int SrsHttpApi::process_request(ISrsHttpResponseWriter* w, ISrsHttpMessage* r)
{
int ret = ERROR_SUCCESS;
SrsHttpMessage* hm = dynamic_cast<SrsHttpMessage*>(r);
srs_assert(hm);
srs_trace("HTTP API %s %s, content-length=%"PRId64", chunked=%d/%d",
r->method_str().c_str(), r->url().c_str(), r->content_length(),
hm->is_chunked(), hm->is_infinite_chunked());
// method is OPTIONS and enable crossdomain, required crossdomain header.
if (r->is_http_options() && _srs_config->get_http_api_crossdomain()) {
crossdomain_required = true;
}
// whenever crossdomain required, set crossdomain header.
if (crossdomain_required) {
w->header()->set("Access-Control-Allow-Origin", "*");
w->header()->set("Access-Control-Allow-Methods", "GET, POST, HEAD, PUT, DELETE");
w->header()->set("Access-Control-Allow-Headers", "Cache-Control,X-Proxy-Authorization,X-Requested-With,Content-Type");
}
// handle the http options.
if (r->is_http_options()) {
w->header()->set_content_length(0);
if (_srs_config->get_http_api_crossdomain()) {
w->write_header(SRS_CONSTS_HTTP_OK);
} else {
w->write_header(SRS_CONSTS_HTTP_MethodNotAllowed);
}
return w->final_request();
}
// use default server mux to serve http request.
if ((ret = mux->serve_http(w, r)) != ERROR_SUCCESS) {
if (!srs_is_client_gracefully_close(ret)) {
srs_error("serve http msg failed. ret=%d", ret);
}
return ret;
}
return ret;
}
int SrsHttpConn::do_cycle()
{
int ret = ERROR_SUCCESS;
if ((ret = get_peer_ip()) != ERROR_SUCCESS) {
srs_error("get peer ip failed. ret=%d", ret);
return ret;
}
srs_trace("http get peer ip success. ip=%s", ip);
// initialize parser
if ((ret = parser->initialize(HTTP_REQUEST)) != ERROR_SUCCESS) {
srs_error("http initialize http parser failed. ret=%d", ret);
return ret;
}
// underlayer socket
SrsSocket skt(stfd);
// process http messages.
for (;;) {
SrsHttpMessage* req = NULL;
// get a http message
if ((ret = parser->parse_message(&skt, &req)) != ERROR_SUCCESS) {
return ret;
}
// if SUCCESS, always NOT-NULL and completed message.
srs_assert(req);
srs_assert(req->is_complete());
// always free it in this scope.
SrsAutoFree(SrsHttpMessage, req, false);
// ok, handle http request.
if ((ret = process_request(&skt, req)) != ERROR_SUCCESS) {
return ret;
}
}
return ret;
}
int SrsLiveStream::http_hooks_on_play(ISrsHttpMessage* r)
{
int ret = ERROR_SUCCESS;
#ifdef SRS_AUTO_HTTP_CALLBACK
if (!_srs_config->get_vhost_http_hooks_enabled(req->vhost)) {
return ret;
}
// Create request to report for the specified connection.
SrsHttpMessage* hr = dynamic_cast<SrsHttpMessage*>(r);
SrsRequest* nreq = hr->to_request(req->vhost);
SrsAutoFree(SrsRequest, nreq);
// the http hooks will cause context switch,
// so we must copy all hooks for the on_connect may freed.
