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#pragma once
#include <cstdint>
#include <thread>
/**
* \ingroup pbc
* \defgroup pbc_sock Socket
* \brief TCP socket handling
* \{
*/
/**
* \brief Asynchronous puzzle box socket connection
* \note Once connected, this class will call \c i2c_recv() when a complete I2C
* message has been received
*/
class PBSocket {
public:
PBSocket();
PBSocket(const char * addr, uint16_t port);
virtual ~PBSocket();
//! Configure target server
void set_server(const char * addr, uint16_t port);
//! Attempt to connect to server and start \c sock_task() in a thread
void sock_connect();
/**
* \brief Send data over the TCP connection
*
* \param buf Data to send
* \param buf_sz Size of \p buf in bytes
*/
void send(const char * buf, size_t buf_sz);
private:
/**
* \brief Continously read from the TCP socket and read \ref i2ctcp messages
* using \c i2ctcp_read().
*
* Once a complete message has been parsed, \c i2c_recv() is called with the
* complete message. This message is automatically free'd after \c i2c_recv()
* returns.
*
* \note This function is run in a separate thread
*/
void sock_task();
//! Close the socket
void sock_close();
//! Pointer to thread running \c sock_task()
std::thread* _thread = nullptr;
/**
* \brief IP address of server to connect to
*
* \note This member must contain an IP address, as no hostname resolution is
* done in pbc.
*/
const char * _addr = NULL;
//! Port number of server to connect to
uint16_t _port = 0;
//! Unix file descriptor of opened socket
int _fd = -1;
};
//! Singleton \c PBSocket instance
extern PBSocket* sock;
/// \}
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