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ngx_hls_http_module.c
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ngx_hls_http_module.c
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/*
* Copyright (C) Pingo (cczjp89@gmail.com)
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
#include <ngx_rtmp.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <ngx_rtmp_cmd_module.h>
#include "ngx_http_set_header.h"
#include "ngx_mpegts_live_module.h"
#include "ngx_hls_live_module.h"
#include "ngx_rbuf.h"
#include "ngx_rtmp_dynamic.h"
#ifndef NGX_HTTP_GONE
#define NGX_HTTP_GONE 410
#endif
static ngx_keyval_t ngx_302_headers[] = {
{ ngx_string("Location"), ngx_null_string },
{ ngx_null_string, ngx_null_string }
};
static ngx_keyval_t ngx_m3u8_headers[] = {
{ ngx_string("Cache-Control"), ngx_string("no-cache") },
{ ngx_string("Content-Type"), ngx_string("application/vnd.apple.mpegurl") },
{ ngx_null_string, ngx_null_string }
};
static ngx_keyval_t ngx_ts_headers[] = {
{ ngx_string("Cache-Control"), ngx_string("no-cache") },
{ ngx_string("Content-Type"), ngx_string("video/mp2t") },
{ ngx_null_string, ngx_null_string }
};
typedef struct {
ngx_str_t app;
ngx_str_t name;
ngx_str_t stream;
ngx_str_t serverid;
ngx_str_t sid;
ngx_rtmp_session_t *session;
ngx_msec_t timeout;
ngx_uint_t content_pos;
ngx_chain_t *m3u8;
ngx_uint_t out_pos;
ngx_uint_t out_last;
ngx_chain_t *out_chain;
ngx_hls_live_frag_t *frag;
} ngx_hls_http_ctx_t;
typedef struct {
ngx_str_t app;
ngx_str_t flashver;
ngx_str_t swf_url;
ngx_str_t tc_url;
ngx_str_t page_url;
ngx_msec_t timeout;
ngx_rtmp_addr_conf_t *addr_conf;
} ngx_hls_http_loc_conf_t;
static u_char NGX_HLS_LIVE_ARG_SESSION[] = "session";
static ngx_int_t NGX_HLS_LIVE_ARG_SESSION_LENGTH = 7;
static void * ngx_hls_http_create_loc_conf(ngx_conf_t *cf);
static char * ngx_hls_http_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child);
static char * ngx_http_hls(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
//static char * ngx_hls_http_variant(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static ngx_int_t ngx_hls_http_postconfiguration(ngx_conf_t *cf);
static ngx_command_t ngx_hls_http_commands[] = {
{ ngx_string("hls2_live"),
NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_http_hls,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
ngx_null_command
};
static ngx_http_module_t ngx_hls_http_module_ctx = {
NULL, /* preconfiguration */
ngx_hls_http_postconfiguration, /* postconfiguration */
NULL, /* create main configuration */
NULL, /* init main configuration */
NULL, /* create server configuration */
NULL, /* merge server configuration */
ngx_hls_http_create_loc_conf, /* create location configuration */
ngx_hls_http_merge_loc_conf /* merge location configuration */
};
ngx_module_t ngx_hls_http_module = {
NGX_MODULE_V1,
&ngx_hls_http_module_ctx, /* module context */
ngx_hls_http_commands, /* module directives */
NGX_HTTP_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_hls_http_create_loc_conf(ngx_conf_t *cf)
{
ngx_hls_http_loc_conf_t *hlcf;
hlcf = ngx_pcalloc(cf->pool, sizeof(ngx_hls_http_loc_conf_t));
if (hlcf == NULL) {
return NULL;
}
return hlcf;
}
static char *
