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ngx_rtmp_relay_module.c
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/*
* Copyright (C) Roman Arutyunyan
* Copyright (C) Winshining
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include "ngx_rtmp_relay_module.h"
#include "ngx_rtmp_cmd_module.h"
#include "ngx_rtmp_eval.h"
static ngx_rtmp_publish_pt next_publish;
static ngx_rtmp_play_pt next_play;
static ngx_rtmp_delete_stream_pt next_delete_stream;
static ngx_rtmp_close_stream_pt next_close_stream;
static ngx_int_t ngx_rtmp_relay_init_process(ngx_cycle_t *cycle);
static ngx_int_t ngx_rtmp_relay_postconfiguration(ngx_conf_t *cf);
static void * ngx_rtmp_relay_create_app_conf(ngx_conf_t *cf);
static char * ngx_rtmp_relay_merge_app_conf(ngx_conf_t *cf,
void *parent, void *child);
static char * ngx_rtmp_relay_push_pull(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static ngx_int_t ngx_rtmp_relay_publish(ngx_rtmp_session_t *s,
ngx_rtmp_publish_t *v);
static ngx_rtmp_relay_ctx_t * ngx_rtmp_relay_create_connection(
ngx_rtmp_conf_ctx_t *cctx, ngx_str_t* name,
ngx_rtmp_relay_target_t *target);
static void ngx_rtmp_relay_eval_ctx_str(void *ctx, ngx_rtmp_eval_t *e,
ngx_str_t *ret);
/* _____
* =push= | |---publish--->
* ---publish--->| |---publish--->
* (src) | |---publish--->
* ----- (next,relay)
* need reconnect
* =pull= _____
* -----play---->| |
* -----play---->| |----play----->
* -----play---->| | (src,relay)
* (next) -----
*/
typedef struct {
ngx_rtmp_conf_ctx_t cctx;
ngx_rtmp_relay_target_t *target;
} ngx_rtmp_relay_static_t;
#define NGX_RTMP_RELAY_CONNECT_TRANS 1
#define NGX_RTMP_RELAY_RELEASE_STREAM_TRANS 2
#define NGX_RTMP_RELAY_FCPUBLISH_STREAM_TRANS 3
#define NGX_RTMP_RELAY_CREATE_STREAM_TRANS 4
#define NGX_RTMP_RELAY_CSID_AMF_INI 3
#define NGX_RTMP_RELAY_CSID_AMF 5
#define NGX_RTMP_RELAY_MSID 1
/* default flashVer */
#define NGX_RTMP_RELAY_FLASHVER "LNX.11,1,102,55"
static ngx_command_t ngx_rtmp_relay_commands[] = {
{ ngx_string("push"),
NGX_RTMP_APP_CONF|NGX_CONF_1MORE,
ngx_rtmp_relay_push_pull,
NGX_RTMP_APP_CONF_OFFSET,
0,
NULL },
{ ngx_string("pull"),
NGX_RTMP_APP_CONF|NGX_CONF_1MORE,
ngx_rtmp_relay_push_pull,
NGX_RTMP_APP_CONF_OFFSET,
0,
NULL },
{ ngx_string("relay_buffer"),
NGX_RTMP_MAIN_CONF|NGX_RTMP_SRV_CONF|NGX_CONF_TAKE1,
ngx_conf_set_msec_slot,
NGX_RTMP_APP_CONF_OFFSET,
offsetof(ngx_rtmp_relay_app_conf_t, buflen),
NULL },
{ ngx_string("push_reconnect"),
NGX_RTMP_MAIN_CONF|NGX_RTMP_SRV_CONF|NGX_RTMP_APP_CONF|NGX_CONF_TAKE1,
ngx_conf_set_msec_slot,
NGX_RTMP_APP_CONF_OFFSET,
offsetof(ngx_rtmp_relay_app_conf_t, push_reconnect),
NULL },
{ ngx_string("pull_reconnect"),
NGX_RTMP_MAIN_CONF|NGX_RTMP_SRV_CONF|NGX_RTMP_APP_CONF|NGX_CONF_TAKE1,
ngx_conf_set_msec_slot,
NGX_RTMP_APP_CONF_OFFSET,
