没有成功建立data-channel

[LiangJunqiang]

基于您的src/data-channel/main.cpp，修改过时接口调用并增加输出后运行结果如下：

PS E:\projects\WebRTC\src> .\out\Debug\Windows-x64\data_channel_demo.exe
A creating offer...
A created SDP
A set local description and send to peer
B received peer SDP
B create answer
B created SDP
B set local description and send to peer
A received peer SDP
A collected candidate and send to peer
B received ice candidate and add candidate
B collected candidate and send to peer
A received ice candidate and add candidate
A collected candidate and send to peer
B received ice candidate and add candidate
B collected candidate and send to peer
A received ice candidate and add candidate
A collected candidate and send to peer
B received ice candidate and add candidate
B collected candidate and send to peer
A received ice candidate and add candidate
A collected candidate and send to peer
B received ice candidate and add candidate
B collected candidate and send to peer
A received ice candidate and add candidate
A collected candidate and send to peer
B received ice candidate and add candidate
B collected candidate and send to peer
A received ice candidate and add candidate

奇怪的是一直没有调用OnStateChange()和OnDataChannel()，即没有成功创建data channel，可能也没有成功创建peerconnection。暂时不知道是什么问题，希望得到帮助，谢谢