underlying transport error(solved in my case)

[AndyTesla]

Once I did nothing to the code that deal with websocket(I thought), but somehow "underlying transport error" occured. After testing I found it was because I wrote

std::locale::global(std::locale("zh_CN.utf-8"))

to set timezone, that will inevitably lead to "underlying transport error" in my case. So be careful when setting timezone

[xiaoxin-mz]

#1131