mirror of
https://github.com/zotanmew/nginx-rtmp-module.git
synced 2024-05-10 14:31:07 +02:00
751 lines
25 KiB
C
751 lines
25 KiB
C
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/*
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* Copyright (C) Sergey Dryabzhinsky, 2016
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*
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* Based on http://permalink.gmane.org/gmane.comp.web.flash.red5/5869
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* And live & stat modules
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*/
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#include <ngx_config.h>
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#include <ngx_core.h>
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#include "ngx_rtmp_bandwidth_detection_module.h"
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#include "ngx_rtmp_live_module.h"
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#include "ngx_rtmp_cmd_module.h"
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#include "ngx_rtmp_transitions.h"
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#define NGX_RTMP_BANDWIDTH_DETECTION_PAYLOAD_LENGTH 16*1024
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static ngx_rtmp_connect_pt next_connect;
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static ngx_int_t ngx_rtmp_bandwidth_detection_postconfiguration(ngx_conf_t *cf);
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static void * ngx_rtmp_bandwidth_detection_create_app_conf(ngx_conf_t *cf);
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static char * ngx_rtmp_bandwidth_detection_merge_app_conf(ngx_conf_t *cf,
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void *parent, void *child);
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static char *ngx_rtmp_bandwidth_detection_set_msec_slot(ngx_conf_t *cf, ngx_command_t *cmd,
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void *conf);
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static ngx_int_t ngx_rtmp_bandwidth_detection_start(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h, ngx_chain_t *in);
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static ngx_int_t ngx_rtmp_bandwidth_detection_check_result(ngx_rtmp_session_t *s);
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static u_char *payload; // Payload data for all
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static ngx_command_t ngx_rtmp_bandwidth_detection_commands[] = {
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{ ngx_string("bw_auto_start"),
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NGX_RTMP_MAIN_CONF|NGX_RTMP_SRV_CONF|NGX_RTMP_APP_CONF|NGX_CONF_TAKE1,
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ngx_conf_set_flag_slot,
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NGX_RTMP_APP_CONF_OFFSET,
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offsetof(ngx_rtmp_bandwidth_detection_app_conf_t, auto_start),
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NULL },
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{ ngx_string("bw_auto_sense"),
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NGX_RTMP_MAIN_CONF|NGX_RTMP_SRV_CONF|NGX_RTMP_APP_CONF|NGX_CONF_TAKE1,
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ngx_conf_set_flag_slot,
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NGX_RTMP_APP_CONF_OFFSET,
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offsetof(ngx_rtmp_bandwidth_detection_app_conf_t, auto_sense),
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NULL },
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{ ngx_string("bw_latency_min"),
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NGX_RTMP_MAIN_CONF|NGX_RTMP_SRV_CONF|NGX_RTMP_APP_CONF|NGX_CONF_TAKE1,
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ngx_rtmp_bandwidth_detection_set_msec_slot,
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NGX_RTMP_APP_CONF_OFFSET,
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offsetof(ngx_rtmp_bandwidth_detection_app_conf_t, latency_min),
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NULL },
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{ ngx_string("bw_latency_max"),
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NGX_RTMP_MAIN_CONF|NGX_RTMP_SRV_CONF|NGX_RTMP_APP_CONF|NGX_CONF_TAKE1,
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ngx_rtmp_bandwidth_detection_set_msec_slot,
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NGX_RTMP_APP_CONF_OFFSET,
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offsetof(ngx_rtmp_bandwidth_detection_app_conf_t, latency_max),
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NULL },
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{ ngx_string("bw_latency_undef"),
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NGX_RTMP_MAIN_CONF|NGX_RTMP_SRV_CONF|NGX_RTMP_APP_CONF|NGX_CONF_TAKE1,
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ngx_rtmp_bandwidth_detection_set_msec_slot,
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NGX_RTMP_APP_CONF_OFFSET,
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offsetof(ngx_rtmp_bandwidth_detection_app_conf_t, latency_undef),
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NULL },
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{ ngx_string("bw_auto_sense_time"),
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NGX_RTMP_MAIN_CONF|NGX_RTMP_SRV_CONF|NGX_RTMP_APP_CONF|NGX_CONF_TAKE1,
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ngx_rtmp_bandwidth_detection_set_msec_slot,
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NGX_RTMP_APP_CONF_OFFSET,
