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格式化srt相关代码

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ziyue 2022-06-07 09:52:20 +08:00
parent 83d75c9a72
commit e415230e47
20 changed files with 821 additions and 789 deletions
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4
conf/config.ini
View File

@ -291,8 +291,8 @@ timeoutSec=5
#该端口是多线程的，同时支持客户端网络切换导致的连接迁移
port=9000
#srt 协议中延迟缓存的估算参数，在握手阶段估算rtt ,然后lantencyMul*rtt 为最大缓存时长，此参数越大，表示等待重传的时长就越大
lantencyMul=4
#srt 协议中延迟缓存的估算参数，在握手阶段估算rtt ,然后latencyMul*rtt 为最大缓存时长，此参数越大，表示等待重传的时长就越大
latencyMul=4
[rtsp]

44
srt/Ack.cpp
View File

@ -2,8 +2,9 @@
#include "Common.hpp"
namespace SRT {
bool ACKPacket::loadFromData(uint8_t *buf, size_t len) {
if(len < ACK_CIF_SIZE + ControlPacket::HEADER_SIZE){
bool ACKPacket::loadFromData(uint8_t *buf, size_t len) {
if (len < ACK_CIF_SIZE + ControlPacket::HEADER_SIZE) {
return false;
}
@ -11,7 +12,7 @@ bool ACKPacket::loadFromData(uint8_t *buf, size_t len) {
_data->assign((char *)(buf), len);
ControlPacket::loadHeader();
ack_number = loadUint32(type_specific_info);
uint8_t* ptr = (uint8_t*)_data->data()+ControlPacket::HEADER_SIZE;
uint8_t *ptr = (uint8_t *)_data->data() + ControlPacket::HEADER_SIZE;
last_ack_pkt_seq_number = loadUint32(ptr);
ptr += 4;
@ -32,52 +33,53 @@ bool ACKPacket::loadFromData(uint8_t *buf, size_t len) {
ptr += 4;
recv_rate = loadUint32(ptr);
ptr += 4;
ptr += 4;
return true;
}
bool ACKPacket::storeToData() {
bool ACKPacket::storeToData() {
_data = BufferRaw::create();
_data->setCapacity(HEADER_SIZE + ACK_CIF_SIZE);
_data->setSize(HEADER_SIZE + ACK_CIF_SIZE);
control_type = ControlPacket::ACK;
sub_type = 0;
storeUint32(type_specific_info,ack_number);
storeUint32(type_specific_info, ack_number);
storeToHeader();
uint8_t* ptr = (uint8_t*)_data->data()+ControlPacket::HEADER_SIZE;
storeUint32(ptr,last_ack_pkt_seq_number);
uint8_t *ptr = (uint8_t *)_data->data() + ControlPacket::HEADER_SIZE;
storeUint32(ptr, last_ack_pkt_seq_number);
ptr += 4;
storeUint32(ptr,rtt);
storeUint32(ptr, rtt);
ptr += 4;
storeUint32(ptr,rtt_variance);
storeUint32(ptr, rtt_variance);
ptr += 4;
storeUint32(ptr,pkt_recv_rate);
storeUint32(ptr, pkt_recv_rate);
ptr += 4;
storeUint32(ptr,available_buf_size);
storeUint32(ptr, available_buf_size);
ptr += 4;
storeUint32(ptr,estimated_link_capacity);
storeUint32(ptr, estimated_link_capacity);
ptr += 4;
storeUint32(ptr,recv_rate);
storeUint32(ptr, recv_rate);
ptr += 4;
return true;
}
std::string ACKPacket::dump(){
std::string ACKPacket::dump() {
_StrPrinter printer;
printer << "last_ack_pkt_seq_number="<<last_ack_pkt_seq_number<<\
" rtt="<<rtt<<" rtt_variance="<<rtt_variance<<\
" pkt_recv_rate="<<pkt_recv_rate<<" available_buf_size="<<available_buf_size<<\
" estimated_link_capacity="<<estimated_link_capacity<<" recv_rate="<<recv_rate;
printer << "last_ack_pkt_seq_number=" << last_ack_pkt_seq_number << " rtt=" << rtt
<< " rtt_variance=" << rtt_variance << " pkt_recv_rate=" << pkt_recv_rate
<< " available_buf_size=" << available_buf_size << " estimated_link_capacity=" << estimated_link_capacity
<< " recv_rate=" << recv_rate;
return std::move(printer);
}
} // namespace
} // namespace SRT

26
srt/Ack.hpp
View File

@ -2,8 +2,7 @@
#define ZLMEDIAKIT_SRT_ACK_H
#include "Packet.hpp"
namespace SRT{
namespace SRT {
/*
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
@ -33,16 +32,13 @@ namespace SRT{
Figure 13: ACK control packet
https://haivision.github.io/srt-rfc/draft-sharabayko-srt.html#name-ack-acknowledgment
*/
class ACKPacket : public ControlPacket
{
class ACKPacket : public ControlPacket {
public:
using Ptr = std::shared_ptr<ACKPacket>;
ACKPacket() = default;
~ACKPacket() = default;
enum{
ACK_CIF_SIZE = 7*4
};
enum { ACK_CIF_SIZE = 7 * 4 };
std::string dump();
///////ControlPacket override///////
bool loadFromData(uint8_t *buf, size_t len) override;
@ -59,15 +55,14 @@ public:
uint32_t recv_rate;
};
class ACKACKPacket : public ControlPacket{
class ACKACKPacket : public ControlPacket {
public:
using Ptr = std::shared_ptr<ACKACKPacket>;
ACKACKPacket() = default;
~ACKACKPacket() = default;
///////ControlPacket override///////
bool loadFromData(uint8_t *buf, size_t len) override{
if(len < ControlPacket::HEADER_SIZE){
bool loadFromData(uint8_t *buf, size_t len) override {
if (len < ControlPacket::HEADER_SIZE) {
return false;
}
_data = BufferRaw::create();
@ -76,21 +71,20 @@ public:
ack_number = loadUint32(type_specific_info);
return true;
}
bool storeToData() override{
bool storeToData() override {
_data = BufferRaw::create();
_data->setCapacity(HEADER_SIZE);
_data->setSize(HEADER_SIZE );
_data->setSize(HEADER_SIZE);
control_type = ControlPacket::ACKACK;
sub_type = 0;
storeUint32(type_specific_info,ack_number);
storeUint32(type_specific_info, ack_number);
storeToHeader();
return true;
}
uint32_t ack_number;
};
} //namespace SRT
} // namespace SRT
#endif // ZLMEDIAKIT_SRT_ACK_H

50
srt/Common.hpp
View File

@ -2,83 +2,73 @@
#define ZLMEDIAKIT_SRT_COMMON_H
#include <chrono>
namespace SRT
{
namespace SRT {
using SteadyClock = std::chrono::steady_clock;
using TimePoint = std::chrono::time_point<SteadyClock>;
using Microseconds = std::chrono::microseconds;
using Milliseconds = std::chrono::milliseconds;
inline int64_t DurationCountMicroseconds( SteadyClock::duration dur){
static inline int64_t DurationCountMicroseconds(SteadyClock::duration dur) {
return std::chrono::duration_cast<std::chrono::microseconds>(dur).count();
}
inline uint32_t loadUint32(uint8_t *ptr) {
static inline uint32_t loadUint32(uint8_t *ptr) {
return ptr[0] << 24 | ptr[1] << 16 | ptr[2] << 8 | ptr[3];
}
inline uint16_t loadUint16(uint8_t *ptr) {
static inline uint16_t loadUint16(uint8_t *ptr) {
return ptr[0] << 8 | ptr[1];
}
inline void storeUint32(uint8_t *buf, uint32_t val) {
static inline void storeUint32(uint8_t *buf, uint32_t val) {
buf[0] = val >> 24;
buf[1] = (val >> 16) & 0xff;
buf[2] = (val >> 8) & 0xff;
buf[3] = val & 0xff;
}
inline void storeUint16(uint8_t *buf, uint16_t val) {
static inline void storeUint16(uint8_t *buf, uint16_t val) {
buf[0] = (val >> 8) & 0xff;
buf[1] = val & 0xff;
}
inline void storeUint32LE(uint8_t *buf, uint32_t val) {
static inline void storeUint32LE(uint8_t *buf, uint32_t val) {
buf[0] = val & 0xff;
buf[1] = (val >> 8) & 0xff;
buf[2] = (val >> 16) & 0xff;
buf[3] = (val >>24) & 0xff;
buf[3] = (val >> 24) & 0xff;
}
inline void storeUint16LE(uint8_t *buf, uint16_t val) {
static inline void storeUint16LE(uint8_t *buf, uint16_t val) {
buf[0] = val & 0xff;
buf[1] = (val>>8) & 0xff;
buf[1] = (val >> 8) & 0xff;
}
inline uint32_t srtVersion(int major, int minor, int patch)
{
return patch + minor*0x100 + major*0x10000;
static inline uint32_t srtVersion(int major, int minor, int patch) {
return patch + minor * 0x100 + major * 0x10000;
}
class UTicker {
public:
UTicker() {
_created = _begin = SteadyClock::now();
}
~UTicker() {
}
UTicker() { _created = _begin = SteadyClock::now(); }
~UTicker() = default;
/**
* 获取创建时间，单位微妙
*/
int64_t elapsedTime(TimePoint now) const {
return DurationCountMicroseconds(now - _begin);
}
int64_t elapsedTime(TimePoint now) const { return DurationCountMicroseconds(now - _begin); }
/**
* 获取上次resetTime后至今的时间，单位毫秒
*/
int64_t createdTime(TimePoint now) const {
return DurationCountMicroseconds(now - _created);
}
int64_t createdTime(TimePoint now) const { return DurationCountMicroseconds(now - _created); }
/**
* 重置计时器
*/
void resetTime(TimePoint now) {
_begin = now;
}
void resetTime(TimePoint now) { _begin = now; }
private:
TimePoint _begin;
@ -87,4 +77,4 @@ private:
} // namespace SRT
#endif //ZLMEDIAKIT_SRT_COMMON_H
#endif // ZLMEDIAKIT_SRT_COMMON_H

125
srt/HSExt.cpp
View File

@ -1,20 +1,21 @@
#include "HSExt.hpp"
namespace SRT {
bool HSExtMessage::loadFromData(uint8_t *buf, size_t len) {
if(buf == NULL || len != HSEXT_MSG_SIZE){
if (buf == NULL || len != HSEXT_MSG_SIZE) {
return false;
}
_data = BufferRaw::create();
_data->assign((char*)buf,len);
_data->assign((char *)buf, len);
extension_length = 3;
HSExt::loadHeader();
assert(extension_type == SRT_CMD_HSREQ || extension_type == SRT_CMD_HSRSP);
uint8_t* ptr = (uint8_t*)_data->data()+4;
srt_version = loadUint32(ptr);
uint8_t *ptr = (uint8_t *)_data->data() + 4;
srt_version = loadUint32(ptr);
ptr += 4;
srt_flag = loadUint32(ptr);
@ -27,105 +28,107 @@ bool HSExtMessage::loadFromData(uint8_t *buf, size_t len) {
ptr += 2;
return true;
}
}
std::string HSExtMessage::dump(){
_StrPrinter printer;
printer << "srt version : "<<std::hex<<srt_version<<" srt flag : "<<std::hex<<srt_flag<<\
" recv_tsbpd_delay="<<recv_tsbpd_delay<<" send_tsbpd_delay = "<<send_tsbpd_delay;
return std::move(printer);
}
bool HSExtMessage::storeToData() {
std::string HSExtMessage::dump() {
_StrPrinter printer;
printer << "srt version : " << std::hex << srt_version << " srt flag : " << std::hex << srt_flag
<< " recv_tsbpd_delay=" << recv_tsbpd_delay << " send_tsbpd_delay = " << send_tsbpd_delay;
return std::move(printer);
}
bool HSExtMessage::storeToData() {
_data = BufferRaw::create();
_data->setCapacity(HSEXT_MSG_SIZE);
_data->setSize(HSEXT_MSG_SIZE);
extension_length = 3;
HSExt::storeHeader();
uint8_t* ptr = (uint8_t*)_data->data()+4;
uint8_t *ptr = (uint8_t *)_data->data() + 4;
storeUint32(ptr,srt_version);
ptr += 4;
storeUint32(ptr, srt_version);
ptr += 4;
storeUint32(ptr,srt_flag);
ptr += 4;
storeUint32(ptr, srt_flag);
ptr += 4;
storeUint16(ptr,recv_tsbpd_delay);
ptr += 2;
storeUint16(ptr, recv_tsbpd_delay);
ptr += 2;
storeUint16(ptr,send_tsbpd_delay);
ptr += 2;
return true;
storeUint16(ptr, send_tsbpd_delay);
ptr += 2;
return true;
}
bool HSExtStreamID::loadFromData(uint8_t *buf, size_t len) {
if(buf == NULL || len < 4){
bool HSExtStreamID::loadFromData(uint8_t *buf, size_t len) {
if (buf == NULL || len < 4) {
return false;
}
_data = BufferRaw::create();
_data->assign((char*)buf,len);
_data->assign((char *)buf, len);
HSExt::loadHeader();
size_t content_size = extension_length*4;
if(len < content_size+4){
size_t content_size = extension_length * 4;
if (len < content_size + 4) {
return false;
}
streamid.clear();
char* ptr = _data->data()+4;
char *ptr = _data->data() + 4;
for(size_t i = 0; i<extension_length; ++i){
streamid.push_back(*(ptr+3));
streamid.push_back(*(ptr+2));
streamid.push_back(*(ptr+1));
for (size_t i = 0; i < extension_length; ++i) {
streamid.push_back(*(ptr + 3));
streamid.push_back(*(ptr + 2));
streamid.push_back(*(ptr + 1));
streamid.push_back(*(ptr));
ptr+=4;
ptr += 4;
}
char zero = 0x00;
if(streamid.back() == zero){
streamid.erase(streamid.find_first_of(zero),streamid.size());
if (streamid.back() == zero) {
streamid.erase(streamid.find_first_of(zero), streamid.size());
}
return true;
}
}
bool HSExtStreamID::storeToData() {
size_t content_size = ((streamid.length()+4)+3)/4*4;
bool HSExtStreamID::storeToData() {
size_t content_size = ((streamid.length() + 4) + 3) / 4 * 4;
_data = BufferRaw::create();
_data->setCapacity(content_size);
_data->setSize(content_size);
extension_length = (content_size-4)/4;
extension_length = (content_size - 4) / 4;
extension_type = SRT_CMD_SID;
HSExt::storeHeader();
auto ptr = _data->data()+4;
memset(ptr,0,extension_length*4);
const char* src = streamid.c_str();
for(size_t i = 0; i< streamid.length()/4;++i){
*ptr = *(src+3+i*4);
ptr++;
auto ptr = _data->data() + 4;
memset(ptr, 0, extension_length * 4);
const char *src = streamid.c_str();
for (size_t i = 0; i < streamid.length() / 4; ++i) {
*ptr = *(src + 3 + i * 4);
ptr++;
*ptr = *(src+2+i*4);
ptr++;
*ptr = *(src + 2 + i * 4);
ptr++;
*ptr = *(src+1+i*4);
ptr++;
*ptr = *(src + 1 + i * 4);
ptr++;
*ptr = *(src+0+i*4);
ptr++;
*ptr = *(src + 0 + i * 4);
ptr++;
}
ptr += 3;
size_t offset = streamid.length()/4*4;
for(size_t i = 0; i<streamid.length()%4;++i){
*ptr = *(src+offset+i);
ptr -= 1;
size_t offset = streamid.length() / 4 * 4;
for (size_t i = 0; i < streamid.length() % 4; ++i) {
*ptr = *(src + offset + i);
ptr -= 1;
}
return true;
}
std::string HSExtStreamID::dump(){
_StrPrinter printer;
printer << " streamid : "<< streamid;
return std::move(printer);
}
std::string HSExtStreamID::dump() {
_StrPrinter printer;
printer << " streamid : " << streamid;
return std::move(printer);
}
} // namespace SRT

