include/netinet/tcp_fsm.h File Reference

Detailed Description

TCP state machine definitions.

Defines

#define TCP_NSTATES

Total number of possible states.

#define TCPS_CLOSED

closed

#define TCPS_LISTEN

listening for connection

#define TCPS_SYN_SENT

active, have sent syn

#define TCPS_SYN_RECEIVED

have sent and received syn

#define TCPS_ESTABLISHED

established

#define TCPS_CLOSE_WAIT

rcvd fin, waiting for close

#define TCPS_FIN_WAIT_1

have closed, sent fin

#define TCPS_CLOSING

closed xchd FIN; await FIN ACK

#define TCPS_LAST_ACK

had fin and close; await FIN ACK

#define TCPS_FIN_WAIT_2

have closed, fin is acked

#define TCPS_TIME_WAIT

in 2*msl quiet wait after close

Functions

void NutTcpStateMachine (NETBUF *nb)

Process incoming TCP segments.

int NutTcpInitStateMachine (void)

Start TCP state machine.

int NutTcpStatePassiveOpenEvent (TCPSOCKET *sock)

Initiated by the application.

int NutTcpStateActiveOpenEvent (TCPSOCKET *sock)

Initiated by the application.

int NutTcpStateCloseEvent (TCPSOCKET *sock)

Socket close by application.

int NutTcpStateWindowEvent (TCPSOCKET *sock)

Initiated by the application.

int NutTcpStateRetranTimeout (TCPSOCKET *sock)

Retransmit a segment after ACK timeout.