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offsetof(ngx_rtmp_bandwidth_detection_app_conf_t, test_time),
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NULL },
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ngx_null_command
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};
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static ngx_rtmp_module_t ngx_rtmp_bandwidth_detection_module_ctx = {
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NULL, /* preconfiguration */
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ngx_rtmp_bandwidth_detection_postconfiguration, /* postconfiguration */
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NULL, /* create main configuration */
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NULL, /* init main configuration */
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NULL, /* create server configuration */
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NULL, /* merge server configuration */
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ngx_rtmp_bandwidth_detection_create_app_conf, /* create app configuration */
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ngx_rtmp_bandwidth_detection_merge_app_conf /* merge app configuration */
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};
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ngx_module_t ngx_rtmp_bandwidth_detection_module = {
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NGX_MODULE_V1,
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&ngx_rtmp_bandwidth_detection_module_ctx, /* module context */
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ngx_rtmp_bandwidth_detection_commands, /* module directives */
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NGX_RTMP_MODULE, /* module type */
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NULL, /* init master */
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NULL, /* init module */
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NULL, /* init process */
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NULL, /* init thread */
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NULL, /* exit thread */
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NULL, /* exit process */
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NULL, /* exit master */
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NGX_MODULE_V1_PADDING
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};
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static void *
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ngx_rtmp_bandwidth_detection_create_app_conf(ngx_conf_t *cf)
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{
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ngx_rtmp_bandwidth_detection_app_conf_t *acf;
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ngx_uint_t i;
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acf = ngx_pcalloc(cf->pool, sizeof(ngx_rtmp_bandwidth_detection_app_conf_t));
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if (acf == NULL) {
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return NULL;
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}
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acf->auto_start = NGX_CONF_UNSET;
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acf->auto_sense = NGX_CONF_UNSET;
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acf->latency_max = NGX_CONF_UNSET_MSEC;
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acf->latency_min = NGX_CONF_UNSET_MSEC;
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acf->latency_undef = NGX_CONF_UNSET_MSEC;
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acf->test_time = NGX_CONF_UNSET_MSEC;
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/* Init payload only once with some random garbage */
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payload = ngx_pcalloc(cf->pool, NGX_RTMP_BANDWIDTH_DETECTION_PAYLOAD_LENGTH + 1);
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for (i=0; i<NGX_RTMP_BANDWIDTH_DETECTION_PAYLOAD_LENGTH; i++) {
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// make sure it is readable and not contain zero
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payload[i] = (ngx_random() % 32) + 32;
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}
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return acf;
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}
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static char *
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ngx_rtmp_bandwidth_detection_merge_app_conf(ngx_conf_t *cf, void *parent, void *child)
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{
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ngx_rtmp_bandwidth_detection_app_conf_t *prev = parent;
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ngx_rtmp_bandwidth_detection_app_conf_t *conf = child;
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ngx_conf_merge_value(conf->auto_start, prev->auto_start, 0);
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ngx_conf_merge_value(conf->auto_sense, prev->auto_sense, 0);
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ngx_conf_merge_msec_value(conf->latency_max, prev->latency_max, 800);
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ngx_conf_merge_msec_value(conf->latency_min, prev->latency_min, 10);
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ngx_conf_merge_msec_value(conf->latency_undef, prev->latency_undef, 100);
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ngx_conf_merge_msec_value(conf->test_time, prev->test_time, 2000);
