Contiki 3.x
Data Fields
uip_conn Struct Reference

Representation of a uIP TCP connection. More...

#include <core/net/ip/uip.h>

Data Fields

uip_ipaddr_t ripaddr
 The IP address of the remote host. More...
 
uint16_t lport
 The local TCP port, in network byte order. More...
 
uint16_t rport
 
 The local remote TCP port, in network byte

order. More...

 
uint8_t rcv_nxt [4]
 The sequence number that we expect to receive next. More...
 
uint8_t snd_nxt [4]
 The sequence number that was last sent by us. More...
 
uint16_t len
 Length of the data that was previously sent. More...
 
uint16_t mss
 
 Current maximum segment size for the

connection. More...

 
uint16_t initialmss
 
 Initial maximum segment size for the

connection. More...

 
uint8_t sa
 
 Retransmission time-out calculation state

variable. More...

 
uint8_t sv
 
 Retransmission time-out calculation state

variable. More...

 
uint8_t rto
 Retransmission time-out. More...
 
uint8_t tcpstateflags
 TCP state and flags. More...
 
uint8_t timer
 The retransmission timer. More...
 
uint8_t nrtx
 
 The number of retransmissions for the last

segment sent. More...

 
uip_tcp_appstate_t appstate
 The application state. More...
 

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 1336 of file uip.h.

Field Documentation

uip_tcp_appstate_t uip_conn::appstate

The application state.

Definition at line 1363 of file uip.h.

uint16_t uip_conn::initialmss

 Initial maximum segment size for the

connection.

Definition at line 1350 of file uip.h.

Referenced by uip_process().

uint16_t uip_conn::len

Length of the data that was previously sent.

Definition at line 1347 of file uip.h.

Referenced by uip_process().

uint16_t uip_conn::lport

The local TCP port, in network byte order.

Definition at line 1339 of file uip.h.

Referenced by uip_process().

uint16_t uip_conn::mss

 Current maximum segment size for the

connection.

Definition at line 1348 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 1359 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 1343 of file uip.h.

Referenced by uip_process().

uip_ipaddr_t uip_conn::ripaddr

The IP address of the remote host.

Definition at line 1337 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 1340 of file uip.h.

Referenced by uip_process().

uint8_t uip_conn::rto

Retransmission time-out.

Definition at line 1356 of file uip.h.

Referenced by uip_process().

uint8_t uip_conn::sa

 Retransmission time-out calculation state

variable.

Definition at line 1352 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 1345 of file uip.h.

Referenced by uip_process().

uint8_t uip_conn::sv

 Retransmission time-out calculation state

variable.

Definition at line 1354 of file uip.h.

Referenced by uip_process().

uint8_t uip_conn::tcpstateflags

TCP state and flags.

Definition at line 1357 of file uip.h.

Referenced by uip_process().

uint8_t uip_conn::timer

The retransmission timer.

Definition at line 1358 of file uip.h.

Referenced by uip_process().