frp启动报错“[W] [control.go:113] login to server failed: EOF”

内网穿透一直用的frp，在公网的阿里云搭建了一个frp的server，一直用的挺好，最近有个新设备上也要内网穿透，于是装了frpc，没想到启动报错了
启动命令：

/home/unierm/frp/frpc -c /home/unierm/frp/frpc.ini

报错：

2018/08/31 15:00:36 [I] [proxy_manager.go:300] proxy removed: []
2018/08/31 15:00:36 [I] [proxy_manager.go:310] proxy added: [ssh]
2018/08/31 15:00:36 [I] [proxy_manager.go:333] visitor removed: []
2018/08/31 15:00:36 [I] [proxy_manager.go:342] visitor added: []
2018/08/31 15:00:36 [W] [control.go:113] login to server failed: EOF
EOF
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原因是因为最近装的这个frpc版本是0.21.0，而之前的frps版本是0.16.0，于是就降了一下frpc的版本，解决了问题：

2018/08/31 15:19:09 [I] [proxy_manager.go:298] proxy removed: []
2018/08/31 15:19:09 [I] [proxy_manager.go:308] proxy added: [ssh]
2018/08/31 15:19:09 [I] [proxy_manager.go:331] visitor removed: []
2018/08/31 15:19:09 [I] [proxy_manager.go:340] visitor added: []
2018/08/31 15:19:09 [I] [control.go:240] [1a851d2fa9932d31] login to server success, get run id [1a851d2fa9932d31], server udp port [0]
2018/08/31 15:19:09 [I] [control.go:165] [1a851d2fa9932d31] [ssh] start proxy success
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