The server stun:35.223.194.221:3478 returned an error with code=701: STUN server address is incompatible. The server stun:stun1.l.google.com:19302 returned an error with code=701: STUN host lookup received error. The server stun:35.223.194.221:3478 returned an error with code=701: STUN bind...
Relay server即为turn中继服务器,而STUN server的作用是通过收集NAT背后peer端(即:躲在路由器或交换机后的电脑)对外暴露出来的ip和端口,找到一条可穿透路由器的链路,俗称“打洞”。stun/turn服务器通常要部署在公网上,能被所有peer端访问到,coturn开源项目同时实现了stun和turn服务的功能,是webrtc应用的必备首选。