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return NGX_CONF_OK;
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}
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static char *
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ngx_rtmp_bandwidth_detection_set_msec_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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{
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char *p = conf;
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ngx_str_t *value;
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ngx_msec_t *msp;
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msp = (ngx_msec_t *) (p + cmd->offset);
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value = cf->args->elts;
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if (value[1].len == sizeof("off") - 1 &&
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ngx_strncasecmp(value[1].data, (u_char *) "off", value[1].len) == 0)
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{
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*msp = 0;
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return NGX_CONF_OK;
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}
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return ngx_conf_set_msec_slot(cf, cmd, conf);
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}
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static ngx_int_t
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ngx_rtmp_bandwidth_detection_on_result(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
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ngx_chain_t *in)
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{
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ngx_rtmp_bandwidth_detection_app_conf_t *acf;
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ngx_rtmp_bandwidth_detection_ctx_t *ctx;
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static struct {
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double trans;
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ngx_uint_t count;
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} v;
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static ngx_rtmp_amf_elt_t in_elts[] = {
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{ NGX_RTMP_AMF_NUMBER,
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ngx_null_string,
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&v.trans, 0 },
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{ NGX_RTMP_AMF_NULL,
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ngx_null_string,
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NULL, 0 },
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{ NGX_RTMP_AMF_NUMBER,
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ngx_null_string,
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&v.count, 0 },
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};
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ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: _result");
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acf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_bandwidth_detection_module);
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if (acf == NULL) {
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ngx_log_error(NGX_LOG_WARN, s->connection->log, 0,
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"bandwidth_detection: _result - no app config!");
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return NGX_ERROR;
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}
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ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_bandwidth_detection_module);
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if (ctx == NULL || s->relay) {
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ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: _result - no context or relay!");
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return NGX_OK;
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}
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ngx_memzero(&v, sizeof(v));
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if (ngx_rtmp_receive_amf(s, in, in_elts,
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sizeof(in_elts) / sizeof(in_elts[0])))
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{
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ngx_log_error(NGX_LOG_WARN, s->connection->log, 0,
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"bandwidth_detection: _result - no packet readed!");
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return NGX_ERROR;
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}
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ngx_log_debug2(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: _result: trans='%f' count='%ui'",
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v.trans, v.count);
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if (acf->auto_sense) {
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switch ((ngx_int_t)v.trans) {
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case NGX_RTMP_BANDWIDTH_DETECTION_BWCHECK_TRANS:
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return ngx_rtmp_bandwidth_detection_check_result(s);
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case NGX_RTMP_BANDWIDTH_DETECTION_BWDONE_TRANS:
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/* Need to test it. Maybe need to set this before send bwDone. */
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ctx->active = 0;
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break;
