Connection closed before full header was received

Flutter的Dio报错：

Connection closed before full header was received

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可以检查一下是不是端口有问题。

同事把端口设置为1433，就报告这个错误。换个端口就好了。

1433是SqlServer的端口，因此有是可能APP连接到别人的应用服务器上了。