7
srt/HSExt.hpp
View File

@ -11,6 +11,7 @@ class HSExt : public Buffer {
public:
HSExt() = default;
virtual ~HSExt() = default;
enum {
SRT_CMD_REJECT = 0,
SRT_CMD_HSREQ = 1,
@ -36,13 +37,13 @@ public:
return _data->data();
}
return nullptr;
};
}
size_t size() const override {
if (_data) {
return _data->size();
}
return 0;
};
}
protected:
void loadHeader() {
@ -116,7 +117,7 @@ public:
*/
class HSExtStreamID : public HSExt {
public:
using Ptr = std::shared_ptr<HSExtStreamID>;
using Ptr = std::shared_ptr<HSExtStreamID>;
HSExtStreamID() = default;
~HSExtStreamID() = default;
bool loadFromData(uint8_t *buf, size_t len) override;

280
srt/Packet.cpp
View File

@ -10,19 +10,13 @@
#include <netdb.h>
#endif // defined(_WIN32)
#include <atomic>
#include "Util/logger.h"
#include "Util/MD5.h"
#include "Packet.hpp"
namespace SRT {
const size_t DataPacket::HEADER_SIZE;
const size_t ControlPacket::HEADER_SIZE;
const size_t HandshakePacket::HS_CONTENT_MIN_SIZE;
@ -38,7 +32,7 @@ bool DataPacket::isDataPacket(uint8_t *buf, size_t len) {
return false;
}
uint32_t DataPacket::getSocketID(uint8_t *buf, size_t len){
uint32_t DataPacket::getSocketID(uint8_t *buf, size_t len) {
uint8_t *ptr = buf;
ptr += 12;
return loadUint32(ptr);
@ -51,7 +45,7 @@ bool DataPacket::loadFromData(uint8_t *buf, size_t len) {
}
uint8_t *ptr = buf;
f = ptr[0] >> 7;
packet_seq_number = loadUint32(ptr)&0x7fffffff;
packet_seq_number = loadUint32(ptr) & 0x7fffffff;
ptr += 4;
PP = ptr[0] >> 6;
@ -71,7 +65,8 @@ bool DataPacket::loadFromData(uint8_t *buf, size_t len) {
_data->assign((char *)(buf), len);
return true;
}
bool DataPacket::storeToHeader(){
bool DataPacket::storeToHeader() {
if (!_data || _data->size() < HEADER_SIZE) {
WarnL << "data size less " << HEADER_SIZE;
return false;
@ -101,6 +96,7 @@ bool DataPacket::storeToHeader(){
ptr += 4;
return true;
}
bool DataPacket::storeToData(uint8_t *buf, size_t len) {
_data = BufferRaw::create();
_data->setCapacity(len + HEADER_SIZE);
@ -139,6 +135,7 @@ char *DataPacket::data() const {
return nullptr;
return _data->data();
}
size_t DataPacket::size() const {
if (!_data) {
return 0;
@ -151,6 +148,7 @@ char *DataPacket::payloadData() {
return nullptr;
return _data->data() + HEADER_SIZE;
}
size_t DataPacket::payloadSize() {
if (!_data) {
return 0;
@ -158,8 +156,6 @@ size_t DataPacket::payloadSize() {
return _data->size() - HEADER_SIZE;
}
bool ControlPacket::isControlPacket(uint8_t *buf, size_t len) {
if (len < HEADER_SIZE) {
WarnL << "data size" << len << " less " << HEADER_SIZE;
@ -199,6 +195,7 @@ bool ControlPacket::loadHeader() {
ptr += 4;
return true;
}
bool ControlPacket::storeToHeader() {
uint8_t *ptr = (uint8_t *)_data->data();
ptr[0] = 0x80;
@ -228,17 +225,20 @@ char *ControlPacket::data() const {
return nullptr;
return _data->data();
}
size_t ControlPacket::size() const {
if (!_data) {
return 0;
}
return _data->size();
}
uint32_t ControlPacket::getSocketID(uint8_t *buf, size_t len){
return loadUint32(buf+12);
uint32_t ControlPacket::getSocketID(uint8_t *buf, size_t len) {
return loadUint32(buf + 12);
}
bool HandshakePacket::loadFromData(uint8_t *buf, size_t len) {
if(HEADER_SIZE+HS_CONTENT_MIN_SIZE > len){
if (HEADER_SIZE + HS_CONTENT_MIN_SIZE > len) {
ErrorL << "size too smalle " << encryption_field;
return false;
}
@ -282,79 +282,75 @@ bool HandshakePacket::loadFromData(uint8_t *buf, size_t len) {
ErrorL << "not support encryption " << encryption_field;
}
if(extension_field == 0){
if (extension_field == 0) {
return true;
}
if(len == HEADER_SIZE+HS_CONTENT_MIN_SIZE){
//ErrorL << "extension filed not exist " << extension_field;
if (len == HEADER_SIZE + HS_CONTENT_MIN_SIZE) {
// ErrorL << "extension filed not exist " << extension_field;
return true;
}
return loadExtMessage(ptr,len-HS_CONTENT_MIN_SIZE-HEADER_SIZE);
return loadExtMessage(ptr, len - HS_CONTENT_MIN_SIZE - HEADER_SIZE);
}
bool HandshakePacket::loadExtMessage(uint8_t *buf,size_t len){
uint8_t* ptr = buf;
ext_list.clear();
uint16_t type;
uint16_t length;
HSExt::Ptr ext;
while(ptr<buf+len){
type = loadUint16(ptr);
length = loadUint16(ptr+2);
switch (type)
{
case HSExt::SRT_CMD_HSREQ:
case HSExt::SRT_CMD_HSRSP:
ext = std::make_shared<HSExtMessage>();
break;
case HSExt::SRT_CMD_SID:
ext = std::make_shared<HSExtStreamID>();
break;
bool HandshakePacket::loadExtMessage(uint8_t *buf, size_t len) {
uint8_t *ptr = buf;
ext_list.clear();
uint16_t type;
uint16_t length;
HSExt::Ptr ext;
while (ptr < buf + len) {
type = loadUint16(ptr);
length = loadUint16(ptr + 2);
switch (type) {
case HSExt::SRT_CMD_HSREQ:
case HSExt::SRT_CMD_HSRSP: ext = std::make_shared<HSExtMessage>(); break;
case HSExt::SRT_CMD_SID: ext = std::make_shared<HSExtStreamID>(); break;
default:
WarnL<<"not support ext "<<type;
WarnL << "not support ext " << type;
break;
}
if(ext){
if(ext->loadFromData(ptr,length*4+4)){
ext_list.push_back(std::move(ext));
}else{
WarnL<<"parse HS EXT failed type="<<type<<" len="<<length;
}
ext = nullptr;
}
}
if (ext) {
if (ext->loadFromData(ptr, length * 4 + 4)) {
ext_list.push_back(std::move(ext));
} else {
WarnL << "parse HS EXT failed type=" << type << " len=" << length;
}
ext = nullptr;
}
ptr += length*4+4;
}
return true;
ptr += length * 4 + 4;
}
return true;
}
bool HandshakePacket::storeExtMessage()
{
uint8_t* buf = (uint8_t*)_data->data()+HEADER_SIZE+48;
size_t len = _data->size()- HEADER_SIZE-48;
for(auto ex : ext_list){
memcpy(buf,ex->data(),ex->size());
buf += ex->size();
}
return true;
bool HandshakePacket::storeExtMessage() {
uint8_t *buf = (uint8_t *)_data->data() + HEADER_SIZE + 48;
size_t len = _data->size() - HEADER_SIZE - 48;
for (auto ex : ext_list) {
memcpy(buf, ex->data(), ex->size());
buf += ex->size();
}
return true;
}
size_t HandshakePacket::getExtSize() {
size_t size = 0;
for (auto it : ext_list) {
size += it->size();
}
return size;
}
size_t HandshakePacket::getExtSize(){
size_t size = 0;
for(auto it : ext_list){
size += it->size();
}
return size;
}
bool HandshakePacket::storeToData() {
_data = BufferRaw::create();
for(auto ex : ext_list){
for (auto ex : ext_list) {
ex->storeToData();
}
auto ext_size = getExtSize();
_data->setCapacity(HEADER_SIZE + 48+ext_size);
_data->setSize(HEADER_SIZE + 48+ext_size);
_data->setCapacity(HEADER_SIZE + 48 + ext_size);
_data->setSize(HEADER_SIZE + 48 + ext_size);
control_type = ControlPacket::HANDSHAKE;
sub_type = 0;
@ -399,54 +395,53 @@ bool HandshakePacket::storeToData() {
assert(encryption_field == NO_ENCRYPTION);
return storeExtMessage();
}
bool HandshakePacket::isHandshakePacket(uint8_t *buf, size_t len){
if(!ControlPacket::isControlPacket(buf,len)){
bool HandshakePacket::isHandshakePacket(uint8_t *buf, size_t len) {
if (!ControlPacket::isControlPacket(buf, len)) {
return false;
}
if(len < HEADER_SIZE+48){
if (len < HEADER_SIZE + 48) {
return false;
}
return ControlPacket::getControlType(buf,len) == HANDSHAKE;
return ControlPacket::getControlType(buf, len) == HANDSHAKE;
}
uint32_t HandshakePacket::getHandshakeType(uint8_t *buf, size_t len){
uint8_t *ptr = buf+HEADER_SIZE+5*4;
uint32_t HandshakePacket::getHandshakeType(uint8_t *buf, size_t len) {
uint8_t *ptr = buf + HEADER_SIZE + 5 * 4;
return loadUint32(ptr);
}
uint32_t HandshakePacket::getSynCookie(uint8_t *buf, size_t len){
uint8_t *ptr = buf+HEADER_SIZE+7*4;
uint32_t HandshakePacket::getSynCookie(uint8_t *buf, size_t len) {
uint8_t *ptr = buf + HEADER_SIZE + 7 * 4;
return loadUint32(ptr);
}
void HandshakePacket::assignPeerIP(struct sockaddr_storage* addr){
memset(peer_ip_addr,0,sizeof(peer_ip_addr)*sizeof(peer_ip_addr[0]));
if(addr->ss_family == AF_INET){
struct sockaddr_in * ipv4 = (struct sockaddr_in *)addr;
void HandshakePacket::assignPeerIP(struct sockaddr_storage *addr) {
memset(peer_ip_addr, 0, sizeof(peer_ip_addr) * sizeof(peer_ip_addr[0]));
if (addr->ss_family == AF_INET) {
struct sockaddr_in *ipv4 = (struct sockaddr_in *)addr;
//抓包 奇怪好像是小头端？？？
storeUint32LE(peer_ip_addr,ipv4->sin_addr.s_addr);
}else if(addr->ss_family == AF_INET6){
storeUint32LE(peer_ip_addr, ipv4->sin_addr.s_addr);
} else if (addr->ss_family == AF_INET6) {
if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)addr)->sin6_addr)) {
struct in_addr addr4;
memcpy(&addr4, 12 + (char *)&(((struct sockaddr_in6 *)addr)->sin6_addr), 4);
storeUint32LE(peer_ip_addr,addr4.s_addr);
}else{
const sockaddr_in6* ipv6 = (struct sockaddr_in6 *)addr;
memcpy(peer_ip_addr,ipv6->sin6_addr.s6_addr,sizeof(peer_ip_addr)*sizeof(peer_ip_addr[0]));
}
struct in_addr addr4;
memcpy(&addr4, 12 + (char *)&(((struct sockaddr_in6 *)addr)->sin6_addr), 4);
storeUint32LE(peer_ip_addr, addr4.s_addr);
} else {
const sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)addr;
memcpy(peer_ip_addr, ipv6->sin6_addr.s6_addr, sizeof(peer_ip_addr) * sizeof(peer_ip_addr[0]));
}
}
}
uint32_t HandshakePacket::generateSynCookie(struct sockaddr_storage* addr,TimePoint ts,uint32_t current_cookie, int correction ){
static std::atomic<uint32_t> distractor{0};
uint32_t rollover = distractor.load() + 10;
uint32_t HandshakePacket::generateSynCookie(
struct sockaddr_storage *addr, TimePoint ts, uint32_t current_cookie, int correction) {
static std::atomic<uint32_t> distractor { 0 };
uint32_t rollover = distractor.load() + 10;
for (;;)
{
while (true) {
// SYN cookie
char clienthost[NI_MAXHOST];
char clientport[NI_MAXSERV];
@ -463,34 +458,36 @@ uint32_t HandshakePacket::generateSynCookie(struct sockaddr_storage* addr,TimePo
cookiestr << clienthost << ":" << clientport << ":" << timestamp;
union {
unsigned char cookie[16];
uint32_t cookie_val;
uint32_t cookie_val;
};
MD5 md5(cookiestr.str());
memcpy(cookie,md5.rawdigest().c_str(),16);
memcpy(cookie, md5.rawdigest().c_str(), 16);
if (cookie_val != current_cookie)
if (cookie_val != current_cookie) {
return cookie_val;
}
++distractor;
// This is just to make the loop formally breakable,
// but this is virtually impossible to happen.
if (distractor == rollover)
if (distractor == rollover) {
return cookie_val;
}
}
}
bool KeepLivePacket::loadFromData(uint8_t *buf, size_t len){
bool KeepLivePacket::loadFromData(uint8_t *buf, size_t len) {
if (len < HEADER_SIZE) {
WarnL << "data size" << len << " less " << HEADER_SIZE;
return false;
}
_data = BufferRaw::create();
_data->assign((char*)buf,len);
_data->assign((char *)buf, len);
return loadHeader();
}
bool KeepLivePacket::storeToData(){
bool KeepLivePacket::storeToData() {
control_type = ControlPacket::KEEPALIVE;
sub_type = 0;
@ -506,22 +503,21 @@ bool NAKPacket::loadFromData(uint8_t *buf, size_t len) {
return false;
}
_data = BufferRaw::create();
_data->assign((char*)buf,len);
_data->assign((char *)buf, len);
loadHeader();
uint8_t* ptr = (uint8_t*)_data->data()+HEADER_SIZE;
uint8_t* end = (uint8_t*)_data->data()+_data->size();
uint8_t *ptr = (uint8_t *)_data->data() + HEADER_SIZE;
uint8_t *end = (uint8_t *)_data->data() + _data->size();
LostPair lost;
while (ptr<end)
{
if((*ptr)&0x80){
lost.first = loadUint32(ptr)&0x7fffffff;
lost.second = loadUint32(ptr+4)&0x7fffffff;
while (ptr < end) {
if ((*ptr) & 0x80) {
lost.first = loadUint32(ptr) & 0x7fffffff;
lost.second = loadUint32(ptr + 4) & 0x7fffffff;
lost.second += 1;
ptr += 8;
}else{
} else {
lost.first = loadUint32(ptr);
lost.second = lost.first +1;
lost.second = lost.first + 1;
ptr += 4;
}
lost_list.push_back(lost);
@ -534,62 +530,62 @@ bool NAKPacket::storeToData() {
size_t cif_size = getCIFSize();
_data = BufferRaw::create();
_data->setCapacity(HEADER_SIZE+cif_size);
_data->setSize(HEADER_SIZE+cif_size);
_data->setCapacity(HEADER_SIZE + cif_size);
_data->setSize(HEADER_SIZE + cif_size);
storeToHeader();
uint8_t* ptr = (uint8_t*)_data->data()+HEADER_SIZE;
uint8_t *ptr = (uint8_t *)_data->data() + HEADER_SIZE;
for(auto it : lost_list){
if(it.first+1 ==it.second){
storeUint32(ptr,it.first);
ptr[0] = ptr[0]&0x7f;
ptr += 4;
}else{
storeUint32(ptr,it.first);
ptr[0] |= 0x80;
for (auto it : lost_list) {
if (it.first + 1 == it.second) {
storeUint32(ptr, it.first);
ptr[0] = ptr[0] & 0x7f;
ptr += 4;
} else {
storeUint32(ptr, it.first);
ptr[0] |= 0x80;
storeUint32(ptr+4,it.second-1);
//ptr[4] = ptr[4]&0x7f;
storeUint32(ptr + 4, it.second - 1);
// ptr[4] = ptr[4]&0x7f;
ptr += 8;
ptr += 8;
}
}
return true;
}
size_t NAKPacket::getCIFSize(){
size_t NAKPacket::getCIFSize() {
size_t size = 0;
for(auto it : lost_list){
if(it.first+1 ==it.second){
for (auto it : lost_list) {
if (it.first + 1 == it.second) {
size += 4;
}else{
} else {
size += 8;
}
}
return size;
}
std::string NAKPacket::dump(){
std::string NAKPacket::dump() {
_StrPrinter printer;
for (auto it : lost_list) {
printer<<"[ "<<it.first<<" , "<<it.second-1<<" ]";
printer << "[ " << it.first << " , " << it.second - 1 << " ]";
}
return std::move(printer);
}
bool MsgDropReqPacket::loadFromData(uint8_t *buf, size_t len) {
if (len < HEADER_SIZE+8) {
if (len < HEADER_SIZE + 8) {
WarnL << "data size" << len << " less " << HEADER_SIZE;
return false;
}
_data = BufferRaw::create();
_data->assign((char*)buf,len);
_data->assign((char *)buf, len);
loadHeader();
uint8_t* ptr = (uint8_t*)_data->data()+HEADER_SIZE;
uint8_t *ptr = (uint8_t *)_data->data() + HEADER_SIZE;
first_pkt_seq_num = loadUint32(ptr);
ptr += 4;
@ -602,17 +598,17 @@ bool MsgDropReqPacket::storeToData() {
control_type = DROPREQ;
sub_type = 0;
_data = BufferRaw::create();
_data->setCapacity(HEADER_SIZE+8);
_data->setSize(HEADER_SIZE+8);
_data->setCapacity(HEADER_SIZE + 8);
_data->setSize(HEADER_SIZE + 8);
storeToHeader();
uint8_t* ptr = (uint8_t*)_data->data()+HEADER_SIZE;
uint8_t *ptr = (uint8_t *)_data->data() + HEADER_SIZE;
storeUint32(ptr,first_pkt_seq_num);
storeUint32(ptr, first_pkt_seq_num);
ptr += 4;
storeUint32(ptr,last_pkt_seq_num);
storeUint32(ptr, last_pkt_seq_num);
ptr += 4;
return true;
}