ngx_hls_http_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
{
ngx_hls_http_loc_conf_t *prev = parent;
ngx_hls_http_loc_conf_t *conf = child;
ngx_conf_merge_str_value(conf->app, prev->app, "");
ngx_conf_merge_str_value(conf->flashver, prev->flashver, "");
ngx_conf_merge_str_value(conf->swf_url, prev->swf_url, "");
ngx_conf_merge_str_value(conf->tc_url, prev->tc_url, "");
ngx_conf_merge_str_value(conf->page_url, prev->page_url, "");
return NGX_CONF_OK;
}
static ngx_int_t
ngx_hls_http_ctx_init(ngx_http_request_t *r, ngx_rtmp_addr_conf_t *addr_conf)
{
u_char *p, *e;
ngx_buf_t *buf;
ngx_rtmp_core_srv_conf_t *cscf;
ngx_hls_http_loc_conf_t *hlcf;
ngx_hls_http_ctx_t *ctx;
ngx_str_t *app, *name, *stream, *domain, *serverid;
ngx_int_t rc;
hlcf = ngx_http_get_module_loc_conf(r, ngx_hls_http_module);
ctx = ngx_http_get_module_ctx(r, ngx_hls_http_module);
app = &ctx->app;
name = &ctx->name;
stream = &ctx->stream;
serverid = &ctx->serverid;
domain = &r->headers_in.server;
p = r->uri.data;
e = r->uri.data + r->uri.len;
p++;
app->data = p;
p = ngx_strlchr(p, e, '/');
if (p == NULL) {
app->data = NULL;
app->len = 0;
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: ctx_init| invalid uri, lack of app");
return NGX_ERROR;
}
app->len = p - app->data;
if (hlcf->app.len > 0 && hlcf->app.data) {
*app = hlcf->app;
}
p++;
name->data = p;
if (ngx_strncmp(&e[-5], ".m3u8", 5) == 0) {
p = ngx_strlchr(p, e, '.');
} else if (ngx_strncmp(&e[-3], ".ts", 3) == 0) {
p = ngx_strlchr(p, e, '-');
} else {
p = NULL;
}
if (p == NULL) {
name->data = NULL;
name->len = 0;
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: ctx_init| invalid uri, lack of name");
return NGX_ERROR;
}
name->len = p - name->data;
cscf = addr_conf->default_server->
ctx->srv_conf[ngx_rtmp_core_module.ctx_index];
rc = ngx_rtmp_find_virtual_server(addr_conf->virtual_names, domain, &cscf);
if (rc != NGX_OK && rc != NGX_DECLINED) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: ctx_init| server(%V) not found.", domain);
return NGX_ERROR;
}
if (cscf && cscf->serverid.len) {
serverid->data = ngx_pcalloc(r->connection->pool, cscf->serverid.len);
if (serverid->data == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: ctx_init| pcalloc failed.");
return NGX_ERROR;
}
serverid->len = cscf->serverid.len;
ngx_memcpy(serverid->data, cscf->serverid.data, cscf->serverid.len);
} else {
*serverid = *domain;
}
buf = ngx_create_temp_buf(r->connection->pool,
serverid->len + 1 + app->len + name->len + 1);
buf->last = ngx_slprintf(buf->start, buf->end,
"%V/%V/%V", serverid, app, name);
stream->data = buf->pos;
stream->len = buf->last - buf->pos;
ngx_log_error(NGX_LOG_DEBUG, r->connection->log, 0,
"hls-http: ctx_init| hls stream (%V).", stream);
return NGX_OK;
}
static ngx_int_t
ngx_hls_http_send_header(ngx_http_request_t *r, ngx_uint_t status, ngx_keyval_t *h)
{
ngx_int_t rc;
r->headers_out.status = status;
// r->keepalive = 0; /* set Connection to closed */
//set eTag
if (ngx_http_set_etag(r) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
while (h && h->key.len) {
rc = ngx_http_set_header_out(r, &h->key, &h->value);
if (rc != NGX_OK) {
return rc;
}
++h;
}
return ngx_http_send_header(r);
}
static ngx_int_t
