections
+pub const TCP_SERVER_TIMEOUT: u64 = 30;
+
+/// Public result type error type used by the crate.
+pub use crate::error::Error;
+pub type Result<T> = std::result::Result<T, error::Error>;
+
+type CommandNotification = Result<PProxyCommandResponse>;
+type CommandNotifier = oneshot::Sender<CommandNotification>;
+
+#[derive(Debug)]
+pub enum PProxyCommand {
+    AddPeer {
+        address: Multiaddr,
+        peer_id: PeerId,
+    },
+    SendConnectCommand {
+        peer_id: PeerId,
+        tunnel_id: TunnelId,
+        tunnel_tx: mpsc::Sender<Vec<u8>>,
+    },
+    SendOutboundPackageCommand {
+        peer_id: PeerId,
+        tunnel_id: TunnelId,
+        data: Vec<u8>,
+    },
+}
+
+pub enum PProxyCommandResponse {
+    AddPeer { peer_id: PeerId },
+    SendConnectCommand {},
+    SendOutboundPackageCommand {},
+}
+
+pub struct PProxy {
+    command_tx: mpsc::Sender<(PProxyCommand, CommandNotifier)>,
+    command_rx: mpsc::Receiver<(PProxyCommand, CommandNotifier)>,
+    p2p_server: P2pServer,
+    proxy_addr: Option<SocketAddr>,
+    inbound_tunnels: HashMap<(PeerId, TunnelId), Tunnel>,
+    tunnel_txs: HashMap<(PeerId, TunnelId), mpsc::Sender<Vec<u8>>>,
+}
+
+pub struct PProxyHandle {
+    command_tx: mpsc::Sender<(PProxyCommand, CommandNotifier)>,
+    next_tunnel_id: Arc<AtomicUsize>,
+    tunnel_servers: Mutex<HashMap<PeerId, TunnelServer>>,
+}
+
+pub enum FullLength {
+    NotParsed,
+    NotSet,
+    Chunked,
+    Parsed(usize),
+}
+
+impl FullLength {
+    pub fn not_parsed(&self) -> bool {
+        matches!(self, FullLength::NotParsed)
+    }
+
+    pub fn chunked(&self) -> bool {
+        matches!(self, FullLength::Chunked)
+    }
+}
+
+impl PProxy {
+    pub fn new(
+        secret_key: SecretKey,
+        server_addr: SocketAddr,
+        proxy_addr: Option<SocketAddr>,
+    ) -> (Self, PProxyHandle) {
+        let (command_tx, command_rx) = mpsc::channel(DEFAULT_CHANNEL_SIZE);
+
+        (
+            Self {
+                command_tx: command_tx.clone(),
+                command_rx,
+                p2p_server: P2pServer::new(secret_key, server_addr),
+                proxy_addr,
+                inbound_tunnels: HashMap::new(),
+                tunnel_txs: HashMap::new(),
+            },
+            PProxyHandle {
+                command_tx,
+                next_tunnel_id: Default::default(),
+                tunnel_servers: Default::default(),
+            },
+        )
+    }
+
+    pub async fn run(mut self) {
+        loop {
+            tokio::select! {
+                // Events coming from the network have higher priority than user commands
+                biased;
+
+                event = self.p2p_server.next_event() => match event {
+                    None => return,
+                    Some(event) => if let Err(error) = self.handle_p2p_server_event(event).await {
+                        warn!("failed to handle event: {:?}", error);
+                    }
+                },
+
+                command = self.command_rx.recv() => match command {
+                    None => return,
+                    Some((command, tx)) => if let Err(error) = self.handle_command(command, tx).await {
+                        warn!("failed to handle command: {:?}", error);
+                    }
+                }
+            }
+        }
+    }
+
+    async fn handle_p2p_server_event(&mut self, event: P2pServerEvent) -> Result<()> {
+        tracing::debug!("received P2pServerEvent: {:?}", event);
+        #[allow(clippy::single_match)]
+        match event {
+            P2pServerEvent::Litep2p(ev) => {
+                tracing::debug!("received Litep2p event: {:?}", ev);
+            }
+            P2pServerEvent::TunnelEvent(RequestResponseEvent::RequestReceived {
+                peer,
+                request_id,
+                request,
+                ..
