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srs/trunk/src/app/srs_app_srt_conn.cpp

726 lines
20 KiB
C++

//
// Copyright (c) 2013-2022 The SRS Authors
//
// SPDX-License-Identifier: MIT or MulanPSL-2.0
//
#include <srs_app_srt_conn.hpp>
using namespace std;
#include <srs_kernel_buffer.hpp>
#include <srs_kernel_flv.hpp>
#include <srs_kernel_stream.hpp>
#include <srs_core_autofree.hpp>
#include <srs_protocol_rtmp_stack.hpp>
#include <srs_protocol_srt.hpp>
#include <srs_app_config.hpp>
#include <srs_app_http_hooks.hpp>
#include <srs_app_pithy_print.hpp>
#include <srs_app_srt_server.hpp>
#include <srs_app_srt_source.hpp>
#include <srs_app_statistic.hpp>
#include <srs_protocol_rtmp_stack.hpp>
#include <srs_kernel_utility.hpp>
SrsSrtConnection::SrsSrtConnection(srs_srt_t srt_fd)
{
srt_fd_ = srt_fd;
srt_skt_ = new SrsSrtSocket(_srt_eventloop->poller(), srt_fd_);
}
SrsSrtConnection::~SrsSrtConnection()
{
srs_freep(srt_skt_);
}
srs_error_t SrsSrtConnection::initialize()
{
srs_error_t err = srs_success;
return err;
}
void SrsSrtConnection::set_recv_timeout(srs_utime_t tm)
{
srt_skt_->set_recv_timeout(tm);
}
srs_utime_t SrsSrtConnection::get_recv_timeout()
{
return srt_skt_->get_recv_timeout();
}
srs_error_t SrsSrtConnection::read_fully(void* buf, size_t size, ssize_t* nread)
{
return srs_error_new(ERROR_SRT_CONN, "unsupport method");
}
int64_t SrsSrtConnection::get_recv_bytes()
{
return srt_skt_->get_recv_bytes();
}
int64_t SrsSrtConnection::get_send_bytes()
{
return srt_skt_->get_send_bytes();
}
srs_error_t SrsSrtConnection::read(void* buf, size_t size, ssize_t* nread)
{
return srt_skt_->recvmsg(buf, size, nread);
}
void SrsSrtConnection::set_send_timeout(srs_utime_t tm)
{
srt_skt_->set_send_timeout(tm);
}
srs_utime_t SrsSrtConnection::get_send_timeout()
{
return srt_skt_->get_send_timeout();
}
srs_error_t SrsSrtConnection::write(void* buf, size_t size, ssize_t* nwrite)
{
return srt_skt_->sendmsg(buf, size, nwrite);
}
srs_error_t SrsSrtConnection::writev(const iovec *iov, int iov_size, ssize_t* nwrite)
{
return srs_error_new(ERROR_SRT_CONN, "unsupport method");
}
SrsSrtRecvThread::SrsSrtRecvThread(SrsSrtConnection* srt_conn)
{
srt_conn_ = srt_conn;
trd_ = new SrsSTCoroutine("srt-recv", this, _srs_context->get_id());
recv_err_ = srs_success;
}
SrsSrtRecvThread::~SrsSrtRecvThread()
{
srs_freep(trd_);
srs_error_reset(recv_err_);
}
srs_error_t SrsSrtRecvThread::cycle()
{
srs_error_t err = srs_success;
if ((err = do_cycle()) != srs_success) {
recv_err_ = srs_error_copy(err);
}
return err;
}
srs_error_t SrsSrtRecvThread::do_cycle()
{
srs_error_t err = srs_success;
while (true) {
if ((err = trd_->pull()) != srs_success) {
return srs_error_wrap(err, "srt: thread quit");
}
char buf[1316];
ssize_t nb = 0;
if ((err = srt_conn_->read(buf, sizeof(buf), &nb)) != srs_success) {
if (srs_error_code(err) != ERROR_SRT_TIMEOUT) {
return srs_error_wrap(err, "srt read");
}
}
}
return err;
}
srs_error_t SrsSrtRecvThread::start()
{
srs_error_t err = srs_success;
if ((err = trd_->start()) != srs_success) {
return srs_error_wrap(err, "start srt recv thread");
}
return err;
}
srs_error_t SrsSrtRecvThread::get_recv_err()
{
return srs_error_copy(recv_err_);
}
SrsMpegtsSrtConn::SrsMpegtsSrtConn(SrsSrtServer* srt_server, srs_srt_t srt_fd, std::string ip, int port)
{
// Create a identify for this client.