ngx_hls_http_master_m3u8_handler(ngx_http_request_t *r,
ngx_rtmp_addr_conf_t *addr_conf)
{
ngx_int_t rc;
ngx_str_t m3u8_url;
ngx_str_t host;
u_char sstr[NGX_RTMP_MAX_SESSION] = {0};
static ngx_uint_t sindex = 0;
ngx_str_t location = ngx_string("");
ngx_str_t uri;
ngx_str_t uri_tail;
ngx_buf_t *m3u8;
ngx_chain_t out;
host = r->headers_in.host->value;
rc = ngx_http_discard_request_body(r);
if (rc != NGX_OK) {
return rc;
}
*ngx_snprintf(sstr, sizeof(sstr) - 1, "%uDt-%uDi-%dp-%uDc",
time(NULL), sindex++, ngx_process_slot, r->connection->number) = 0;
ngx_http_arg(r, (u_char*)"location", 8, &location);
if (location.len == 0) {
uri = r->uri;
} else {
uri_tail.data =
ngx_strlchr(r->uri.data + 1, r->uri.data + r->uri.len - 1, '/');
if (uri_tail.data == NULL) {
uri_tail = r->uri;
} else {
uri_tail.len = r->uri.data+r->uri.len - uri_tail.data;
}
uri.len = location.len + uri_tail.len;
uri.data = ngx_pcalloc(r->pool, uri.len);
if (uri.data == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: master_m3u8_handler| pcalloc uri buffer failed");
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_snprintf(uri.data, uri.len, "%V%V", &location, &uri_tail);
}
m3u8_url.len = ngx_strlen("http://") +
host.len +
uri.len +
NGX_HLS_LIVE_ARG_SESSION_LENGTH + 2 +
ngx_strlen(sstr);
m3u8_url.data = ngx_pcalloc(r->connection->pool, m3u8_url.len);
ngx_snprintf(m3u8_url.data, m3u8_url.len, "http://%V%V?%s=%s",
&host, &uri, NGX_HLS_LIVE_ARG_SESSION, sstr);
m3u8 = ngx_create_temp_buf(r->connection->pool, 64 * 1024);
m3u8->memory = 1;
m3u8->flush = 1;
out.buf = m3u8;
out.next = NULL;
m3u8->last = ngx_snprintf(m3u8->pos, m3u8->end - m3u8->start,
"#EXTM3U\n"
"#EXT-X-STREAM-INF:BANDWIDTH=1,AVERAGE-BANDWIDTH=1\n"
//"#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1\n"
"%V\n", &m3u8_url);
r->headers_out.content_length_n = m3u8->last - m3u8->pos;
rc = ngx_hls_http_send_header(r, NGX_HTTP_OK, ngx_m3u8_headers);
if (rc != NGX_OK) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: master_m3u8_handler| "
"send header failed, redirect url: %V, rc=%d", &m3u8_url, rc);
} else {
ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
"hls-http: master_m3u8_handler| redirect url %V", &m3u8_url);
}
return ngx_http_output_filter(r, &out);
}
static ngx_int_t
ngx_hls_http_redirect_handler(ngx_http_request_t *r,
ngx_rtmp_addr_conf_t *addr_conf)
{
ngx_int_t rc;
ngx_str_t m3u8_url;
ngx_str_t host;
u_char sstr[NGX_RTMP_MAX_SESSION] = {0};
static ngx_uint_t sindex = 0;
ngx_str_t location = ngx_string("");
ngx_str_t uri;
ngx_str_t uri_tail;
host = r->headers_in.host->value;
rc = ngx_http_discard_request_body(r);
if (rc != NGX_OK) {
return rc;
}
*ngx_snprintf(sstr, sizeof(sstr) - 1, "%uDt-%uDi-%dp-%uDc",
time(NULL), sindex++, ngx_process_slot, r->connection->number) = 0;
ngx_http_arg(r, (u_char*)"location", 8, &location);
if (location.len == 0) {
uri = r->uri;
} else {
uri_tail.data =
ngx_strlchr(r->uri.data + 1, r->uri.data + r->uri.len - 1, '/');
if (uri_tail.data == NULL) {
uri_tail = r->uri;
} else {
uri_tail.len = r->uri.data+r->uri.len - uri_tail.data;
}
uri.len = location.len + uri_tail.len;
uri.data = ngx_pcalloc(r->pool, uri.len);
