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small-package/luci-app-nginx-pingos/modules/nginx-rtmp-module/ngx_live_relay_inner.c

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/*
* Copyright (C) AlexWoo(Wu Jie) wj19840501@gmail.com
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include "ngx_live_relay.h"
#include "ngx_stream_zone_module.h"
#include "ngx_multiport.h"
static ngx_live_push_pt next_push;
static ngx_live_pull_pt next_pull;
static ngx_live_push_close_pt next_push_close;
static ngx_live_pull_close_pt next_pull_close;
static void *ngx_live_relay_inner_create_app_conf(ngx_conf_t *cf);
static char *ngx_live_relay_inner_merge_app_conf(ngx_conf_t *cf,
void *parent, void *child);
static ngx_int_t ngx_live_relay_inner_postconfiguration(ngx_conf_t *cf);
typedef struct {
ngx_flag_t inner_pull;
ngx_str_t inner_pull_port;
} ngx_live_relay_inner_app_conf_t;
static ngx_command_t ngx_live_relay_inner_commands[] = {
{ ngx_string("rtmp_auto_pull"),
NGX_RTMP_MAIN_CONF|NGX_RTMP_SRV_CONF|NGX_RTMP_APP_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_RTMP_APP_CONF_OFFSET,
offsetof(ngx_live_relay_inner_app_conf_t, inner_pull),
NULL },
{ ngx_string("rtmp_auto_pull_port"),
NGX_RTMP_MAIN_CONF|NGX_RTMP_SRV_CONF|NGX_RTMP_APP_CONF|NGX_CONF_TAKE1,
ngx_conf_set_str_slot,
NGX_RTMP_APP_CONF_OFFSET,
offsetof(ngx_live_relay_inner_app_conf_t, inner_pull_port),
NULL },
ngx_null_command
};
static ngx_rtmp_module_t ngx_live_relay_inner_module_ctx = {
NULL, /* preconfiguration */
ngx_live_relay_inner_postconfiguration, /* postconfiguration */
NULL, /* create main configuration */
NULL, /* init main configuration */
NULL, /* create server configuration */
NULL, /* merge server configuration */
ngx_live_relay_inner_create_app_conf, /* create app configuration */
ngx_live_relay_inner_merge_app_conf /* merge app configuration */
};
ngx_module_t ngx_live_relay_inner_module = {
NGX_MODULE_V1,
&ngx_live_relay_inner_module_ctx, /* module context */
ngx_live_relay_inner_commands, /* module directives */
NGX_RTMP_MODULE, /* module type */
NULL, /* init master */
NULL, /* init module */
NULL, /* init process */
NULL, /* init thread */
NULL, /* exit thread */
NULL, /* exit process */
NULL, /* exit master */
NGX_MODULE_V1_PADDING
};
static void *
ngx_live_relay_inner_create_app_conf(ngx_conf_t *cf)
{
ngx_live_relay_inner_app_conf_t *conf;
conf = ngx_pcalloc(cf->pool, sizeof(ngx_live_relay_inner_app_conf_t));
if (conf == NULL) {
return NULL;
}
conf->inner_pull = NGX_CONF_UNSET;
return conf;
}
static char *
ngx_live_relay_inner_merge_app_conf(ngx_conf_t *cf, void *parent, void *child)
{
ngx_live_relay_inner_app_conf_t *prev = parent;
ngx_live_relay_inner_app_conf_t *conf = child;
ngx_conf_merge_value(conf->inner_pull, prev->inner_pull, 1);
ngx_conf_merge_str_value(conf->inner_pull_port, prev->inner_pull_port,
"unix:/tmp/inner.sock");
return NGX_CONF_OK;
}
static ngx_int_t
ngx_live_relay_inner_create_relay(ngx_rtmp_session_t *rs,
ngx_live_relay_t *relay, ngx_int_t pslot)
{
ngx_live_relay_inner_app_conf_t *riacf;
ngx_live_relay_url_t *url;
ngx_str_t port;
riacf = ngx_rtmp_get_module_app_conf(rs, ngx_live_relay_inner_module);
