usb可以投屏，wifi不能投屏，已经在同一网络wifi

[xiaohushi512]

update devices...
adb run
AdbProcessImpl::out:List of devices attached
8d2bd18 device
192.168.2.177:5555 device

get ip...
adb run
wait for the end of the current command to run

AdbProcessImpl::out:wlan0 Link encap:UNSPEC Driver icnss
inet addr:192.168.2.177 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: 240e:338:a20:73a1:c0db:629c:48b:ce97/64 Scope: Global
inet6 addr: fe80::9687:e0ff:fe5a:524a/64 Scope: Link
inet6 addr: 240e:338:a20:73a1:9687:e0ff:fe5a:524a/64 Scope: Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:13584661 errors:0 dropped:0 overruns:0 frame:0
TX packets:7797250 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3000
RX bytes:12515805421 TX bytes:636590176

wireless connect...
adb run
AdbProcessImpl::out:already connected to 192.168.2.177:5555

update devices...
adb run
AdbProcessImpl::out:List of devices attached
8d2bd18 device
192.168.2.177:5555 device

start server...

以上是什么问题？能usb连接投屏，不能WIFI。已经在同一网络wifi