if (uri.data == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: redirect_handler| pcalloc uri buffer failed");
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_snprintf(uri.data, uri.len, "%V%V", &location, &uri_tail);
}
m3u8_url.len = ngx_strlen("http://") +
host.len +
uri.len +
NGX_HLS_LIVE_ARG_SESSION_LENGTH + 2 +
ngx_strlen(sstr);
m3u8_url.data = ngx_pcalloc(r->connection->pool, m3u8_url.len);
ngx_snprintf(m3u8_url.data, m3u8_url.len, "http://%V%V?%s=%s",
&host, &uri, NGX_HLS_LIVE_ARG_SESSION, sstr);
ngx_http_set_header_out(r, &ngx_302_headers[0].key, &m3u8_url);
r->headers_out.content_length_n = 0;
r->header_only = 1;
rc = ngx_hls_http_send_header(r, NGX_HTTP_MOVED_TEMPORARILY, NULL);
if (rc != NGX_OK) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: redirect_handler| "
"send header failed, redirect url: %V, rc=%d", &m3u8_url, rc);
} else {
ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
"hls-http: redirect_handler| redirect url %V", &m3u8_url);
}
return rc;
}
static ngx_hls_http_ctx_t *
ngx_hls_http_create_ctx(ngx_http_request_t *r, ngx_rtmp_addr_conf_t *addr_conf)
{
ngx_hls_http_ctx_t *ctx;
ngx_rtmp_core_srv_conf_t *cscf;
u_char *p;
cscf = addr_conf->default_server->ctx->
srv_conf[ngx_rtmp_core_module.ctx_index];
ctx = ngx_http_get_module_ctx(r, ngx_hls_http_module);
if (ctx == NULL) {
p = ngx_pcalloc(r->connection->pool, sizeof(ngx_hls_http_ctx_t));
if (p == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: create_ctx| alloc hls live ctx failed");
return NULL;
}
ctx = (ngx_hls_http_ctx_t *)p;
ngx_http_set_ctx(r, ctx, ngx_hls_http_module);
}
ctx->timeout = cscf->timeout;
ngx_hls_http_ctx_init(r, addr_conf);
if (ctx->app.len == 0 || ctx->name.len == 0) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: create_ctx| parse app or name failed, uri %V", &r->uri);
return NULL;
}
ngx_http_arg(r, NGX_HLS_LIVE_ARG_SESSION, NGX_HLS_LIVE_ARG_SESSION_LENGTH,
&ctx->sid);
return ctx;
}
static void
ngx_hls_http_cleanup(void *data)
{
ngx_http_request_t *r;
ngx_hls_http_ctx_t *ctx;
ngx_chain_t *cl;
r = data;
ctx = ngx_http_get_module_ctx(r, ngx_hls_http_module);
if (!ctx) {
return;
}
if (ctx->out_chain == NULL) {
cl = ctx->out_chain;
while (cl) {
ctx->out_chain = cl->next;
ngx_put_chainbuf(cl);
cl = ctx->out_chain;
}
}
ctx->content_pos = 0;
if (ctx->session) {
ctx->session->request = NULL;
ctx->session->connection = NULL;
}
ngx_log_error(NGX_LOG_DEBUG, r->connection->log, 0,
"hls-http: cleanup_handler| http cleanup");
if (ctx->frag) {
ngx_log_error(NGX_LOG_DEBUG, r->connection->log, 0,
"hls-http: cleanup_handler| free frag[%p]", ctx->frag);
ngx_hls_live_free_frag(ctx->frag);
ctx->frag = NULL;
}
}
static ngx_int_t
ngx_hls_http_parse(ngx_http_request_t *r, ngx_rtmp_session_t *s,
ngx_rtmp_play_t *v)
{
ngx_hls_http_loc_conf_t *hlcf;
size_t tcurl_len;
u_char *p;
ngx_hls_http_ctx_t *ctx;
ctx = ngx_http_get_module_ctx(r, ngx_hls_http_module);
hlcf = ngx_http_get_module_loc_conf(r, ngx_hls_http_module);
#define NGX_HLS_HTTP_SET_VAL(_val) \
s->_val.data = ngx_pcalloc(s->pool, ctx->_val.len); \
s->_val.len = ctx->_val.len; \
ngx_memcpy(s->_val.data, ctx->_val.data, ctx->_val.len)
NGX_HLS_HTTP_SET_VAL(app);
NGX_HLS_HTTP_SET_VAL(stream);
#undef NGX_HLS_HTTP_SET_VAL
