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                            # 1    權限認證思路
前面已可以正確收發信息了 本章主要內容為編寫權限認證模塊 大體如下圖(有需要后續會補充流程圖)
![](https://i.loli.net/2019/03/14/5c8a1394798be.png)
為了前期方便測試 編寫 暫時將權限認證與im同時編寫在一套系統里 后續會剝離出去
* 當第一次連接進來如127.0.0.1?token=xx 我們獲取token后 判斷用戶是否登錄,若未登錄,則主動發送信息通知未登錄。登錄成功后 需要將用戶的登錄信息廣播給各節點
* 若未登錄 則需要調取http接口 獲取token(詳情見權限認證模塊)


                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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