C++ TIMEOUT函数代码示例

/*
 * np_up - a network protocol has come up.
 */
void
np_up(int unit, int proto)
{
    if (num_np_up == 0) {
	/*
	 * At this point we consider that the link has come up successfully.
	 */
	need_holdoff = 0;

	if (idle_time_limit > 0)
	    TIMEOUT(check_idle, NULL, idle_time_limit);

	/*
	 * Set a timeout to close the connection once the maximum
	 * connect time has expired.
	 */
	if (maxconnect > 0)
	    TIMEOUT(connect_time_expired, 0, maxconnect);

	/*
	 * Detach now, if the updetach option was given.
	 */
	if (nodetach == -1)
	    detach();
    }
    ++num_np_up;
}

/*
 * np_up - a network protocol has come up.
 */
void
np_up(int unit, u16_t proto)
{
  LWIP_UNUSED_ARG(unit);
  LWIP_UNUSED_ARG(proto);

  AUTHDEBUG((LOG_INFO, "np_up: %d proto=%X\n", unit, proto));
  if (num_np_up == 0) {
    AUTHDEBUG((LOG_INFO, "np_up: maxconnect=%d idle_time_limit=%d\n",ppp_settings.maxconnect,ppp_settings.idle_time_limit));
    /*
     * At this point we consider that the link has come up successfully.
     */
    if (ppp_settings.idle_time_limit > 0) {
      TIMEOUT(check_idle, NULL, ppp_settings.idle_time_limit);
    }

    /*
     * Set a timeout to close the connection once the maximum
     * connect time has expired.
     */
    if (ppp_settings.maxconnect > 0) {
      TIMEOUT(connect_time_expired, 0, ppp_settings.maxconnect);
    }
  }
  ++num_np_up;
}

/**
 * Send a new command to the modem.
 *
 * @param cmd - Pointer to the command
 * @param eol - Optional EOL char
 * @param timeout - Timeout of the operation in milliseconds.
 */
static void gprs_command_timeout(gprs_t * gprs,const char * cmd,u8_t eol,u32_t timeout)
{
#if GPRS_COMMAND_DELAY
	u32_t delay = sys_now() - gprs->commandTime;
#endif

	gprs->sentCommand = cmd;

#if GPRS_COMMAND_DELAY
	if (delay < GPRS_COMMAND_DELAY)
	{
		delay = GPRS_COMMAND_DELAY - delay;
		timeout += delay;
		TIMEOUT(timeout);
		modem_set_state(gprs,MODEM_STATE_NONE);
		//LWIP_DEBUGF(GPRS_DEBUG,("gprs_command_timeout: Delayed %lu milliseconds\n",delay));
		TIMEOUT1(delay);
		gprs->delayedCommand = cmd;
		gprs->delayedEol = eol;

	}
	else
	{
		TIMEOUT(timeout);
		modem_set_state(gprs,MODEM_STATE_ECHO);
		gprs_raw_send(gprs,cmd,eol);
	}
#else
	TIMEOUT(timeout);
	modem_set_state(gprs,MODEM_STATE_ECHO);
	gprs_raw_send(gprs,cmd,eol);

#endif
}

/*
 * upap_sauthreq - Send an Authenticate-Request.
 */
static void
upap_sauthreq(upap_state *u)
{
  u_char *outp;
  int outlen;

  outlen = UPAP_HEADERLEN + 2 * sizeof (u_char) 
         + u->us_userlen + u->us_passwdlen;
  outp = outpacket_buf[u->us_unit];

  MAKEHEADER(outp, PPP_PAP);

  PUTCHAR(UPAP_AUTHREQ, outp);
  PUTCHAR(++u->us_id, outp);
  PUTSHORT(outlen, outp);
  PUTCHAR(u->us_userlen, outp);
  BCOPY(u->us_user, outp, u->us_userlen);
  INCPTR(u->us_userlen, outp);
  PUTCHAR(u->us_passwdlen, outp);
  BCOPY(u->us_passwd, outp, u->us_passwdlen);

  pppWrite(u->us_unit, outpacket_buf[u->us_unit], outlen + PPP_HDRLEN);

  UPAPDEBUG((LOG_INFO, "pap_sauth: Sent id %d\n", u->us_id));

  TIMEOUT(upap_timeout, u, u->us_timeouttime);
  ++u->us_transmits;
  u->us_clientstate = UPAPCS_AUTHREQ;
}