// @see https://github.com/ossrs/srs/issues/475
vector<string> hooks;
if (true) {
SrsConfDirective* conf = _srs_config->get_vhost_on_play(nreq->vhost);
if (!conf) {
srs_info("ignore the empty http callback: on_play");
return ret;
}
hooks = conf->args;
}
for (int i = 0; i < (int)hooks.size(); i++) {
std::string url = hooks.at(i);
if ((ret = SrsHttpHooks::on_play(url, nreq)) != ERROR_SUCCESS) {
srs_error("hook client on_play failed. url=%s, ret=%d", url.c_str(), ret);
return ret;
}
}
#endif
return ret;
}
int SrsHttpParser::parse_message(SrsStSocket* skt, SrsConnection* conn, ISrsHttpMessage** ppmsg)
{
*ppmsg = NULL;
int ret = ERROR_SUCCESS;
// reset request data.
field_name = "";
field_value = "";
expect_field_name = true;
state = SrsHttpParseStateInit;
header = http_parser();
url = "";
headers.clear();
header_parsed = 0;
// do parse
if ((ret = parse_message_imp(skt)) != ERROR_SUCCESS) {
if (!srs_is_client_gracefully_close(ret)) {
srs_error("parse http msg failed. ret=%d", ret);
}
return ret;
}
// create msg
SrsHttpMessage* msg = new SrsHttpMessage(skt, conn);
// initalize http msg, parse url.
if ((ret = msg->update(url, &header, buffer, headers)) != ERROR_SUCCESS) {
srs_error("initialize http msg failed. ret=%d", ret);
srs_freep(msg);
return ret;
}
// parse ok, return the msg.
*ppmsg = msg;
return ret;
}
int SrsHttpClient::post(SrsHttpUri* uri, string req, string& res)
{
res = "";
int ret = ERROR_SUCCESS;
if (!parser) {
parser = new SrsHttpParser();
if ((ret = parser->initialize(HTTP_RESPONSE)) != ERROR_SUCCESS) {
srs_error("initialize parser failed. ret=%d", ret);
return ret;
}
}
if ((ret = connect(uri)) != ERROR_SUCCESS) {
srs_error("http connect server failed. ret=%d", ret);
return ret;
}
// send POST request to uri
// POST %s HTTP/1.1\r\nHost: %s\r\nContent-Length: %d\r\n\r\n%s
std::stringstream ss;
ss << "POST " << uri->get_path() << " "
<< "HTTP/1.1" << __CRLF
<< "Host: " << uri->get_host() << __CRLF
<< "Connection: Keep-Alive" << __CRLF
<< "Content-Length: " << std::dec << req.length() << __CRLF
<< "User-Agent: " << RTMP_SIG_SRS_NAME << RTMP_SIG_SRS_VERSION << __CRLF
<< "Content-Type: text/html" << __CRLF
<< __CRLF
<< req;
SrsSocket skt(stfd);
std::string data = ss.str();
if ((ret = skt.write(data.c_str(), data.length(), NULL)) != ERROR_SUCCESS) {
// disconnect when error.
disconnect();
srs_error("write http post failed. ret=%d", ret);
return ret;
}
SrsHttpMessage* msg = NULL;
if ((ret = parser->parse_message(&skt, &msg)) != ERROR_SUCCESS) {
srs_error("parse http post response failed. ret=%d", ret);
return ret;
}
srs_assert(msg);
srs_assert(msg->is_complete());
// get response body.
if (msg->body_size() > 0) {
res = msg->body();
}
srs_info("parse http post response success.");
return ret;
}
int SrsHttpStreamServer::hijack(ISrsHttpMessage* request, ISrsHttpHandler** ph)
{
int ret = ERROR_SUCCESS;
// when handler not the root, we think the handler is ok.
ISrsHttpHandler* h = *ph? *ph : NULL;
if (h && h->entry && h->entry->pattern != "/") {
return ret;
}
// only hijack for http streaming, http-flv/ts/mp3/aac.
std::string ext = request->ext();
if (ext.empty()) {
return ret;
}
// find the actually request vhost.
SrsConfDirective* vhost = _srs_config->get_vhost(request->host());
if (!vhost || !_srs_config->get_vhost_enabled(vhost)) {
return ret;
}
// find the entry template for the stream.
SrsLiveEntry* entry = NULL;
if (true) {
// no http streaming on vhost, ignore.
std::map<std::string, SrsLiveEntry*>::iterator it = tflvs.find(vhost->arg0());
if (it == tflvs.end()) {
return ret;
}
// hstrs not enabled, ignore.