if (ngx_http_arg(r, (u_char *) "flashver", 8, &s->flashver) != NGX_OK) {
s->flashver = hlcf->flashver;
}
/* tc_url */
#if (NGX_HTTP_SSL)
if (r->connection->ssl) {
tcurl_len = sizeof("https://") - 1;
} else
#endif
{
tcurl_len = sizeof("http://") - 1;
}
tcurl_len += r->headers_in.server.len + 1 + s->app.len;
s->tc_url.len = tcurl_len;
s->tc_url.data = ngx_pcalloc(r->pool, tcurl_len);
if (s->tc_url.data == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
p = s->tc_url.data;
#if (NGX_HTTP_SSL)
if (r->connection->ssl) {
p = ngx_cpymem(p, "https://", sizeof("https://") - 1);
} else
#endif
{
p = ngx_cpymem(p, "http://", sizeof("http://") - 1);
}
p = ngx_cpymem(p, r->headers_in.server.data, r->headers_in.server.len);
*p++ = '/';
p = ngx_cpymem(p, s->app.data, s->app.len);
/* page_url */
if (r->headers_in.referer) {
s->page_url = r->headers_in.referer->value;
} else {
s->page_url = hlcf->page_url;
}
s->acodecs = 0x0DF7;
s->vcodecs = 0xFC;
ngx_memcpy(v->name, ctx->name.data, ctx->name.len);
if (r->args.len) {
ngx_memcpy(v->args, r->args.data,
ngx_min(r->args.len, NGX_RTMP_MAX_ARGS));
}
ngx_memcpy(v->session, ctx->sid.data, ctx->sid.len);
ngx_rtmp_cmd_middleware_init(s);
return NGX_OK;
}
static ngx_rtmp_session_t*
ngx_hls_http_create_session(ngx_http_request_t *r)
{
ngx_hls_http_loc_conf_t *hlcf;
ngx_rtmp_session_t *s;
ngx_rtmp_play_t v;
ngx_int_t rc;
ngx_uint_t n;
ngx_rtmp_core_srv_conf_t *cscf;
ngx_rtmp_core_app_conf_t **cacfp;
hlcf = ngx_http_get_module_loc_conf(r, ngx_hls_http_module);
/* create fake session */
s = ngx_rtmp_create_session(hlcf->addr_conf);
if (s == NULL) {
ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
"hls-http: create_session| create session failed");
return NULL;
}
/* get host, app, stream name */
ngx_memzero(&v, sizeof(ngx_rtmp_play_t));
rc = ngx_hls_http_parse(r, s, &v);
if (rc != NGX_OK) {
return NULL;
}
if (ngx_rtmp_set_virtual_server(s, &s->domain)) {
ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
"hls-http: create_session| set virtual server failed, %V",
&s->domain);
return NULL;
}
cscf = ngx_rtmp_get_module_srv_conf(s, ngx_rtmp_core_module);
s->log->connection = r->connection->number;
s->number = r->connection->number;
s->live_type = NGX_HLS_LIVE;
s->live_server = ngx_live_create_server(&s->serverid);
s->remote_addr_text.data = ngx_pcalloc(s->pool, r->connection->addr_text.len);
s->remote_addr_text.len = r->connection->addr_text.len;
ngx_memcpy(s->remote_addr_text.data,
r->connection->addr_text.data, r->connection->addr_text.len);
v.silent = 1;
cacfp = cscf->applications.elts;
for (n = 0; n < cscf->applications.nelts; ++n, ++cacfp) {
if ((*cacfp)->name.len == s->app.len &&
ngx_strncmp((*cacfp)->name.data, s->app.data, s->app.len) == 0)
{
/* found app! */
s->app_conf = (*cacfp)->app_conf;
break;
}
}
if (s->app_conf == NULL) {
if (cscf->default_app == NULL || cscf->default_app->app_conf == NULL) {
ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
"hls-http: create_session| application not found '%V'", &s->app);
ngx_rtmp_finalize_fake_session(s);
return NULL;
}
s->app_conf = cscf->default_app->app_conf;
}
s->stage = NGX_LIVE_PLAY;
s->ptime = ngx_current_msec;
// s->connection = r->connection;