+            }) => {
+                let msg = proto::Tunnel::decode(request.as_slice())?;
+                tracing::debug!("received Tunnel msg: {:?}", msg);
+
+                match msg.command() {
+                    proto::TunnelCommand::Connect => {
+                        tracing::info!("received connect command from peer: {:?}", peer);
+                        let Some(proxy_addr) = self.proxy_addr else {
+                            return Err(Error::ProtocolNotSupport("No proxy_addr".to_string()));
+                        };
+
+                        let tunnel_id = msg
+                            .tunnel_id
+                            .parse()
+                            .map_err(|_| Error::TunnelIdParseError(msg.tunnel_id))?;
+
+                        let stream = tcp_connect_with_timeout(proxy_addr, 60).await?;
+                        let mut tunnel = Tunnel::new(peer, tunnel_id, self.command_tx.clone());
+                        let (tunnel_tx, tunnel_rx) = mpsc::channel(1024);
+                        tunnel.listen(stream, tunnel_rx).await?;
+
+                        self.inbound_tunnels.insert((peer, tunnel_id), tunnel);
+                        self.tunnel_txs.insert((peer, tunnel_id), tunnel_tx);
+
+                        let response = proto::Tunnel {
+                            tunnel_id: tunnel_id.to_string(),
+                            command: proto::TunnelCommand::ConnectResp.into(),
+                            data: None,
+                        };
+
+                        self.p2p_server
+                            .tunnel_handle
+                            .send_response(request_id, response.encode_to_vec());
+                    }
+
+                    proto::TunnelCommand::Package => {
+                        let tunnel_id = msg
+                            .tunnel_id
+                            .parse()
+                            .map_err(|_| Error::TunnelIdParseError(msg.tunnel_id))?;
+
+                        let Some(tx) = self.tunnel_txs.get(&(peer, tunnel_id)) else {
+                            return Err(Error::ProtocolNotSupport(
+                                "No tunnel for Package".to_string(),
+                            ));
+                        };
+
+                        tx.send(msg.data.unwrap_or_default()).await?;
+
+                        // Have to do this to close the response waiter in remote.
+                        self.p2p_server
+                            .tunnel_handle
+                            .send_response(request_id, vec![]);
+                    }
+
+                    _ => {
+                        return Err(Error::ProtocolNotSupport(
+                            "Wrong tunnel command".to_string(),
+                        ));
+                    }
+                }
+            }
+            _ => {}
+        }
+
+        Ok(())
+    }
+
+    async fn handle_command(&mut self, command: PProxyCommand, tx: CommandNotifier) -> Result<()> {
+        match command {
+            PProxyCommand::AddPeer { address, peer_id } => {
+                self.on_add_peer(address, peer_id, tx).await
+            }
+            PProxyCommand::SendConnectCommand {
+                peer_id,
+                tunnel_id,
+                tunnel_tx,
+            } => {
+                self.on_send_connect_command(peer_id, tunnel_id, tunnel_tx, tx)
+                    .await
+            }
+            PProxyCommand::SendOutboundPackageCommand {
+                peer_id,
+                tunnel_id,
+                data,
+            } => {
+                self.on_send_outbound_package_command(peer_id, tunnel_id, data, tx)
+                    .await
+            }
+        }
+    }
+
+    async fn on_add_peer(
+        &mut self,
+        addr: Multiaddr,
+        peer_id: PeerId,
+        tx: CommandNotifier,
+    ) -> Result<()> {
+        self.p2p_server
+            .litep2p
+            .add_known_address(peer_id, vec![addr].into_iter());
+
+        tx.send(Ok(PProxyCommandResponse::AddPeer { peer_id }))
+            .map_err(|_| Error::EssentialTaskClosed)
+    }
+
+    async fn on_send_connect_command(
+        &mut self,
+        peer_id: PeerId,
+        tunnel_id: TunnelId,
