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A lightweight proxy designed to be proof to IP blocking measures

Project description

ArkC is a lightweight proxy designed to be proof to IP blocking measures and offer high proxy speed via multi-connection transmission and swapping connections.

ArkC-Server is the server-side utility.

Note: ArkC 0.3 is not compatible with 0.2 or earlier versions.


What is ArkC?

ArkC is not another Shadowsocks.

It enable server owners to let anyone enjoy free web browsing, without worrying IP blacklists. With ArkC VPS owners they are better equipped to share their VPS to people around them, or share online, the proxy hosted on their VPS.

For a more detailed description, please visit our website and read our page Understand ArkC. 中文版本的介绍在这一页面 ArkC的原理

This is what it tries to do by default:

And making it a little bit more complicated, e.g. set obfs_level to 3 or use a socks proxy:

Note, “anonymous_proxy” can be anything you set!

Setup and Requirement

For a probably more detailed guide: Deployment and Installation. 对于安装与部署的中文说明在 部署与安装ArkC 这一页面。

Running ArkC-Server requires Python 2.7 and Twisted (Python 3 is currently not supported for compatibility issues) and txsocksx. A virtual environment is generally recommended.

sudo pip install arkcserver

You may need python development environment.

Debian/Ubuntu users:

sudo apt-get install python python-pip python-dev

Fedora users:

sudo yum python python-pip python-devel

You may also install ArkC Server from source.

If you need to support portable proxy function, like MEEK (required to integrate with GAE) or obfs4proxy, please follow the above link to


By default ArkC Server needs to listen to port 53 to support DNS relay function (client may connect to server through multiple steps of DNS queries). Usually this requires pre-configuration or root privillege.


For detailed documentation, please visit our Documentation page.

中文版本的使用文档,请参见 如何使用ArkC


arkcserver [-h] [-v] [-ep (use external proxy)] [-t (use transmit mode)] [-c <Path of the config Json file, default = config.json>]

to start the server.


arkcserver-mailcheck -db DATABASE_ADDRESS

To start a mail server and receive client credentials automatically.

In this version, any private certificate should be in the form of PEM without encryption, while any public certificate should be in the form of ssh-rsa.

For the configuration file, you can find an example here:

    "local_cert_path": "testfiles/server",
    "clients": [
        ["testfiles/", <sha1 of client1's private key>],
        ["testfiles/", <sha1 of client2's private key>]

For a full list of settings:

Index name Value Type & Description Required / Default
udp_port int, udp listening port (
proxy_port int, local/ext proxy port 8100(local)/8123(ext)
local_cert_path string, path of server pri REQUIRED
central_cert_path string, path of central server pub REQUIRED if using transmit mode
clients list, (path of client pub, sha1 of client pri) pairs REQUIRED unless “clients_db” is set
clients_db string, path of the sqlite db where keys are stored or updated REQUIRED unless “clients” is set
pt_exec string, command line of pluggable transport executable “obfs4proxy”
obfs_level integer, obfs level 0~3 0
meek_url string, URL of meek’s GAE destination
socks_proxy list, (host, port) None (Unused)
delegated_domain string, the SOA record to respond “”
self_domain string, the A record pointing to the server “”

You can get your domain at

Note: if obfs_level is set to a non-zero value, obfs4_exec must be appropriate set. Obfs4 will use an IAT mode of (obfs_level - 1), which means if obfs_level is set to 2 or 3, the connection speed may be affected.

Join our “Shared Server Plan”

We want to provide free proxy service for netizens behind censorship firewalls, thus may we invite you to join our “Shared Server Plan” and add your VPS to our server pool, open for all ArkC users.

We are raising fund to provide rewards for VPS owners in this plan via Google Play / iTunes gift cards. Read the Plan homepage for more information.

Questions | 使用或安装时遇到问题

Go to our FAQ page.

常见问题请参考 FAQ


The http proxy part is based on twisted-connect-proxy by Peter Ruibal, released under BSD License.

The server-end software adapted part of the pyotp library created by Mark Percival His code is reused under Python Port copyright, license attached.

File arkcserver/ is based on ptproxy by Dingyuan Wang. Code reused and edited under MIT license, attached in file.


Copyright 2015 ArkC Technology.

The ArkC-client and ArkC-server utilities are licensed under GNU GPLv2. You should obtain a copy of the license with the software.

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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