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default:
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return NGX_OK;
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}
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}
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return NGX_OK;
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}
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static ngx_int_t
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ngx_rtmp_bandwidth_detection_on_error(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
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ngx_chain_t *in)
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{
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ngx_rtmp_bandwidth_detection_ctx_t *ctx;
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static struct {
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double trans;
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} v;
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static ngx_rtmp_amf_elt_t in_elts[] = {
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{ NGX_RTMP_AMF_NUMBER,
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ngx_null_string,
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&v.trans, 0 },
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};
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ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: _error");
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ngx_memzero(&v, sizeof(v));
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if (ngx_rtmp_receive_amf(s, in, in_elts,
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sizeof(in_elts) / sizeof(in_elts[0])))
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{
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ngx_log_error(NGX_LOG_WARN, s->connection->log, 0,
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"bandwidth_detection: _error - no packet readed!");
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return NGX_ERROR;
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}
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ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: _error: trans='%f''",
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v.trans);
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ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_bandwidth_detection_module);
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if (ctx == NULL) {
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ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: _result - no context!");
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return NGX_OK;
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}
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/**
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* If onBWCheck / onBWDone unsupported - drop activity
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*/
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switch ((ngx_int_t)v.trans) {
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case NGX_RTMP_BANDWIDTH_DETECTION_BWCHECK_TRANS:
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ngx_log_error(NGX_LOG_WARN, s->connection->log, 0,
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"bandwidth_detection: _error - client not support onBWCheck?");
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ctx->active = 0;
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break;
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case NGX_RTMP_BANDWIDTH_DETECTION_BWDONE_TRANS:
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ngx_log_error(NGX_LOG_WARN, s->connection->log, 0,
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"bandwidth_detection: _error - client not support onBWDone?");
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ctx->active = 0;
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break;
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default:
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return NGX_OK;
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}
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return NGX_OK;
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}
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/**
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* Start bandwidth detection here
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* Long version with multiple onBWCheck calls
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*/
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static ngx_int_t
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ngx_rtmp_bandwidth_detection_start(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h, ngx_chain_t *in)
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{
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ngx_rtmp_bandwidth_detection_app_conf_t *acf;
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ngx_rtmp_bandwidth_detection_ctx_t *bw_ctx;
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ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: start");
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if (s->relay) {
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ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: start - no relay please!");
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return NGX_ERROR;
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}
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acf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_bandwidth_detection_module);
