Unable to connect Android ADB over TCP/IP

Question

I'm trying to get the Android Debug Bridge working over wifi from my 64-bit Windows 7 desktop computer to my Nexus10. I connect the device over USB, and then I followed "How can I connect to Android with ADB over TCP?, but I end up with an error message that it can't connect:

C:\adt-bundle\sdk\platform-tools>adb usb
restarting in USB mode

C:\adt-bundle\sdk\platform-tools>adb devices -l
List of devices attached
R32D300NXJV            device product:mantaray model:Nexus_10 device:manta


C:\adt-bundle\sdk\platform-tools>adb tcpip 5555
restarting in TCP mode port: 5555

C:\adt-bundle\sdk\platform-tools>adb connect 192.168.231.2
unable to connect to 192.168.231.2:5555

To start debugging this, I tried pinging the Nexus10 from my desktop computer. Both devices are connected to the same router, by a cable in the case of the desktop computer, and wirelessly for the Nexus10. However, I got

C:\adt-bundle\sdk\platform-tools>ping 192.168.231.2

Pinging 192.168.231.2 with 32 bytes of data:
Reply from 192.168.231.61: Destination host unreachable.
Reply from 192.168.231.61: Destination host unreachable.
Reply from 192.168.231.61: Destination host unreachable.
Reply from 192.168.231.61: Destination host unreachable.

Ping statistics for 192.168.231.2:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

The IP address 192.168.231.61 which returns "Destination host unreachable" is the IP address of my desktop computer. Although the ping doesn't work, I don't know whether the fact that I can't ping is the source of my ADB problem or whether it's unconnected to the issue.

I'm running Android Debug Bridge version 1.0.31. Can anyone help?

Answer 1

This must have been a networking problem, because when I connected via a wireless network on a different subnet, then (1) I was able to ping the nexus10 from my desktop, and (2) ADB connected over TCPIP OK. So my conclusion is that my desktop/router/nexus10 had some bizarre routing incompatibility when on the same subnet, when disappeared when they were on different subnets.

Thanks anyway.

Answer 2

I have problems both with my nexus 4 and my nexus 10 on the same wifi as my laptop. The nexus 4 I have had more time to experiment with, and what helps is either rebooting the phone, or using "DNS Hostname Changer" to restart networking and then I can connect again.

The Nexus 10 seems to be a bit worse than Nexus 4 though....