_srs_context->set_id(_srs_context->generate_id());
srt_server_ = srt_server;
srt_fd_ = srt_fd;
srt_conn_ = new SrsSrtConnection(srt_fd_);
ip_ = ip;
port_ = port;
kbps_ = new SrsNetworkKbps();
kbps_->set_io(srt_conn_, srt_conn_);
delta_ = new SrsNetworkDelta();
delta_->set_io(srt_conn_, srt_conn_);
trd_ = new SrsSTCoroutine("ts-srt", this, _srs_context->get_id());
srt_source_ = NULL;
req_ = new SrsRequest();
req_->ip = ip;
}
SrsMpegtsSrtConn::~SrsMpegtsSrtConn()
{
srs_freep(trd_);
srs_freep(kbps_);
srs_freep(delta_);
srs_freep(srt_conn_);
srs_freep(req_);
}
std::string SrsMpegtsSrtConn::desc()
{
return "srt-ts-conn";
}
ISrsKbpsDelta* SrsMpegtsSrtConn::delta()
{
return delta_;
}
void SrsMpegtsSrtConn::expire()
{
trd_->interrupt();
}
srs_error_t SrsMpegtsSrtConn::start()
{
srs_error_t err = srs_success;
if ((err = trd_->start()) != srs_success) {
return srs_error_wrap(err, "coroutine");
}
return err;
}
std::string SrsMpegtsSrtConn::remote_ip()
{
return ip_;
}
const SrsContextId& SrsMpegtsSrtConn::get_id()
{
return trd_->cid();
}
srs_error_t SrsMpegtsSrtConn::cycle()
{
srs_error_t err = do_cycle();
// Update statistic when done.
SrsStatistic* stat = SrsStatistic::instance();
stat->kbps_add_delta(get_id().c_str(), delta_);
stat->on_disconnect(get_id().c_str());
// Notify manager to remove it.
// Note that we create this object, so we use manager to remove it.
srt_server_->remove(this);
// success.
if (err == srs_success) {
srs_trace("srt client finished.");
return err;
}
srs_error("srt serve error %s", srs_error_desc(err).c_str());
srs_freep(err);
return srs_success;
}
srs_error_t SrsMpegtsSrtConn::do_cycle()
{
srs_error_t err = srs_success;
srs_trace("SRT client ip=%s:%d, fd=%d", ip_.c_str(), port_, srt_fd_);
string streamid = "";
if ((err = srs_srt_get_streamid(srt_fd_, streamid)) != srs_success) {
return srs_error_wrap(err, "get srt streamid");
}
// Must have streamid, because srt ts packet will convert to rtmp or rtc.
if (streamid.empty()) {
return srs_error_new(ERROR_SRT_CONN, "empty srt streamid");
}
// Detect streamid of srt to request.
SrtMode mode = SrtModePull;
if (!srs_srt_streamid_to_request(streamid, mode, req_)) {
return srs_error_new(ERROR_SRT_CONN, "invalid srt streamid=%s", streamid.c_str());
}
// discovery vhost, resolve the vhost from config
SrsConfDirective* parsed_vhost = _srs_config->get_vhost(req_->vhost);
if (parsed_vhost) {
req_->vhost = parsed_vhost->arg0();
}
if (! _srs_config->get_srt_enabled(req_->vhost)) {
return srs_error_new(ERROR_SRT_CONN, "srt disabled, vhost=%s", req_->vhost.c_str());
}
srs_trace("@srt, streamid=%s, stream_url=%s, vhost=%s, app=%s, stream=%s, param=%s",
streamid.c_str(), req_->get_stream_url().c_str(), req_->vhost.c_str(), req_->app.c_str(), req_->stream.c_str(), req_->param.c_str());
if ((err = _srs_srt_sources->fetch_or_create(req_, &srt_source_)) != srs_success) {
return srs_error_wrap(err, "fetch srt source");
}
if ((err = http_hooks_on_connect()) != srs_success) {
return srs_error_wrap(err, "on connect");
}
if (mode == SrtModePush) {
err = publishing();
} else if (mode == SrtModePull) {
err = playing();
}
http_hooks_on_close();
return err;
}
srs_error_t SrsMpegtsSrtConn::publishing()
{
srs_error_t err = srs_success;
// We must do stat the client before hooks, because hooks depends on it.