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if (acf == NULL) {
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ngx_log_error(NGX_LOG_WARN, s->connection->log, 0,
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"bandwidth_detection: start - no app config!");
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return NGX_ERROR;
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}
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if (!acf->test_time) {
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ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: start - no test time!");
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return NGX_ERROR;
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}
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bw_ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_bandwidth_detection_module);
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if (bw_ctx == NULL) {
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ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: start - no context! create new and set for module and session!");
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bw_ctx = ngx_palloc(s->connection->pool, sizeof(ngx_rtmp_bandwidth_detection_ctx_t));
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if (bw_ctx == NULL) {
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ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: start - no context created!");
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return NGX_ERROR;
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}
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ngx_rtmp_set_ctx(s, bw_ctx, ngx_rtmp_bandwidth_detection_module);
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ngx_memzero(bw_ctx, sizeof(*bw_ctx));
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}
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if (bw_ctx->active) {
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ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: start - already active!");
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return NGX_OK;
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} else {
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bw_ctx->active = 1;
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bw_ctx->bw_begin_time = ngx_cached_time->msec;
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bw_ctx->pkt_sent = 1;
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bw_ctx->pkt_received = 0;
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bw_ctx->pkt_recv_time1 = 0;
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bw_ctx->pkt_recv_time2 = 0;
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bw_ctx->cum_latency = 0;
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bw_ctx->latency = acf->latency_min;
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bw_ctx->bytes_out = s->out_bytes;
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}
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// Send first packet with empty payload - for latency calculation
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return ngx_rtmp_send_bwcheck(s, NULL, 0);
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}
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/**
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* FAST bandwidth detection here
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*/
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static ngx_int_t
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ngx_rtmp_bandwidth_detection_fast(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h, ngx_chain_t *in)
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{
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ngx_rtmp_bandwidth_detection_app_conf_t *acf;
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ngx_rtmp_bandwidth_detection_ctx_t *bw_ctx;
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ngx_uint_t timePassed, snd_cnt;
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double deltaDown;
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double deltaTime;
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double kbitDown;
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ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: fast");
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if (s->relay) {
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ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: fast - no relay please!");
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return NGX_ERROR;
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}
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acf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_bandwidth_detection_module);
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if (acf == NULL) {
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ngx_log_error(NGX_LOG_WARN, s->connection->log, 0,
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"bandwidth_detection: fast - no app config!");
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return NGX_ERROR;
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}
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if (!acf->test_time) {
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ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: fast - no test time!");
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return NGX_ERROR;
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}
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bw_ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_bandwidth_detection_module);