42
srt/Packet.hpp
View File

@ -5,6 +5,7 @@
#include <vector>
#include "Network/Buffer.h"
#include "Network/sockutil.h"
#include "Util/logger.h"
#include "Common.hpp"
@ -171,7 +172,7 @@ class HandshakePacket : public ControlPacket {
public:
using Ptr = std::shared_ptr<HandshakePacket>;
enum { NO_ENCRYPTION = 0, AES_128 = 1, AES_196 = 2, AES_256 = 3 };
static const size_t HS_CONTENT_MIN_SIZE = 48;
static const size_t HS_CONTENT_MIN_SIZE = 48;
enum {
HS_TYPE_DONE = 0xFFFFFFFD,
HS_TYPE_AGREEMENT = 0xFFFFFFFE,
@ -181,18 +182,16 @@ public:
};
enum { HS_EXT_FILED_HSREQ = 0x00000001, HS_EXT_FILED_KMREQ = 0x00000002, HS_EXT_FILED_CONFIG = 0x00000004 };
HandshakePacket() = default;
~HandshakePacket() = default;
static bool isHandshakePacket(uint8_t *buf, size_t len);
static uint32_t getHandshakeType(uint8_t *buf, size_t len);
static uint32_t getSynCookie(uint8_t *buf, size_t len);
static uint32_t generateSynCookie(struct sockaddr_storage* addr,TimePoint ts,uint32_t current_cookie = 0, int correction = 0);
static uint32_t generateSynCookie(struct sockaddr_storage *addr, TimePoint ts, uint32_t current_cookie = 0, int correction = 0);
void assignPeerIP(struct sockaddr_storage* addr);
void assignPeerIP(struct sockaddr_storage *addr);
///////ControlPacket override///////
bool loadFromData(uint8_t *buf, size_t len) override;
bool storeToData() override;
@ -209,8 +208,9 @@ public:
uint8_t peer_ip_addr[16];
std::vector<HSExt::Ptr> ext_list;
private:
bool loadExtMessage(uint8_t *buf,size_t len);
bool loadExtMessage(uint8_t *buf, size_t len);
bool storeExtMessage();
size_t getExtSize();
};
@ -229,13 +229,12 @@ private:
Figure 12: Keep-Alive control packet
https://haivision.github.io/srt-rfc/draft-sharabayko-srt.html#name-keep-alive
*/
class KeepLivePacket : public ControlPacket
{
class KeepLivePacket : public ControlPacket {
public:
using Ptr = std::shared_ptr<KeepLivePacket>;
KeepLivePacket() = default;
~KeepLivePacket() = default;
///////ControlPacket override///////
///////ControlPacket override///////
bool loadFromData(uint8_t *buf, size_t len) override;
bool storeToData() override;
};
@ -265,11 +264,10 @@ An SRT NAK packet is formatted as follows:
Figure 14: NAK control packet
https://haivision.github.io/srt-rfc/draft-sharabayko-srt.html#name-nak-control-packet
*/
class NAKPacket : public ControlPacket
{
class NAKPacket : public ControlPacket {
public:
using Ptr = std::shared_ptr<NAKPacket>;
using LostPair = std::pair<uint32_t,uint32_t>;
using LostPair = std::pair<uint32_t, uint32_t>;
NAKPacket() = default;
~NAKPacket() = default;
std::string dump();
@ -278,11 +276,11 @@ public:
bool storeToData() override;
std::list<LostPair> lost_list;
private:
size_t getCIFSize();
};
/*
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
@ -302,9 +300,8 @@ private:
Figure 18: Drop Request control packet
https://haivision.github.io/srt-rfc/draft-sharabayko-srt.html#name-message-drop-request
*/
class MsgDropReqPacket : public ControlPacket
{
public:
class MsgDropReqPacket : public ControlPacket {
public:
using Ptr = std::shared_ptr<MsgDropReqPacket>;
MsgDropReqPacket() = default;
~MsgDropReqPacket() = default;
@ -332,13 +329,13 @@ class MsgDropReqPacket : public ControlPacket
https://haivision.github.io/srt-rfc/draft-sharabayko-srt.html#name-shutdown
*/
class ShutDownPacket : public ControlPacket
{
class ShutDownPacket : public ControlPacket {
public:
using Ptr = std::shared_ptr<ShutDownPacket>;
ShutDownPacket() = default;
~ShutDownPacket() = default;
///////ControlPacket override///////
///////ControlPacket override///////
bool loadFromData(uint8_t *buf, size_t len) override {
if (len < HEADER_SIZE) {
WarnL << "data size" << len << " less " << HEADER_SIZE;
@ -348,7 +345,7 @@ public:
_data->assign((char *)buf, len);
return loadHeader();
};
}
bool storeToData() override {
control_type = ControlPacket::SHUTDOWN;
sub_type = 0;
@ -356,8 +353,9 @@ public:
_data->setCapacity(HEADER_SIZE);
_data->setSize(HEADER_SIZE);
return storeToHeader();
};
}
};
} // namespace SRT
#endif //ZLMEDIAKIT_SRT_PACKET_H

