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ngx_rtmp_relay_module.c
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ngx_rtmp_relay_module.c
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/*
* Copyright (c) 2012 Roman Arutyunyan
*/
#include "ngx_rtmp_relay_module.h"
#include "ngx_rtmp_cmd_module.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_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);
/* _____
* =push= | |---publish--->
* ---publish--->| |---publish--->
* (src) | |---publish--->
* ----- (next,relay)
* need reconnect
* =pull= _____
* -----play---->| |
* -----play---->| |----play----->
* -----play---->| | (src,relay)
* (next) -----
*/
typedef struct {
ngx_url_t url;
ngx_str_t app;
ngx_str_t name;
unsigned push:1;
} ngx_rtmp_relay_target_t;
typedef struct ngx_rtmp_relay_ctx_s ngx_rtmp_relay_ctx_t;
struct ngx_rtmp_relay_ctx_s {
ngx_str_t name;
ngx_str_t app;
ngx_str_t url;
ngx_log_t log;
ngx_rtmp_session_t *session;
ngx_rtmp_relay_ctx_t *publish;
ngx_rtmp_relay_ctx_t *play;
ngx_rtmp_relay_ctx_t *next;
unsigned relay:1;
};
typedef struct {
ngx_array_t targets;
ngx_log_t *log;
ngx_uint_t nbuckets;
ngx_msec_t buflen;
ngx_rtmp_relay_ctx_t **ctx;
} ngx_rtmp_relay_app_conf_t;
#define NGX_RTMP_RELAY_CONNECT_TRANS 1
#define NGX_RTMP_RELAY_CREATE_STREAM_TRANS 2
#define NGX_RTMP_RELAY_CSID_AMF_INI 3
#define NGX_RTMP_RELAY_CSID_AMF 5
#define NGX_RTMP_RELAY_MSID 1
/*
push remoteapp mystream 192.168.0.10
push mystream 192.168.0.10
push 192.168.0.10
*/
static ngx_command_t ngx_rtmp_relay_commands[] = {
{ ngx_string("push"),
NGX_RTMP_APP_CONF|NGX_CONF_TAKE1|NGX_CONF_TAKE2|NGX_CONF_TAKE3,
ngx_rtmp_relay_push_pull,
NGX_RTMP_APP_CONF_OFFSET,
0,
NULL },
{ ngx_string("pull"),
NGX_RTMP_APP_CONF|NGX_CONF_TAKE1|NGX_CONF_TAKE2|NGX_CONF_TAKE3,
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_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 */
NULL, /* init process */
NULL, /* init thread */
NULL, /* exit thread */
NULL, /* exit process */
NULL, /* exit master */
NGX_MODULE_V1_PADDING
};
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;
}
ngx_array_init(&racf->targets, cf->pool, 1, sizeof(ngx_rtmp_relay_target_t));
racf->nbuckets = 1024;
racf->log = &cf->cycle->new_log;
racf->buflen = NGX_CONF_UNSET;
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_msec_value(conf->buflen, prev->buflen, 5000);
return NGX_CONF_OK;
}
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 *app, ngx_str_t *name, ngx_url_t *url);
static ngx_rtmp_relay_ctx_t *
ngx_rtmp_relay_create_remote_ctx(ngx_rtmp_session_t *s, ngx_str_t *app,
ngx_str_t *name, ngx_url_t *url)
{
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_rtmp_relay_app_conf_t *racf;
ngx_peer_connection_t *pc;
ngx_connection_t *c;
ngx_pool_t *pool;
ngx_int_t rc;
racf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_relay_module);
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;
}
rctx->name.len = name->len;
rctx->name.data = ngx_palloc(pool, name->len);
if (rctx->name.data == NULL) {
goto clear;
}
ngx_memcpy(rctx->name.data, name->data, rctx->name.len);
rctx->app.len = app->len;
rctx->app.data = ngx_palloc(pool, app->len);
if (rctx->app.data == NULL) {
goto clear;
}
ngx_memcpy(rctx->app.data, app->data, app->len);
rctx->url.len = url->url.len;
rctx->url.data = ngx_palloc(pool, rctx->url.len);
if (rctx->url.data == NULL) {
goto clear;
}
ngx_memcpy(rctx->url.data, url->url.data, url->url.len);
rctx->relay = 1;
pc = ngx_pcalloc(pool, sizeof(ngx_peer_connection_t));
if (pc == NULL) {
goto clear;
}
/* 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 = &url->host;
pc->socklen = url->socklen;