if (ngx_rtmp_play_filter(s, &v) != NGX_OK) {
return NULL;
}
ngx_add_timer(r->connection->write, s->timeout);
return s;
}
static ngx_int_t
ngx_hls_http_m3u8_handler(ngx_http_request_t *r, ngx_rtmp_addr_conf_t *addr_conf)
{
ngx_hls_http_ctx_t *ctx;
ngx_int_t rc;
ngx_rtmp_session_t *s;
ngx_chain_t *out;
ngx_buf_t *buf;
ctx = ngx_hls_http_create_ctx(r, addr_conf);
if (ctx == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: m3u8_handler| create ctx failed");
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
s = ngx_hls_live_fetch_session(&ctx->serverid, &ctx->stream, &ctx->sid);
if (s == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: m3u8_handler| hls session %V not found", &ctx->sid);
s = ngx_hls_http_create_session(r);
if (s == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: m3u8_handler| create hls session %V error",
&ctx->sid);
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
s->sockaddr = ngx_pcalloc(s->pool, sizeof(struct sockaddr));
ngx_memcpy(s->sockaddr, r->connection->sockaddr, sizeof(struct sockaddr));
}
s->request = r;
ctx->session = s;
if (!ctx->m3u8) {
ctx->m3u8 = ngx_pcalloc(r->connection->pool, sizeof(ngx_chain_t));
ctx->m3u8->buf = ngx_create_temp_buf(r->connection->pool, 1024*512);
}
out = ctx->m3u8;
buf = out->buf;
buf->last = buf->pos = buf->start;
buf->memory = 1;
buf->flush = 1;
// buf->last_in_chain = 1;
// buf->last_buf = 1;
rc = ngx_hls_live_write_playlist(s, buf, &r->headers_out.last_modified_time);
if (rc != NGX_OK) {
goto again;
}
r->headers_out.content_length_n = buf->last - buf->pos;
s->out_bytes += r->headers_out.content_length_n;
if (!r->header_sent) {
rc = ngx_hls_http_send_header(r, NGX_HTTP_OK, ngx_m3u8_headers);
if (rc != NGX_OK) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: m3u8_handler| send http header failed");
return rc;
}
}
rc = ngx_http_output_filter(r, out);
if (rc != NGX_OK) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: m3u8_handler| send http content failed");
return rc;
}
return rc;
again:
r->count++;
return NGX_DONE;
}
static u_char*
ngx_hls_http_strrchr(ngx_str_t *str, u_char c)
{
u_char *s, *e;
s = str->data;
e = str->data + str->len;
e--;
while(e != s) {
if (*e == c) {
break;
}
e--;
}
if (e == s) {
return NULL;
}
return e;
}
static ngx_int_t
ngx_hls_http_parse_frag(ngx_http_request_t *r, ngx_str_t *name)
{
u_char *s, *e;
e = ngx_hls_http_strrchr(&r->uri, '?');
if (e == NULL) {
e = r->uri.data + r->uri.len;
}
s = ngx_hls_http_strrchr(&r->uri, '/');
if (s == NULL) {
s = r->uri.data;
} else {
s++;
}
name->data = s;
name->len = e - s;
return NGX_OK;
}
static ngx_chain_t *
ngx_hls_http_prepare_out_chain(ngx_http_request_t *r, ngx_int_t nframes)
{
ngx_hls_http_ctx_t *ctx;
ngx_hls_live_frag_t *frag;
ngx_rtmp_session_t *s;
ngx_chain_t *out, *cl, **ll;
ngx_mpegts_frame_t *frame;
ngx_int_t i = 0;
ctx = ngx_http_get_module_ctx(r, ngx_hls_http_module);
s = ctx->session;
frag = ctx->frag;
out = NULL;
ll = &out;
while (i < nframes && ctx->content_pos != frag->content_last) {
frame = frag->content[ctx->content_pos];
for (cl = frame->chain; cl; cl = cl->next) {
*ll = ngx_get_chainbuf(0, 0);
(*ll)->buf->pos = cl->buf->pos;
(*ll)->buf->last = cl->buf->last;
(*ll)->buf->flush = 1;