offsetof(ngx_rtmp_relay_app_conf_t, pull_reconnect),
NULL },
{ ngx_string("session_relay"),
NGX_RTMP_MAIN_CONF|NGX_RTMP_SRV_CONF|NGX_RTMP_APP_CONF|NGX_CONF_TAKE1,
ngx_conf_set_flag_slot,
NGX_RTMP_APP_CONF_OFFSET,
offsetof(ngx_rtmp_relay_app_conf_t, session_relay),
NULL },
ngx_null_command
};
static ngx_rtmp_module_t ngx_rtmp_relay_module_ctx = {
NULL, /* preconfiguration */
ngx_rtmp_relay_postconfiguration, /* postconfiguration */
NULL, /* create main configuration */
NULL, /* init main configuration */
NULL, /* create server configuration */
NULL, /* merge server configuration */
ngx_rtmp_relay_create_app_conf, /* create app configuration */
ngx_rtmp_relay_merge_app_conf /* merge app configuration */
};
ngx_module_t ngx_rtmp_relay_module = {
NGX_MODULE_V1,
&ngx_rtmp_relay_module_ctx, /* module context */
ngx_rtmp_relay_commands, /* module directives */
NGX_RTMP_MODULE, /* module type */
NULL, /* init master */
NULL, /* init module */
ngx_rtmp_relay_init_process, /* init process */
NULL, /* init thread */
NULL, /* exit thread */
NULL, /* exit process */
NULL, /* exit master */
NGX_MODULE_V1_PADDING
};
static ngx_rtmp_eval_t ngx_rtmp_relay_specific_eval[] = {
{ ngx_string("name"),
ngx_rtmp_relay_eval_ctx_str,
offsetof(ngx_rtmp_session_t, stream) },
{ ngx_string("args"),
ngx_rtmp_relay_eval_ctx_str,
offsetof(ngx_rtmp_session_t, args) },
ngx_rtmp_null_eval
};
static ngx_rtmp_eval_t *ngx_rtmp_relay_eval[] = {
ngx_rtmp_eval_session,
ngx_rtmp_relay_specific_eval,
NULL
};
static void
ngx_rtmp_relay_eval_ctx_str(void *ctx, ngx_rtmp_eval_t *e, ngx_str_t *ret)
{
*ret = *(ngx_str_t *) ((u_char *) ctx + e->offset);
}
static void *
ngx_rtmp_relay_create_app_conf(ngx_conf_t *cf)
{
ngx_rtmp_relay_app_conf_t *racf;
racf = ngx_pcalloc(cf->pool, sizeof(ngx_rtmp_relay_app_conf_t));
if (racf == NULL) {
return NULL;
}
if (ngx_array_init(&racf->pushes, cf->pool, 1, sizeof(void *)) != NGX_OK) {
return NULL;
}
if (ngx_array_init(&racf->pulls, cf->pool, 1, sizeof(void *)) != NGX_OK) {
return NULL;
}
if (ngx_array_init(&racf->static_pulls, cf->pool, 1, sizeof(void *))
!= NGX_OK)
{
return NULL;
}
if (ngx_array_init(&racf->static_events, cf->pool, 1, sizeof(void *))
!= NGX_OK)
{
return NULL;
}
racf->nbuckets = 1024;
racf->log = &cf->cycle->new_log;
racf->buflen = NGX_CONF_UNSET_MSEC;
racf->session_relay = NGX_CONF_UNSET;
racf->push_reconnect = NGX_CONF_UNSET_MSEC;
racf->pull_reconnect = NGX_CONF_UNSET_MSEC;
return racf;
}
static char *
ngx_rtmp_relay_merge_app_conf(ngx_conf_t *cf, void *parent, void *child)
{
ngx_rtmp_relay_app_conf_t *prev = parent;
ngx_rtmp_relay_app_conf_t *conf = child;
conf->ctx = ngx_pcalloc(cf->pool, sizeof(ngx_rtmp_relay_ctx_t *)
* conf->nbuckets);
ngx_conf_merge_value(conf->session_relay, prev->session_relay, 0);
