uip_conn Struct Reference

Representation of a uIP TCP connection. More...

#include <core/net/uip.h>

Data Fields
uip_ipaddr_t	ripaddr
	The IP address of the remote host.
uint16_t	lport
	The local TCP port, in network byte order.
uint16_t	rport
	The local remote TCP port, in network byte order.
uint8_t	rcv_nxt [4]
	The sequence number that we expect to receive next.
uint8_t	snd_nxt [4]
	The sequence number that was last sent by us.
uint16_t	len
	Length of the data that was previously sent.
uint16_t	mss
	Current maximum segment size for the connection.
uint16_t	initialmss
	Initial maximum segment size for the connection.
uint8_t	sa
	Retransmission time-out calculation state variable.
uint8_t	sv
	Retransmission time-out calculation state variable.
uint8_t	rto
	Retransmission time-out.
uint8_t	tcpstateflags
	TCP state and flags.
uint8_t	timer
	The retransmission timer.
uint8_t	nrtx
	The number of retransmissions for the last segment sent.
uip_tcp_appstate_t	appstate
	The application state.

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Detailed Description

Representation of a uIP TCP connection.

The uip_conn structure is used for identifying a connection. All but one field in the structure are to be considered read-only by an application. The only exception is the appstate field whose purpose is to let the application store application-specific state (e.g., file pointers) for the connection. The type of this field is configured in the "uipopt.h" header file.

Definition at line 1291 of file uip.h.

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Field Documentation

uip_tcp_appstate_t uip_conn::appstate

The application state.

Definition at line 1318 of file uip.h.

uint16_t uip_conn::initialmss

Initial maximum segment size for the connection.

Definition at line 1305 of file uip.h.

Referenced by uip_process().

uint16_t uip_conn::len

Length of the data that was previously sent.

Definition at line 1302 of file uip.h.

Referenced by uip_process().

uint16_t uip_conn::lport

The local TCP port, in network byte order.

Definition at line 1294 of file uip.h.

Referenced by uip_process().

uint16_t uip_conn::mss

Current maximum segment size for the connection.

Definition at line 1303 of file uip.h.

Referenced by uip_process().

uint8_t uip_conn::nrtx

The number of retransmissions for the last segment sent.

Definition at line 1314 of file uip.h.

Referenced by uip_process().

uint8_t uip_conn::rcv_nxt[4]

The sequence number that we expect to receive next.

Definition at line 1298 of file uip.h.

Referenced by uip_process().

uip_ipaddr_t uip_conn::ripaddr

The IP address of the remote host.

Definition at line 1292 of file uip.h.

Referenced by uip_process().

uint16_t uip_conn::rport

The local remote TCP port, in network byte order.

Definition at line 1295 of file uip.h.

Referenced by uip_process().

uint8_t uip_conn::rto

Retransmission time-out.

Definition at line 1311 of file uip.h.

Referenced by uip_process().

uint8_t uip_conn::sa

Retransmission time-out calculation state variable.

Definition at line 1307 of file uip.h.

Referenced by uip_process().

uint8_t uip_conn::snd_nxt[4]

The sequence number that was last sent by us.

Definition at line 1300 of file uip.h.

Referenced by uip_process().

uint8_t uip_conn::sv

Retransmission time-out calculation state variable.

Definition at line 1309 of file uip.h.

Referenced by uip_process().

uint8_t uip_conn::tcpstateflags

TCP state and flags.

Definition at line 1312 of file uip.h.

Referenced by uip_init(), and uip_process().

uint8_t uip_conn::timer

The retransmission timer.

Definition at line 1313 of file uip.h.

Referenced by uip_process().