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a8b7513df9
Previously dead peer detection timer was scheduled every dpd_interval, added dpd_interval to all of the clients timestamp and if timestamp was larger than client hearbeat interval * 1.2 then check if client sent some message. If so, flag was reset. This method was source of number of problems so instead different method is now used. Every single client has its own timer with timeout based on (configurable) dpd_interval_coefficient and multiplied with client heartbeat timeout. When message is received from client timer is rescheduled. When timer callback is called (= client doesn't sent message during timeout) then client is disconnected. Signed-off-by: Jan Friesse <jfriesse@redhat.com>
61 lines
2.3 KiB
C
61 lines
2.3 KiB
C
/*
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* Copyright (c) 2015-2020 Red Hat, Inc.
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*
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* All rights reserved.
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*
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* Author: Jan Friesse (jfriesse@redhat.com)
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*
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* This software licensed under BSD license, the text of which follows:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of the Red Hat, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _QNETD_CLIENT_DPD_TIMER_H_
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#define _QNETD_CLIENT_DPD_TIMER_H_
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#include "qnetd-instance.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern int qnetd_client_dpd_timer_init(struct qnetd_instance *instance,
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struct qnetd_client *client);
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extern void qnetd_client_dpd_timer_destroy(struct qnetd_instance *instance,
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struct qnetd_client *client);
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extern void qnetd_client_dpd_timer_reschedule(struct qnetd_instance *instance,
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struct qnetd_client *client);
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extern int qnetd_client_dpd_timer_update_interval(struct qnetd_instance *instance,
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struct qnetd_client *client);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _QNETD_CLIENT_DPD_TIMER_H_ */
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