williamr@2: /* TCP_FSM.H williamr@2: * williamr@2: * Portions copyright (c) 1997-1999 Symbian Ltd. All rights reserved. williamr@2: */ williamr@2: williamr@2: /* williamr@2: * Copyright (c) 1982, 1986 Regents of the University of California. williamr@2: * All rights reserved. The Berkeley software License Agreement williamr@2: * specifies the terms and conditions for redistribution. williamr@2: */ williamr@2: williamr@2: /** @file williamr@2: @publishedAll williamr@2: @released williamr@2: */ williamr@2: williamr@2: /* williamr@2: * TCP FSM state definitions. williamr@2: * Per RFC793, September, 1981. williamr@2: */ williamr@2: williamr@2: #ifndef _NETINET_TCP_FSM_H williamr@2: #define _NETINET_TCP_FSM_H williamr@2: williamr@2: #ifdef __cplusplus williamr@2: extern "C" { williamr@2: #endif williamr@2: williamr@2: #define TCP_NSTATES 11 williamr@2: williamr@2: #define TCPS_CLOSED 0 /* closed */ williamr@2: #define TCPS_LISTEN 1 /* listening for connection */ williamr@2: #define TCPS_SYN_SENT 2 /* active, have sent syn */ williamr@2: #define TCPS_SYN_RECEIVED 3 /* have send and received syn */ williamr@2: /** williamr@2: states < TCPS_ESTABLISHED are those where connections not established williamr@2: */ williamr@2: #define TCPS_ESTABLISHED 4 /* established */ williamr@2: #define TCPS_CLOSE_WAIT 5 /* rcvd fin, waiting for close */ williamr@2: williamr@2: /** williamr@2: states > TCPS_CLOSE_WAIT are those where user has closed williamr@2: */ williamr@2: #define TCPS_FIN_WAIT_1 6 /* have closed, sent fin */ williamr@2: #define TCPS_CLOSING 7 /* closed xchd FIN; await FIN ACK */ williamr@2: #define TCPS_LAST_ACK 8 /* had fin and close; await FIN ACK */ williamr@2: williamr@2: /** williamr@2: states > TCPS_CLOSE_WAIT && < TCPS_FIN_WAIT_2 await ACK of FIN williamr@2: */ williamr@2: #define TCPS_FIN_WAIT_2 9 /* have closed, fin is acked */ williamr@2: #define TCPS_TIME_WAIT 10 /* in 2*msl quiet wait after close */ williamr@2: williamr@2: #define TCPS_HAVERCVDSYN(s) ((s) >= TCPS_SYN_RECEIVED) williamr@2: #define TCPS_HAVERCVDFIN(s) ((s) >= TCPS_TIME_WAIT) williamr@2: williamr@2: #ifdef TCPOUTFLAGS williamr@2: /** williamr@2: Flags used when sending segments in tcp_output. williamr@2: Basic flags (TH_RST,TH_ACK,TH_SYN,TH_FIN) are totally williamr@2: determined by state, with the proviso that TH_FIN is sent only williamr@2: if all data queued for output is included in the segment. williamr@2: */ williamr@2: const u_char tcp_outflags[TCP_NSTATES] = { williamr@2: TH_RST|TH_ACK, 0, TH_SYN, TH_SYN|TH_ACK, williamr@2: TH_ACK, TH_ACK, williamr@2: TH_FIN|TH_ACK, TH_FIN|TH_ACK, TH_FIN|TH_ACK, TH_ACK, TH_ACK, williamr@2: }; williamr@2: #endif williamr@2: williamr@2: #ifdef TCPSTATES williamr@2: williamr@2: const char *tcpstates[] = { williamr@2: "CLOSED", "LISTEN", "SYN_SENT", "SYN_RCVD", williamr@2: "ESTABLISHED", "CLOSE_WAIT", "FIN_WAIT_1", "CLOSING", williamr@2: "LAST_ACK", "FIN_WAIT_2", "TIME_WAIT", williamr@2: }; williamr@2: #endif williamr@2: williamr@2: #ifdef __cplusplus williamr@2: } williamr@2: #endif williamr@2: williamr@2: #endif /* _NETINET_TCP_FSM_H */