// for origin, the http stream will be mount already when publish,
// so it must never enter this line for stream already mounted.
// for edge, the http stream is trigger by hstrs and mount by it,
// so we only hijack when only edge and hstrs is on.
entry = it->second;
if (!entry->hstrs) {
return ret;
}
// check entry and request extension.
if (entry->is_flv()) {
if (ext != ".flv") {
return ret;
}
} else if (entry->is_ts()) {
if (ext != ".ts") {
return ret;
}
} else if (entry->is_mp3()) {
if (ext != ".mp3") {
return ret;
}
} else if (entry->is_aac()) {
if (ext != ".aac") {
return ret;
}
} else {
return ret;
}
}
// convert to concreate class.
SrsHttpMessage* hreq = dynamic_cast<SrsHttpMessage*>(request);
srs_assert(hreq);
// hijack for entry.
SrsRequest* r = hreq->to_request(vhost->arg0());
SrsAutoFree(SrsRequest, r);
std::string sid = r->get_stream_url();
// check whether the http remux is enabled,
// for example, user disable the http flv then reload.
if (sflvs.find(sid) != sflvs.end()) {
SrsLiveEntry* s_entry = sflvs[sid];
if (!s_entry->stream->entry->enabled) {
// only when the http entry is disabled, check the config whether http flv disable,
// for the http flv edge use hijack to trigger the edge ingester, we always mount it
// eventhough the origin does not exists the specified stream.
if (!_srs_config->get_vhost_http_remux_enabled(r->vhost)) {
srs_error("stream is disabled, hijack failed. ret=%d", ret);
return ret;
}
}
}
SrsSource* s = SrsSource::fetch(r);
if (!s) {
if ((ret = SrsSource::create(r, server, server, &s)) != ERROR_SUCCESS) {
return ret;
}
}
srs_assert(s != NULL);
// create http streaming handler.
if ((ret = http_mount(s, r)) != ERROR_SUCCESS) {
return ret;
}
// use the handler if exists.
if (ph) {
if (sflvs.find(sid) != sflvs.end()) {
entry = sflvs[sid];
*ph = entry->stream;
}
}
// trigger edge to fetch from origin.
bool vhost_is_edge = _srs_config->get_vhost_is_edge(r->vhost);
srs_trace("hstrs: source url=%s, is_edge=%d, source_id=%d[%d]",
r->get_stream_url().c_str(), vhost_is_edge, s->source_id(), s->source_id());
return ret;
}
int SrsLiveStream::do_serve_http(ISrsHttpResponseWriter* w, ISrsHttpMessage* r)
{
int ret = ERROR_SUCCESS;
ISrsStreamEncoder* enc = NULL;
srs_assert(entry);
if (srs_string_ends_with(entry->pattern, ".flv")) {
w->header()->set_content_type("video/x-flv");
#ifdef SRS_PERF_FAST_FLV_ENCODER
bool realtime = _srs_config->get_realtime_enabled(req->vhost);
if (realtime) {
enc = new SrsFlvStreamEncoder();
} else {
enc = new SrsFastFlvStreamEncoder();
}
#else
enc = new SrsFlvStreamEncoder();
#endif
} else if (srs_string_ends_with(entry->pattern, ".aac")) {
w->header()->set_content_type("audio/x-aac");
enc = new SrsAacStreamEncoder();
} else if (srs_string_ends_with(entry->pattern, ".mp3")) {
w->header()->set_content_type("audio/mpeg");
enc = new SrsMp3StreamEncoder();
} else if (srs_string_ends_with(entry->pattern, ".ts")) {
w->header()->set_content_type("video/MP2T");
enc = new SrsTsStreamEncoder();
} else {
ret = ERROR_HTTP_LIVE_STREAM_EXT;
srs_error("http: unsupported pattern %s", entry->pattern.c_str());
return ret;
}
SrsAutoFree(ISrsStreamEncoder, enc);
// create consumer of souce, ignore gop cache, use the audio gop cache.