/*
 * fsm_rtermreq - Receive Terminate-Req.
 */
static void fsm_rtermreq(fsm *f, int id, u_char *p, int len) {
    ppp_pcb *pcb = f->pcb;

    switch (f->state) {
    case PPP_FSM_ACKRCVD:
    case PPP_FSM_ACKSENT:
	f->state = PPP_FSM_REQSENT;		/* Start over but keep trying */
	break;

    case PPP_FSM_OPENED:
	if (len > 0) {
	    ppp_info("%s terminated by peer (%0.*v)", PROTO_NAME(f), len, p);
	} else
	    ppp_info("%s terminated by peer", PROTO_NAME(f));
	f->retransmits = 0;
	f->state = PPP_FSM_STOPPING;
	if (f->callbacks->down)
	    (*f->callbacks->down)(f);	/* Inform upper layers */
	TIMEOUT(fsm_timeout, f, pcb->settings.fsm_timeout_time);
	break;
    default:
	break;
    }

    fsm_sdata(f, TERMACK, id, NULL, 0);
}

/* ARGSUSED */
static void
ChapSendResponse(
    chap_state *cstate)
{
    u_char *outp;
    int outlen, md_len, name_len;

    md_len = cstate->resp_length;
    name_len = strlen(cstate->resp_name);
    outlen = CHAP_HEADERLEN + sizeof (u_char) + md_len + name_len;
    outp = outpacket_buf;

    MAKEHEADER(outp, PPP_CHAP);

    PUTCHAR(CHAP_RESPONSE, outp);	/* we are a response */
    PUTCHAR(cstate->resp_id, outp);	/* copy id from challenge packet */
    PUTSHORT(outlen, outp);		/* packet length */

    PUTCHAR(md_len, outp);		/* length of MD */
    BCOPY(cstate->response, outp, md_len);	/* copy MD to buffer */
    INCPTR(md_len, outp);

    BCOPY(cstate->resp_name, outp, name_len); /* append our name */

    /* send the packet */
    output(cstate->unit, outpacket_buf, outlen + PPP_HDRLEN);

    cstate->clientstate = CHAPCS_RESPONSE;
    TIMEOUT(ChapResponseTimeout, cstate, cstate->timeouttime);
    ++cstate->resp_transmits;
}

/*
 * ChapSendChallenge - Send an Authenticate challenge.
 */
static void
ChapSendChallenge(
    chap_state *cstate)
{
    u_char *outp;
    int chal_len, name_len;
    int outlen;

    chal_len = cstate->chal_len;
    name_len = strlen(cstate->chal_name);
    outlen = CHAP_HEADERLEN + sizeof (u_char) + chal_len + name_len;
    outp = outpacket_buf;

    MAKEHEADER(outp, PPP_CHAP);		/* paste in a CHAP header */

    PUTCHAR(CHAP_CHALLENGE, outp);
    PUTCHAR(cstate->chal_id, outp);
    PUTSHORT(outlen, outp);

    PUTCHAR(chal_len, outp);		/* put length of challenge */
    BCOPY(cstate->challenge, outp, chal_len);
    INCPTR(chal_len, outp);

    BCOPY(cstate->chal_name, outp, name_len);	/* append hostname */

    output(cstate->unit, outpacket_buf, outlen + PPP_HDRLEN);

    TIMEOUT(ChapChallengeTimeout, cstate, cstate->timeouttime);
    ++cstate->chal_transmits;
}

/*
 * fsm_rtermreq - Receive Terminate-Req.
 */
static void
fsm_rtermreq(fsm *f, int id, u_char *p, int len)
{
    char str[80];

    FSMDEBUG((LOG_INFO, "fsm_rtermreq(%s): Rcvd id %d.",
	      PROTO_NAME(f), id));

    switch (f->state) {
    case ACKRCVD:
    case ACKSENT:
	f->state = REQSENT;		/* Start over but keep trying */
	break;

    case OPENED:
	if (len > 0) {
	    fmtmsg(str, sizeof(str), "%0.*v", len, p);
	    syslog(LOG_INFO, "%s terminated by peer (%s)", PROTO_NAME(f), str);
	} else
	    syslog(LOG_INFO, "%s terminated by peer", PROTO_NAME(f));
	if (f->callbacks->down)
	    (*f->callbacks->down)(f);	/* Inform upper layers */
	f->retransmits = 0;
	f->state = STOPPING;
	TIMEOUT(fsm_timeout, f, f->timeouttime);
	break;
    }

    fsm_sdata(f, TERMACK, id, NULL, 0);
}

/*
 * fsm_rtermreq - Receive Terminate-Req.
 */
static void
fsm_rtermreq(fsm *f, int id, u_char *p, int len)
{
  LWIP_UNUSED_ARG(p);