ngx_conf_merge_msec_value(conf->buflen, prev->buflen, 5000);
ngx_conf_merge_msec_value(conf->push_reconnect, prev->push_reconnect,
3000);
ngx_conf_merge_msec_value(conf->pull_reconnect, prev->pull_reconnect,
3000);
return NGX_CONF_OK;
}
static void
ngx_rtmp_relay_static_pull_reconnect(ngx_event_t *ev)
{
ngx_rtmp_relay_static_t *rs = ev->data;
ngx_rtmp_relay_ctx_t *ctx;
ngx_rtmp_relay_app_conf_t *racf;
racf = ngx_rtmp_get_module_app_conf(&rs->cctx, ngx_rtmp_relay_module);
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, racf->log, 0,
"relay: reconnecting static pull");
ctx = ngx_rtmp_relay_create_connection(&rs->cctx, &rs->target->name,
rs->target);
if (ctx) {
ctx->session->static_relay = 1;
ctx->static_evt = ev;
return;
}
ngx_add_timer(ev, racf->pull_reconnect);
}
static void
ngx_rtmp_relay_push_reconnect(ngx_event_t *ev)
{
ngx_rtmp_session_t *s = ev->data;
ngx_rtmp_relay_app_conf_t *racf;
ngx_rtmp_relay_ctx_t *ctx, *pctx;
ngx_uint_t n;
ngx_rtmp_relay_target_t *target, **t;
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"relay: push reconnect");
racf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_relay_module);
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_relay_module);
if (ctx == NULL) {
return;
}
t = racf->pushes.elts;
for (n = 0; n < racf->pushes.nelts; ++n, ++t) {
target = *t;
if (target->name.len && (ctx->name.len != target->name.len ||
ngx_memcmp(ctx->name.data, target->name.data, ctx->name.len)))
{
continue;
}
for (pctx = ctx->play; pctx; pctx = pctx->next) {
if (pctx->tag == &ngx_rtmp_relay_module &&
pctx->data == target)
{
break;
}
}
if (pctx) {
continue;
}
if (ngx_rtmp_relay_push(s, &ctx->name, target) == NGX_OK) {
continue;
}
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"relay: push reconnect failed name='%V' app='%V' "
"playpath='%V' url='%V' args='%V'",
&ctx->name, &target->app, &target->play_path,
&target->url.url, &s->args);
if (!ctx->push_evt.timer_set) {
ngx_add_timer(&ctx->push_evt, racf->push_reconnect);
}
}
}
static ngx_int_t
ngx_rtmp_relay_get_peer(ngx_peer_connection_t *pc, void *data)
{
return NGX_OK;
}
static void
ngx_rtmp_relay_free_peer(ngx_peer_connection_t *pc, void *data,
ngx_uint_t state)
{
}
typedef ngx_rtmp_relay_ctx_t * (* ngx_rtmp_relay_create_ctx_pt)
(ngx_rtmp_session_t *s, ngx_str_t *name, ngx_rtmp_relay_target_t *target);
static ngx_int_t
ngx_rtmp_relay_copy_str(ngx_pool_t *pool, ngx_str_t *dst, ngx_str_t *src)
{
if (src->len == 0) {
return NGX_OK;
}
dst->len = src->len;
dst->data = ngx_palloc(pool, src->len);
if (dst->data == NULL) {
return NGX_ERROR;
}
ngx_memcpy(dst->data, src->data, src->len);
return NGX_OK;
}
static ngx_rtmp_relay_ctx_t *
ngx_rtmp_relay_create_connection(ngx_rtmp_conf_ctx_t *cctx, ngx_str_t *name,
ngx_rtmp_relay_target_t *target)
{