171
srt/PacketQueue.cpp
View File

@ -2,80 +2,86 @@
namespace SRT {
#define MAX_SEQ 0x7fffffff
#define MAX_TS 0xffffffff
inline uint32_t genExpectedSeq(uint32_t seq){
#define MAX_SEQ 0x7fffffff
#define MAX_TS 0xffffffff
static inline uint32_t genExpectedSeq(uint32_t seq) {
return MAX_SEQ & seq;
}
inline bool isSeqEdge(uint32_t seq,uint32_t cap){
if(seq >(MAX_SEQ - cap)){
static inline bool isSeqEdge(uint32_t seq, uint32_t cap) {
if (seq > (MAX_SEQ - cap)) {
return true;
}
return false;
}
inline bool isTSCycle(uint32_t first,uint32_t second){
static inline bool isTSCycle(uint32_t first, uint32_t second) {
uint32_t diff;
if(first>second){
if (first > second) {
diff = first - second;
}else{
} else {
diff = second - first;
}
if(diff > (MAX_TS>>1)){
if (diff > (MAX_TS >> 1)) {
return true;
}else{
} else {
return false;
}
}
PacketQueue::PacketQueue(uint32_t max_size, uint32_t init_seq, uint32_t lantency)
: _pkt_expected_seq(init_seq)
, _pkt_cap(max_size)
, _pkt_lantency(lantency) {
}
void PacketQueue::tryInsertPkt(DataPacket::Ptr pkt){
PacketQueue::PacketQueue(uint32_t max_size, uint32_t init_seq, uint32_t latency)
: _pkt_cap(max_size)
, _pkt_latency(latency)
, _pkt_expected_seq(init_seq) {}
void PacketQueue::tryInsertPkt(DataPacket::Ptr pkt) {
if (_pkt_expected_seq <= pkt->packet_seq_number) {
auto diff = pkt->packet_seq_number - _pkt_expected_seq;
if(diff >= (MAX_SEQ>>1)){
TraceL << "drop packet too later for cycle "<< "expected seq=" << _pkt_expected_seq << " pkt seq=" << pkt->packet_seq_number;
if (diff >= (MAX_SEQ >> 1)) {
TraceL << "drop packet too later for cycle "
<< "expected seq=" << _pkt_expected_seq << " pkt seq=" << pkt->packet_seq_number;
return;
}else{
} else {
_pkt_map.emplace(pkt->packet_seq_number, pkt);
}
} else {
auto diff = _pkt_expected_seq - pkt->packet_seq_number;
if(diff >= (MAX_SEQ>>1)){
_pkt_map.emplace(pkt->packet_seq_number, pkt);
TraceL<<" cycle packet "<<"expected seq=" << _pkt_expected_seq << " pkt seq=" << pkt->packet_seq_number;
}else{
//TraceL << "drop packet too later "<< "expected seq=" << _pkt_expected_seq << " pkt seq=" << pkt->packet_seq_number;
if (diff >= (MAX_SEQ >> 1)) {
_pkt_map.emplace(pkt->packet_seq_number, pkt);
TraceL << " cycle packet "
<< "expected seq=" << _pkt_expected_seq << " pkt seq=" << pkt->packet_seq_number;
} else {
// TraceL << "drop packet too later "<< "expected seq=" << _pkt_expected_seq << " pkt seq=" <<
// pkt->packet_seq_number;
}
}
}
bool PacketQueue::inputPacket(DataPacket::Ptr pkt,std::list<DataPacket::Ptr>& out) {
bool PacketQueue::inputPacket(DataPacket::Ptr pkt, std::list<DataPacket::Ptr> &out) {
tryInsertPkt(pkt);
auto it = _pkt_map.find(_pkt_expected_seq);
while ( it != _pkt_map.end()) {
while (it != _pkt_map.end()) {
out.push_back(it->second);
_pkt_map.erase(it);
_pkt_expected_seq = genExpectedSeq(_pkt_expected_seq+1);
_pkt_expected_seq = genExpectedSeq(_pkt_expected_seq + 1);
it = _pkt_map.find(_pkt_expected_seq);
}
while (_pkt_map.size() > _pkt_cap) {
// 防止回环
it = _pkt_map.find(_pkt_expected_seq);
if(it != _pkt_map.end()){
if (it != _pkt_map.end()) {
out.push_back(it->second);
_pkt_map.erase(it);
}
_pkt_expected_seq = genExpectedSeq(_pkt_expected_seq + 1);
}
while (timeLantency() > _pkt_lantency) {
while (timeLatency() > _pkt_latency) {
it = _pkt_map.find(_pkt_expected_seq);
if(it != _pkt_map.end()){
if (it != _pkt_map.end()) {
out.push_back(it->second);
_pkt_map.erase(it);
}
@ -85,22 +91,22 @@ bool PacketQueue::inputPacket(DataPacket::Ptr pkt,std::list<DataPacket::Ptr>& ou
return true;
}
bool PacketQueue::drop(uint32_t first, uint32_t last,std::list<DataPacket::Ptr>& out){
uint32_t end = genExpectedSeq(last+1);
bool PacketQueue::drop(uint32_t first, uint32_t last, std::list<DataPacket::Ptr> &out) {
uint32_t end = genExpectedSeq(last + 1);
decltype(_pkt_map.end()) it;
for(uint32_t i =_pkt_expected_seq;i< end;){
it = _pkt_map.find(i);
if(it != _pkt_map.end()){
out.push_back(it->second);
_pkt_map.erase(it);
}
i = genExpectedSeq(i+1);
for (uint32_t i = _pkt_expected_seq; i < end;) {
it = _pkt_map.find(i);
if (it != _pkt_map.end()) {
out.push_back(it->second);
_pkt_map.erase(it);
}
i = genExpectedSeq(i + 1);
}
_pkt_expected_seq = end;
return true;
}
uint32_t PacketQueue::timeLantency() {
uint32_t PacketQueue::timeLatency() {
if (_pkt_map.empty()) {
return 0;
}
@ -108,15 +114,15 @@ uint32_t PacketQueue::timeLantency() {
auto first = _pkt_map.begin()->second->timestamp;
auto last = _pkt_map.rbegin()->second->timestamp;
uint32_t dur;
if(last>first){
if (last > first) {
dur = last - first;
}else{
} else {
dur = first - last;
}
if(dur > 0x80000000){
if (dur > 0x80000000) {
dur = MAX_TS - dur;
WarnL<<"cycle dur "<<dur;
WarnL << "cycle dur " << dur;
}
return dur;
@ -124,16 +130,16 @@ uint32_t PacketQueue::timeLantency() {
std::list<PacketQueue::LostPair> PacketQueue::getLostSeq() {
std::list<PacketQueue::LostPair> re;
if(_pkt_map.empty()){
if (_pkt_map.empty()) {
return re;
}
if(getExpectedSize() == getSize()){
if (getExpectedSize() == getSize()) {
return re;
}
uint32_t end = 0;
uint32_t first,last;
uint32_t first, last;
first = _pkt_map.begin()->second->packet_seq_number;
last = _pkt_map.rbegin()->second->packet_seq_number;
@ -149,71 +155,76 @@ std::list<PacketQueue::LostPair> PacketQueue::getLostSeq() {
uint32_t i = _pkt_expected_seq;
bool finish = true;
for(i = _pkt_expected_seq;i<=end;){
if(_pkt_map.find(i) == _pkt_map.end()){
if(finish){
for (i = _pkt_expected_seq; i <= end;) {
if (_pkt_map.find(i) == _pkt_map.end()) {
if (finish) {
finish = false;
lost.first = i;
lost.second = i+1;
}else{
lost.second = i+1;
lost.second = i + 1;
} else {
lost.second = i + 1;
}
}else{
if(!finish){
} else {
if (!finish) {
finish = true;
re.push_back(lost);
}
}
i = genExpectedSeq(i+1);
i = genExpectedSeq(i + 1);
}
return re;
}
size_t PacketQueue::getSize(){
size_t PacketQueue::getSize() {
return _pkt_map.size();
}
size_t PacketQueue::getExpectedSize() {
if(_pkt_map.empty()){
if (_pkt_map.empty()) {
return 0;
}
uint32_t max = _pkt_map.rbegin()->first;
uint32_t min = _pkt_map.begin()->first;
if((max-min)>=(MAX_SEQ>>1)){
TraceL<<"cycle "<<"expected seq "<<_pkt_expected_seq<<" min "<<min<<" max "<<max<<" size "<<_pkt_map.size();
return MAX_SEQ-_pkt_expected_seq+min+1;
}else{
return max-_pkt_expected_seq+1;
if ((max - min) >= (MAX_SEQ >> 1)) {
TraceL << "cycle "
<< "expected seq " << _pkt_expected_seq << " min " << min << " max " << max << " size "
<< _pkt_map.size();
return MAX_SEQ - _pkt_expected_seq + min + 1;
} else {
return max - _pkt_expected_seq + 1;
}
}
size_t PacketQueue::getAvailableBufferSize(){
auto size = getExpectedSize();
if(_pkt_cap > size){
size_t PacketQueue::getAvailableBufferSize() {
auto size = getExpectedSize();
if (_pkt_cap > size) {
return _pkt_cap - size;
}
if(_pkt_cap > _pkt_map.size()){
if (_pkt_cap > _pkt_map.size()) {
return _pkt_cap - _pkt_map.size();
}
WarnL<<" cap "<<_pkt_cap<<" expected size "<<size<<" map size "<<_pkt_map.size();
WarnL << " cap " << _pkt_cap << " expected size " << size << " map size " << _pkt_map.size();
return _pkt_cap;
}
uint32_t PacketQueue::getExpectedSeq(){
uint32_t PacketQueue::getExpectedSeq() {
return _pkt_expected_seq;
}
std::string PacketQueue::dump(){
_StrPrinter printer;
if(_pkt_map.empty()){
printer<<" expected seq :"<<_pkt_expected_seq;
}else{
printer<<" expected seq :"<<_pkt_expected_seq<<" size:"<<_pkt_map.size()<<" first:"<<_pkt_map.begin()->second->packet_seq_number;
printer<<" last:"<<_pkt_map.rbegin()->second->packet_seq_number;
printer<<" latency:"<<timeLantency()/1e3;
}
return std::move(printer);
std::string PacketQueue::dump() {
_StrPrinter printer;
if (_pkt_map.empty()) {
printer << " expected seq :" << _pkt_expected_seq;
} else {
printer << " expected seq :" << _pkt_expected_seq << " size:" << _pkt_map.size()
<< " first:" << _pkt_map.begin()->second->packet_seq_number;
printer << " last:" << _pkt_map.rbegin()->second->packet_seq_number;
printer << " latency:" << timeLatency() / 1e3;
}
return std::move(printer);
}
} // namespace SRT

21
srt/PacketQueue.hpp
View File

@ -3,8 +3,8 @@
#include "Packet.hpp"
#include <algorithm>
#include <list>
#include <memory>
#include <map>
#include <memory>
#include <tuple>
#include <utility>
@ -16,11 +16,11 @@ public:
using Ptr = std::shared_ptr<PacketQueue>;
using LostPair = std::pair<uint32_t, uint32_t>;
PacketQueue(uint32_t max_size, uint32_t init_seq, uint32_t lantency);
PacketQueue(uint32_t max_size, uint32_t init_seq, uint32_t latency);
~PacketQueue() = default;
bool inputPacket(DataPacket::Ptr pkt,std::list<DataPacket::Ptr>& out);
bool inputPacket(DataPacket::Ptr pkt, std::list<DataPacket::Ptr> &out);
uint32_t timeLantency();
uint32_t timeLatency();
std::list<LostPair> getLostSeq();
size_t getSize();
@ -28,18 +28,17 @@ public:
size_t getAvailableBufferSize();
uint32_t getExpectedSeq();
bool drop(uint32_t first, uint32_t last,std::list<DataPacket::Ptr>& out);
std::string dump();
bool drop(uint32_t first, uint32_t last, std::list<DataPacket::Ptr> &out);
private:
void tryInsertPkt(DataPacket::Ptr pkt);
private:
std::map<uint32_t, DataPacket::Ptr> _pkt_map;
uint32_t _pkt_expected_seq = 0;
uint32_t _pkt_cap;
uint32_t _pkt_lantency;
uint32_t _pkt_latency;
uint32_t _pkt_expected_seq = 0;
std::map<uint32_t, DataPacket::Ptr> _pkt_map;
};
} // namespace SRT

12
srt/PacketSendQueue.cpp
View File

@ -2,9 +2,10 @@
namespace SRT {
PacketSendQueue::PacketSendQueue(uint32_t max_size, uint32_t lantency)
PacketSendQueue::PacketSendQueue(uint32_t max_size, uint32_t latency)
: _pkt_cap(max_size)
, _pkt_lantency(lantency) {}
, _pkt_latency(latency) {}
bool PacketSendQueue::drop(uint32_t num) {
decltype(_pkt_cache.begin()) it;
for (it = _pkt_cache.begin(); it != _pkt_cache.end(); ++it) {
@ -17,12 +18,13 @@ bool PacketSendQueue::drop(uint32_t num) {
}
return true;
}
bool PacketSendQueue::inputPacket(DataPacket::Ptr pkt) {
_pkt_cache.push_back(pkt);
while (_pkt_cache.size() > _pkt_cap) {
_pkt_cache.pop_front();
}
while (timeLantency() > _pkt_lantency) {
while (timeLatency() > _pkt_latency) {
_pkt_cache.pop_front();
}
return true;
@ -53,7 +55,7 @@ std::list<DataPacket::Ptr> PacketSendQueue::findPacketBySeq(uint32_t start, uint
return re;
}
uint32_t PacketSendQueue::timeLantency() {
uint32_t PacketSendQueue::timeLatency() {
if (_pkt_cache.empty()) {
return 0;
}
@ -67,7 +69,7 @@ uint32_t PacketSendQueue::timeLantency() {
dur = first - last;
}
if (dur > (0x01 << 31)) {
TraceL << "cycle timeLantency " << dur;
TraceL << "cycle timeLatency " << dur;
dur = 0xffffffff - dur;
}

18
srt/PacketSendQueue.hpp
View File

@ -1,5 +1,6 @@
#ifndef ZLMEDIAKIT_SRT_PACKET_SEND_QUEUE_H
#define ZLMEDIAKIT_SRT_PACKET_SEND_QUEUE_H
#include "Packet.hpp"
#include <algorithm>
#include <list>
@ -7,23 +8,30 @@
#include <set>
#include <tuple>
#include <utility>
namespace SRT {
class PacketSendQueue {
public:
using Ptr = std::shared_ptr<PacketSendQueue>;
using LostPair = std::pair<uint32_t, uint32_t>;
PacketSendQueue(uint32_t max_size, uint32_t lantency);
PacketSendQueue(uint32_t max_size, uint32_t latency);
~PacketSendQueue() = default;
bool drop(uint32_t num);
bool inputPacket(DataPacket::Ptr pkt);
std::list<DataPacket::Ptr> findPacketBySeq(uint32_t start,uint32_t end);
std::list<DataPacket::Ptr> findPacketBySeq(uint32_t start, uint32_t end);
private:
uint32_t timeLantency();
uint32_t timeLatency();
private:
std::list<DataPacket::Ptr> _pkt_cache;
uint32_t _pkt_cap;
uint32_t _pkt_lantency;
uint32_t _pkt_latency;
std::list<DataPacket::Ptr> _pkt_cache;
};
} // namespace SRT
#endif // ZLMEDIAKIT_SRT_PACKET_SEND_QUEUE_H

72
srt/SrtSession.cpp
View File

@ -10,10 +10,10 @@ using namespace mediakit;
SrtSession::SrtSession(const Socket::Ptr &sock)
: UdpSession(sock) {
socklen_t addr_len = sizeof(_peer_addr);
memset(&_peer_addr,0,addr_len);
//TraceL<<"before addr len "<<addr_len;
memset(&_peer_addr, 0, addr_len);
// TraceL<<"before addr len "<<addr_len;
getpeername(sock->rawFD(), (struct sockaddr *)&_peer_addr, &addr_len);
//TraceL<<"after addr len "<<addr_len<<" family "<<_peer_addr.ss_family;
// TraceL<<"after addr len "<<addr_len<<" family "<<_peer_addr.ss_family;
}
SrtSession::~SrtSession() {
@ -21,40 +21,42 @@ SrtSession::~SrtSession() {
}
EventPoller::Ptr SrtSession::queryPoller(const Buffer::Ptr &buffer) {
uint8_t* data = (uint8_t*)buffer->data();
uint8_t *data = (uint8_t *)buffer->data();
size_t size = buffer->size();
if(DataPacket::isDataPacket(data,size)){
uint32_t socket_id = DataPacket::getSocketID(data,size);
if (DataPacket::isDataPacket(data, size)) {
uint32_t socket_id = DataPacket::getSocketID(data, size);
auto trans = SrtTransportManager::Instance().getItem(std::to_string(socket_id));
return trans ? trans->getPoller() : nullptr;
}
if(HandshakePacket::isHandshakePacket(data,size)){
auto type = HandshakePacket::getHandshakeType(data,size);
if(type == HandshakePacket::HS_TYPE_INDUCTION){
if (HandshakePacket::isHandshakePacket(data, size)) {
auto type = HandshakePacket::getHandshakeType(data, size);
if (type == HandshakePacket::HS_TYPE_INDUCTION) {
// 握手第一阶段
return nullptr;
}else if(type == HandshakePacket::HS_TYPE_CONCLUSION){
} else if (type == HandshakePacket::HS_TYPE_CONCLUSION) {
// 握手第二阶段
uint32_t sync_cookie = HandshakePacket::getSynCookie(data,size);
uint32_t sync_cookie = HandshakePacket::getSynCookie(data, size);
auto trans = SrtTransportManager::Instance().getHandshakeItem(std::to_string(sync_cookie));
return trans ? trans->getPoller() : nullptr;
}else{
WarnL<<" not reach there";
} else {
WarnL << " not reach there";
}
}else{
uint32_t socket_id = ControlPacket::getSocketID(data,size);
} else {
uint32_t socket_id = ControlPacket::getSocketID(data, size);
auto trans = SrtTransportManager::Instance().getItem(std::to_string(socket_id));
return trans ? trans->getPoller() : nullptr;
}
return nullptr;
}
void SrtSession::attachServer(const toolkit::Server &server){
SockUtil::setRecvBuf(getSock()->rawFD(),1024 * 1024);
void SrtSession::attachServer(const toolkit::Server &server) {
SockUtil::setRecvBuf(getSock()->rawFD(), 1024 * 1024);
}
void SrtSession::onRecv(const Buffer::Ptr &buffer) {
uint8_t* data = (uint8_t*)buffer->data();
uint8_t *data = (uint8_t *)buffer->data();
size_t size = buffer->size();
if (_find_transport) {
@ -64,10 +66,10 @@ void SrtSession::onRecv(const Buffer::Ptr &buffer) {
if (DataPacket::isDataPacket(data, size)) {
uint32_t socket_id = DataPacket::getSocketID(data, size);
auto trans = SrtTransportManager::Instance().getItem(std::to_string(socket_id));
if(trans){
if (trans) {
_transport = std::move(trans);
}else{
WarnL<<" data packet not find transport ";
} else {
WarnL << " data packet not find transport ";
}
}
@ -92,24 +94,24 @@ void SrtSession::onRecv(const Buffer::Ptr &buffer) {
} else {
uint32_t socket_id = ControlPacket::getSocketID(data, size);
auto trans = SrtTransportManager::Instance().getItem(std::to_string(socket_id));
if(trans){
if (trans) {
_transport = std::move(trans);
}else{
} else {
WarnL << " not find transport";
}
}
if(_transport){
if (_transport) {
_transport->setSession(shared_from_this());
}
InfoP(this);
}
_ticker.resetTime();
if(_transport){
_transport->inputSockData(data,size,&_peer_addr);
}else{
//WarnL<< "ingore data";
if (_transport) {
_transport->inputSockData(data, size, &_peer_addr);
} else {
// WarnL<< "ingore data";
}
}
@ -122,18 +124,20 @@ void SrtSession::onError(const SockException &err) {
if (!_transport) {
return;
}
// 防止互相引用导致不释放
auto transport = std::move(_transport);
getPoller()->async([transport,err] {
//延时减引用，防止使用transport对象时，销毁对象
transport->onShutdown(err);
}, false);
getPoller()->async(
[transport, err] {
//延时减引用，防止使用transport对象时，销毁对象
transport->onShutdown(err);
},
false);
}
void SrtSession::onManager() {
GET_CONFIG(float, timeoutSec, kTimeOutSec);
if (_ticker.elapsedTime() > timeoutSec*1000) {
if (_ticker.elapsedTime() > timeoutSec * 1000) {
shutdown(SockException(Err_timeout, "srt connection timeout"));
return;
}

