frp使用过程中会出现各种错误信息，有些朋友不太清楚，打算记录一些常见的错误返回代码，这里介绍一下frpc客户端[W] [control.go:111] login to server failed: authorization failed的错误处理方法：
frpc登录成功正确的返回信息应该是：
C:UsersAdministrator>C:Windowsadfrpc.exe -c C:Windowsadfrpc.ini
2018/04/28 15:32:36 [I] [proxy_manager.go:299] proxy removed: []
2018/04/28 15:32:36 [I] [proxy_manager.go:309] proxy added: myname.chuantou]
2018/04/28 15:32:36 [I] [proxy_manager.go:332] visitor removed: []
2018/04/28 15:32:36 [I] [proxy_manager.go:341] visitor added: []
2018/04/28 15:32:36 [I] [control.go:242] [1f64bfaeccf6cb39] login to erver success, get run id [1f64bfaeccf6cb39], server udp port [7001]
2018/04/28 15:32:37 [I] [control.go:167] [1f64bfaeccf6cb39] [myname.xxorg] start proxy success
frpc登录失败时返回login to server failed: authorization failed
C:UsersAdministrator>C:Windowsadfrpc.exe -c C:Windowsadfrpc.ini
2018/04/28 15:31:31 [I] [proxy_manager.go:299] proxy removed: []
2018/04/28 15:31:31 [I] [proxy_manager.go:309] proxy added: [myname.chuantou]
2018/04/28 15:31:31 [I] [proxy_manager.go:332] visitor removed: []
2018/04/28 15:31:31 [I] [proxy_manager.go:341] visitor added: []
2018/04/28 15:31:31 [E] [control.go:232] authorization failed
2018/04/28 15:31:31 [W] [control.go:111] login to server failed: authorization failed authorization failed
login to server failed: authorization failed错误的原因及处理办法
login to server failed: authorization failed是因为token错误导致的，可以检查token的值是不是正确，比如本站提供的免费frp内网穿透服务器的token值是 www.chuantou.org ,另外一种错误的原因是0.17.0以前的版本沿用了特权模式时候的写法privilege_token = www.chuantou.org ，从0.17.0开始使用token = www.chuantou.org ，所以检查是不是token的配置项名称错误了。