SrsStatistic* stat = SrsStatistic::instance();
if ((err = stat->on_client(_srs_context->get_id().c_str(), req_, this, SrsSrtConnPublish)) != srs_success) {
return srs_error_wrap(err, "srt: stat client");
}
// We must do hook after stat, because depends on it.
if ((err = http_hooks_on_publish()) != srs_success) {
return srs_error_wrap(err, "srt: callback on publish");
}
if ((err = acquire_publish()) == srs_success) {
err = do_publishing();
release_publish();
}
http_hooks_on_unpublish();
return err;
}
srs_error_t SrsMpegtsSrtConn::playing()
{
srs_error_t err = srs_success;
// We must do stat the client before hooks, because hooks depends on it.
SrsStatistic* stat = SrsStatistic::instance();
if ((err = stat->on_client(_srs_context->get_id().c_str(), req_, this, SrsSrtConnPlay)) != srs_success) {
return srs_error_wrap(err, "rtmp: stat client");
}
// We must do hook after stat, because depends on it.
if ((err = http_hooks_on_play()) != srs_success) {
return srs_error_wrap(err, "rtmp: callback on play");
}
err = do_playing();
http_hooks_on_stop();
return err;
}
// TODO: FIXME: It's not atomic and has risk between multiple source checking.
srs_error_t SrsMpegtsSrtConn::acquire_publish()
{
srs_error_t err = srs_success;
// Check srt stream is busy.
if (! srt_source_->can_publish()) {
return srs_error_new(ERROR_SRT_SOURCE_BUSY, "srt stream %s busy", req_->get_stream_url().c_str());
}
if (_srs_config->get_srt_to_rtmp(req_->vhost)) {
// Check rtmp stream is busy.
SrsLiveSource *live_source = _srs_sources->fetch(req_);
if (live_source && !live_source->can_publish(false)) {
return srs_error_new(ERROR_SYSTEM_STREAM_BUSY, "live_source stream %s busy", req_->get_stream_url().c_str());
}
if ((err = _srs_sources->fetch_or_create(req_, _srs_hybrid->srs()->instance(), &live_source)) != srs_success) {
return srs_error_wrap(err, "create source");
}
SrsRtmpFromSrtBridge *bridger = new SrsRtmpFromSrtBridge(live_source);
if ((err = bridger->initialize(req_)) != srs_success) {
srs_freep(bridger);
return srs_error_wrap(err, "create bridger");
}
srt_source_->set_bridge(bridger);
}
if ((err = srt_source_->on_publish()) != srs_success) {
return srs_error_wrap(err, "srt source publish");
}
return err;
}
void SrsMpegtsSrtConn::release_publish()
{
srt_source_->on_unpublish();
}
srs_error_t SrsMpegtsSrtConn::do_publishing()
{
srs_error_t err = srs_success;
SrsPithyPrint* pprint = SrsPithyPrint::create_srt_publish();
SrsAutoFree(SrsPithyPrint, pprint);
int nb_packets = 0;
// Max udp packet size equal to 1500.
