KDEConnect/Android Emulator
| Under Construction |
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| This is a new page, currently under construction! |
Running kdeconnect in an emulator
The android emulator uses the default qemu User Networking (SLIRP) backend which does not allow the emulator to be directly accessible from the host nor the local network, which prevents kdeconnect running on the desktop from seeing kdeconnect running in an emulator. In order to get a fully working network in the emulator it needs to be configured to use the tap networking backend which as an added bonus offers much better performance than the default user backend.
Running the emulator with the tap backend will create a virtual network device on the host machine that can than be configured as if it is a real ethernet card allowing you to create virtually any type of network topology. The most straightforward topology that can be created is the public bridge setup. In this setup we simply put both the emulators virtual interface and the desktops lan interface into a bridge so they will share the same network space (e.g. single IP-subnet). Another topology that can be used is the Routing with iptables setup this involves a little more work but will work in situations where your lan device does not support bridging (eg. some wireless drivers)
The public bridge setup
First you will have to unconfigure your lan interface, create the bridge, add your lan interface to it and assign the bridge an ip address. Assuming your lan interface is eth0 and the bridge interface you want to create is br0:
sudo ifconfig eth0 0.0.0.0 sudo ip link add br0 type bridge sudo ip link set eth0 master br0 dhclient br0
To make the above changes permanent do the following: taken from kvm docs and reboot your system
| System | Changes |
|---|---|
| RedHat/Fedora |
DEVICE=br0 BOOTPROTO=dhcp ONBOOT=yes TYPE=Bridge STP=no ZONE=<the same zone as eth0 is in> |
| Debian | Edit /etc/network/interfaces
# Replace old eth0 config with br0 auto # Use old eth0 config for br0 and configure the bridge
iface br0 inet dhcp
bridge_ports eth0
bridge_stp off
bridge_maxwait 0
bridge_fd 0
|
| SuSE |
|
Next you have to allow qemu-bridge-helper to add tap interfaces to this bridge, using your favorite text editor:
sudo vi /etc/qemu/bridge.conf
- and add the following line:
allow br0
You can now start the emulator using the following command replacing <avd_name> with the name of an existing emulator:
emulator -avd <avd_name> -qemu --device virtio-net-pci,netdev=n1 -netdev tap,id=n1,"helper=/usr/libexec/qemu-bridge-helper --br=br0"&
To list available devices to use as <avd_name> use:
emulator -list-avds
The routing with iptables setup
Note