  FSMDEBUG(LOG_INFO, ("fsm_rtermreq(%s): Rcvd id %d state=%d (%s)\n",
        PROTO_NAME(f), id, f->state, ppperr_strerr[f->state]));

  switch (f->state) {
    case LS_ACKRCVD:
    case LS_ACKSENT:
      f->state = LS_REQSENT;    /* Start over but keep trying */
      break;

    case LS_OPENED:
      if (len > 0) {
        FSMDEBUG(LOG_INFO, ("%s terminated by peer (%p)\n", PROTO_NAME(f), p));
      } else {
        FSMDEBUG(LOG_INFO, ("%s terminated by peer\n", PROTO_NAME(f)));
      }
      if (f->callbacks->down) {
        (*f->callbacks->down)(f);  /* Inform upper layers */
      }
      f->retransmits = 0;
      f->state = LS_STOPPING;
      TIMEOUT(fsm_timeout, f, f->timeouttime);
      break;
  }

  fsm_sdata(f, TERMACK, (u_char)id, NULL, 0);
}

/*
 * upap_sauthreq - Send an Authenticate-Request.
 */
static void upap_sauthreq(ppp_pcb *pcb) {
    struct pbuf *p;
    u_char *outp;
    int outlen;

    outlen = UPAP_HEADERLEN + 2 * sizeof (u_char) +
             pcb->upap.us_userlen + pcb->upap.us_passwdlen;
    p = pbuf_alloc(PBUF_RAW, (u16_t)(PPP_HDRLEN +outlen), PPP_CTRL_PBUF_TYPE);
    if(NULL == p)
        return;
    if(p->tot_len != p->len) {
        pbuf_free(p);
        return;
    }

    outp = (u_char*)p->payload;
    MAKEHEADER(outp, PPP_PAP);

    PUTCHAR(UPAP_AUTHREQ, outp);
    PUTCHAR(++pcb->upap.us_id, outp);
    PUTSHORT(outlen, outp);
    PUTCHAR(pcb->upap.us_userlen, outp);
    MEMCPY(outp, pcb->upap.us_user, pcb->upap.us_userlen);
    INCPTR(pcb->upap.us_userlen, outp);
    PUTCHAR(pcb->upap.us_passwdlen, outp);
    MEMCPY(outp, pcb->upap.us_passwd, pcb->upap.us_passwdlen);

    ppp_write(pcb, p);

    TIMEOUT(upap_timeout, pcb, pcb->settings.pap_timeout_time);
    ++pcb->upap.us_transmits;
    pcb->upap.us_clientstate = UPAPCS_AUTHREQ;
}

/*
 * fsm_rtermreq - Receive Terminate-Req.
 */
static void
fsm_rtermreq(
    fsm *f,
    int id,
    u_char *p,
    int len)
{
    switch (f->state) {
    case ACKRCVD:
    case ACKSENT:
	f->state = REQSENT;		/* Start over but keep trying */
	break;

    case OPENED:
	if (len > 0) {
	    info("%s terminated by peer (%0.*v)", PROTO_NAME(f), len, p);
	} else
	    info("%s terminated by peer", PROTO_NAME(f));
	if (f->callbacks->down)
	    (*f->callbacks->down)(f);	/* Inform upper layers */
	f->retransmits = 0;
	f->state = STOPPING;
	TIMEOUT(fsm_timeout, f, f->timeouttime);
	break;
    }

    fsm_sdata(f, TERMACK, id, NULL, 0);
}

/**
 * Handle timeout
 */
static void gprs_timeout(void * arg)
{
    gprs_t * gprs = (gprs_t *)arg;


    switch (gprs->state)
    {
        default:
            LWIP_DEBUGF(GPRS_DEBUG,("gprs: Timeout state %d\n",gprs->state));
            gprs_do_start(gprs);
            break;

        case GPRS_STATE_MODEM_OFF:
            gprs_arch_modem_on(gprs->device);
            LWIP_DEBUGF(GPRS_DEBUG,("gprs: set modem on\n"));
            TIMEOUT(GPRS_MODEM_ON_DELAY);
            gprs_set_state(gprs,GPRS_STATE_MODEM_ON);
            break;

        case GPRS_STATE_MODEM_ON:
        case GPRS_STATE_MODEM_WAKEUP:
            do_modem_wakeup(gprs);
            break;

        case GPRS_STATE_MODEM_ALIVE:
        	do_modem_alive(gprs);
        	break;



    }
}

/*
 * terminate_layer - Start process of shutting down the FSM
 *
 * Cancel any timeout running, notify upper layers we're done, and
 * send a terminate-request message as configured.
 */
static void terminate_layer(fsm *f, int nextstate) {
    ppp_pcb *pcb = f->pcb;

    if( f->state != PPP_FSM_OPENED )
	UNTIMEOUT(fsm_timeout, f);	/* Cancel timeout */
    else if( f->callbacks->down )
	(*f->callbacks->down)(f);	/* Inform upper layers we're down */

