lws-retry.h

/*
 * libwebsockets - small server side websockets and web server implementation
 *
 * Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */
 
typedef struct lws_retry_bo {
        const uint32_t  *retry_ms_table;           /* base delay in ms */
        uint16_t        retry_ms_table_count;      /* entries in table */
        uint16_t        conceal_count;             /* max retries to conceal */
        uint16_t        secs_since_valid_ping;     /* idle before PING issued */
        uint16_t        secs_since_valid_hangup;   /* idle before hangup conn */
        uint8_t         jitter_percent;         /* % additional random jitter */
} lws_retry_bo_t;
 
#define LWS_RETRY_CONCEAL_ALWAYS (0xffff)
 
LWS_VISIBLE LWS_EXTERN unsigned int
lws_retry_get_delay_ms(struct lws_context *context, const lws_retry_bo_t *retry,
                       uint16_t *ctry, char *conceal);
 
LWS_VISIBLE LWS_EXTERN int
lws_retry_sul_schedule(struct lws_context *context, int tid,
                       lws_sorted_usec_list_t *sul, const lws_retry_bo_t *retry,
                       sul_cb_t cb, uint16_t *ctry);
 
LWS_VISIBLE LWS_EXTERN int
lws_retry_sul_schedule_retry_wsi(struct lws *wsi, lws_sorted_usec_list_t *sul,
                                 sul_cb_t cb, uint16_t *ctry);