HevSocks5Server

HevSocks5Server is a simple, lightweight socks5 server.

Features

• IPv4/IPv6. (dual stack)
• Standard CONNECT command.
• Standard UDP ASSOCIATE command. [^1]
• Extended FWD UDP command. (UDP in TCP) [^2]
• Multiple username/password authentication.

Benchmarks

See here for more details.

Speed

CPU usage

Memory usage

How to Build

Unix

git clone --recursive https://github.com/heiher/hev-socks5-server
cd hev-socks5-server
make

# statically link
make ENABLE_STATIC=1

Android

mkdir hev-socks5-server
cd hev-socks5-server
git clone --recursive https://github.com/heiher/hev-socks5-server jni
cd jni
ndk-build

iOS and MacOS

git clone --recursive https://github.com/heiher/hev-socks5-server
cd hev-socks5-server
# will generate HevSocks5Server.xcframework
./build-apple.sh

Windows (MSYS2)

export MSYS=winsymlinks:native
git clone --recursive https://github.com/heiher/hev-socks5-server
cd hev-socks5-server
make

How to Use

Config

main:
  # Worker threads
  workers: 4
  # Listen port
  port: 1080
  # Listen address (ipv4|ipv6)
  listen-address: '::'
  # UDP listen port (0: random, a-b: range)
# udp-port: 0
  # UDP listen address (ipv4|ipv6)
# udp-listen-address: '::1'
  # UDP public address (ipv4)
# udp-public-address-v4: ''
  # UDP public address (ipv6)
# udp-public-address-v6: ''
  # Listen ipv6 only
  listen-ipv6-only: false
  # Bind source address (ipv4|ipv6)
  # It is overridden by bind-address-v{4,6} if specified
  bind-address: ''
  # Bind source address (ipv4)
  bind-address-v4: ''
  # Bind source address (ipv6)
  bind-address-v6: ''
  # Bind source network interface
  bind-interface: ''
  # Domain address type (ipv4|ipv6|unspec)
  domain-address-type: unspec
  # Socket mark (hex: 0x1, dec: 1, oct: 01)
  mark: 0
  # TCP fastopen
# tcp-fastopen: false

#auth:
# file: conf/auth.txt
# username:
# password:

#misc:
  # task stack size (bytes)
# task-stack-size: 8192
  # udp socket recv buffer (SO_RCVBUF) size (bytes)
# udp-recv-buffer-size: 524288
  # number of udp buffers in splice, 1500 bytes per buffer.
# udp-copy-buffer-nums: 10
  # TCP connect timeout (ms)
# connect-timeout: 10000
  # TCP read-write timeout (ms)
# tcp-read-write-timeout: 300000
  # UDP read-write timeout (ms)
# udp-read-write-timeout: 60000
  # stdout, stderr or file-path
# log-file: stderr
  # debug, info, warn or error
# log-level: warn
  # If present, run as a daemon with this pid file
# pid-file: /run/hev-socks5-server.pid
  # If present, set rlimit nofile; else use default value
# limit-nofile: 65535

Authentication file

<USERNAME> <SPACE> <PASSWORD> <SPACE> <MARK> <LF>

• USERNAME: A string of up to 255 characters
• PASSWORD: A string of up to 255 characters
• MARK: Hexadecimal

Run

bin/hev-socks5-server conf/main.yml

Live updating authentication file

Send signal SIGUSR1 to socks5 server process after the authentication file is updated.

killall -SIGUSR1 hev-socks5-server

Limit number of connections

For example, limit the number of connections for jerry up to 2:

Config

auth:
  file: conf/auth.txt

Auth file

jerry pass 1a

IPtables

iptables -A OUTPUT -p tcp --syn -m mark --mark 0x1a -m connlimit --connlimit-above 2 -j REJECT

OpenWrt 23.05+

Repo: https://github.com/openwrt/packages/tree/master/net/hev-socks5-server

# Install package
opkg install hev-socks5-server

# Edit /etc/config/hev-socks5-server

# Restart service
/etc/init.d/hev-socks5-server restart

API

/**
 * hev_socks5_server_main_from_file:
 * @config_path: config file path
 *
 * Start and run the socks5 server, this function will blocks until the
 * hev_socks5_server_quit is called or an error occurs.
 *
 * Returns: returns zero on successful, otherwise returns -1.
 *
 * Since: 2.6.7
 */
int hev_socks5_server_main_from_file (const char *config_path);

/**
 * hev_socks5_server_main_from_str:
 * @config_str: string config
 * @config_len: the byte length of string config
 *
 * Start and run the socks5 server, this function will blocks until the
 * hev_socks5_server_quit is called or an error occurs.
 *
 * Returns: returns zero on successful, otherwise returns -1.
 *
 * Since: 2.6.7
 */
int hev_socks5_server_main_from_str (const unsigned char *config_str,
                                     unsigned int config_len);

/**
 * hev_socks5_server_quit:
 *
 * Stop the socks5 server.
 *
 * Since: 2.6.7
 */
void hev_socks5_server_quit (void);

Use Cases

Android App

• Socks5

iOS App

• Socks5

Contributors

• ammar faizi - https://github.com/ammarfaizi2
• hev - https://hev.cc
• pexcn - [email protected]

License

MIT

[^1]: Windows is not supported at this time. [^2]: See protocol specification. The hev-socks5-tunnel and hev-socks5-tproxy clients support UDP relay over TCP.