    /* Init restart counter and send Terminate-Request */
    f->retransmits = pcb->settings.fsm_max_term_transmits;
    fsm_sdata(f, TERMREQ, f->reqid = ++f->id,
	      (const u_char *) f->term_reason, f->term_reason_len);

    if (f->retransmits == 0) {
	/*
	 * User asked for no terminate requests at all; just close it.
	 * We've already fired off one Terminate-Request just to be nice
	 * to the peer, but we're not going to wait for a reply.
	 */
	f->state = nextstate == PPP_FSM_CLOSING ? PPP_FSM_CLOSED : PPP_FSM_STOPPED;
	if( f->callbacks->finished )
	    (*f->callbacks->finished)(f);
	return;
    }

    TIMEOUT(fsm_timeout, f, pcb->settings.fsm_timeout_time);
    --f->retransmits;

    f->state = nextstate;
}

/*
 * chap_timeout - It's time to send another challenge to the peer.
 * This could be either a retransmission of a previous challenge,
 * or a new challenge to start re-authentication.
 */
static void chap_timeout(void *arg) {
	ppp_pcb *pcb = (ppp_pcb*)arg;
	struct pbuf *p;

	pcb->chap_server.flags &= ~TIMEOUT_PENDING;
	if ((pcb->chap_server.flags & CHALLENGE_VALID) == 0) {
		pcb->chap_server.challenge_xmits = 0;
		chap_generate_challenge(pcb);
		pcb->chap_server.flags |= CHALLENGE_VALID;
	} else if (pcb->chap_server.challenge_xmits >= pcb->settings.chap_max_transmits) {
		pcb->chap_server.flags &= ~CHALLENGE_VALID;
		pcb->chap_server.flags |= AUTH_DONE | AUTH_FAILED;
		auth_peer_fail(pcb, PPP_CHAP);
		return;
	}

	p = pbuf_alloc(PBUF_RAW, (u16_t)(pcb->chap_server.challenge_pktlen), PPP_CTRL_PBUF_TYPE);
	if(NULL == p)
		return;
	if(p->tot_len != p->len) {
		pbuf_free(p);
		return;
	}
	MEMCPY(p->payload, pcb->chap_server.challenge, pcb->chap_server.challenge_pktlen);
	ppp_write(pcb, p);
	++pcb->chap_server.challenge_xmits;
	pcb->chap_server.flags |= TIMEOUT_PENDING;
	TIMEOUT(chap_timeout, arg, pcb->settings.chap_timeout_time);
}

/*
 * fsm_timeout - Timeout expired.
 */
static void
fsm_timeout(void *arg)
{
  fsm *f = (fsm *) arg;

  switch (f->state) {
    case LS_CLOSING:
    case LS_STOPPING:
      if( f->retransmits <= 0 ) {
        FSMDEBUG(LOG_WARNING, ("%s: timeout sending Terminate-Request state=%d (%s)\n",
             PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
        /*
         * We've waited for an ack long enough.  Peer probably heard us.
         */
        f->state = (f->state == LS_CLOSING)? LS_CLOSED: LS_STOPPED;
        if( f->callbacks->finished ) {
          (*f->callbacks->finished)(f);
        }
      } else {
        FSMDEBUG(LOG_WARNING, ("%s: timeout resending Terminate-Requests state=%d (%s)\n",
             PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
        /* Send Terminate-Request */
        fsm_sdata(f, TERMREQ, f->reqid = ++f->id,
            (u_char *) f->term_reason, f->term_reason_len);
        TIMEOUT(fsm_timeout, f, f->timeouttime);
        --f->retransmits;
      }
      break;

    case LS_REQSENT:
    case LS_ACKRCVD:
    case LS_ACKSENT:
      if (f->retransmits <= 0) {
        FSMDEBUG(LOG_WARNING, ("%s: timeout sending Config-Requests state=%d (%s)\n",
         PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
        f->state = LS_STOPPED;
        if( (f->flags & OPT_PASSIVE) == 0 && f->callbacks->finished ) {
          (*f->callbacks->finished)(f);
        }
      } else {
        FSMDEBUG(LOG_WARNING, ("%s: timeout resending Config-Request state=%d (%s)\n",
         PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
        /* Retransmit the configure-request */
        if (f->callbacks->retransmit) {
          (*f->callbacks->retransmit)(f);
        }
        fsm_sconfreq(f, 1);    /* Re-send Configure-Request */
        if( f->state == LS_ACKRCVD ) {
          f->state = LS_REQSENT;
        }
      }
      break;

    default:
      FSMDEBUG(LOG_INFO, ("%s: UNHANDLED timeout event in state %d (%s)!\n",
          PROTO_NAME(f), f->state, ppperr_strerr[f->state]));
  }
}