ngx_memzero(relay, sizeof(ngx_live_relay_t));
if (ngx_array_init(&relay->urls, rs->pool, 1, sizeof(ngx_live_relay_url_t))
!= NGX_OK)
{
ngx_log_error(NGX_LOG_ERR, rs->log, 0,
"inner relay, relay init error: %V", &riacf->inner_pull_port);
return NGX_ERROR;
}
url = ngx_array_push(&relay->urls);
if (url == NULL) {
ngx_log_error(NGX_LOG_ERR, rs->log, 0,
"inner relay, get url failed: %V", &riacf->inner_pull_port);
return NGX_ERROR;
}
relay->tag = &ngx_live_relay_inner_module;
ngx_memzero(url, sizeof(ngx_live_relay_url_t));
ngx_memzero(&port, sizeof(ngx_str_t));
if (ngx_multiport_get_port(rs->pool, &port,
&riacf->inner_pull_port, pslot) == NGX_ERROR)
{
ngx_log_error(NGX_LOG_ERR, rs->log, 0,
"inner relay, get mulitport error: %V",
&riacf->inner_pull_port);
return NGX_ERROR;
}
url->url.host = port;
url->url.host_with_port = port;
url->relay_type = NGX_LIVE_RELAY_RTMP;
return NGX_OK;
}
static void
ngx_live_relay_inner_handler(ngx_event_t *ev)
{
ngx_rtmp_session_t *s;
ngx_live_relay_app_conf_t *lracf;
ngx_live_relay_ctx_t *ctx;
ngx_live_relay_t relay;
s = ev->data;
ctx = ngx_rtmp_get_module_ctx(s, ngx_live_relay_module);
if (!ctx->failed_delay && ev->timedout) { // connect timeout
ngx_log_error(NGX_LOG_ERR, s->log, NGX_ETIMEDOUT,
"inner relay, relay timeout");
s->finalize_reason = NGX_LIVE_RELAY_TIMEOUT;
ngx_rtmp_finalize_session(s);
return;
}
// relay pull, no player or relay push no publisher
if ((s->publishing && s->live_stream->play_ctx == NULL)
|| (!s->publishing && s->live_stream->publish_ctx == NULL))
{
return;
}
lracf = ngx_rtmp_get_module_app_conf(s, ngx_live_relay_module);
ngx_add_timer(&ctx->reconnect, lracf->relay_reconnect);
if (ngx_live_relay_inner_create_relay(s, &relay, s->live_stream->pslot)
!= NGX_OK)
{
return;
}
ngx_live_relay_create(s, &relay);
}
// if stream's need to continue pull or push chain, otherwise return NGX_OK
static ngx_int_t
ngx_live_relay_inner_relay(ngx_rtmp_session_t *s, unsigned publishing)
{
ngx_rtmp_session_t *rs;
ngx_live_relay_ctx_t *ctx, *pctx;
ngx_live_relay_app_conf_t *lracf;
ngx_int_t pslot;
pslot = ngx_stream_zone_insert_stream(&s->stream);
if (pslot == NGX_ERROR) { // stream zone not configured or configured error
ngx_log_error(NGX_LOG_ERR, s->log, 0,
"inner relay, insert stream %V failed", &s->stream);
return NGX_DECLINED;
}
ngx_log_error(NGX_LOG_INFO, s->log, 0,
"inner relay, stream %V not in current process, "
"pslot:%i ngx_process_slot:%i",
&s->stream, pslot, ngx_process_slot);
s->live_stream->pslot = pslot;
if (pslot == ngx_process_slot) { // current process become stream owner
return NGX_DECLINED;
}
rs = ngx_rtmp_create_relay_session(s, &ngx_live_relay_inner_module);
if (rs == NULL) {
ngx_log_error(NGX_LOG_ERR, s->log, 0,
"inner relay, create relay session failed");
return NGX_DECLINED;
}
rs->publishing = publishing;
rs->live_stream = s->live_stream;
ngx_live_create_ctx(rs, publishing);
ctx = ngx_rtmp_get_module_ctx(rs, ngx_live_relay_module);
ctx->reconnect.log = rs->log;
ctx->reconnect.data = rs;
ctx->reconnect.handler = ngx_live_relay_inner_handler;
lracf = ngx_rtmp_get_module_app_conf(rs, ngx_live_relay_module);
// play trigger pull or publish trigger push