ngx_rtmp_relay_app_conf_t *racf;
ngx_rtmp_relay_ctx_t *rctx;
ngx_rtmp_addr_conf_t *addr_conf;
ngx_rtmp_conf_ctx_t *addr_ctx;
ngx_rtmp_session_t *rs;
ngx_peer_connection_t *pc;
ngx_connection_t *c;
ngx_addr_t *addr;
ngx_pool_t *pool;
size_t len;
ngx_int_t rc;
ngx_str_t v, *uri;
u_char *first, *last, *p;
u_char buf[NGX_SOCKADDR_STRLEN];
racf = ngx_rtmp_get_module_app_conf(cctx, ngx_rtmp_relay_module);
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, racf->log, 0,
"relay: create remote context");
pool = NULL;
pool = ngx_create_pool(4096, racf->log);
if (pool == NULL) {
return NULL;
}
rctx = ngx_pcalloc(pool, sizeof(ngx_rtmp_relay_ctx_t));
if (rctx == NULL) {
goto clear;
}
if (name && ngx_rtmp_relay_copy_str(pool, &rctx->name, name) != NGX_OK) {
goto clear;
}
if (ngx_rtmp_relay_copy_str(pool, &rctx->url, &target->url.url) != NGX_OK) {
goto clear;
}
rctx->tag = target->tag;
rctx->data = target->data;
#define NGX_RTMP_RELAY_STR_COPY(to, from) \
if (ngx_rtmp_relay_copy_str(pool, &rctx->to, &target->from) != NGX_OK) { \
goto clear; \
}
NGX_RTMP_RELAY_STR_COPY(app, app);
NGX_RTMP_RELAY_STR_COPY(tc_url, tc_url);
NGX_RTMP_RELAY_STR_COPY(page_url, page_url);
NGX_RTMP_RELAY_STR_COPY(swf_url, swf_url);
NGX_RTMP_RELAY_STR_COPY(flash_ver, flash_ver);
NGX_RTMP_RELAY_STR_COPY(play_path, play_path);
rctx->live = target->live;
rctx->start = target->start;
rctx->stop = target->stop;
#undef NGX_RTMP_RELAY_STR_COPY
if (rctx->app.len == 0 || rctx->play_path.len == 0) {
/* parse uri */
uri = &target->url.uri;
first = uri->data;
last = uri->data + uri->len;
if (first != last && *first == '/') {
++first;
}
if (first != last) {
/* deduce app */
p = ngx_strlchr(first, last, '/');
if (p == NULL) {
p = last;
}
if (rctx->app.len == 0 && first != p) {
v.data = first;
v.len = p - first;
if (ngx_rtmp_relay_copy_str(pool, &rctx->app, &v) != NGX_OK) {
goto clear;
}
}
/* deduce play_path */
if (p != last) {
++p;
}
if (rctx->play_path.len == 0 && p != last) {
v.data = p;
v.len = last - p;
if (ngx_rtmp_relay_copy_str(pool, &rctx->play_path, &v)
!= NGX_OK)
{
goto clear;
}
}
}
}
pc = ngx_pcalloc(pool, sizeof(ngx_peer_connection_t));
if (pc == NULL) {
goto clear;
}
if (target->url.naddrs == 0) {
ngx_log_error(NGX_LOG_ERR, racf->log, 0,
"relay: no address");
goto clear;
}
/* get address */
addr = &target->url.addrs[target->counter % target->url.naddrs];
target->counter++;
/* copy log to keep shared log unchanged */
rctx->log = *racf->log;
pc->log = &rctx->log;
pc->get = ngx_rtmp_relay_get_peer;
pc->free = ngx_rtmp_relay_free_peer;
pc->name = &addr->name;
pc->socklen = addr->socklen;
pc->sockaddr = (struct sockaddr *)ngx_palloc(pool, pc->socklen);
if (pc->sockaddr == NULL) {
goto clear;
}
ngx_memcpy(pc->sockaddr, addr->sockaddr, pc->socklen);
rc = ngx_event_connect_peer(pc);