+        tunnel_tx: mpsc::Sender<Vec<u8>>,
+        tx: CommandNotifier,
+    ) -> Result<()> {
+        self.tunnel_txs.insert((peer_id, tunnel_id), tunnel_tx);
+
+        let request = proto::Tunnel {
+            tunnel_id: tunnel_id.to_string(),
+            command: proto::TunnelCommand::Connect.into(),
+            data: None,
+        }
+        .encode_to_vec();
+
+        self.p2p_server
+            .tunnel_handle
+            .send_request(peer_id, request, DialOptions::Dial)
+            .await?;
+
+        tracing::info!("send connect command to peer_id: {:?}", peer_id);
+
+        tx.send(Ok(PProxyCommandResponse::SendConnectCommand {}))
+            .map_err(|_| Error::EssentialTaskClosed)
+    }
+
+    async fn on_send_outbound_package_command(
+        &mut self,
+        peer_id: PeerId,
+        tunnel_id: TunnelId,
+        data: Vec<u8>,
+        tx: CommandNotifier,
+    ) -> Result<()> {
+        let request = proto::Tunnel {
+            tunnel_id: tunnel_id.to_string(),
+            command: proto::TunnelCommand::Package.into(),
+            data: Some(data),
+        }
+        .encode_to_vec();
+
+        self.p2p_server
+            .tunnel_handle
+            .send_request(peer_id, request, DialOptions::Dial)
+            .await?;
+
+        tx.send(Ok(PProxyCommandResponse::SendOutboundPackageCommand {}))
+            .map_err(|_| Error::EssentialTaskClosed)
+    }
+}
+
+impl PProxyHandle {
+    pub async fn add_peer(&self, request: AddPeerRequest) -> Result<AddPeerResponse> {
+        let (tx, rx) = oneshot::channel();
+
+        let address: Multiaddr = request
+            .address
+            .parse()
+            .map_err(|_| Error::MultiaddrParseError(request.address.clone()))?;
+
+        let peer_id = request.peer_id.map_or_else(
+            || extract_peer_id_from_multiaddr(&address),
+            |peer_id| {
+                peer_id
+                    .parse()
+                    .map_err(|_| Error::PeerIdParseError(peer_id))
+            },
+        )?;
+
+        self.command_tx
+            .send((PProxyCommand::AddPeer { address, peer_id }, tx))
+            .await?;
+
+        let response = rx.await??;
+
+        match response {
+            PProxyCommandResponse::AddPeer { peer_id } => Ok(AddPeerResponse {
+                peer_id: peer_id.to_string(),
+            }),
+            _ => Err(Error::UnexpectedResponseType),
+        }
+    }
+
+    pub async fn create_tunnel_server(
+        &self,
+        request: CreateTunnelServerRequest,
+    ) -> Result<CreateTunnelServerResponse> {
+        let peer_id = request
+            .peer_id
+            .parse()
+            .map_err(|_| Error::PeerIdParseError(request.peer_id))?;
+
+        let address = request.address.unwrap_or("127.0.0.1:0".to_string());
+        let address = address
+            .parse()
+            .map_err(|_| Error::SocketAddrParseError(address))?;
+
+        let mut tunnel_server = TunnelServer::new(
+            peer_id,
+            self.next_tunnel_id.clone(),
+            self.command_tx.clone(),
+        );
+        let address = tunnel_server.listen(address).await?;
+
+        self.tunnel_servers
+            .lock()
+            .unwrap()
+            .insert(peer_id, tunnel_server);
+
+        Ok(CreateTunnelServerResponse {
+            peer_id: peer_id.to_string(),
+            address: address.to_string(),
+        })
+    }
+}
+
+fn extract_peer_id_from_multiaddr(multiaddr: &Multiaddr) -> Result<PeerId> {
+    let protocol = multiaddr.iter().last();
+
+    let Some(Protocol::P2p(multihash)) = protocol else {
+        return Err(Error::FailedToExtractPeerIdFromMultiaddr(
+            multiaddr.to_string(),
+        ));
+    };
+
+    PeerId::from_multihash(multihash)
+        .map_err(|_| Error::FailedToExtractPeerIdFromMultiaddr(multiaddr.to_string()))
+}
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..cd78a77
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,194 @@
+use std::net::SocketAddr;
+
+use clap::Arg;
+use clap::ArgAction;
+use clap::ArgMatches;
+use clap::Command;
+use dephy_pproxy::command::proto::command_service_client::CommandServiceClient;
+use dephy_pproxy::command::proto::AddPeerRequest;
+use dephy_pproxy::command::proto::CreateTunnelServerRequest;
