state过长

[beardidi]

配置了微信登录，但出现state过长的错误，请问是怎么回事？谢谢

[ldming-com]

没遇到过呢，能提供一下具体的错误详情么？

[beardidi]

好像是property编码后过长造成的。代码是：
调用：
var redirectUrl = Url.Page("./ExternalLogin", pageHandler: "Callback", values: new { returnUrl });
var properties = _signInManager.ConfigureExternalAuthenticationProperties(provider, redirectUrl);
return new ChallengeResult(provider, properties);

state的值是：
CfDJ8HT-XUxwX39NliIYvuVEwPsX0pZHwbJnvR5pmAS-3yVHDyKM63iXwLQuuuSRTMFWbPR--WZd2nbV3G-IrrxGXRy0eZfijNFK6VJUbXKWwoLO4mCsIQvZagDJiRy1JNTenjKTvwXnmeJUx_Nh3eOem0dUBBiTvblvq-1O-smkt29o9Padw0zcdyGPIv9_BoXtbSCSAhVNY5viYQnunBr8a8-RaUhE481qOmgJb_rXmkJYX7R2i9Bd9n98D3v3wJv77u5SH_0U_dIPgSLfPNdrInAaNMeIFLGTAdSs8UnwycOk