if (rc != NGX_OK && rc != NGX_AGAIN ) {
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, racf->log, 0,
"relay: connection failed");
goto clear;
}
c = pc->connection;
c->pool = pool;
if (addr->sockaddr->sa_family != AF_UNIX) {
len = ngx_sock_ntop(pc->sockaddr,
#if (nginx_version >= 1005003)
pc->socklen,
#endif
buf, NGX_SOCKADDR_STRLEN, 0);
c->addr_text.data = ngx_pcalloc(pool, len);
if (c->addr_text.data == NULL) {
ngx_log_error(NGX_LOG_ERR, racf->log, 0,
"relay: allocation for address failed");
goto clear;
}
c->addr_text.len = len;
ngx_memcpy(c->addr_text.data, buf, len);
}
#if (NGX_HAVE_UNIX_DOMAIN)
if (addr->sockaddr->sa_family == AF_UNIX) {
c->addr_text.len = target->url.host.len;
c->addr_text.data = ngx_pcalloc(pool, c->addr_text.len);
if (c->addr_text.data == NULL) {
ngx_log_error(NGX_LOG_ERR, racf->log, 0,
"relay: allocation for unix address failed");
goto clear;
}
ngx_memcpy(c->addr_text.data, target->url.host.data, c->addr_text.len);
}
#endif
addr_conf = ngx_pcalloc(pool, sizeof(ngx_rtmp_addr_conf_t));
if (addr_conf == NULL) {
goto clear;
}
addr_conf->default_server = ngx_pcalloc(pool,
sizeof(ngx_rtmp_core_srv_conf_t));
if (addr_conf->default_server == NULL) {
goto clear;
}
addr_ctx = ngx_pcalloc(pool, sizeof(ngx_rtmp_conf_ctx_t));
if (addr_ctx == NULL) {
goto clear;
}
addr_conf->default_server->ctx = addr_ctx;
addr_ctx->main_conf = cctx->main_conf;
addr_ctx->srv_conf = cctx->srv_conf;
ngx_str_set(&addr_conf->addr_text, "ngx-relay");
rs = ngx_rtmp_init_session(c, addr_conf);
if (rs == NULL) {
/* no need to destroy pool */
return NULL;
}
rs->app_conf = cctx->app_conf;
rs->relay = 1;
rctx->session = rs;
ngx_rtmp_set_ctx(rs, rctx, ngx_rtmp_relay_module);
ngx_str_set(&rs->flashver, "ngx-local-relay");
#if (NGX_STAT_STUB)
(void) ngx_atomic_fetch_add(ngx_stat_active, 1);
#endif
ngx_rtmp_client_handshake(rs, 1);
return rctx;
clear:
if (pool) {
ngx_destroy_pool(pool);
}
return NULL;
}
static ngx_rtmp_relay_ctx_t *
ngx_rtmp_relay_create_remote_ctx(ngx_rtmp_session_t *s, ngx_str_t *name,
ngx_rtmp_relay_target_t *target)
{
ngx_str_t url;
ngx_url_t save;
ngx_rtmp_conf_ctx_t cctx;
ngx_rtmp_relay_ctx_t *rctx;
cctx.app_conf = s->app_conf;
cctx.srv_conf = s->srv_conf;
cctx.main_conf = s->main_conf;
rctx = NULL;
save = target->url;
if(ngx_strlchr(target->url.url.data,
target->url.url.data + target->url.url.len, '$'))
{
ngx_memzero(&url, sizeof(ngx_str_t));
if(ngx_rtmp_eval(s, &target->url.url, ngx_rtmp_relay_eval,
&url, s->connection->log) == NGX_OK)
{
target->url.default_port = 1935;
target->url.uri_part = 1;
target->url.url = url;
if(ngx_parse_url(s->connection->pool, &target->url) != NGX_OK) {
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"relay: invalid url='%V'", &target->url.url);
goto error;
}
} else {