+use dephy_pproxy::command::PProxyCommander;
+use dephy_pproxy::PProxy;
+use litep2p::crypto::ed25519::SecretKey;
+use multiaddr::Multiaddr;
+use tonic::transport::Server;
+
+fn parse_args() -> Command {
+    let mut app = Command::new("pproxy")
+        .about("A proxy tool based on p2p network")
+        .version("0.1.0");
+
+    let serve = Command::new("serve")
+        .about("Start a pproxy server")
+        .arg(
+            Arg::new("KEY")
+                .long("key")
+                .num_args(1)
+                .action(ArgAction::Set)
+                .help("Ed25519 key. If not set, a random key will be generated"),
+        )
+        .arg(
+            Arg::new("SERVER_ADDR")
+                .long("server-addr")
+                .num_args(1)
+                .default_value("127.0.0.1:10010")
+                .action(ArgAction::Set)
+                .help("Server address"),
+        )
+        .arg(
+            Arg::new("COMMANDER_SERVER_ADDR")
+                .long("commander-server-addr")
+                .num_args(1)
+                .default_value("127.0.0.1:10086")
+                .action(ArgAction::Set)
+                .help("Commander server address"),
+        )
+        .arg(
+            Arg::new("PROXY_ADDR")
+                .long("proxy-addr")
+                .num_args(1)
+                .action(ArgAction::Set)
+                .help("Will reverse proxy this address if set"),
+        );
+
+    let create_tunnel_server = Command::new("create_tunnel_server")
+        .about("Set up a tunnel server that allows users proxy data to remote peer")
+        .arg(
+            Arg::new("COMMANDER_SERVER_ADDR")
+                .long("commander-server-addr")
+                .num_args(1)
+                .default_value("127.0.0.1:10086")
+                .action(ArgAction::Set)
+                .help("Commander server address"),
+        )
+        .arg(
+            Arg::new("TUNNEL_SERVER_ADDR")
+                .long("tunnel-server-addr")
+                .num_args(1)
+                .action(ArgAction::Set)
+                .help("Tunnel server address, if not set a random port will be used"),
+        )
+        .arg(
+            Arg::new("PEER_MULTIADDR")
+                .long("peer-multiaddr")
+                .num_args(1)
+                .action(ArgAction::Set)
+                .required(true)
+                .help("The multiaddr of the remote peer"),
+        );
+
+    app = app
+        .arg_required_else_help(true)
+        .subcommand(serve)
+        .subcommand(create_tunnel_server);
+
+    app
+}
+
+async fn serve(args: &ArgMatches) {
+    let key = args
+        .get_one::<String>("KEY")
+        .map(|key| {
+            SecretKey::try_from_bytes(hex::decode(key).expect("Invalid key")).expect("Invalid key")
+        })
+        .unwrap_or_else(|| {
+            let key = SecretKey::generate();
+            println!("Generated key: {}", hex::encode(&key));
+            key
+        });
+    let server_addr = args
+        .get_one::<String>("SERVER_ADDR")
+        .unwrap()
+        .parse()
+        .expect("Invalid server address");
+    let commander_server_addr = args
+        .get_one::<String>("COMMANDER_SERVER_ADDR")
+        .unwrap()
+        .parse()
+        .expect("Invalid command server address");
+    let proxy_addr = args
+        .get_one::<String>("PROXY_ADDR")
+        .map(|addr| addr.parse().expect("Invalid proxy address"));
+
+    println!("server_addr: {}", server_addr);
+    println!("commander_server_addr: {}", commander_server_addr);
+
+    let (pproxy, pproxy_handle) = PProxy::new(key, server_addr, proxy_addr);
+
+    let commander = PProxyCommander::new(pproxy_handle);
+    let commander_server =
+        Server::builder().add_service(tonic_web::enable(commander.into_tonic_service()));
+
+    futures::join!(
+        async move {
+            commander_server
+                .serve(commander_server_addr)
+                .await
+                .expect("Commander server failed")
+        },
+        async move { pproxy.run().await }
+    );
+}
+
+async fn create_tunnel_server(args: &ArgMatches) {
+    let commander_server_addr = args
+        .get_one::<String>("COMMANDER_SERVER_ADDR")