3
srt/SrtSession.hpp
View File

@ -24,8 +24,7 @@ private:
Ticker _ticker;
struct sockaddr_storage _peer_addr;
SrtTransport::Ptr _transport;
};
} // namespace SRT
#endif //ZLMEDIAKIT_SRT_SESSION_H
#endif // ZLMEDIAKIT_SRT_SESSION_H

395
srt/SrtTransport.cpp
View File

@ -1,32 +1,33 @@
#include <stdlib.h>
#include "Ack.hpp"
#include "Packet.hpp"
#include "SrtTransport.hpp"
#include "Util/onceToken.h"
#include "SrtTransport.hpp"
#include "Packet.hpp"
#include "Ack.hpp"
namespace SRT {
#define SRT_FIELD "srt."
//srt 超时时间
const std::string kTimeOutSec = SRT_FIELD"timeoutSec";
//srt 单端口udp服务器
const std::string kPort = SRT_FIELD"port";
// srt 超时时间
const std::string kTimeOutSec = SRT_FIELD "timeoutSec";
// srt 单端口udp服务器
const std::string kPort = SRT_FIELD "port";
const std::string kLatencyMul = SRT_FIELD "latencyMul";
const std::string kLantencyMul = SRT_FIELD"lantencyMul";
static std::atomic<uint32_t> s_srt_socket_id_generate { 125 };
static std::atomic<uint32_t> s_srt_socket_id_generate{125};
//////////// SrtTransport //////////////////////////
SrtTransport::SrtTransport(const EventPoller::Ptr &poller)
: _poller(poller) {
_start_timestamp = SteadyClock::now();
_socket_id = s_srt_socket_id_generate.fetch_add(1);\
_pkt_recv_rate_context = std::make_shared<PacketRecvRateContext>(_start_timestamp);
_recv_rate_context = std::make_shared<RecvRateContext>(_start_timestamp);
_estimated_link_capacity_context = std::make_shared<EstimatedLinkCapacityContext>(_start_timestamp);
}
SrtTransport::~SrtTransport(){
TraceL<<" ";
_start_timestamp = SteadyClock::now();
_socket_id = s_srt_socket_id_generate.fetch_add(1);
_pkt_recv_rate_context = std::make_shared<PacketRecvRateContext>(_start_timestamp);
_recv_rate_context = std::make_shared<RecvRateContext>(_start_timestamp);
_estimated_link_capacity_context = std::make_shared<EstimatedLinkCapacityContext>(_start_timestamp);
}
SrtTransport::~SrtTransport() {
TraceL << " ";
}
const EventPoller::Ptr &SrtTransport::getPoller() const {
return _poller;
}
@ -40,24 +41,25 @@ void SrtTransport::setSession(Session::Ptr session) {
}
_selected_session = session;
}
const Session::Ptr &SrtTransport::getSession() const {
return _selected_session;
}
void SrtTransport::switchToOtherTransport(uint8_t *buf, int len,uint32_t socketid, struct sockaddr_storage *addr){
void SrtTransport::switchToOtherTransport(uint8_t *buf, int len, uint32_t socketid, struct sockaddr_storage *addr) {
BufferRaw::Ptr tmp = BufferRaw::create();
struct sockaddr_storage tmp_addr = *addr;
tmp->assign((char*)buf,len);
tmp->assign((char *)buf, len);
auto trans = SrtTransportManager::Instance().getItem(std::to_string(socketid));
if(trans){
trans->getPoller()->async([tmp,tmp_addr,trans]{
trans->inputSockData((uint8_t*)tmp->data(),tmp->size(),(struct sockaddr_storage*)&tmp_addr);
if (trans) {
trans->getPoller()->async([tmp, tmp_addr, trans] {
trans->inputSockData((uint8_t *)tmp->data(), tmp->size(), (struct sockaddr_storage *)&tmp_addr);
});
}
}
void SrtTransport::inputSockData(uint8_t *buf, int len, struct sockaddr_storage *addr) {
using srt_control_handler = void (SrtTransport::*)(uint8_t* buf,int len,struct sockaddr_storage *addr);
using srt_control_handler = void (SrtTransport::*)(uint8_t * buf, int len, struct sockaddr_storage *addr);
static std::unordered_map<uint16_t, srt_control_handler> s_control_functions;
static onceToken token([]() {
s_control_functions.emplace(ControlPacket::HANDSHAKE, &SrtTransport::handleHandshake);
@ -74,23 +76,23 @@ void SrtTransport::inputSockData(uint8_t *buf, int len, struct sockaddr_storage
_now = SteadyClock::now();
// 处理srt数据
if (DataPacket::isDataPacket(buf, len)) {
uint32_t socketId = DataPacket::getSocketID(buf,len);
if(socketId == _socket_id){
uint32_t socketId = DataPacket::getSocketID(buf, len);
if (socketId == _socket_id) {
_pkt_recv_rate_context->inputPacket(_now);
_estimated_link_capacity_context->inputPacket(_now);
_recv_rate_context->inputPacket(_now, len);
handleDataPacket(buf, len, addr);
}else{
switchToOtherTransport(buf,len,socketId,addr);
} else {
switchToOtherTransport(buf, len, socketId, addr);
}
} else {
if (ControlPacket::isControlPacket(buf, len)) {
uint32_t socketId = ControlPacket::getSocketID(buf,len);
uint16_t type = ControlPacket::getControlType(buf,len);
if(type != ControlPacket::HANDSHAKE && socketId != _socket_id && _socket_id != 0){
uint32_t socketId = ControlPacket::getSocketID(buf, len);
uint16_t type = ControlPacket::getControlType(buf, len);
if (type != ControlPacket::HANDSHAKE && socketId != _socket_id && _socket_id != 0) {
// socket id not same
switchToOtherTransport(buf,len,socketId,addr);
switchToOtherTransport(buf, len, socketId, addr);
return;
}
_pkt_recv_rate_context->inputPacket(_now);
@ -99,10 +101,10 @@ void SrtTransport::inputSockData(uint8_t *buf, int len, struct sockaddr_storage
auto it = s_control_functions.find(type);
if (it == s_control_functions.end()) {
WarnL<<" not support type ignore" << ControlPacket::getControlType(buf,len);
WarnL << " not support type ignore" << ControlPacket::getControlType(buf, len);
return;
}else{
(this->*(it->second))(buf,len,addr);
} else {
(this->*(it->second))(buf, len, addr);
}
} else {
// not reach
@ -119,7 +121,7 @@ void SrtTransport::handleHandshakeInduction(HandshakePacket &pkt, struct sockadd
sendControlPacket(_handleshake_res, true);
return;
}
_induction_ts = _now;
_induction_ts = _now;
_start_timestamp = _now;
_init_seq_number = pkt.initial_packet_sequence_number;
_max_window_size = pkt.max_flow_window_size;
@ -146,9 +148,10 @@ void SrtTransport::handleHandshakeInduction(HandshakePacket &pkt, struct sockadd
registerSelfHandshake();
sendControlPacket(res, true);
}
void SrtTransport::handleHandshakeConclusion(HandshakePacket &pkt, struct sockaddr_storage *addr) {
if(!_handleshake_res){
ErrorL<<"must Induction Phase for handleshake ";
if (!_handleshake_res) {
ErrorL << "must Induction Phase for handleshake ";
return;
}
@ -157,21 +160,21 @@ void SrtTransport::handleHandshakeConclusion(HandshakePacket &pkt, struct sockad
HSExtMessage::Ptr req;
HSExtStreamID::Ptr sid;
uint32_t srt_flag = 0xbf;
uint16_t delay = DurationCountMicroseconds(_now - _induction_ts)*getLantencyMul()/1000;
uint16_t delay = DurationCountMicroseconds(_now - _induction_ts) * getLatencyMul() / 1000;
for (auto ext : pkt.ext_list) {
//TraceL << getIdentifier() << " ext " << ext->dump();
// TraceL << getIdentifier() << " ext " << ext->dump();
if (!req) {
req = std::dynamic_pointer_cast<HSExtMessage>(ext);
}
if(!sid){
if (!sid) {
sid = std::dynamic_pointer_cast<HSExtStreamID>(ext);
}
}
if(sid){
if (sid) {
_stream_id = sid->streamid;
}
if(req){
if (req) {
srt_flag = req->srt_flag;
delay = delay <= req->recv_tsbpd_delay ? req->recv_tsbpd_delay : delay;
}
@ -200,167 +203,174 @@ void SrtTransport::handleHandshakeConclusion(HandshakePacket &pkt, struct sockad
unregisterSelfHandshake();
registerSelf();
sendControlPacket(res, true);
TraceL<<" buf size = "<<res->max_flow_window_size<<" init seq ="<<_init_seq_number<<" lantency="<<delay;
_recv_buf = std::make_shared<PacketQueue>(res->max_flow_window_size,_init_seq_number, delay*1e3);
_send_buf = std::make_shared<PacketSendQueue>(res->max_flow_window_size, delay*1e3);
TraceL << " buf size = " << res->max_flow_window_size << " init seq =" << _init_seq_number << " latency=" << delay;
_recv_buf = std::make_shared<PacketQueue>(res->max_flow_window_size, _init_seq_number, delay * 1e3);
_send_buf = std::make_shared<PacketSendQueue>(res->max_flow_window_size, delay * 1e3);
_send_packet_seq_number = _init_seq_number;
_buf_delay = delay;
onHandShakeFinished(_stream_id,addr);
onHandShakeFinished(_stream_id, addr);
} else {
TraceL << getIdentifier() << " CONCLUSION handle repeate ";
sendControlPacket(_handleshake_res, true);
}
_last_ack_pkt_seq_num = _init_seq_number;
}
void SrtTransport::handleHandshake(uint8_t *buf, int len, struct sockaddr_storage *addr){
HandshakePacket pkt;
assert(pkt.loadFromData(buf,len));
if(pkt.handshake_type == HandshakePacket::HS_TYPE_INDUCTION){
handleHandshakeInduction(pkt,addr);
}else if(pkt.handshake_type == HandshakePacket::HS_TYPE_CONCLUSION){
handleHandshakeConclusion(pkt,addr);
}else{
WarnL<<" not support handshake type = "<< pkt.handshake_type;
void SrtTransport::handleHandshake(uint8_t *buf, int len, struct sockaddr_storage *addr) {
HandshakePacket pkt;
assert(pkt.loadFromData(buf, len));
if (pkt.handshake_type == HandshakePacket::HS_TYPE_INDUCTION) {
handleHandshakeInduction(pkt, addr);
} else if (pkt.handshake_type == HandshakePacket::HS_TYPE_CONCLUSION) {
handleHandshakeConclusion(pkt, addr);
} else {
WarnL << " not support handshake type = " << pkt.handshake_type;
}
_ack_ticker.resetTime(_now);
_nak_ticker.resetTime(_now);
}
void SrtTransport::handleKeeplive(uint8_t *buf, int len, struct sockaddr_storage *addr){
//TraceL;
void SrtTransport::handleKeeplive(uint8_t *buf, int len, struct sockaddr_storage *addr) {
// TraceL;
sendKeepLivePacket();
}
void SrtTransport::sendKeepLivePacket(){
void SrtTransport::sendKeepLivePacket() {
KeepLivePacket::Ptr pkt = std::make_shared<KeepLivePacket>();
pkt->dst_socket_id = _peer_socket_id;
pkt->timestamp = DurationCountMicroseconds(_now -_start_timestamp);
pkt->timestamp = DurationCountMicroseconds(_now - _start_timestamp);
pkt->storeToData();
sendControlPacket(pkt,true);
}
void SrtTransport::handleACK(uint8_t *buf, int len, struct sockaddr_storage *addr){
//TraceL;
sendControlPacket(pkt, true);
}
void SrtTransport::handleACK(uint8_t *buf, int len, struct sockaddr_storage *addr) {
// TraceL;
ACKPacket ack;
if(!ack.loadFromData(buf,len)){
if (!ack.loadFromData(buf, len)) {
return;
}
ACKACKPacket::Ptr pkt = std::make_shared<ACKACKPacket>();
pkt->dst_socket_id = _peer_socket_id;
pkt->timestamp = DurationCountMicroseconds(_now -_start_timestamp);
pkt->timestamp = DurationCountMicroseconds(_now - _start_timestamp);
pkt->ack_number = ack.ack_number;
pkt->storeToData();
_send_buf->drop(ack.last_ack_pkt_seq_number);
sendControlPacket(pkt,true);
//TraceL<<"ack number "<<ack.ack_number;
sendControlPacket(pkt, true);
// TraceL<<"ack number "<<ack.ack_number;
}
void SrtTransport::sendMsgDropReq(uint32_t first ,uint32_t last){
void SrtTransport::sendMsgDropReq(uint32_t first, uint32_t last) {
MsgDropReqPacket::Ptr pkt = std::make_shared<MsgDropReqPacket>();
pkt->dst_socket_id = _peer_socket_id;
pkt->timestamp = DurationCountMicroseconds(_now -_start_timestamp);
pkt->timestamp = DurationCountMicroseconds(_now - _start_timestamp);
pkt->first_pkt_seq_num = first;
pkt->last_pkt_seq_num = last;
pkt->storeToData();
sendControlPacket(pkt,true);
sendControlPacket(pkt, true);
}
void SrtTransport::handleNAK(uint8_t *buf, int len, struct sockaddr_storage *addr){
//TraceL;
void SrtTransport::handleNAK(uint8_t *buf, int len, struct sockaddr_storage *addr) {
// TraceL;
NAKPacket pkt;
pkt.loadFromData(buf,len);
pkt.loadFromData(buf, len);
bool empty = false;
bool flush = false;
for(auto it : pkt.lost_list){
if(pkt.lost_list.back() == it){
for (auto it : pkt.lost_list) {
if (pkt.lost_list.back() == it) {
flush = true;
}
empty = true;
auto re_list = _send_buf->findPacketBySeq(it.first,it.second-1);
for(auto pkt : re_list){
auto re_list = _send_buf->findPacketBySeq(it.first, it.second - 1);
for (auto pkt : re_list) {
pkt->R = 1;
pkt->storeToHeader();
sendPacket(pkt,flush);
sendPacket(pkt, flush);
empty = false;
}
if(empty){
sendMsgDropReq(it.first,it.second-1);
if (empty) {
sendMsgDropReq(it.first, it.second - 1);
}
}
}
void SrtTransport::handleCongestionWarning(uint8_t *buf, int len, struct sockaddr_storage *addr){
void SrtTransport::handleCongestionWarning(uint8_t *buf, int len, struct sockaddr_storage *addr) {
TraceL;
}
void SrtTransport::handleShutDown(uint8_t *buf, int len, struct sockaddr_storage *addr){
void SrtTransport::handleShutDown(uint8_t *buf, int len, struct sockaddr_storage *addr) {
TraceL;
onShutdown(SockException(Err_shutdown, "peer close connection"));
}
void SrtTransport::handleDropReq(uint8_t *buf, int len, struct sockaddr_storage *addr){
void SrtTransport::handleDropReq(uint8_t *buf, int len, struct sockaddr_storage *addr) {
MsgDropReqPacket pkt;
pkt.loadFromData(buf,len);