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"relay: failed to eval url='%V'", &target->url.url);
goto error;
}
}
rctx = ngx_rtmp_relay_create_connection(&cctx, name, target);
if (rctx) {
rctx->server_name.data = s->host_start;
rctx->server_name.len = s->host_end - s->host_start;
}
error:
target->url = save;
return rctx;
}
static ngx_rtmp_relay_ctx_t *
ngx_rtmp_relay_create_local_ctx(ngx_rtmp_session_t *s, ngx_str_t *name,
ngx_rtmp_relay_target_t *target)
{
ngx_rtmp_relay_ctx_t *ctx;
ngx_log_debug0(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"relay: create local context");
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_relay_module);
if (ctx == NULL) {
ctx = ngx_pcalloc(s->connection->pool, sizeof(ngx_rtmp_relay_ctx_t));
if (ctx == NULL) {
return NULL;
}
ngx_rtmp_set_ctx(s, ctx, ngx_rtmp_relay_module);
}
ctx->session = s;
ctx->push_evt.data = s;
ctx->push_evt.log = s->connection->log;
ctx->push_evt.handler = ngx_rtmp_relay_push_reconnect;
if (ctx->publish) {
return NULL;
}
if (ngx_rtmp_relay_copy_str(s->connection->pool, &ctx->name, name)
!= NGX_OK)
{
return NULL;
}
return ctx;
}
static ngx_int_t
ngx_rtmp_relay_create(ngx_rtmp_session_t *s, ngx_str_t *name,
ngx_rtmp_relay_target_t *target,
ngx_rtmp_relay_create_ctx_pt create_publish_ctx,
ngx_rtmp_relay_create_ctx_pt create_play_ctx)
{
ngx_rtmp_relay_app_conf_t *racf;
ngx_rtmp_relay_ctx_t *publish_ctx, *play_ctx, **cctx;
ngx_uint_t hash;
racf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_relay_module);
if (racf == NULL) {
return NGX_ERROR;
}
play_ctx = create_play_ctx(s, name, target);
if (play_ctx == NULL) {
return NGX_ERROR;
}
hash = ngx_hash_key(name->data, name->len);
cctx = &racf->ctx[hash % racf->nbuckets];
for (; *cctx; cctx = &(*cctx)->next) {
if ((*cctx)->name.len == name->len
&& !ngx_memcmp(name->data, (*cctx)->name.data,
name->len))
{
break;
}
}
if (*cctx) {
play_ctx->publish = (*cctx)->publish;
play_ctx->next = (*cctx)->play;
(*cctx)->play = play_ctx;
return NGX_OK;
}
publish_ctx = create_publish_ctx(s, name, target);
if (publish_ctx == NULL) {
ngx_rtmp_finalize_session(play_ctx->session);
return NGX_ERROR;
}
publish_ctx->publish = publish_ctx;
publish_ctx->play = play_ctx;
play_ctx->publish = publish_ctx;
*cctx = publish_ctx;
return NGX_OK;
}
ngx_int_t
ngx_rtmp_relay_pull(ngx_rtmp_session_t *s, ngx_str_t *name,
ngx_rtmp_relay_target_t *target)
{
ngx_log_error(NGX_LOG_INFO, s->connection->log, 0,
"relay: create pull name='%V' app='%V' playpath='%V' "
"url='%V' args='%V'",
name, &target->app, &target->play_path,
&target->url.url, &s->args);
return ngx_rtmp_relay_create(s, name, target,
ngx_rtmp_relay_create_remote_ctx,
ngx_rtmp_relay_create_local_ctx);
}
ngx_int_t
ngx_rtmp_relay_push(ngx_rtmp_session_t *s, ngx_str_t *name,