+        .unwrap()
+        .parse::<SocketAddr>()
+        .expect("Invalid command server address");
+    let tunnel_server_addr = args.get_one::<String>("TUNNEL_SERVER_ADDR").map(|addr| {
+        addr.parse::<SocketAddr>()
+            .expect("Invalid tunnel server address")
+            .to_string()
+    });
+    let peer_multiaddr = args
+        .get_one::<String>("PEER_MULTIADDR")
+        .unwrap()
+        .parse::<Multiaddr>()
+        .expect("Missing peer multiaddr");
+
+    let mut client = CommandServiceClient::connect(format!("http://{}", commander_server_addr))
+        .await
+        .expect("Connect to commander server failed");
+
+    let pp_response = client
+        .add_peer(AddPeerRequest {
+            address: peer_multiaddr.to_string(),
+            peer_id: None,
+        })
+        .await
+        .expect("Add peer failed")
+        .into_inner();
+
+    let peer_id = pp_response.peer_id;
+
+    let pp_response = client
+        .create_tunnel_server(CreateTunnelServerRequest {
+            peer_id,
+            address: tunnel_server_addr,
+        })
+        .await
+        .expect("Create tunnel failed")
+        .into_inner();
+
+    println!("tunnel_server_addr: {}", pp_response.address);
+}
+
+#[tokio::main]
+async fn main() {
+    let _ = tracing_subscriber::fmt()
+        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
+        .try_init();
+
+    let cmd = parse_args();
+
+    match cmd.get_matches().subcommand() {
+        Some(("serve", args)) => {
+            serve(args).await;
+        }
+        Some(("create_tunnel_server", args)) => {
+            create_tunnel_server(args).await;
+        }
+        _ => unreachable!(),
+    }
+}
diff --git a/src/server.rs b/src/server.rs
new file mode 100644
index 0000000..6347f4b
--- /dev/null
+++ b/src/server.rs
@@ -0,0 +1,73 @@
+use std::net::IpAddr;
+use std::net::SocketAddr;
+
+use futures::StreamExt;
+use litep2p::config::ConfigBuilder;
+use litep2p::crypto::ed25519::SecretKey;
+use litep2p::protocol::request_response::Config as RequestResponseConfig;
+use litep2p::protocol::request_response::ConfigBuilder as RequestResponseConfigBuilder;
+use litep2p::protocol::request_response::RequestResponseEvent;
+use litep2p::protocol::request_response::RequestResponseHandle;
+use litep2p::transport::tcp::config::Config as TcpConfig;
+use litep2p::types::protocol::ProtocolName;
+use litep2p::Litep2p;
+use litep2p::Litep2pEvent;
+
+#[derive(Debug)]
+pub enum P2pServerEvent {
+    Litep2p(Litep2pEvent),
+    TunnelEvent(RequestResponseEvent),
+}
+
+pub struct P2pServer {
+    pub(crate) litep2p: Litep2p,
+    pub(crate) tunnel_handle: RequestResponseHandle,
+}
+
+impl P2pServer {
+    pub fn new(secret_key: SecretKey, server_addr: SocketAddr) -> Self {
+        let (tunnel_config, tunnel_handle) = Self::init_tunnel();
+
+        let (ip_type, ip, port) = match server_addr.ip() {
+            IpAddr::V4(ip) => ("ip4", ip.to_string(), server_addr.port()),
+            IpAddr::V6(ip) => ("ip6", ip.to_string(), server_addr.port()),
+        };
+
+        let litep2p_config = ConfigBuilder::new()
+            .with_keypair(secret_key.into())
+            .with_tcp(TcpConfig {
+                listen_addresses: vec![format!("/{ip_type}/{ip}/tcp/{port}").parse().unwrap()],
+                ..Default::default()
+            })
+            .with_request_response_protocol(tunnel_config)
+            .build();
+
+        let litep2p = Litep2p::new(litep2p_config).expect("failed to create litep2p");
+        let addresses = litep2p.listen_addresses().next().unwrap();
+        println!("Litep2p listening on {:?}", addresses);
+
+        Self {
+            litep2p,
+            tunnel_handle,
+        }
+    }
+
+    fn init_tunnel() -> (RequestResponseConfig, RequestResponseHandle) {
+        RequestResponseConfigBuilder::new(ProtocolName::from("/pproxy/tunnel/1"))
+            .with_max_size(1024 * 1024)
+            .with_timeout(std::time::Duration::from_secs(120))
+            .build()
+    }
+
+    pub async fn next_event(&mut self) -> Option<P2pServerEvent> {
+        tokio::select! {
+            // TODO: next_event may not be cancel safe
+            ev = self.litep2p.next_event() => {
