XP下调用百度ai报错 The underlying connection was closed: An unexpected error occurred on a send.
调用识别接口时，认证设置成了SSL3 xp 下 加上这个就可以了 ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3; ...
原文：微信接口问题(The underlying connection was closed: An unexpected error occurred on a send)
突然在调用微信接口是报：The underlying connection was closed: An unexpected error occurred on a send错误，跟踪了半天，是因为在调用阿里人脸识别接口时，接认证设置成了SSL ，而微信接口支持TLS,所以就会报错。并且在更新后又正常的问题， ServicePointManager.SecurityProtocol Securi ...
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