Unity（Mono）关于Https的一个坑

使用HttpWebRequest写的底层网络模块，证书部分全部返回True，调用微信公众号（小程序）二维码，以及小程序二维码，报错如下：

System.Net.WebException: Error: TrustFailure (The authentication or decryption has failed.) ---> System.IO.IOException: The authentication or decryption has failed. ---> System.IO.IOException: The authentication or decryption has failed. ---> Mono.Security.Protocol.Tls.TlsException: Invalid certificate received from server. Error code: 0xffffffff800b010a
at Mono.Security.Protocol.Tls.RecordProtocol.EndReceiveRecord (System.IAsyncResult asyncResult) [0x00037] in <eb1224ae7b184cd09343d47f8a05481b>:0
at Mono.Security.Protocol.Tls.SslClientStream.SafeEndReceiveRecord (System.IAsyncResult ar, System.Boolean ignoreEmpty) [0x00000] in <eb1224ae7b184cd09343d47f8a05481b>:0
at Mono.Security.Protocol.Tls.SslClientStream.NegotiateAsyncWorker (System.IAsyncResult result) [0x00071] in <eb1224ae7b184cd09343d47f8a05481b>:0
--- End of inner exception stack trace ---
at Mono.Security.Protocol.Tls.SslClientStream.EndNegotiateHandshake (System.IAsyncResult result) [0x00032] in <eb1224ae7b184cd09343d47f8a05481b>:0
at Mono.Security.Protocol.Tls.SslStreamBase.AsyncHandshakeCallback (System.IAsyncResult asyncResult) [0x0000c] in <eb1224ae7b184cd09343d47f8a05481b>:0
--- End of inner exception stack trace ---

解决方案：

CMD 中 D:\Program Files\Unity_2017_3_1_f1\Editor\Data\MonoBleedingEdge\lib\mono\4.5\mozroots.exe --import --sync

对应路径自己改成自己的，把证书导入，就可以了...，老版本不成功的可能要替换mozroots的版本

为什么Windows下没问题：好像是因为Windows中自带证书...

Mono下的原因参考如下：

原因参考：https://www.mono-project.com/docs/faq/security/