pkt.loadFromData(buf, len);
std::list<DataPacket::Ptr> list;
//TraceL<<"drop "<<pkt.first_pkt_seq_num<<" last "<<pkt.last_pkt_seq_num;
_recv_buf->drop(pkt.first_pkt_seq_num,pkt.last_pkt_seq_num,list);
if(list.empty()){
// TraceL<<"drop "<<pkt.first_pkt_seq_num<<" last "<<pkt.last_pkt_seq_num;
_recv_buf->drop(pkt.first_pkt_seq_num, pkt.last_pkt_seq_num, list);
if (list.empty()) {
return;
}
for(auto data : list){
for (auto data : list) {
onSRTData(std::move(data));
}
auto nak_interval = (_rtt+_rtt_variance*4)/2;
if(nak_interval <= 20*1000){
nak_interval = 20*1000;
auto nak_interval = (_rtt + _rtt_variance * 4) / 2;
if (nak_interval <= 20 * 1000) {
nak_interval = 20 * 1000;
}
if(_nak_ticker.elapsedTime(_now)>nak_interval){
if (_nak_ticker.elapsedTime(_now) > nak_interval) {
auto lost = _recv_buf->getLostSeq();
if(!lost.empty()){
sendNAKPacket(lost);
if (!lost.empty()) {
sendNAKPacket(lost);
}
_nak_ticker.resetTime(_now);
}
if(_ack_ticker.elapsedTime(_now)>10*1000){
if (_ack_ticker.elapsedTime(_now) > 10 * 1000) {
_light_ack_pkt_count = 0;
_ack_ticker.resetTime(_now);
// send a ack per 10 ms for receiver
// send a ack per 10 ms for receiver
sendACKPacket();
}else{
if(_light_ack_pkt_count >= 64){
} else {
if (_light_ack_pkt_count >= 64) {
// for high bitrate stream send light ack
// TODO
// TODO
sendLightACKPacket();
TraceL<<"send light ack";
TraceL << "send light ack";
}
_light_ack_pkt_count = 0;
}
_light_ack_pkt_count++;
}
void SrtTransport::handleUserDefinedType(uint8_t *buf, int len, struct sockaddr_storage *addr){
void SrtTransport::handleUserDefinedType(uint8_t *buf, int len, struct sockaddr_storage *addr) {
TraceL;
}
void SrtTransport::handleACKACK(uint8_t *buf, int len, struct sockaddr_storage *addr){
//TraceL;
void SrtTransport::handleACKACK(uint8_t *buf, int len, struct sockaddr_storage *addr) {
// TraceL;
ACKACKPacket::Ptr pkt = std::make_shared<ACKACKPacket>();
pkt->loadFromData(buf,len);
pkt->loadFromData(buf, len);
uint32_t rtt = DurationCountMicroseconds(_now - _ack_send_timestamp[pkt->ack_number]);
_rtt_variance = (3*_rtt_variance+abs((long)_rtt - (long)rtt))/4;
_rtt = (7*rtt+_rtt)/8;
_rtt_variance = (3 * _rtt_variance + abs((long)_rtt - (long)rtt)) / 4;
_rtt = (7 * rtt + _rtt) / 8;
//TraceL<<" rtt:"<<_rtt<<" rtt variance:"<<_rtt_variance;
// TraceL<<" rtt:"<<_rtt<<" rtt variance:"<<_rtt_variance;
_ack_send_timestamp.erase(pkt->ack_number);
}
void SrtTransport::handlePeerError(uint8_t *buf, int len, struct sockaddr_storage *addr){
void SrtTransport::handlePeerError(uint8_t *buf, int len, struct sockaddr_storage *addr) {
TraceL;
}
void SrtTransport::sendACKPacket() {
ACKPacket::Ptr pkt=std::make_shared<ACKPacket>();
ACKPacket::Ptr pkt = std::make_shared<ACKPacket>();
pkt->dst_socket_id = _peer_socket_id;
pkt->timestamp = DurationCountMicroseconds(_now - _start_timestamp);
pkt->ack_number = ++_ack_number_count;
@ -373,13 +383,14 @@ void SrtTransport::sendACKPacket() {
pkt->recv_rate = _recv_rate_context->getRecvRate();
pkt->storeToData();
_ack_send_timestamp[pkt->ack_number] = _now;
_last_ack_pkt_seq_num = pkt->last_ack_pkt_seq_number;
sendControlPacket(pkt,true);
//TraceL<<"send ack "<<pkt->dump();
_last_ack_pkt_seq_num = pkt->last_ack_pkt_seq_number;
sendControlPacket(pkt, true);
// TraceL<<"send ack "<<pkt->dump();
}
void SrtTransport::sendLightACKPacket() {
ACKPacket::Ptr pkt=std::make_shared<ACKPacket>();
ACKPacket::Ptr pkt = std::make_shared<ACKPacket>();
pkt->dst_socket_id = _peer_socket_id;
pkt->timestamp = DurationCountMicroseconds(_now - _start_timestamp);
pkt->ack_number = 0;
@ -392,11 +403,11 @@ void SrtTransport::sendLightACKPacket() {
pkt->recv_rate = 0;
pkt->storeToData();
_last_ack_pkt_seq_num = pkt->last_ack_pkt_seq_number;
sendControlPacket(pkt,true);
TraceL<<"send ack "<<pkt->dump();
sendControlPacket(pkt, true);
TraceL << "send ack " << pkt->dump();
}
void SrtTransport::sendNAKPacket(std::list<PacketQueue::LostPair>& lost_list){
void SrtTransport::sendNAKPacket(std::list<PacketQueue::LostPair> &lost_list) {
NAKPacket::Ptr pkt = std::make_shared<NAKPacket>();
pkt->dst_socket_id = _peer_socket_id;
@ -405,112 +416,118 @@ void SrtTransport::sendNAKPacket(std::list<PacketQueue::LostPair>& lost_list){
pkt->storeToData();
//TraceL<<"send NAK "<<pkt->dump();
sendControlPacket(pkt,true);
// TraceL<<"send NAK "<<pkt->dump();
sendControlPacket(pkt, true);
}
void SrtTransport::sendShutDown(){
void SrtTransport::sendShutDown() {
ShutDownPacket::Ptr pkt = std::make_shared<ShutDownPacket>();
pkt->dst_socket_id = _peer_socket_id;
pkt->timestamp = DurationCountMicroseconds(_now - _start_timestamp);
pkt->storeToData();
sendControlPacket(pkt,true);
sendControlPacket(pkt, true);
}
void SrtTransport::handleDataPacket(uint8_t *buf, int len, struct sockaddr_storage *addr){
void SrtTransport::handleDataPacket(uint8_t *buf, int len, struct sockaddr_storage *addr) {
DataPacket::Ptr pkt = std::make_shared<DataPacket>();
pkt->loadFromData(buf,len);
pkt->loadFromData(buf, len);
pkt->get_ts = _now;
std::list<DataPacket::Ptr> list;
//TraceL<<" seq="<< pkt->packet_seq_number<<" ts="<<pkt->timestamp<<" size="<<pkt->payloadSize()<<\
//" PP="<<(int)pkt->PP<<" O="<<(int)pkt->O<<" kK="<<(int)pkt->KK<<" R="<<(int)pkt->R;
_recv_buf->inputPacket(pkt,list);
for(auto data : list){
_recv_buf->inputPacket(pkt, list);
for (auto data : list) {
onSRTData(std::move(data));
}
auto nak_interval = (_rtt+_rtt_variance*4)/2;
if(nak_interval <= 20*1000){
nak_interval = 20*1000;
auto nak_interval = (_rtt + _rtt_variance * 4) / 2;
if (nak_interval <= 20 * 1000) {
nak_interval = 20 * 1000;
}
if(list.empty()){
//TraceL<<_recv_buf->dump()<<" nake interval:"<<nak_interval/1000<<" ticker:"<<_nak_ticker.elapsedTime(_now)/1000;
if (list.empty()) {
// TraceL<<_recv_buf->dump()<<" nake interval:"<<nak_interval/1000<<"
// ticker:"<<_nak_ticker.elapsedTime(_now)/1000;
}
if(_nak_ticker.elapsedTime(_now)>nak_interval){
if (_nak_ticker.elapsedTime(_now) > nak_interval) {
auto lost = _recv_buf->getLostSeq();
if(!lost.empty()){
sendNAKPacket(lost);
//TraceL<<"send NAK";
}else{
//TraceL<<"lost is empty";
if (!lost.empty()) {
sendNAKPacket(lost);
// TraceL<<"send NAK";
} else {
// TraceL<<"lost is empty";
}
_nak_ticker.resetTime(_now);
}
if(_ack_ticker.elapsedTime(_now)>10*1000){
if (_ack_ticker.elapsedTime(_now) > 10 * 1000) {
_light_ack_pkt_count = 0;
_ack_ticker.resetTime(_now);
// send a ack per 10 ms for receiver
// send a ack per 10 ms for receiver
sendACKPacket();
}else{
if(_light_ack_pkt_count >= 64){
} else {
if (_light_ack_pkt_count >= 64) {
// for high bitrate stream send light ack
// TODO
// TODO
sendLightACKPacket();
TraceL<<"send light ack";
TraceL << "send light ack";
}
_light_ack_pkt_count = 0;
}
_light_ack_pkt_count++;
//bufCheckInterval();
// bufCheckInterval();
}
void SrtTransport::sendDataPacket(DataPacket::Ptr pkt,char* buf,int len, bool flush) {
pkt->storeToData((uint8_t*)buf,len);
sendPacket(pkt,flush);
void SrtTransport::sendDataPacket(DataPacket::Ptr pkt, char *buf, int len, bool flush) {
pkt->storeToData((uint8_t *)buf, len);
sendPacket(pkt, flush);
_send_buf->inputPacket(pkt);
}
void SrtTransport::sendControlPacket(ControlPacket::Ptr pkt, bool flush) {
sendPacket(pkt,flush);
void SrtTransport::sendControlPacket(ControlPacket::Ptr pkt, bool flush) {
sendPacket(pkt, flush);
}
void SrtTransport::sendPacket(Buffer::Ptr pkt,bool flush){
if(_selected_session){
auto tmp = _packet_pool.obtain2();
tmp->assign(pkt->data(),pkt->size());
_selected_session->setSendFlushFlag(flush);
_selected_session->send(std::move(tmp));
}else{
WarnL<<"not reach this";
void SrtTransport::sendPacket(Buffer::Ptr pkt, bool flush) {
if (_selected_session) {
auto tmp = _packet_pool.obtain2();
tmp->assign(pkt->data(), pkt->size());
_selected_session->setSendFlushFlag(flush);
_selected_session->send(std::move(tmp));
} else {
WarnL << "not reach this";
}
}
std::string SrtTransport::getIdentifier(){
std::string SrtTransport::getIdentifier() {
return _selected_session ? _selected_session->getIdentifier() : "";
}
void SrtTransport::registerSelfHandshake() {
SrtTransportManager::Instance().addHandshakeItem(std::to_string(_sync_cookie),shared_from_this());
void SrtTransport::registerSelfHandshake() {
SrtTransportManager::Instance().addHandshakeItem(std::to_string(_sync_cookie), shared_from_this());
}
void SrtTransport::unregisterSelfHandshake() {
if(_sync_cookie == 0){
void SrtTransport::unregisterSelfHandshake() {
if (_sync_cookie == 0) {
return;
}
SrtTransportManager::Instance().removeHandshakeItem(std::to_string(_sync_cookie));
}
void SrtTransport::registerSelf() {
if(_socket_id == 0){
if (_socket_id == 0) {
return;
}
SrtTransportManager::Instance().addItem(std::to_string(_socket_id),shared_from_this());
SrtTransportManager::Instance().addItem(std::to_string(_socket_id), shared_from_this());
}
void SrtTransport::unregisterSelf() {
void SrtTransport::unregisterSelf() {
SrtTransportManager::Instance().removeItem(std::to_string(_socket_id));
}
void SrtTransport::onShutdown(const SockException &ex){
void SrtTransport::onShutdown(const SockException &ex) {
sendShutDown();
WarnL << ex.what();
unregisterSelfHandshake();
@ -522,23 +539,25 @@ void SrtTransport::onShutdown(const SockException &ex){
}
}
}
size_t SrtTransport::getPayloadSize(){
size_t ret = (_mtu - 28 -16)/188*188;
size_t SrtTransport::getPayloadSize() {
size_t ret = (_mtu - 28 - 16) / 188 * 188;
return ret;
}
void SrtTransport::onSendTSData(const Buffer::Ptr &buffer, bool flush){
//TraceL;
void SrtTransport::onSendTSData(const Buffer::Ptr &buffer, bool flush) {
// TraceL;
DataPacket::Ptr pkt;
size_t payloadSize = getPayloadSize();
size_t size = buffer->size();
char* ptr = buffer->data();
char* end = buffer->data()+size;
size_t size = buffer->size();
char *ptr = buffer->data();
char *end = buffer->data() + size;
while(ptr < end && size >=payloadSize){
while (ptr < end && size >= payloadSize) {
pkt = std::make_shared<DataPacket>();
pkt->f = 0;
pkt->packet_seq_number = _send_packet_seq_number&0x7fffffff;
_send_packet_seq_number = (_send_packet_seq_number+1)&0x7fffffff;
pkt->packet_seq_number = _send_packet_seq_number & 0x7fffffff;
_send_packet_seq_number = (_send_packet_seq_number + 1) & 0x7fffffff;
pkt->PP = 3;
pkt->O = 0;
pkt->KK = 0;
@ -546,16 +565,16 @@ void SrtTransport::onSendTSData(const Buffer::Ptr &buffer, bool flush){
pkt->msg_number = _send_msg_number++;
pkt->dst_socket_id = _peer_socket_id;
pkt->timestamp = DurationCountMicroseconds(SteadyClock::now() - _start_timestamp);
sendDataPacket(pkt,ptr,(int)payloadSize,flush);
sendDataPacket(pkt, ptr, (int)payloadSize, flush);
ptr += payloadSize;
size -= payloadSize;
}
if(size >0 && ptr <end){
if (size > 0 && ptr < end) {
pkt = std::make_shared<DataPacket>();
pkt->f = 0;
pkt->packet_seq_number = _send_packet_seq_number&0x7fffffff;
_send_packet_seq_number = (_send_packet_seq_number+1)&0x7fffffff;
pkt->packet_seq_number = _send_packet_seq_number & 0x7fffffff;
_send_packet_seq_number = (_send_packet_seq_number + 1) & 0x7fffffff;
pkt->PP = 3;
pkt->O = 0;
pkt->KK = 0;
@ -563,11 +582,12 @@ void SrtTransport::onSendTSData(const Buffer::Ptr &buffer, bool flush){
pkt->msg_number = _send_msg_number++;
pkt->dst_socket_id = _peer_socket_id;
pkt->timestamp = DurationCountMicroseconds(SteadyClock::now() - _start_timestamp);
sendDataPacket(pkt,ptr,(int)size,flush);
sendDataPacket(pkt, ptr, (int)size, flush);
}
}
//////////// SrtTransportManager //////////////////////////
SrtTransportManager &SrtTransportManager::Instance() {
static SrtTransportManager s_instance;
return s_instance;
@ -599,10 +619,12 @@ void SrtTransportManager::addHandshakeItem(const std::string &key, const SrtTran
std::lock_guard<std::mutex> lck(_handshake_mtx);
_handshake_map[key] = ptr;
}
void SrtTransportManager::removeHandshakeItem(const std::string &key) {
std::lock_guard<std::mutex> lck(_handshake_mtx);
std::lock_guard<std::mutex> lck(_handshake_mtx);
_handshake_map.erase(key);
}
SrtTransport::Ptr SrtTransportManager::getHandshakeItem(const std::string &key) {
if (key.empty()) {
return nullptr;
@ -615,5 +637,4 @@ SrtTransport::Ptr SrtTransportManager::getHandshakeItem(const std::string &key)
return it->second.lock();
}
} // namespace SRT

