[Unity] Unable to add package [git地址] OpenSSL SSL_read: Connection was reset, errno 10054问题_[package manager window] cannot perform upm operat

OpenSSL SSL_read: Connection was reset, errno 10054的问题

Cannot perform upm operation: Unable to add package Unable to add package [https://github.com/Whinarn/UnityMeshSimplifier.git] OpenSSL SSL_read: Connection was reset, errno 10054

在于该地址被墙了，访问不到，开梯子即可解决。

或者修改Host将Github的域名地址改为IP地址。

打开Windows: C:\Windows\System32\drivers\etc\hosts

访问IP Tracer & Tracker - IP Address Lookup Made Easy

输入gitHub.com，解析出IP地址，将IP地址写入Host

打开host（文本编辑器/notepad++都行），添加下面代码：

140.82.113.3		github.com

 再次重新添加git库即可。