if (s->publishing != rs->publishing) {
ngx_post_event(&ctx->reconnect, &ngx_posted_events);
return NGX_OK;
}
// normal publisher close, need to trigger pull
if (s->publishing && !s->relay) {
ngx_post_event(&ctx->reconnect, &ngx_posted_events);
return NGX_OK;
}
// reconnect
pctx = ngx_rtmp_get_module_ctx(s, ngx_live_relay_module);
if (pctx->successd) { // prev relay susccessd
ngx_post_event(&ctx->reconnect, &ngx_posted_events);
return NGX_OK;
}
if (!pctx->reconnect.timer_set) { // prev relay timeout
ctx->failed_reconnect = ngx_min(pctx->failed_reconnect * 2,
lracf->relay_reconnect);
ngx_post_event(&ctx->reconnect, &ngx_posted_events);
return NGX_OK;
}
if (pctx->failed_reconnect) {
ctx->failed_reconnect = ngx_min(pctx->failed_reconnect * 2,
lracf->relay_reconnect);
} else {
ctx->failed_reconnect = lracf->failed_reconnect;
}
ctx->failed_delay = 1;
ngx_add_timer(&ctx->reconnect, ctx->failed_reconnect);
return NGX_OK;
}
static ngx_int_t
ngx_live_relay_inner_push(ngx_rtmp_session_t *s)
{
ngx_live_relay_inner_app_conf_t *riacf;
riacf = ngx_rtmp_get_module_app_conf(s, ngx_live_relay_inner_module);
if (!riacf->inner_pull) {
goto next;
}
if (s->relay) {
goto next;
}
if (ngx_live_relay_inner_relay(s, 0) == NGX_OK) {
return NGX_OK;
}
next:
return next_push(s);
}
static ngx_int_t
ngx_live_relay_inner_pull(ngx_rtmp_session_t *s)
{
ngx_live_relay_inner_app_conf_t *riacf;
riacf = ngx_rtmp_get_module_app_conf(s, ngx_live_relay_inner_module);
if (!riacf->inner_pull) {
goto next;
}
if (!s->publishing && s->relay) { // relay push
goto next;
}
if (s->live_stream->pslot != -1) {
ngx_log_debug1(NGX_LOG_DEBUG_RTMP, s->log, 0,
"inner relay, stream %V already in current process",
&s->stream);
if (s->live_stream->pslot == ngx_process_slot) {
// stream leader is in current process, continue pull or push chain
goto next;
}
return NGX_OK;
}
if (ngx_live_relay_inner_relay(s, 1) == NGX_OK) {
return NGX_OK;
}
next:
return next_pull(s);
}
static ngx_int_t
ngx_live_relay_inner_push_close(ngx_rtmp_session_t *s)
{
ngx_live_relay_ctx_t *ctx;
ctx = ngx_rtmp_get_module_ctx(s, ngx_live_relay_module);
if (ctx->tag != &ngx_live_relay_inner_module) {
goto next;
}
// relay push and has publisher in stream
if (!ctx->giveup && s->live_stream->publish_ctx) {
ngx_live_relay_inner_relay(s, 0);
}
next:
return next_push_close(s);
}
static ngx_int_t
ngx_live_relay_inner_pull_close(ngx_rtmp_session_t *s)
{
ngx_live_relay_ctx_t *ctx;
ctx = ngx_rtmp_get_module_ctx(s, ngx_live_relay_module);
if (ctx == NULL) {
goto next;
}
if (ctx->tag != &ngx_live_relay_inner_module) {
goto next;
}
// inner relay close
s->live_stream->pslot = -1;
next:
return next_pull_close(s);
}
static ngx_int_t
ngx_live_relay_inner_postconfiguration(ngx_conf_t *cf)
{
/* chain handlers */
next_push = ngx_live_push;
ngx_live_push = ngx_live_relay_inner_push;
next_pull = ngx_live_pull;
ngx_live_pull = ngx_live_relay_inner_pull;
next_push_close = ngx_live_push_close;
ngx_live_push_close = ngx_live_relay_inner_push_close;
next_pull_close = ngx_live_pull_close;
ngx_live_pull_close = ngx_live_relay_inner_pull_close;
return NGX_OK;
}
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