58
srt/SrtTransport.hpp
View File

@ -1,10 +1,10 @@
#ifndef ZLMEDIAKIT_SRT_TRANSPORT_H
#define ZLMEDIAKIT_SRT_TRANSPORT_H
#include <mutex>
#include <atomic>
#include <chrono>
#include <memory>
#include <atomic>
#include <mutex>
#include "Network/Session.h"
#include "Poller/EventPoller.h"
@ -17,11 +17,12 @@
#include "Statistic.hpp"
namespace SRT {
using namespace toolkit;
extern const std::string kPort;
extern const std::string kTimeOutSec;
extern const std::string kLantencyMul;
extern const std::string kLatencyMul;
class SrtTransport : public std::enable_shared_from_this<SrtTransport> {
public:
@ -33,6 +34,7 @@ public:
const EventPoller::Ptr &getPoller() const;
void setSession(Session::Ptr session);
const Session::Ptr &getSession() const;
/**
* socket收到udp数据
* @param buf 数据指针
@ -43,26 +45,26 @@ public:
virtual void onSendTSData(const Buffer::Ptr &buffer, bool flush);
std::string getIdentifier();
void unregisterSelfHandshake();
void unregisterSelf();
void unregisterSelfHandshake();
protected:
virtual void onHandShakeFinished(std::string& streamid,struct sockaddr_storage *addr){};
virtual void onSRTData(DataPacket::Ptr pkt){};
virtual bool isPusher() { return true; };
virtual void onSRTData(DataPacket::Ptr pkt) {};
virtual void onShutdown(const SockException &ex);
virtual bool isPusher(){
return true;
};
virtual void onHandShakeFinished(std::string &streamid, struct sockaddr_storage *addr) {};
virtual void sendPacket(Buffer::Ptr pkt, bool flush = true);
virtual int getLatencyMul() { return 4; };
private:
void registerSelfHandshake();
void registerSelf();
void registerSelfHandshake();
void switchToOtherTransport(uint8_t *buf, int len,uint32_t socketid, struct sockaddr_storage *addr);
void switchToOtherTransport(uint8_t *buf, int len, uint32_t socketid, struct sockaddr_storage *addr);
void handleHandshake(uint8_t *buf, int len, struct sockaddr_storage *addr);
void handleHandshakeInduction(HandshakePacket& pkt,struct sockaddr_storage *addr);
void handleHandshakeConclusion(HandshakePacket& pkt,struct sockaddr_storage *addr);
void handleHandshakeInduction(HandshakePacket &pkt, struct sockaddr_storage *addr);
void handleHandshakeConclusion(HandshakePacket &pkt, struct sockaddr_storage *addr);
void handleKeeplive(uint8_t *buf, int len, struct sockaddr_storage *addr);
void handleACK(uint8_t *buf, int len, struct sockaddr_storage *addr);
@ -74,27 +76,25 @@ private:
void handleUserDefinedType(uint8_t *buf, int len, struct sockaddr_storage *addr);
void handlePeerError(uint8_t *buf, int len, struct sockaddr_storage *addr);
void handleDataPacket(uint8_t *buf, int len, struct sockaddr_storage *addr);
void sendNAKPacket(std::list<PacketQueue::LostPair>& lost_list);
void sendNAKPacket(std::list<PacketQueue::LostPair> &lost_list);
void sendACKPacket();
void sendLightACKPacket();
void sendKeepLivePacket();
void sendShutDown();
void sendMsgDropReq(uint32_t first ,uint32_t last);
void sendMsgDropReq(uint32_t first, uint32_t last);
size_t getPayloadSize();
protected:
void sendDataPacket(DataPacket::Ptr pkt,char* buf,int len,bool flush = false);
void sendControlPacket(ControlPacket::Ptr pkt,bool flush = true);
virtual void sendPacket(Buffer::Ptr pkt,bool flush = true);
virtual int getLantencyMul(){
return 4;
};
void sendDataPacket(DataPacket::Ptr pkt, char *buf, int len, bool flush = false);
void sendControlPacket(ControlPacket::Ptr pkt, bool flush = true);
private:
//当前选中的udp链接
Session::Ptr _selected_session;
//链接迁移前后使用过的udp链接
std::unordered_map<Session *, std::weak_ptr<Session> > _history_sessions;
std::unordered_map<Session *, std::weak_ptr<Session>> _history_sessions;
EventPoller::Ptr _poller;
@ -109,7 +109,7 @@ private:
uint32_t _mtu = 1500;
uint32_t _max_window_size = 8192;
uint32_t _init_seq_number = 0;
uint32_t _init_seq_number = 0;
std::string _stream_id;
uint32_t _sync_cookie = 0;
@ -119,13 +119,13 @@ private:
PacketSendQueue::Ptr _send_buf;
uint32_t _buf_delay = 120;
PacketQueue::Ptr _recv_buf;
uint32_t _rtt = 100*1000;
uint32_t _rtt_variance =50*1000;
uint32_t _rtt = 100 * 1000;
uint32_t _rtt_variance = 50 * 1000;
uint32_t _light_ack_pkt_count = 0;
uint32_t _ack_number_count = 0;
uint32_t _last_ack_pkt_seq_num = 0;
UTicker _ack_ticker;
std::map<uint32_t,TimePoint> _ack_send_timestamp;
std::map<uint32_t, TimePoint> _ack_send_timestamp;
std::shared_ptr<PacketRecvRateContext> _pkt_recv_rate_context;
std::shared_ptr<EstimatedLinkCapacityContext> _estimated_link_capacity_context;
@ -137,7 +137,6 @@ private:
HandshakePacket::Ptr _handleshake_res;
ResourcePool<BufferRaw> _packet_pool;
};
class SrtTransportManager {
@ -150,6 +149,7 @@ public:
void addHandshakeItem(const std::string &key, const SrtTransport::Ptr &ptr);
void removeHandshakeItem(const std::string &key);
SrtTransport::Ptr getHandshakeItem(const std::string &key);
private:
SrtTransportManager() = default;