pc->sockaddr = (struct sockaddr *)ngx_palloc(pool, pc->socklen);
if (pc->sockaddr == NULL) {
goto clear;
}
ngx_memcpy(pc->sockaddr, &url->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;
c->addr_text = rctx->url;
addr_conf = ngx_pcalloc(pool, sizeof(ngx_rtmp_addr_conf_t));
if (addr_conf == NULL) {
goto clear;
}
addr_ctx = ngx_pcalloc(pool, sizeof(ngx_rtmp_conf_ctx_t));
if (addr_ctx == NULL) {
goto clear;
}
addr_conf->ctx = addr_ctx;
addr_ctx->main_conf = s->main_conf;
addr_ctx->srv_conf = s->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 = s->app_conf;
rctx->session = rs;
ngx_rtmp_set_ctx(rs, rctx, ngx_rtmp_relay_module);
ngx_str_set(&rs->flashver, "ngx-local-relay");
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_local_ctx(ngx_rtmp_session_t *s, ngx_str_t *app,
ngx_str_t *name, ngx_url_t *url)
{
ngx_rtmp_relay_ctx_t *ctx;
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;
if (ctx->publish) {
return NULL;
}
ctx->name.len = name->len;
ctx->name.data = ngx_palloc(s->connection->pool, name->len);
if (ctx->name.data == NULL) {
return NULL;
}
ngx_memcpy(ctx->name.data, name->data, ctx->name.len);
ctx->app.len = app->len;
ctx->app.data = ngx_palloc(s->connection->pool, app->len);
if (ctx->app.data == NULL) {
return NULL;
}
ngx_memcpy(ctx->app.data, app->data, app->len);
return ctx;
}
static ngx_int_t
ngx_rtmp_relay_create(ngx_rtmp_session_t *s, ngx_str_t *app,
ngx_str_t *name, ngx_url_t *url,
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, app, name, url);
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, app, name, url);
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 *app, ngx_str_t *name,
ngx_url_t *url)
{
ngx_log_debug3(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"relay: create pull app='%V' name='%V' url='%V'",
app, name, url);
return ngx_rtmp_relay_create(s, app, name, url,
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 *app, ngx_str_t *name,
ngx_url_t *url)
{
ngx_log_debug3(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"relay: create push app='%V' name='%V' url='%V'",
app, name, url);
return ngx_rtmp_relay_create(s, app, name, url,
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;
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 && ctx->relay) {
goto next;
}
racf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_relay_module);
if (racf == NULL || racf->targets.nelts == 0) {
goto next;
}
name.len = ngx_strlen(v->name);
name.data = v->name;
target = racf->targets.elts;
for (n = 0; n < racf->targets.nelts; ++n, ++target) {
if (target->push
&& (target->name.len == 0
|| (name.len == target->name.len
&& !ngx_memcmp(name.data, target->name.data, name.len))))
{
if (ngx_rtmp_relay_push(s, &target->app, &name, &target->url)
!= NGX_OK)
{
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"relay: push failed app='%V' name='%V' url='%V'",
&target->app, &target->name, &target->url.url);
}
}
}
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;
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 && ctx->relay) {
goto next;
}
racf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_relay_module);
if (racf == NULL || racf->targets.nelts == 0) {
goto next;
}
name.len = ngx_strlen(v->name);
name.data = v->name;
target = racf->targets.elts;
for (n = 0; n < racf->targets.nelts; ++n, ++target) {
if (!target->push
&& (target->name.len == 0
|| (name.len == target->name.len
&& !ngx_memcmp(name.data, target->name.data, name.len))))
{
if (ngx_rtmp_relay_pull(s, &target->app, &name, &target->url)
!= NGX_OK)
{
ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
"relay: pull failed app='%V' name='%V' url='%V'",
&target->app, &target->name, &target->url.url);
}
break;
}
}
