kimmking commented on issue #1533: 在Dubbo的Filter里面无法拿到隐式传参的参数（I can't get the attachment in Dubbo Filter）？ URL: https://github.com/apache/incubator-dubbo/issues/1533#issuecomment-377895088 @techyang @CoderDade you can contact me for more details with weixin id:kimmking I guess you both use some http-based protocols like rest,cause the http body which represent request data can't contains RpcContext.Attachments, then you can add RpcContextFilter to your potocol, and RpcContextFilter will add/get attachments key-value pairs by http headers.
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