char buf[1500];
while (true) {
if ((err = trd_->pull()) != srs_success) {
return srs_error_wrap(err, "srt: thread quit");
}
pprint->elapse();
if (pprint->can_print()) {
SrsSrtStat s;
if ((err = s.fetch(srt_fd_, true)) != srs_success) {
srs_freep(err);
} else {
srs_trace("<- " SRS_CONSTS_LOG_SRT_PUBLISH " Transport Stats # pktRecv=%" PRId64 ", pktRcvLoss=%d, pktRcvRetrans=%d, pktRcvDrop=%d",
s.pktRecv(), s.pktRcvLoss(), s.pktRcvRetrans(), s.pktRcvDrop());
}
kbps_->sample();
srs_trace("<- " SRS_CONSTS_LOG_SRT_PUBLISH " time=%" PRId64 ", packets=%d, okbps=%d,%d,%d, ikbps=%d,%d,%d",
srsu2ms(pprint->age()), nb_packets, kbps_->get_send_kbps(), kbps_->get_send_kbps_30s(), kbps_->get_send_kbps_5m(),
kbps_->get_recv_kbps(), kbps_->get_recv_kbps_30s(), kbps_->get_recv_kbps_5m());
nb_packets = 0;
}
ssize_t nb = 0;
if ((err = srt_conn_->read(buf, sizeof(buf), &nb)) != srs_success) {
return srs_error_wrap(err, "srt: recvmsg");
}
++nb_packets;
if ((err = on_srt_packet(buf, nb)) != srs_success) {
return srs_error_wrap(err, "srt: process packet");
}
}
return err;
}
srs_error_t SrsMpegtsSrtConn::do_playing()
{
srs_error_t err = srs_success;
SrsSrtConsumer* consumer = NULL;
SrsAutoFree(SrsSrtConsumer, consumer);
if ((err = srt_source_->create_consumer(consumer)) != srs_success) {
return srs_error_wrap(err, "create consumer, ts source=%s", req_->get_stream_url().c_str());
}
srs_assert(consumer);
// TODO: FIXME: Dumps the SPS/PPS from gop cache, without other frames.
if ((err = srt_source_->consumer_dumps(consumer)) != srs_success) {
return srs_error_wrap(err, "dumps consumer, url=%s", req_->get_stream_url().c_str());
}
SrsPithyPrint* pprint = SrsPithyPrint::create_srt_play();
SrsAutoFree(SrsPithyPrint, pprint);
SrsSrtRecvThread srt_recv_trd(srt_conn_);
if ((err = srt_recv_trd.start()) != srs_success) {
return srs_error_wrap(err, "start srt recv trd");
}
int nb_packets = 0;
while (true) {
if ((err = trd_->pull()) != srs_success) {
return srs_error_wrap(err, "srt play thread");
}
if ((err = srt_recv_trd.get_recv_err()) != srs_success) {
return srs_error_wrap(err, "srt play recv thread");
}
// Wait for amount of packets.
SrsSrtPacket* pkt = NULL;
SrsAutoFree(SrsSrtPacket, pkt);
consumer->dump_packet(&pkt);
if (!pkt) {
// TODO: FIXME: We should check the quit event.
consumer->wait(1, 1000 * SRS_UTIME_MILLISECONDS);
continue;
}
++nb_packets;
// reportable
pprint->elapse();
if (pprint->can_print()) {
SrsSrtStat s;
if ((err = s.fetch(srt_fd_, true)) != srs_success) {
srs_freep(err);
} else {
srs_trace("-> " SRS_CONSTS_LOG_SRT_PLAY " Transport Stats # pktSent=%" PRId64 ", pktSndLoss=%d, pktRetrans=%d, pktSndDrop=%d",
s.pktSent(), s.pktSndLoss(), s.pktRetrans(), s.pktSndDrop());
}
kbps_->sample();
srs_trace("-> " SRS_CONSTS_LOG_SRT_PLAY " time=%" PRId64 ", packets=%d, okbps=%d,%d,%d, ikbps=%d,%d,%d",
srsu2ms(pprint->age()), nb_packets, kbps_->get_send_kbps(), kbps_->get_send_kbps_30s(), kbps_->get_send_kbps_5m(),
kbps_->get_recv_kbps(), kbps_->get_recv_kbps_30s(), kbps_->get_recv_kbps_5m());
nb_packets = 0;
}
ssize_t nb_write = 0;
if ((err = srt_conn_->write(pkt->data(), pkt->size(), &nb_write)) != srs_success) {
return srs_error_wrap(err, "srt send, size=%d", pkt->size());
}
// Yield to another coroutines.
