socks5-client-linux

Socks5 client for linux with supporting of CONNECT and UDP_ASSOCIATE commands.

Methods of ProxyManager

bool connectToProxy(std::string ip, uint16_t port, std::string user, std::string password, Socks5::PROXY_MODE proxyMode, std::string dstIP = "", uint16_t dstPort = 0);

Connect to proxy-server.
Parameters:

• ip — IP address of proxy server.
• port — port of proxy server.
• user — login of proxy server or empty string if proxy without auth
• password — password of proxy server or empty string if proxy without auth
• proxyMode — mode of proxy. Socks5::PROXY_MODE::CONNECTION (TCP connect) or Socks5::PROXY_MODE::UDP_ASSOCIATE (UDP connect).
• dstIP — destination IP address (for CONNECTION mode).
• dstPort — destination port (for CONNECTION mode).

Return: true if successful, false if connect was failed.

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void closeConnection();

Close connection to proxy server.

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int32_t send(char* packet, uint16_t dataLength, std::string ip, uint16_t port);

Send data to destination server through proxy server.
Parameters:

• packet — pointer to data array.
• dataLength — length of data array.
• ip — destination IP address (for UDP_ASSOCIATE mode).
• port — destination port (for UDP_ASSOCIATE mode).

Return: length of sent data or -1 if error.

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int32_t send(char* packet, uint16_t dataLength, int32_t host = 0, uint16_t port = 0);

Send data to destination server through proxy server.
Parameters:

• packet — pointer to data array.
• dataLength — length of data array.
• host — destination host (binary format).
• port — destination port (for UDP_ASSOCIATE mode).

Return: length of sent data or -1 if error.

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int32_t read(char* data, uint16_t bufferSize, uint32_t* binAddres = 0, uint16_t* port = 0);

Read data from destination server through proxy server.
Parameters:

• data — pointer to data array
• bufferSize — maximum size of data array
• binAddres — pointer to variable for write destination host address (binary format, for UDP_ASSOCIATE mode).
• port — pointer to variable for write destination host port (for UDP_ASSOCIATE mode).

Return: length of recevied data or -1 if error.
Note: Proxy socket is non blocking for UDP_ASSOCIATE mode.

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int32_t udpSocketWait(uint32_t *waitMode, uint32_t timeout);

Waiting (with timeout) send or/and receive data. Only for UDP_ASSOCIATE mode.
Parameters:

• waitMode — pointer to bit-mask of waiting mode.
• timeout — timeout in mseconds.

Return: 0 if success, -1 if error.

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Socks5::PROXY_ERROR lastErrorCode();

Gets last error code.

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static std::string getErrorString(Socks5::PROXY_ERROR errorCode);

Gets error string by error code.
Parameters:

• errorCode — error code.

Return: error string

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static inline void setForceMainAddress(bool _isForceMainAddress);

Some proxy-server don`t adhere to RFC and give invalid address for udp asscotiation.
Therefore we must use main address forced in this cases.

Example

In example.cpp