ll = &(*ll)->next;
}
*ll = NULL;
ctx->content_pos = ngx_hls_live_next(s, ctx->content_pos);
i++;
}
return out;
}
static void
ngx_hls_http_write_handler(ngx_http_request_t *r)
{
ngx_hls_http_ctx_t *ctx;
ngx_rtmp_session_t *s;
ngx_event_t *wev;
size_t present, sent;
ngx_int_t rc;
ngx_chain_t *cl;
wev = r->connection->write; //wev->handler = ngx_http_request_handler;
if (r->connection->destroyed) {
return;
}
ctx = ngx_http_get_module_ctx(r, ngx_hls_http_module);
s = ctx->session;
if (wev->timedout) {
ngx_log_error(NGX_LOG_INFO, s->log, NGX_ETIMEDOUT,
"hls_http: write_handler| client timed out");
r->connection->timedout = 1;
if (r->header_sent) {
ngx_http_finalize_request(r, NGX_HTTP_CLIENT_CLOSED_REQUEST);
} else {
r->error_page = 1;
ngx_http_finalize_request(r, NGX_HTTP_SERVICE_UNAVAILABLE);
}
return;
}
if (wev->timer_set) {
ngx_del_timer(wev);
}
if (ctx->out_chain == NULL) {
ctx->out_chain = ngx_hls_http_prepare_out_chain(r, 4);
}
rc = NGX_OK;
while (ctx->out_chain) {
present = r->connection->sent;
if (r->connection->buffered) {
rc = ngx_http_output_filter(r, NULL);
} else {
rc = ngx_http_output_filter(r, ctx->out_chain);
}
sent = r->connection->sent - present;
ngx_rtmp_update_bandwidth(&ngx_rtmp_bw_out, sent);
if (rc == NGX_AGAIN) {
ngx_add_timer(wev, s->timeout);
if (ngx_handle_write_event(wev, 0) != NGX_OK) {
ngx_log_error(NGX_LOG_ERR, s->log, ngx_errno,
"hls_http: write_handler| handle write event failed");
ngx_http_finalize_request(r, NGX_ERROR);
}
return;
}
if (rc == NGX_ERROR) {
ngx_log_error(NGX_LOG_ERR, s->log, ngx_errno,
"hls_http: write_handler| send error");
ngx_http_finalize_request(r, NGX_ERROR);
return;
}
/* NGX_OK */
cl = ctx->out_chain;
while (cl) {
ctx->out_chain = cl->next;
ngx_put_chainbuf(cl);
cl = ctx->out_chain;
}
if (ctx->frag->content_pos == ctx->frag->content_last) {
ctx->out_chain = NULL;
break;
}
ctx->out_chain = ngx_hls_http_prepare_out_chain(r, 4);
}
if (wev->active) {
ngx_del_event(wev, NGX_WRITE_EVENT, 0);
}
ngx_http_finalize_request(r, NGX_HTTP_OK);
}
static ngx_int_t
ngx_hls_http_ts_handler(ngx_http_request_t *r, ngx_rtmp_addr_conf_t *addr_conf)
{
ngx_hls_http_ctx_t *ctx;
ngx_rtmp_session_t *s;
ngx_hls_live_frag_t *frag;
ngx_int_t rc;
ngx_str_t name;
ctx = ngx_hls_http_create_ctx(r, addr_conf);
if (ctx == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: ts_handler| create ctx failed");
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
s = ngx_hls_live_fetch_session(&ctx->serverid, &ctx->stream, &ctx->sid);
if (s == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: ts_handler| hls session %V not found", &ctx->sid);
return NGX_DECLINED;
}
ctx->session = s;
s->request = r;
// ngx_rtmp_set_combined_log(s, r->connection->log->data,
// r->connection->log->handler);
rc = ngx_hls_http_parse_frag(r, &name);
if (rc != NGX_OK) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: ts_handler| parse frag args failed %V", &r->uri);
return NGX_HTTP_NOT_ALLOWED;
}
frag = ngx_hls_live_find_frag(s, &name);
if (frag == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"hls-http: ts_handler| ts not found, %V", &r->uri);
return NGX_HTTP_NOT_FOUND;
}
ctx->frag = frag;
r->headers_out.content_length_n = frag->length;