ngx_rtmp_relay_target_t *target)
{
ngx_log_error(NGX_LOG_INFO, s->connection->log, 0,
"relay: create push name='%V' app='%V' playpath='%V' "
"url='%V' args='%V'",
name, &target->app, &target->play_path,
&target->url.url, &s->args);
return ngx_rtmp_relay_create(s, name, target,
ngx_rtmp_relay_create_local_ctx,
ngx_rtmp_relay_create_remote_ctx);
}
static ngx_int_t
ngx_rtmp_relay_publish(ngx_rtmp_session_t *s, ngx_rtmp_publish_t *v)
{
ngx_rtmp_relay_app_conf_t *racf;
ngx_rtmp_relay_target_t *target, **t;
ngx_str_t name;
size_t n;
ngx_rtmp_relay_ctx_t *ctx;
if (s->auto_pushed) {
goto next;
}
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_relay_module);
if (ctx && s->relay) {
goto next;
}
racf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_relay_module);
if (racf == NULL || racf->pushes.nelts == 0) {
goto next;
}
name.len = ngx_strlen(v->name);
name.data = v->name;
t = racf->pushes.elts;
for (n = 0; n < racf->pushes.nelts; ++n, ++t) {
target = *t;
if (target->name.len && (name.len != target->name.len ||
ngx_memcmp(name.data, target->name.data, name.len)))
{
continue;
}
if (ngx_rtmp_relay_push(s, &name, target) == NGX_OK) {
continue;
}
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"relay: push failed name='%V' app='%V' "
"playpath='%V' url='%V' args='%V'",
&name, &target->app, &target->play_path,
&target->url.url, &s->args);
/* ctx == NULL && s->relay == 0, BOOM! */
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_relay_module);
if (ctx && !ctx->push_evt.timer_set) {
ngx_add_timer(&ctx->push_evt, racf->push_reconnect);
}
}
next:
return next_publish(s, v);
}
static ngx_int_t
ngx_rtmp_relay_play(ngx_rtmp_session_t *s, ngx_rtmp_play_t *v)
{
ngx_rtmp_relay_app_conf_t *racf;
ngx_rtmp_relay_target_t *target, **t;
ngx_str_t name;
size_t n;
ngx_rtmp_relay_ctx_t *ctx;
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_relay_module);
if (ctx && s->relay) {
goto next;
}
racf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_relay_module);
if (racf == NULL || racf->pulls.nelts == 0) {
goto next;
}
name.len = ngx_strlen(v->name);
name.data = v->name;
t = racf->pulls.elts;
for (n = 0; n < racf->pulls.nelts; ++n, ++t) {
target = *t;
if (target->name.len && (name.len != target->name.len ||
ngx_memcmp(name.data, target->name.data, name.len)))
{
continue;
}
if (ngx_rtmp_relay_pull(s, &name, target) == NGX_OK) {
continue;
}
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"relay: pull failed name='%V' app='%V' "
"playpath='%V' url='%V' args='%V'",
&name, &target->app, &target->play_path,
&target->url.url, &s->args);
}
next:
return next_play(s, v);
}
static ngx_int_t
ngx_rtmp_relay_play_local(ngx_rtmp_session_t *s)
{
ngx_rtmp_play_t v;
ngx_rtmp_relay_ctx_t *ctx;
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_relay_module);
