Threading model in webrtc native

WebRTC Basic threads in

In order to reduce the complexity of the system , Improve the efficiency of the system ,WebRTC A multithreading framework is designed , And made elaborate design .

It mainly includes three threads ：

rtc::Thread* network_thread;
rtc::Thread* worker_thread;
rtc::Thread* signaling_thread;

network_thread
Network thread （Network thread ）
It mainly works in transmission （transport） layer , The specific work is as follows ：
Transport The initialization
Receive data from the network , Send to Worker thread
from Worker thread receive data , Send to network

worker_thread;
A way to handle a large workload , Methods within this thread may take a long time to process

signaling_thread;
Ways to handle small workloads , It is required that all methods in this thread must return quickly

signaling_thread = rtc::Thread::CreateWithSocketServer();
CreatePeerConnectionFactory
peer_connection_factory_ = webrtc::CreatePeerConnectionFactory(
      network_thread ,  worker_thread,
      sig