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("flashVer"),
"LNX.11,1,102,55", 0 },
/*"ngx-remote-relay", 0 },*/ /*TODO*/
{ 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_srv_conf_t *cscf;
ngx_rtmp_relay_ctx_t *ctx;
ngx_rtmp_header_t h;
size_t len;
u_char *p;
cscf = ngx_rtmp_get_module_srv_conf(s, ngx_rtmp_core_module);
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_relay_module);
if (ctx == NULL) {
return NGX_ERROR;
}
out_cmd[0].data = ctx->app.data;
out_cmd[0].len = ctx->app.len;
/* create good tcUrl; FMS needs it */
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);
p = ngx_cpymem(p, ctx->url.data, ctx->url.len);
*p++ = '/';
p = ngx_cpymem(p, ctx->app.data, ctx->app.len);
out_cmd[1].len = p - (u_char *)out_cmd[1].data;
ngx_memzero(&h, sizeof(h));
h.csid = NGX_RTMP_RELAY_CSID_AMF_INI;
h.type = NGX_RTMP_MSG_AMF_CMD;
return ngx_rtmp_send_chunk_size(s, cscf->chunk_size) != NGX_OK
|| ngx_rtmp_send_ack_size(s, cscf->ack_window) != NGX_OK
|| ngx_rtmp_send_amf(s, &h, out_elts,
sizeof(out_elts) / sizeof(out_elts[0])) != NGX_OK
? NGX_ERROR
: NGX_OK;
}
static ngx_int_t
ngx_rtmp_relay_send_create_stream(ngx_rtmp_session_t *s)
{
static double trans = NGX_RTMP_RELAY_CREATE_STREAM_TRANS;
static ngx_rtmp_amf_elt_t out_elts[] = {
{ NGX_RTMP_AMF_STRING,
ngx_null_string,
"createStream", 0 },
{ NGX_RTMP_AMF_NUMBER,
ngx_null_string,
&trans, 0 },
{ NGX_RTMP_AMF_NULL,
ngx_null_string,
NULL, 0 }
};
ngx_rtmp_header_t h;
ngx_memzero(&h, sizeof(h));
h.csid = NGX_RTMP_RELAY_CSID_AMF_INI;
h.type = NGX_RTMP_MSG_AMF_CMD;
return ngx_rtmp_send_amf(s, &h, out_elts,
sizeof(out_elts) / sizeof(out_elts[0]));
}
static ngx_int_t
ngx_rtmp_relay_send_publish(ngx_rtmp_session_t *s)
{
static double trans;
static ngx_rtmp_amf_elt_t out_elts[] = {
{ NGX_RTMP_AMF_STRING,
ngx_null_string,
"publish", 0 },
{ NGX_RTMP_AMF_NUMBER,
ngx_null_string,
&trans, 0 },
{ NGX_RTMP_AMF_NULL,
ngx_null_string,
NULL, 0 },
{ NGX_RTMP_AMF_STRING,
ngx_null_string,
NULL, 0 }, /* <- to fill */
{ NGX_RTMP_AMF_STRING,
ngx_null_string,
"live", 0 }
};
ngx_rtmp_header_t h;
ngx_rtmp_relay_ctx_t *ctx;
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_relay_module);
if (ctx == NULL) {
return NGX_ERROR;
}
out_elts[3].data = ctx->name.data;
out_elts[3].len = ctx->name.len;
ngx_memzero(&h, sizeof(h));
h.csid = NGX_RTMP_RELAY_CSID_AMF;
h.msid = NGX_RTMP_RELAY_MSID;
h.type = NGX_RTMP_MSG_AMF_CMD;
return ngx_rtmp_send_amf(s, &h, out_elts,
sizeof(out_elts) / sizeof(out_elts[0]));
}
static ngx_int_t
ngx_rtmp_relay_send_play(ngx_rtmp_session_t *s)
{
static double trans;
static ngx_rtmp_amf_elt_t out_elts[] = {
{ NGX_RTMP_AMF_STRING,
ngx_null_string,
"play", 0 },
{ NGX_RTMP_AMF_NUMBER,
ngx_null_string,
&trans, 0 },
{ NGX_RTMP_AMF_NULL,
ngx_null_string,
NULL, 0 },
{ NGX_RTMP_AMF_STRING,
ngx_null_string,
NULL, 0 }, /* <- to fill */
};
ngx_rtmp_header_t h;
ngx_rtmp_relay_ctx_t *ctx;
ngx_rtmp_relay_app_conf_t *racf;
racf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_relay_module);
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_relay_module);
if (racf == NULL || ctx == NULL) {
return NGX_ERROR;
}
out_elts[3].data = ctx->name.data;
out_elts[3].len = ctx->name.len;
ngx_memzero(&h, sizeof(h));
h.csid = NGX_RTMP_RELAY_CSID_AMF;
h.msid = NGX_RTMP_RELAY_MSID;
h.type = NGX_RTMP_MSG_AMF_CMD;
return ngx_rtmp_send_amf(s, &h, out_elts,
sizeof(out_elts) / sizeof(out_elts[0])) != NGX_OK
|| ngx_rtmp_send_user_set_buflen(s, NGX_RTMP_RELAY_MSID,
racf->buflen) != NGX_OK
? NGX_ERROR
: NGX_OK;
}
static ngx_int_t
ngx_rtmp_relay_on_result(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
ngx_chain_t *in)
{
ngx_rtmp_relay_ctx_t *ctx;
static struct {
double trans;