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if (bw_ctx == NULL) {
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ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: fast - no context! create new and set for module and session!");
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bw_ctx = ngx_palloc(s->connection->pool, sizeof(ngx_rtmp_bandwidth_detection_ctx_t));
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if (bw_ctx == NULL) {
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ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
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"bandwidth_detection: fast - no context created!");
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return NGX_ERROR;
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}
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ngx_rtmp_set_ctx(s, bw_ctx, ngx_rtmp_bandwidth_detection_module);
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ngx_memzero(bw_ctx, sizeof(*bw_ctx));
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}
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// To prevent in _result call
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bw_ctx->active = 0;
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bw_ctx->bw_begin_time = ngx_cached_time->msec;
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bw_ctx->bw_begin_time2 = 0;
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bw_ctx->latency = acf->latency_min;
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bw_ctx->bytes_out2 = s->out_bytes;
|
|
|
|
ngx_rtmp_send_bwcheck(s, NULL, 0);
|
|
|
|
// Do some load for next call
|
|
snd_cnt = 0;
|
|
while (snd_cnt<5) {
|
|
if (NGX_OK != ngx_rtmp_send_bwcheck(s, payload, NGX_RTMP_BANDWIDTH_DETECTION_PAYLOAD_LENGTH)) {
|
|
break;
|
|
}
|
|
snd_cnt++;
|
|
}
|
|
|
|
/* Emulate accumulation between calls */
|
|
bw_ctx->bw_begin_time = bw_ctx->bw_begin_time2;
|
|
bw_ctx->bw_begin_time2 = ngx_cached_time->msec;
|
|
bw_ctx->bytes_out = bw_ctx->bytes_out2;
|
|
bw_ctx->bytes_out2 = s->out_bytes;
|
|
|
|
timePassed = (bw_ctx->bw_begin_time2 - bw_ctx->bw_begin_time) / snd_cnt;
|
|
|
|
bw_ctx->latency = ngx_min(timePassed, acf->latency_max);
|
|
bw_ctx->latency = ngx_max(bw_ctx->latency, acf->latency_min);
|
|
|
|
deltaDown = (bw_ctx->bytes_out2 - bw_ctx->bytes_out) *8/1000.;
|
|
deltaTime = ( (bw_ctx->bw_begin_time2 - bw_ctx->bw_begin_time) - (bw_ctx->latency*snd_cnt))/1000.;
|
|
|
|
if (deltaTime <= 0) deltaTime = (bw_ctx->bw_begin_time2 - bw_ctx->bw_begin_time)/1000.;
|
|
if (deltaTime <= 0) deltaTime = 1.;
|
|
|
|
kbitDown = deltaDown/deltaTime;
|
|
|
|
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
|
|
"bandwidth_detection: fast - check done!");
|
|
ngx_log_debug5(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
|
|
"bandwidth_detection: fast - kbitDown=%.3f, deltaDown=%.3f, deltaTime=%.3f, latency=%.3f, KBytes=%ui",
|
|
kbitDown, deltaDown, deltaTime, bw_ctx->latency, (bw_ctx->bytes_out2 - bw_ctx->bytes_out)/1024);
|
|
|
|
return ngx_rtmp_send_bwdone(s, kbitDown, deltaDown, deltaTime, bw_ctx->latency);
|
|
}
|
|
|
|
|
|
/**
|
|
* Bandwidth detection wrapper
|
|
*/
|
|
static ngx_int_t
|
|
ngx_rtmp_bandwidth_detection_wrapper(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h, ngx_chain_t *in)
|
|
{
|
|
ngx_rtmp_bandwidth_detection_app_conf_t *acf;
|
|
|
|
acf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_bandwidth_detection_module);
|
|
if (acf == NULL) {
|
|
ngx_log_error(NGX_LOG_WARN, s->connection->log, 0,
|
|
"bandwidth_detection: wrapper - no app config!");
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
if (acf->auto_sense) {
|
|
return ngx_rtmp_bandwidth_detection_start(s, h, in);
|
|
} else {
|
|
return ngx_rtmp_bandwidth_detection_fast(s, h, in);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Bandwidth detection from client side
|
|
*/
|
|
static ngx_int_t
|
|
ngx_rtmp_bandwidth_detection_clientcheck(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h, ngx_chain_t *in)
|
|
{
|
|
|
|
ngx_rtmp_bandwidth_detection_app_conf_t *acf;
|
|
ngx_rtmp_bandwidth_detection_ctx_t *bw_ctx;
|
|
|
|
static struct {
|
|
double trans;
|
|
ngx_msec_t time;
|
|
} v;
|
|
|
|
static ngx_rtmp_amf_elt_t in_elts[] = {
|
|
|
|
{ NGX_RTMP_AMF_NUMBER,
|
|
ngx_null_string,
|
|
&v.trans, 0 },
|
|
|
|
{ NGX_RTMP_AMF_NULL,
|
|
ngx_null_string,
|
|
NULL, 0 },
|
|
|
|
{ NGX_RTMP_AMF_NUMBER,
|
|
ngx_null_string,
|
|
&v.time, 0 },
|
|
|
|
};
|
|
|
|
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
|
|
"bandwidth_detection: bwcheck");
|
|
|
|
if (s->relay) {
|
|
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
|
|
"bandwidth_detection: bwcheck - no relay please!");
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
acf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_bandwidth_detection_module);
|
|
if (acf == NULL) {
|
|
ngx_log_error(NGX_LOG_WARN, s->connection->log, 0,
|
|
"bandwidth_detection: bwcheck - no app config!");
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
bw_ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_bandwidth_detection_module);
|
|
if (bw_ctx == NULL) {
|
|
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
|
|
"bandwidth_detection: bwcheck - no context! create new and set for module and session!");
|
|
|
|
bw_ctx = ngx_palloc(s->connection->pool, sizeof(ngx_rtmp_bandwidth_detection_ctx_t));
|
|
if (bw_ctx == NULL) {
|
|
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
|
|
"bandwidth_detection: bwcheck - no context created!");
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
ngx_rtmp_set_ctx(s, bw_ctx, ngx_rtmp_bandwidth_detection_module);
|
|