+                ev.map(P2pServerEvent::Litep2p)
+            }
+            ev = self.tunnel_handle.next() => {
+                ev.map(P2pServerEvent::TunnelEvent)
+            }
+        }
+    }
+}
diff --git a/src/tunnel.rs b/src/tunnel.rs
new file mode 100644
index 0000000..27b92b1
--- /dev/null
+++ b/src/tunnel.rs
@@ -0,0 +1,315 @@
+use std::collections::HashMap;
+use std::net::SocketAddr;
+use std::sync::atomic::AtomicUsize;
+use std::sync::atomic::Ordering;
+use std::sync::Arc;
+use std::time::Duration;
+
+use futures::channel::oneshot;
+use litep2p::PeerId;
+use tokio::io::AsyncReadExt;
+use tokio::io::AsyncWriteExt;
+use tokio::net::TcpListener;
+use tokio::net::TcpStream;
+use tokio::sync::mpsc;
+use tokio::time::timeout;
+use tokio_util::sync::CancellationToken;
+
+use crate::error::TunnelError;
+use crate::types::TunnelId;
+use crate::CommandNotifier;
+use crate::PProxyCommand;
+
+pub mod proto {
+    tonic::include_proto!("tunnel.v1");
+}
+
+pub struct TunnelServer {
+    peer_id: PeerId,
+    next_tunnel_id: Arc<AtomicUsize>,
+    pproxy_command_tx: mpsc::Sender<(PProxyCommand, CommandNotifier)>,
+}
+
+pub struct TunnelServerListener {
+    peer_id: PeerId,
+    next_tunnel_id: Arc<AtomicUsize>,
+    pproxy_command_tx: mpsc::Sender<(PProxyCommand, CommandNotifier)>,
+    tunnels: HashMap<TunnelId, Tunnel>,
+}
+
+pub struct Tunnel {
+    peer_id: PeerId,
+    tunnel_id: TunnelId,
+    pproxy_command_tx: mpsc::Sender<(PProxyCommand, CommandNotifier)>,
+    listener_cancel_token: Option<CancellationToken>,
+    listener: Option<tokio::task::JoinHandle<()>>,
+}
+
+pub struct TunnelListener {
+    peer_id: PeerId,
+    tunnel_id: TunnelId,
+    local_stream: TcpStream,
+    remote_stream_rx: mpsc::Receiver<Vec<u8>>,
+    pproxy_command_tx: mpsc::Sender<(PProxyCommand, CommandNotifier)>,
+    cancel_token: CancellationToken,
+}
+
+impl Drop for Tunnel {
+    fn drop(&mut self) {
+        if let Some(cancel_token) = self.listener_cancel_token.take() {
+            cancel_token.cancel();
+        }
+
+        if let Some(listener) = self.listener.take() {
+            tokio::spawn(async move {
+                tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+                listener.abort();
+            });
+        }
+
+        tracing::info!("Tunnel {}-{} dropped", self.peer_id, self.tunnel_id);
+    }
+}
+
+impl TunnelServer {
+    pub fn new(
+        peer_id: PeerId,
+        next_tunnel_id: Arc<AtomicUsize>,
+        pproxy_command_tx: mpsc::Sender<(PProxyCommand, CommandNotifier)>,
+    ) -> Self {
+        Self {
+            peer_id,
+            next_tunnel_id,
+            pproxy_command_tx,
+        }
+    }
+
+    pub async fn listen(&mut self, address: SocketAddr) -> Result<SocketAddr, TunnelError> {
+        let tcp_listener = TcpListener::bind(address).await?;
+        let local_addr = tcp_listener.local_addr()?;
+
+        let mut listener = TunnelServerListener::new(
+            self.peer_id,
+            self.next_tunnel_id.clone(),
+            self.pproxy_command_tx.clone(),
+        );
+        tokio::spawn(Box::pin(async move { listener.listen(tcp_listener).await }));
+
+        Ok(local_addr)
+    }
+}
+
+impl TunnelServerListener {
+    fn new(
+        peer_id: PeerId,
+        next_tunnel_id: Arc<AtomicUsize>,
+        pproxy_command_tx: mpsc::Sender<(PProxyCommand, CommandNotifier)>,
+    ) -> Self {
+        Self {
+            peer_id,
+            next_tunnel_id,
+            pproxy_command_tx,
+            tunnels: HashMap::new(),
+        }
+    }
+
+    fn next_tunnel_id(&mut self) -> TunnelId {
+        TunnelId::from(self.next_tunnel_id.fetch_add(1usize, Ordering::Relaxed))
+    }
+
+    async fn listen(&mut self, listener: TcpListener) {
+        loop {
+            let Ok((stream, _)) = listener.accept().await else {
+                continue;
+            };
+
+            let tunnel_id = self.next_tunnel_id();
+            let mut tunnel = Tunnel::new(self.peer_id, tunnel_id, self.pproxy_command_tx.clone());
+
+            let (tx, rx) = oneshot::channel();
+            let (tunnel_tx, tunnel_rx) = mpsc::channel(1024);
+            if let Err(e) = self
+                .pproxy_command_tx
+                .send((