u_char level[32];
u_char code[128];
u_char desc[1024];
} v;
static ngx_rtmp_amf_elt_t in_inf[] = {
{ NGX_RTMP_AMF_STRING,
ngx_string("level"),
&v.level, sizeof(v.level) },
{ NGX_RTMP_AMF_STRING,
ngx_string("code"),
&v.code, sizeof(v.code) },
{ NGX_RTMP_AMF_STRING,
ngx_string("description"),
&v.desc, sizeof(v.desc) },
};
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_OBJECT,
ngx_null_string,
in_inf, sizeof(in_inf) },
};
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_relay_module);
if (ctx == NULL || !ctx->relay) {
return NGX_OK;
}
ngx_memzero(&v, sizeof(v));
if (ngx_rtmp_receive_amf(s, in, in_elts,
sizeof(in_elts) / sizeof(in_elts[0])))
{
return NGX_ERROR;
}
ngx_log_debug3(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"relay: _result: level='%s' code='%s' description='%s'",
v.level, v.code, v.desc);
switch ((ngx_int_t)v.trans) {
case NGX_RTMP_RELAY_CONNECT_TRANS:
return ngx_rtmp_relay_send_create_stream(s);
case NGX_RTMP_RELAY_CREATE_STREAM_TRANS:
if (ctx->publish != ctx) {
if (ngx_rtmp_relay_send_publish(s) != NGX_OK) {
return NGX_ERROR;
}
return ngx_rtmp_relay_play_local(s);
} else {
if (ngx_rtmp_relay_send_play(s) != NGX_OK) {
return NGX_ERROR;
}
return ngx_rtmp_relay_publish_local(s);
}
default:
return NGX_OK;
}
}
static ngx_int_t
ngx_rtmp_relay_on_error(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
ngx_chain_t *in)
{
ngx_rtmp_relay_ctx_t *ctx;
static struct {
double trans;
u_char level[32];
u_char code[128];
u_char desc[1024];
} v;
static ngx_rtmp_amf_elt_t in_inf[] = {
{ NGX_RTMP_AMF_STRING,
ngx_string("level"),
&v.level, sizeof(v.level) },
{ NGX_RTMP_AMF_STRING,
ngx_string("code"),
&v.code, sizeof(v.code) },
{ NGX_RTMP_AMF_STRING,
ngx_string("description"),
&v.desc, sizeof(v.desc) },
};
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_OBJECT,
ngx_null_string,
in_inf, sizeof(in_inf) },
};
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_relay_module);
if (ctx == NULL || !ctx->relay) {
return NGX_OK;
}
ngx_memzero(&v, sizeof(v));
if (ngx_rtmp_receive_amf(s, in, in_elts,
sizeof(in_elts) / sizeof(in_elts[0])))
{
return NGX_ERROR;
}
ngx_log_debug3(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"relay: _error: level='%s' code='%s' description='%s'",
v.level, v.code, v.desc);
return NGX_OK;
}
static ngx_int_t
ngx_rtmp_relay_on_status(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
ngx_chain_t *in)
{
ngx_rtmp_relay_ctx_t *ctx;
static struct {
double trans;
u_char level[32];
u_char code[128];
u_char desc[1024];
} v;
static ngx_rtmp_amf_elt_t in_inf[] = {
{ NGX_RTMP_AMF_STRING,
ngx_string("level"),
&v.level, sizeof(v.level) },
{ NGX_RTMP_AMF_STRING,
ngx_string("code"),
&v.code, sizeof(v.code) },
{ NGX_RTMP_AMF_STRING,
ngx_string("description"),
&v.desc, sizeof(v.desc) },
};
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_OBJECT,
ngx_null_string,
in_inf, sizeof(in_inf) },
};
static ngx_rtmp_amf_elt_t in_elts_meta[] = {
{ NGX_RTMP_AMF_OBJECT,
ngx_null_string,
in_inf, sizeof(in_inf) },
};
ctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_relay_module);
if (ctx == NULL || !ctx->relay) {
return NGX_OK;
}
ngx_memzero(&v, sizeof(v));
if (h->type == NGX_RTMP_MSG_AMF_META) {
ngx_rtmp_receive_amf(s, in, in_elts_meta,
sizeof(in_elts_meta) / sizeof(in_elts_meta[0]));
} else {
ngx_rtmp_receive_amf(s, in, in_elts,
sizeof(in_elts) / sizeof(in_elts[0]));
}
ngx_log_debug3(NGX_LOG_DEBUG_RTMP, s->connection->log, 0,
"relay: onStatus: level='%s' code='%s' description='%s'",
v.level, v.code, v.desc);
return NGX_OK;
}
static ngx_int_t
ngx_rtmp_relay_handshake_done(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
ngx_chain_t *in)
{
ngx_rtmp_relay_ctx_t *ctx;