ngx_memzero(bw_ctx, sizeof(*bw_ctx));
|
|
|
|
}
|
|
|
|
ngx_memzero(&v, sizeof(v));
|
|
if (ngx_rtmp_receive_amf(s, in, in_elts,
|
|
sizeof(in_elts) / sizeof(in_elts[0])))
|
|
{
|
|
ngx_log_error(NGX_LOG_WARN, s->connection->log, 0,
|
|
"bandwidth_detection: bwcheck - no packet readed!");
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
ngx_log_debug2(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
|
|
"bandwidth_detection: bwcheck: trans='%f' time='%ui'",
|
|
v.trans, v.time);
|
|
|
|
return ngx_rtmp_send_onclientbwcheck(s, v.trans, s->out_bytes, s->in_bytes, v.time);
|
|
}
|
|
|
|
|
|
/**
|
|
* End bandwidth detection here
|
|
*/
|
|
static ngx_int_t
|
|
ngx_rtmp_bandwidth_detection_check_result(ngx_rtmp_session_t *s)
|
|
{
|
|
|
|
ngx_rtmp_bandwidth_detection_app_conf_t *acf;
|
|
ngx_rtmp_bandwidth_detection_ctx_t *bw_ctx;
|
|
ngx_uint_t timePassed;
|
|
ngx_uint_t deltaDown;
|
|
double deltaTime;
|
|
double kbitDown;
|
|
uint64_t bytesOut;
|
|
|
|
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
|
|
"bandwidth_detection: check");
|
|
|
|
acf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_bandwidth_detection_module);
|
|
if (acf == NULL) {
|
|
ngx_log_error(NGX_LOG_WARN, s->connection->log, 0,
|
|
"bandwidth_detection: check - no app config!");
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
if (!acf->test_time) {
|
|
ngx_log_error(NGX_LOG_WARN, s->connection->log, 0,
|
|
"bandwidth_detection: check - no test time!");
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
bw_ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_bandwidth_detection_module);
|
|
if (bw_ctx == NULL) {
|
|
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
|
|
"bandwidth_detection: check - no bw context!");
|
|
return NGX_OK;
|
|
}
|
|
if (!bw_ctx->active) {
|
|
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
|
|
"bandwidth_detection: check - not active!");
|
|
return NGX_OK;
|
|
}
|
|
|
|
timePassed = ngx_cached_time->msec - bw_ctx->bw_begin_time;
|
|
bw_ctx->pkt_received ++;
|
|
|
|
if (bw_ctx->pkt_received == 1) {
|
|
bw_ctx->latency = ngx_min(timePassed, acf->latency_max);
|
|
bw_ctx->latency = ngx_max(bw_ctx->latency, acf->latency_min);
|
|
bw_ctx->pkt_recv_time1 = ngx_cached_time->msec;
|
|
}
|
|
|
|
if (bw_ctx->pkt_received == 2) {
|
|
bw_ctx->pkt_recv_time2 = ngx_cached_time->msec;
|
|
}
|
|
|
|
// If we have a hi-speed network with low latency send more to determine
|
|
// better bandwidth numbers, send no more than 6 packets
|
|
if (bw_ctx->pkt_received == 2 && timePassed < acf->test_time) {
|
|
|
|
bw_ctx->pkt_sent ++;
|
|
bw_ctx->cum_latency ++;
|
|
return ngx_rtmp_send_bwcheck(s, payload, NGX_RTMP_BANDWIDTH_DETECTION_PAYLOAD_LENGTH);
|
|
|
|
} else if (bw_ctx->pkt_received == bw_ctx->pkt_sent) {
|
|
|
|
// See if we need to normalize latency
|
|
if ( bw_ctx->latency >= acf->latency_undef ) {
|
|
|
|
// make sure we detect sattelite and modem correctly
|
|
if (bw_ctx->pkt_recv_time2 - bw_ctx->pkt_recv_time1 > 1000) {
|
|
bw_ctx->latency = acf->latency_undef;
|
|
}
|
|
|
|
}
|
|
|
|
bytesOut = s->out_bytes;
|
|
deltaDown = (bytesOut - bw_ctx->bytes_out) *8/1000.;
|
|
deltaTime = ( (ngx_cached_time->msec - bw_ctx->bw_begin_time) - (bw_ctx->latency*bw_ctx->cum_latency))/1000.;
|
|
|
|
if (deltaTime <= 0) deltaTime = (ngx_cached_time->msec - bw_ctx->bw_begin_time)/1000.;
|
|
if (deltaTime <= 0) deltaTime = 1.;
|
|
|
|
kbitDown = deltaDown/deltaTime;
|
|
|
|
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
|
|
"bandwidth_detection: check - done!");
|
|
ngx_log_debug5(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
|
|
"bandwidth_detection: check - kbitDown=%ui, deltaDown=%.3f, deltaTime=%.3f, latency=%.3f, KBytes=%ui",
|
|
kbitDown, deltaDown, deltaTime, bw_ctx->latency, (bytesOut - bw_ctx->bytes_out)/1024);
|
|
|
|
return ngx_rtmp_send_bwdone(s, kbitDown, deltaDown, deltaTime, bw_ctx->latency);
|
|
}
|
|
|
|
if (bw_ctx->pkt_sent == 1 && bw_ctx->pkt_received == 1) {
|
|
// First call
|
|
return ngx_rtmp_send_bwcheck(s, payload, NGX_RTMP_BANDWIDTH_DETECTION_PAYLOAD_LENGTH);
|
|
}
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_rtmp_bandwidth_detection_connect(ngx_rtmp_session_t *s, ngx_rtmp_connect_t *v)
|
|
{
|
|
ngx_rtmp_bandwidth_detection_app_conf_t *acf;
|
|
ngx_int_t result;
|
|
|
|
result = next_connect(s, v);
|
|
|
|
if (result == NGX_OK) {
|
|
|
|
acf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_bandwidth_detection_module);
|
|
if (acf == NULL) {
|
|
ngx_log_error(NGX_LOG_WARN, s->connection->log, 0,
|
|
"bandwidth_detection: check - no app config!");
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
if (acf->auto_start) {
|
|
result = ngx_rtmp_bandwidth_detection_wrapper(s, NULL, NULL);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_rtmp_bandwidth_detection_postconfiguration(ngx_conf_t *cf)
|
|
{
|
|
ngx_rtmp_core_main_conf_t *cmcf;
|
|
ngx_rtmp_amf_handler_t *ch;
|
|
|
|
cmcf = ngx_rtmp_conf_get_module_main_conf(cf, ngx_rtmp_core_module);
|
|
|
|
next_connect = ngx_rtmp_connect;
|
|
ngx_rtmp_connect = ngx_rtmp_bandwidth_detection_connect;
|
|
|
|
ch = ngx_array_push(&cmcf->amf);
|
|
ngx_str_set(&ch->name, "_result");
|
|
ch->handler = ngx_rtmp_bandwidth_detection_on_result;
|
|
|
|
ch = ngx_array_push(&cmcf->amf);
|
|
ngx_str_set(&ch->name, "_error");
|
|
ch->handler = ngx_rtmp_bandwidth_detection_on_error;
|
|
|
|
ch = ngx_array_push(&cmcf->amf);
|
|
ngx_str_set(&ch->name, "checkBandwidth");
|
|
ch->handler = ngx_rtmp_bandwidth_detection_wrapper;
|
|
|
|
ch = ngx_array_push(&cmcf->amf);
|
|
ngx_str_set(&ch->name, "onClientBWCheck");
|
|
ch->handler = ngx_rtmp_bandwidth_detection_clientcheck;
|
|
|
|
return NGX_OK;
|
|
}
|