if (ctx == NULL) {
return NGX_ERROR;
}
ngx_memzero(&v, sizeof(ngx_rtmp_play_t));
v.silent = 1;
*(ngx_cpymem(v.name, ctx->name.data,
ngx_min(sizeof(v.name) - 1, ctx->name.len))) = 0;
return ngx_rtmp_play(s, &v);
}
static ngx_int_t
ngx_rtmp_relay_publish_local(ngx_rtmp_session_t *s)
{
ngx_rtmp_publish_t v;
ngx_rtmp_relay_ctx_t *ctx;
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_relay_module);
if (ctx == NULL) {
return NGX_ERROR;
}
ngx_memzero(&v, sizeof(ngx_rtmp_publish_t));
v.silent = 1;
*(ngx_cpymem(v.name, ctx->name.data,
ngx_min(sizeof(v.name) - 1, ctx->name.len))) = 0;
return ngx_rtmp_publish(s, &v);
}
static ngx_int_t
ngx_rtmp_relay_send_connect(ngx_rtmp_session_t *s)
{
static double trans = NGX_RTMP_RELAY_CONNECT_TRANS;
static double acodecs = 3575;
static double vcodecs = 252;
static ngx_rtmp_amf_elt_t out_cmd[] = {
{ NGX_RTMP_AMF_STRING,
ngx_string("app"),
NULL, 0 }, /* <-- fill */
{ NGX_RTMP_AMF_STRING,
ngx_string("tcUrl"),
NULL, 0 }, /* <-- fill */
{ NGX_RTMP_AMF_STRING,
ngx_string("pageUrl"),
NULL, 0 }, /* <-- fill */
{ NGX_RTMP_AMF_STRING,
ngx_string("swfUrl"),
NULL, 0 }, /* <-- fill */
{ NGX_RTMP_AMF_STRING,
ngx_string("flashVer"),
NULL, 0 }, /* <-- fill */
{ NGX_RTMP_AMF_STRING,
ngx_string("serverName"),
NULL, 0 }, /* <-- fill */
{ NGX_RTMP_AMF_NUMBER,
ngx_string("audioCodecs"),
&acodecs, 0 },
{ NGX_RTMP_AMF_NUMBER,
ngx_string("videoCodecs"),
&vcodecs, 0 }
};
static ngx_rtmp_amf_elt_t out_elts[] = {
{ NGX_RTMP_AMF_STRING,
ngx_null_string,
"connect", 0 },
{ NGX_RTMP_AMF_NUMBER,
ngx_null_string,
&trans, 0 },
{ NGX_RTMP_AMF_OBJECT,
ngx_null_string,
out_cmd, sizeof(out_cmd) }
};
ngx_rtmp_core_app_conf_t *cacf;
ngx_rtmp_core_srv_conf_t *cscf;
ngx_rtmp_relay_ctx_t *ctx;
ngx_rtmp_header_t h;
size_t len, url_len;
u_char *p, *url_end;
cacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_core_module);
cscf = ngx_rtmp_get_module_srv_conf(s, ngx_rtmp_core_module);
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_relay_module);
if (cacf == NULL || ctx == NULL) {
return NGX_ERROR;
}
/* app */
if (ctx->app.len) {
out_cmd[0].data = ctx->app.data;
out_cmd[0].len = ctx->app.len;
} else {
out_cmd[0].data = cacf->name.data;
out_cmd[0].len = cacf->name.len;
}
/* tcUrl */
if (ctx->tc_url.len) {
out_cmd[1].data = ctx->tc_url.data;
out_cmd[1].len = ctx->tc_url.len;
} else {
len = sizeof("rtmp://") - 1 + ctx->url.len +
sizeof("/") - 1 + ctx->app.len;
p = ngx_palloc(s->connection->pool, len);
if (p == NULL) {
return NGX_ERROR;
}
out_cmd[1].data = p;
p = ngx_cpymem(p, "rtmp://", sizeof("rtmp://") - 1);
url_len = ctx->url.len;
url_end = ngx_strlchr(ctx->url.data, ctx->url.data + ctx->url.len, '/');
if (url_end) {
url_len = (size_t) (url_end - ctx->url.data);
}
p = ngx_cpymem(p, ctx->url.data, url_len);