TcpConn Struct Reference

A single TCP connection context. More...

#include <transport.h>

Public Attributes
uint8_t	id
	Fixed slot index (0 … MAX_CONNS-1).
volatile ConnState	state
	Lifecycle state; volatile for inter-task visibility.
struct tcp_pcb *	pcb
	lwIP PCB; null when slot is free.
uint32_t	last_activity_ms
	millis() timestamp of last TX/RX event.
uint8_t	rx_buffer [RX_BUF_SIZE]
	Ring buffer storage.
volatile size_t	rx_head
	Producer write index (lwIP context).
volatile size_t	rx_tail
	Consumer read index (main-loop context).

Detailed Description

A single TCP connection context.

Sized so that MAX_CONNS instances fit in a static array without fragmentation. All fields except the volatile ring-buffer indices may only be accessed from the Arduino main-loop task.

Definition at line 68 of file transport.h.

Member Data Documentation

id

uint8_t TcpConn::id

Fixed slot index (0 … MAX_CONNS-1).

Definition at line 70 of file transport.h.

Referenced by DeterministicAsyncTCP::init().

state

volatile ConnState TcpConn::state

Lifecycle state; volatile for inter-task visibility.

Definition at line 71 of file transport.h.

Referenced by DeterministicAsyncTCP::check_timeouts(), DeterministicAsyncTCP::init(), DetWebServer::send(), DetWebServer::send_empty(), sse_write(), DeterministicAsyncTCP::stop(), ws_parse(), and ws_send_frame().

pcb

struct tcp_pcb* TcpConn::pcb

lwIP PCB; null when slot is free.

Definition at line 72 of file transport.h.

Referenced by DeterministicAsyncTCP::check_timeouts(), DetWebServer::send(), DetWebServer::send_empty(), sse_write(), DeterministicAsyncTCP::stop(), ws_close(), ws_parse(), and ws_send_frame().

last_activity_ms

uint32_t TcpConn::last_activity_ms

millis() timestamp of last TX/RX event.

Definition at line 73 of file transport.h.

Referenced by DeterministicAsyncTCP::check_timeouts().

rx_buffer

uint8_t TcpConn::rx_buffer[RX_BUF_SIZE]

Ring buffer storage.

Definition at line 75 of file transport.h.

Referenced by http_parse(), and ws_parse().

rx_head

volatile size_t TcpConn::rx_head

Producer write index (lwIP context).

Definition at line 76 of file transport.h.

Referenced by http_parse(), and ws_parse().

rx_tail

volatile size_t TcpConn::rx_tail

Consumer read index (main-loop context).

Definition at line 77 of file transport.h.

Referenced by http_parse(), and ws_parse().

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The documentation for this struct was generated from the following file:

• src/network_drivers/transport.h