push_to_server_example crashed

platform : Windows10
tools : GCC 8.1.0 x86_64-w64-migw32,
           CMake 3.27

I added wsock32 lib to CMakelist and built examples successfully.But when I run push_to_server_example.exe,it crashed after a few seconds and threw a message like this:

```
terminate called after throwing an instance of 'std::length_error'
what(): basic_string::_ "M_replace_aux"
```