114
srt/SrtTransportImp.cpp
View File

@ -4,8 +4,7 @@
#include "SrtTransportImp.hpp"
namespace SRT {
SrtTransportImp::SrtTransportImp(const EventPoller::Ptr &poller)
: SrtTransport(poller) {}
SrtTransportImp::SrtTransportImp(const EventPoller::Ptr &poller) : SrtTransport(poller) {}
SrtTransportImp::~SrtTransportImp() {
InfoP(this);
@ -23,52 +22,56 @@ SrtTransportImp::~SrtTransportImp() {
}
}
void SrtTransportImp::onHandShakeFinished(std::string &streamid,struct sockaddr_storage *addr) {
// TODO parse streamid like this zlmediakit.com/live/test?token=1213444&type=push
if(!_addr){
void SrtTransportImp::onHandShakeFinished(std::string &streamid, struct sockaddr_storage *addr) {
// TODO parse stream id like this zlmediakit.com/live/test?token=1213444&type=push
if (!_addr) {
_addr.reset(new sockaddr_storage(*((sockaddr_storage *)addr)));
}
_is_pusher = false;
TraceL<<" stream id "<<streamid;
if(streamid.empty()){
onShutdown(SockException(Err_shutdown, "streamid not empty"));
return;
_is_pusher = false;
TraceL << " stream id " << streamid;
if (streamid.empty()) {
onShutdown(SockException(Err_shutdown, "stream id not empty"));
return;
}
_media_info.parse("srt://"+streamid);
_media_info.parse("srt://" + streamid);
auto params = Parser::parseArgs(_media_info._param_strs);
if(params["type"] == "push"){
if (params["type"] == "push") {
_is_pusher = true;
_decoder = DecoderImp::createDecoder(DecoderImp::decoder_ts, this);
emitOnPublish();
}else{
} else {
_is_pusher = false;
emitOnPlay();
}
}
void SrtTransportImp::onSRTData(DataPacket::Ptr pkt) {
if(!_is_pusher){
WarnP(this)<<"this is a player data ignore";
if (!_is_pusher) {
WarnP(this) << "this is a player data ignore";
return;
}
if (_decoder) {
_decoder->input(reinterpret_cast<const uint8_t *>(pkt->payloadData()), pkt->payloadSize());
}else{
WarnP(this)<<" not reach this";
} else {
WarnP(this) << " not reach this";
}
}
void SrtTransportImp::onShutdown(const SockException &ex) {
SrtTransport::onShutdown(ex);
}
bool SrtTransportImp::close(mediakit::MediaSource &sender, bool force){
if (!force && totalReaderCount(sender)) {
bool SrtTransportImp::close(mediakit::MediaSource &sender, bool force) {
if (!force && totalReaderCount(sender)) {
return false;
}
std::string err = StrPrinter << "close media:" << sender.getSchema() << "/" << sender.getVhost() << "/"
<< sender.getApp() << "/" << sender.getId() << " " << force;
std::string err = StrPrinter << "close media:" << sender.getSchema() << "/"
<< sender.getVhost() << "/"
<< sender.getApp() << "/"
<< sender.getId() << " " << force;
weak_ptr<SrtTransportImp> weak_self = static_pointer_cast<SrtTransportImp>(shared_from_this());
getPoller()->async([weak_self, err]() {
auto strong_self = weak_self.lock();
@ -80,21 +83,25 @@ bool SrtTransportImp::close(mediakit::MediaSource &sender, bool force){
});
return true;
}
// 播放总人数
int SrtTransportImp::totalReaderCount(mediakit::MediaSource &sender){
int SrtTransportImp::totalReaderCount(mediakit::MediaSource &sender) {
return _muxer ? _muxer->totalReaderCount() : sender.readerCount();
}
// 获取媒体源类型
mediakit::MediaOriginType SrtTransportImp::getOriginType(mediakit::MediaSource &sender) const{
mediakit::MediaOriginType SrtTransportImp::getOriginType(mediakit::MediaSource &sender) const {
return MediaOriginType::srt_push;
}
// 获取媒体源url或者文件路径
std::string SrtTransportImp::getOriginUrl(mediakit::MediaSource &sender) const{
std::string SrtTransportImp::getOriginUrl(mediakit::MediaSource &sender) const {
return _media_info._full_url;
}
// 获取媒体源客户端相关信息
std::shared_ptr<SockInfo> SrtTransportImp::getOriginSock(mediakit::MediaSource &sender) const{
return static_pointer_cast<SockInfo>(getSession());
std::shared_ptr<SockInfo> SrtTransportImp::getOriginSock(mediakit::MediaSource &sender) const {
return static_pointer_cast<SockInfo>(getSession());
}
void SrtTransportImp::emitOnPublish() {
@ -114,7 +121,7 @@ void SrtTransportImp::emitOnPublish() {
InfoP(strong_self) << "允许 srt 推流";
} else {
WarnP(strong_self) << "禁止 srt 推流:" << err;
strong_self->onShutdown(SockException(Err_refused,err));
strong_self->onShutdown(SockException(Err_refused, err));
}
};
@ -126,47 +133,46 @@ void SrtTransportImp::emitOnPublish() {
}
}
void SrtTransportImp::emitOnPlay(){
void SrtTransportImp::emitOnPlay() {
std::weak_ptr<SrtTransportImp> weak_self = static_pointer_cast<SrtTransportImp>(shared_from_this());
Broadcast::AuthInvoker invoker = [weak_self](const string &err){
Broadcast::AuthInvoker invoker = [weak_self](const string &err) {
auto strong_self = weak_self.lock();
if (!strong_self) {
return;
}
strong_self->getPoller()->async([strong_self,err]{
if(err != ""){
strong_self->onShutdown(SockException(Err_refused,err));
}else{
strong_self->getPoller()->async([strong_self, err] {
if (err != "") {
strong_self->onShutdown(SockException(Err_refused, err));
} else {
strong_self->doPlay();
}
});
};
auto flag = NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaPlayed, _media_info, invoker, static_cast<SockInfo &>(*this));
if(!flag){
if (!flag) {
doPlay();
}
}
void SrtTransportImp::doPlay(){
//异步查找直播流
std::weak_ptr<SrtTransportImp> weak_self = static_pointer_cast<SrtTransportImp>(shared_from_this());
void SrtTransportImp::doPlay() {
//异步查找直播流
MediaInfo info = _media_info;
info._schema = TS_SCHEMA;
std::weak_ptr<SrtTransportImp> weak_self = static_pointer_cast<SrtTransportImp>(shared_from_this());
MediaSource::findAsync(info, getSession(), [weak_self](const MediaSource::Ptr &src) {
auto strong_self = weak_self.lock();
if (!strong_self) {
//本对象已经销毁
TraceL<<"本对象已经销毁";
TraceL << "本对象已经销毁";
return;
}
if (!src) {
//未找到该流
TraceL<<"未找到该流";
TraceL << "未找到该流";
strong_self->onShutdown(SockException(Err_shutdown));
} else {
TraceL<<"找到该流";
TraceL << "找到该流";
auto ts_src = dynamic_pointer_cast<TSMediaSource>(src);
assert(ts_src);
ts_src->pause(false);
@ -189,9 +195,10 @@ void SrtTransportImp::doPlay(){
auto size = ts_list->size();
ts_list->for_each([&](const TSPacket::Ptr &ts) { strong_self->onSendTSData(ts, ++i == size); });
});
};
}
});
}
std::string SrtTransportImp::get_peer_ip() {
if (!_addr) {
return "::";
@ -215,7 +222,7 @@ std::string SrtTransportImp::get_local_ip() {
}
uint16_t SrtTransportImp::get_local_port() {
auto s = getSession();
auto s = getSession();
if (s) {
return s->get_local_port();
}
@ -236,9 +243,7 @@ bool SrtTransportImp::inputFrame(const Frame::Ptr &frame) {
}
auto frame_cached = Frame::getCacheAbleFrame(frame);
lock_guard<recursive_mutex> lck(_func_mtx);
_cached_func.emplace_back([this, frame_cached]() {
_muxer->inputFrame(frame_cached);
});
_cached_func.emplace_back([this, frame_cached]() { _muxer->inputFrame(frame_cached); });
return true;
}
@ -248,9 +253,7 @@ bool SrtTransportImp::addTrack(const Track::Ptr &track) {
}
lock_guard<recursive_mutex> lck(_func_mtx);
_cached_func.emplace_back([this, track]() {
_muxer->addTrack(track);
});
_cached_func.emplace_back([this, track]() { _muxer->addTrack(track); });
return true;
}
@ -259,9 +262,7 @@ void SrtTransportImp::addTrackCompleted() {
_muxer->addTrackCompleted();
} else {
lock_guard<recursive_mutex> lck(_func_mtx);
_cached_func.emplace_back([this]() {
_muxer->addTrackCompleted();
});
_cached_func.emplace_back([this]() { _muxer->addTrackCompleted(); });
}
}
@ -273,10 +274,9 @@ void SrtTransportImp::doCachedFunc() {
_cached_func.clear();
}
int SrtTransportImp::getLantencyMul(){
GET_CONFIG(int, lantencyMul, kLantencyMul);
return lantencyMul;
int SrtTransportImp::getLatencyMul() {
GET_CONFIG(int, latencyMul, kLatencyMul);
return latencyMul;
}
} // namespace SRT

55
srt/SrtTransportImp.hpp
View File

@ -1,16 +1,18 @@
#ifndef ZLMEDIAKIT_SRT_TRANSPORT_IMP_H
#define ZLMEDIAKIT_SRT_TRANSPORT_IMP_H
#include <mutex>
#include "Common/MultiMediaSourceMuxer.h"
#include "Rtp/Decoder.h"
#include "TS/TSMediaSource.h"
#include "SrtTransport.hpp"
#include <mutex>
#include "Rtp/Decoder.h"
#include "SrtTransport.hpp"
#include "TS/TSMediaSource.h"
#include "Common/MultiMediaSourceMuxer.h"
namespace SRT {
using namespace toolkit;
using namespace mediakit;
using namespace std;
using namespace std;
using namespace toolkit;
using namespace mediakit;
class SrtTransportImp
: public SrtTransport
, public toolkit::SockInfo
@ -19,13 +21,13 @@ class SrtTransportImp
public:
SrtTransportImp(const EventPoller::Ptr &poller);
~SrtTransportImp();
void inputSockData(uint8_t *buf, int len, struct sockaddr_storage *addr){
SrtTransport::inputSockData(buf,len,addr);
void inputSockData(uint8_t *buf, int len, struct sockaddr_storage *addr) override {
SrtTransport::inputSockData(buf, len, addr);
_total_bytes += len;
}
void onSendTSData(const Buffer::Ptr &buffer, bool flush){
SrtTransport::onSendTSData(buffer,flush);
}
void onSendTSData(const Buffer::Ptr &buffer, bool flush) override { SrtTransport::onSendTSData(buffer, flush); }
/// SockInfo override
std::string get_local_ip() override;
uint16_t get_local_port() override;
@ -35,20 +37,18 @@ public:
protected:
///////SrtTransport override///////
void onHandShakeFinished(std::string& streamid,struct sockaddr_storage *addr) override;
int getLatencyMul() override;
void onSRTData(DataPacket::Ptr pkt) override;
void onShutdown(const SockException &ex) override;
int getLantencyMul() override;
void onHandShakeFinished(std::string &streamid, struct sockaddr_storage *addr) override;
void sendPacket(Buffer::Ptr pkt,bool flush = true) override{
void sendPacket(Buffer::Ptr pkt, bool flush = true) override {
_total_bytes += pkt->size();
SrtTransport::sendPacket(pkt,flush);
};
bool isPusher() override{
return _is_pusher;
SrtTransport::sendPacket(pkt, flush);
}
bool isPusher() override { return _is_pusher; }
///////MediaSourceEvent override///////
// 关闭
bool close(mediakit::MediaSource &sender, bool force) override;
@ -61,10 +61,11 @@ protected:
// 获取媒体源客户端相关信息
std::shared_ptr<SockInfo> getOriginSock(mediakit::MediaSource &sender) const override;
bool inputFrame(const Frame::Ptr &frame) override;
bool addTrack(const Track::Ptr & track) override;
void addTrackCompleted() override;
///////MediaSinkInterface override///////
void resetTracks() override {};
void addTrackCompleted() override;
bool addTrack(const Track::Ptr &track) override;
bool inputFrame(const Frame::Ptr &frame) override;
private:
void emitOnPublish();
@ -76,12 +77,12 @@ private:
private:
bool _is_pusher = true;
MediaInfo _media_info;
uint64_t _total_bytes = 0;
uint64_t _total_bytes = 0;
Ticker _alive_ticker;
std::unique_ptr<sockaddr_storage> _addr;
// for player
// for player
TSMediaSource::RingType::RingReader::Ptr _ts_reader;
// for pusher
// for pusher
MultiMediaSourceMuxer::Ptr _muxer;
DecoderImp::Ptr _decoder;
std::recursive_mutex _func_mtx;

86
srt/Statistic.cpp
View File

@ -1,14 +1,17 @@
#include <algorithm>
#include "Statistic.hpp"
namespace SRT {
void PacketRecvRateContext::inputPacket(TimePoint& ts) {
if(_pkt_map.size()>100){
_pkt_map.erase(_pkt_map.begin());
}
auto tmp = DurationCountMicroseconds(ts - _start);
_pkt_map.emplace(tmp,tmp);
void PacketRecvRateContext::inputPacket(TimePoint &ts) {
if (_pkt_map.size() > 100) {
_pkt_map.erase(_pkt_map.begin());
}
auto tmp = DurationCountMicroseconds(ts - _start);
_pkt_map.emplace(tmp, tmp);
}
uint32_t PacketRecvRateContext::getPacketRecvRate() {
if (_pkt_map.size() < 2) {
return 50000;
@ -17,79 +20,78 @@ uint32_t PacketRecvRateContext::getPacketRecvRate() {
for (auto it = _pkt_map.begin(); it != _pkt_map.end(); ++it) {
auto next = it;
++next;
if (next != _pkt_map.end()) {
if ((next->first - it->first) < dur) {
dur = next->first - it->first;
}
} else {
if (next == _pkt_map.end()) {
break;
}
if ((next->first - it->first) < dur) {
dur = next->first - it->first;
}
}
double rate = 1e6 / (double)dur;
if(rate <=1000){
if (rate <= 1000) {
return 50000;
}
return rate;
}
void EstimatedLinkCapacityContext::inputPacket(TimePoint& ts) {
void EstimatedLinkCapacityContext::inputPacket(TimePoint &ts) {
if (_pkt_map.size() > 16) {
_pkt_map.erase(_pkt_map.begin());
}
auto tmp = DurationCountMicroseconds(ts - _start);
_pkt_map.emplace(tmp, tmp);
}
uint32_t EstimatedLinkCapacityContext::getEstimatedLinkCapacity() {
decltype(_pkt_map.begin()) next;
std::vector<int64_t> tmp;
decltype(_pkt_map.begin()) next;
std::vector<int64_t> tmp;
for(auto it = _pkt_map.begin();it != _pkt_map.end();++it){
next = it;
++next;
if(next != _pkt_map.end()){
tmp.push_back(next->first -it->first);
}else{
break;
}
}
std::sort(tmp.begin(),tmp.end());
if(tmp.empty()){
return 1000;
}
for (auto it = _pkt_map.begin(); it != _pkt_map.end(); ++it) {
next = it;
++next;
if (next != _pkt_map.end()) {
tmp.push_back(next->first - it->first);
} else {
break;
}
}
std::sort(tmp.begin(), tmp.end());
if (tmp.empty()) {
return 1000;
}
if(tmp.size()<16){
return 1000;
}
double dur =tmp[0]/1e6;
return (uint32_t)(1.0/dur);
if (tmp.size() < 16) {
return 1000;
}
double dur = tmp[0] / 1e6;
return (uint32_t)(1.0 / dur);
}
void RecvRateContext::inputPacket(TimePoint& ts, size_t size ) {
void RecvRateContext::inputPacket(TimePoint &ts, size_t size) {
if (_pkt_map.size() > 100) {
_pkt_map.erase(_pkt_map.begin());
}
auto tmp = DurationCountMicroseconds(ts - _start);
auto tmp = DurationCountMicroseconds(ts - _start);
_pkt_map.emplace(tmp, tmp);
}
uint32_t RecvRateContext::getRecvRate() {
if(_pkt_map.size()<2){
if (_pkt_map.size() < 2) {
return 0;
}
auto first = _pkt_map.begin();
auto last = _pkt_map.rbegin();
double dur = (last->first - first->first)/1000000.0;
double dur = (last->first - first->first) / 1000000.0;
size_t bytes = 0;
for(auto it : _pkt_map){
for (auto it : _pkt_map) {
bytes += it.second;
}
double rate = (double)bytes/dur;
double rate = (double)bytes / dur;
return (uint32_t)rate;
}

27
srt/Statistic.hpp
View File

@ -6,41 +6,42 @@
#include "Packet.hpp"
namespace SRT {
class PacketRecvRateContext {
public:
PacketRecvRateContext(TimePoint start):_start(start){};
PacketRecvRateContext(TimePoint start): _start(start) {};
~PacketRecvRateContext() = default;
void inputPacket(TimePoint& ts);
void inputPacket(TimePoint &ts);
uint32_t getPacketRecvRate();
private:
std::map<int64_t,int64_t> _pkt_map;
TimePoint _start;
std::map<int64_t, int64_t> _pkt_map;
};
class EstimatedLinkCapacityContext {
public:
EstimatedLinkCapacityContext(TimePoint start):_start(start){};
EstimatedLinkCapacityContext(TimePoint start) : _start(start) {};
~EstimatedLinkCapacityContext() = default;
void inputPacket(TimePoint& ts);
void inputPacket(TimePoint &ts);
uint32_t getEstimatedLinkCapacity();
private:
std::map<int64_t,int64_t> _pkt_map;
TimePoint _start;
std::map<int64_t, int64_t> _pkt_map;
};
class RecvRateContext {
public:
RecvRateContext(TimePoint start):_start(start){};
RecvRateContext(TimePoint start): _start(start) {};
~RecvRateContext() = default;
void inputPacket(TimePoint& ts,size_t size);
void inputPacket(TimePoint &ts, size_t size);
uint32_t getRecvRate();
private:
std::map<int64_t,size_t> _pkt_map;
TimePoint _start;
TimePoint _start;
std::map<int64_t, size_t> _pkt_map;
};
} // namespace SRT
#endif // ZLMEDIAKIT_SRT_STATISTIC_H