+                    PProxyCommand::SendConnectCommand {
+                        peer_id: self.peer_id,
+                        tunnel_id,
+                        tunnel_tx,
+                    },
+                    tx,
+                ))
+                .await
+            {
+                tracing::error!("Send connect command channel tx failed: {e:?}");
+                continue;
+            }
+
+            match rx.await {
+                Err(e) => {
+                    tracing::error!("Send connect command channel rx failed: {e:?}");
+                    continue;
+                }
+                Ok(Err(e)) => {
+                    tracing::error!("Send connect command channel failed: {e:?}");
+                    continue;
+                }
+                Ok(Ok(_resp)) => {}
+            }
+
+            tokio::time::sleep(tokio::time::Duration::from_secs(1)).await;
+            if let Err(e) = tunnel.listen(stream, tunnel_rx).await {
+                tracing::error!("Tunnel listen failed: {e:?}");
+                continue;
+            };
+
+            self.tunnels.insert(tunnel_id, tunnel);
+        }
+    }
+}
+
+impl Tunnel {
+    pub fn new(
+        peer_id: PeerId,
+        tunnel_id: TunnelId,
+        pproxy_command_tx: mpsc::Sender<(PProxyCommand, CommandNotifier)>,
+    ) -> Self {
+        Self {
+            peer_id,
+            tunnel_id,
+            pproxy_command_tx,
+            listener: None,
+            listener_cancel_token: None,
+        }
+    }
+
+    pub async fn listen(
+        &mut self,
+        local_stream: TcpStream,
+        remote_stream_rx: mpsc::Receiver<Vec<u8>>,
+    ) -> Result<(), TunnelError> {
+        if self.listener.is_some() {
+            return Err(TunnelError::TunnelInUse);
+        }
+
+        let mut listener = TunnelListener::new(
+            self.peer_id,
+            self.tunnel_id,
+            local_stream,
+            remote_stream_rx,
+            self.pproxy_command_tx.clone(),
+        )
+        .await;
+        let listener_cancel_token = listener.cancel_token();
+        let listener_handler = tokio::spawn(Box::pin(async move { listener.listen().await }));
+
+        self.listener = Some(listener_handler);
+        self.listener_cancel_token = Some(listener_cancel_token);
+
+        Ok(())
+    }
+}
+
+impl TunnelListener {
+    async fn new(
+        peer_id: PeerId,
+        tunnel_id: TunnelId,
+        local_stream: TcpStream,
+        remote_stream_rx: mpsc::Receiver<Vec<u8>>,
+        pproxy_command_tx: mpsc::Sender<(PProxyCommand, CommandNotifier)>,
+    ) -> Self {
+        Self {
+            peer_id,
+            tunnel_id,
+            local_stream,
+            remote_stream_rx,
+            pproxy_command_tx,
+            cancel_token: CancellationToken::new(),
+        }
+    }
+
+    fn cancel_token(&self) -> CancellationToken {
+        self.cancel_token.clone()
+    }
+
+    async fn listen(&mut self) {
+        let (mut local_read, mut local_write) = self.local_stream.split();
+
+        let listen_local = async {
+            loop {
+                if self.cancel_token.is_cancelled() {
+                    break TunnelError::ConnectionClosed;
+                }
+
+                let mut buf = [0u8; 30000];
+                match local_read.read(&mut buf).await {
+                    Err(e) => {
+                        break e.kind().into();
+                    }
+                    Ok(0) => {
+                        break TunnelError::ConnectionClosed;
+                    }
+                    Ok(n) => {
+                        let (tx, rx) = oneshot::channel();
+                        let data = buf[..n].to_vec();
+                        let command = PProxyCommand::SendOutboundPackageCommand {
+                            peer_id: self.peer_id,
+                            tunnel_id: self.tunnel_id,
+                            data,
+                        };
+                        if let Err(e) = self.pproxy_command_tx.send((command, tx)).await {
+                            tracing::error!("Send tcp package channel tx failed: {e:?}");
+                            break TunnelError::DataSendFailed;
+                        };
+
+                        match rx.await {
