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/*
* ConnectionState.h
*
* Created on: 25 Dec 2016
* Author: David
*/
#ifndef SRC_DUET_CONNECTIONSTATE_H_
#define SRC_DUET_CONNECTIONSTATE_H_
#include <NetworkDefs.h>
#include "RepRapFirmware.h"
class tcp_pcb;
// ConnectionState structure that we use to track TCP connections. It is usually combined with NetworkTransactions.
struct ConnectionState
{
tcp_pcb *volatile pcb; // Connection PCB
uint16_t localPort, remotePort; // Copy of the local and remote ports, because the PCB may be unavailable
uint32_t remoteIPAddress; // Same for the remote IP address
NetworkTransaction * volatile sendingTransaction; // NetworkTransaction that is currently sending via this connection
ConnectionState * volatile next; // Next ConnectionState in this list
bool persistConnection; // Do we expect this connection to stay alive?
volatile bool isTerminated; // Will be true if the connection has gone down unexpectedly (TCP RST)
void Init(tcp_pcb *p);
uint16_t GetLocalPort() const { return localPort; }
uint32_t GetRemoteIP() const { return remoteIPAddress; }
uint16_t GetRemotePort() const { return remotePort; }
bool IsConnected() const { return pcb != nullptr; }
bool IsTerminated() const { return isTerminated; }
void Terminate();
};
#endif /* SRC_DUET_CONNECTIONSTATE_H_ */
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