SrsConsumer* consumer = NULL;
if ((ret = source->create_consumer(NULL, consumer, true, true, !enc->has_cache())) != ERROR_SUCCESS) {
srs_error("http: create consumer failed. ret=%d", ret);
return ret;
}
SrsAutoFree(SrsConsumer, consumer);
srs_verbose("http: consumer created success.");
SrsPithyPrint* pprint = SrsPithyPrint::create_http_stream();
SrsAutoFree(SrsPithyPrint, pprint);
SrsMessageArray msgs(SRS_PERF_MW_MSGS);
// the memory writer.
SrsStreamWriter writer(w);
if ((ret = enc->initialize(&writer, cache)) != ERROR_SUCCESS) {
srs_error("http: initialize stream encoder failed. ret=%d", ret);
return ret;
}
// if gop cache enabled for encoder, dump to consumer.
if (enc->has_cache()) {
if ((ret = enc->dump_cache(consumer, source->jitter())) != ERROR_SUCCESS) {
srs_error("http: dump cache to consumer failed. ret=%d", ret);
return ret;
}
}
#ifdef SRS_PERF_FAST_FLV_ENCODER
SrsFastFlvStreamEncoder* ffe = dynamic_cast<SrsFastFlvStreamEncoder*>(enc);
#endif
// Use receive thread to accept the close event to avoid FD leak.
// @see https://github.com/ossrs/srs/issues/636#issuecomment-298208427
SrsHttpMessage* hr = dynamic_cast<SrsHttpMessage*>(r);
SrsResponseOnlyHttpConn* hc = dynamic_cast<SrsResponseOnlyHttpConn*>(hr->connection());
int mw_sleep = _srs_config->get_mw_sleep_ms(req->vhost);
SrsHttpRecvThread* trd = new SrsHttpRecvThread(hc);
SrsAutoFree(SrsHttpRecvThread, trd);
if ((ret = trd->start()) != ERROR_SUCCESS) {
srs_error("http: start notify thread failed, ret=%d", ret);
return ret;
}
// TODO: free and erase the disabled entry after all related connections is closed.
while (entry->enabled) {
pprint->elapse();
// Whether client closed the FD.
if ((ret = trd->error_code()) != ERROR_SUCCESS) {
return ret;
}
// get messages from consumer.
// each msg in msgs.msgs must be free, for the SrsMessageArray never free them.
int count = 0;
if ((ret = consumer->dump_packets(&msgs, count)) != ERROR_SUCCESS) {
srs_error("http: get messages from consumer failed. ret=%d", ret);
return ret;
}
if (count <= 0) {
srs_info("http: sleep %dms for no msg", SRS_CONSTS_RTMP_PULSE_TIMEOUT_US);
// directly use sleep, donot use consumer wait.
st_usleep(mw_sleep * 1000);
// ignore when nothing got.
continue;
}
if (pprint->can_print()) {
srs_trace("-> "SRS_CONSTS_LOG_HTTP_STREAM" http: got %d msgs, age=%d, min=%d, mw=%d",
count, pprint->age(), SRS_PERF_MW_MIN_MSGS, mw_sleep);
}
// sendout all messages.
#ifdef SRS_PERF_FAST_FLV_ENCODER
if (ffe) {
ret = ffe->write_tags(msgs.msgs, count);
} else {
ret = streaming_send_messages(enc, msgs.msgs, count);
}
#else
ret = streaming_send_messages(enc, msgs.msgs, count);
#endif
// free the messages.
for (int i = 0; i < count; i++) {
SrsSharedPtrMessage* msg = msgs.msgs[i];
srs_freep(msg);
}
// check send error code.
if (ret != ERROR_SUCCESS) {
if (!srs_is_client_gracefully_close(ret)) {
srs_error("http: send messages to client failed. ret=%d", ret);
}
return ret;
}
}
return ret;
}