+                            Err(e) => {
+                                tracing::error!("Send tcp package channel rx failed: {e:?}");
+                                break TunnelError::DataSendFailed;
+                            }
+                            Ok(Err(e)) => {
+                                tracing::error!("Send tcp package channel failed: {e:?}");
+                                break TunnelError::DataSendFailed;
+                            }
+                            Ok(Ok(_resp)) => {}
+                        }
+                    }
+                }
+            }
+        };
+
+        let listen_remote = async {
+            loop {
+                if self.cancel_token.is_cancelled() {
+                    break TunnelError::ConnectionClosed;
+                }
+
+                if let Some(body) = self.remote_stream_rx.recv().await {
+                    if let Err(e) = local_write.write_all(&body).await {
+                        tracing::error!("Write to local stream failed: {e:?}");
+                        break e.kind().into();
+                    }
+                }
+            }
+        };
+
+        tokio::select! {
+            defeat = listen_local => {
+                tracing::info!("Local stream closed: {defeat:?}");
+            },
+            defeat = listen_remote => {
+                tracing::info!("Remote stream closed: {defeat:?}");
+            }
+        }
+    }
+}
+
+pub async fn tcp_connect_with_timeout(
+    addr: SocketAddr,
+    request_timeout_s: u64,
+) -> Result<TcpStream, TunnelError> {
+    let fut = TcpStream::connect(addr);
+    match timeout(Duration::from_secs(request_timeout_s), fut).await {
+        Ok(result) => result.map_err(From::from),
+        Err(_) => Err(TunnelError::ConnectionTimeout),
+    }
+}
diff --git a/src/types.rs b/src/types.rs
new file mode 100644
index 0000000..498302d
--- /dev/null
+++ b/src/types.rs
@@ -0,0 +1,24 @@
+use std::fmt::Display;
+use std::str::FromStr;
+
+#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
+pub struct TunnelId(usize);
+
+impl TunnelId {
+    pub fn from<T: Into<usize>>(value: T) -> Self {
+        TunnelId(value.into())
+    }
+}
+
+impl Display for TunnelId {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", self.0)
+    }
+}
+
+impl FromStr for TunnelId {
+    type Err = std::num::ParseIntError;
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        s.parse().map(TunnelId)
+    }
+}
diff --git a/taplo.toml b/taplo.toml
new file mode 100644
index 0000000..f028e77
--- /dev/null
+++ b/taplo.toml
@@ -0,0 +1,36 @@
+## https://taplo.tamasfe.dev/configuration/#configuration-file
+
+include = ["**/Cargo.toml"]
+
+[formatting]
+# Align consecutive entries vertically.
+align_entries = false
+# Append trailing commas for multi-line arrays.
+array_trailing_comma = true
+# Expand arrays to multiple lines that exceed the maximum column width.
+array_auto_expand = true
+# Collapse arrays that don't exceed the maximum column width and don't contain comments.
+array_auto_collapse = false
+# Omit white space padding from single-line arrays
+compact_arrays = true
+# Omit white space padding from the start and end of inline tables.
+compact_inline_tables = false
+# Maximum column width in characters, affects array expansion and collapse, this doesn't take whitespace into account.
+# Note that this is not set in stone, and works on a best-effort basis.
+column_width = 500
+# Indent based on tables and arrays of tables and their subtables, subtables out of order are not indented.
+indent_tables = false
+# The substring that is used for indentation, should be tabs or spaces (but technically can be anything).
+indent_string = '    '
+# Add trailing newline at the end of the file if not present.
+trailing_newline = true
+# Alphabetically reorder keys that are not separated by empty lines.
+reorder_keys = false
+# Maximum amount of allowed consecutive blank lines. This does not affect the whitespace at the end of the document, as it is always stripped.
+allowed_blank_lines = 1
+# Use CRLF for line endings.
+crlf = false
+
+[[rule]]
+keys = ["dependencies", "dev-dependencies", "build-dependencies", "workspace.dependencies"]
+formatting = { reorder_keys = true }