// @see https://github.com/ossrs/srs/issues/2194#issuecomment-777542162
// TODO: FIXME: Please check whether SRT sendmsg causing clock deviation, see srs_thread_yield of SrsUdpMuxSocket::sendto
}
return err;
}
srs_error_t SrsMpegtsSrtConn::on_srt_packet(char* buf, int nb_buf)
{
srs_error_t err = srs_success;
// Ignore if invalid length.
if (nb_buf <= 0) {
return err;
}
// Check srt payload, mpegts must be N times of SRS_TS_PACKET_SIZE
if ((nb_buf % SRS_TS_PACKET_SIZE) != 0) {
return srs_error_new(ERROR_SRT_CONN, "invalid ts packet len=%d", nb_buf);
}
// Check srt payload, the first byte must be 0x47
if (buf[0] != 0x47) {
return srs_error_new(ERROR_SRT_CONN, "invalid ts packet first=%#x", (uint8_t)buf[0]);
}
SrsSrtPacket* packet = new SrsSrtPacket();
SrsAutoFree(SrsSrtPacket, packet);
packet->wrap(buf, nb_buf);
if ((err = srt_source_->on_packet(packet)) != srs_success) {
return srs_error_wrap(err, "on srt packet");
}
return err;
}
srs_error_t SrsMpegtsSrtConn::http_hooks_on_connect()
{
srs_error_t err = srs_success;
if (!_srs_config->get_vhost_http_hooks_enabled(req_->vhost)) {
return err;
}
// 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_connect(req_->vhost);
if (!conf) {
return err;
}
hooks = conf->args;
}
for (int i = 0; i < (int)hooks.size(); i++) {
std::string url = hooks.at(i);
if ((err = SrsHttpHooks::on_connect(url, req_)) != srs_success) {
return srs_error_wrap(err, "srt on_connect %s", url.c_str());
}
}
return err;
}
void SrsMpegtsSrtConn::http_hooks_on_close()
{
if (!_srs_config->get_vhost_http_hooks_enabled(req_->vhost)) {
return;
}
// 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_close(req_->vhost);
if (!conf) {
return;
}
hooks = conf->args;
}
for (int i = 0; i < (int)hooks.size(); i++) {
std::string url = hooks.at(i);
SrsHttpHooks::on_close(url, req_, srt_conn_->get_send_bytes(), srt_conn_->get_recv_bytes());
}
}
srs_error_t SrsMpegtsSrtConn::http_hooks_on_publish()
{
srs_error_t err = srs_success;
if (!_srs_config->get_vhost_http_hooks_enabled(req_->vhost)) {
return err;
}
// 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_publish(req_->vhost);
if (!conf) {
return err;
}
hooks = conf->args;
}
for (int i = 0; i < (int)hooks.size(); i++) {
std::string url = hooks.at(i);
if ((err = SrsHttpHooks::on_publish(url, req_)) != srs_success) {
return srs_error_wrap(err, "srt on_publish %s", url.c_str());
}
}
return err;
}
void SrsMpegtsSrtConn::http_hooks_on_unpublish()
{
if (!_srs_config->get_vhost_http_hooks_enabled(req_->vhost)) {
return;
}
// 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_unpublish(req_->vhost);
if (!conf) {
return;
}
hooks = conf->args;
}
for (int i = 0; i < (int)hooks.size(); i++) {
std::string url = hooks.at(i);
SrsHttpHooks::on_unpublish(url, req_);
}
}
srs_error_t SrsMpegtsSrtConn::http_hooks_on_play()
{
srs_error_t err = srs_success;
if (!_srs_config->get_vhost_http_hooks_enabled(req_->vhost)) {
return err;
}
// 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(req_->vhost);
if (!conf) {
return err;
}
hooks = conf->args;
}
for (int i = 0; i < (int)hooks.size(); i++) {
std::string url = hooks.at(i);
if ((err = SrsHttpHooks::on_play(url, req_)) != srs_success) {
return srs_error_wrap(err, "srt on_play %s", url.c_str());
}
}
return err;
}
void SrsMpegtsSrtConn::http_hooks_on_stop()
{
if (!_srs_config->get_vhost_http_hooks_enabled(req_->vhost)) {
return;
}
// 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_stop(req_->vhost);
if (!conf) {
return;
}
hooks = conf->args;
}
for (int i = 0; i < (int)hooks.size(); i++) {
std::string url = hooks.at(i);
SrsHttpHooks::on_stop(url, req_);
}
return;
}