How to enable adbd to listen to a port at boot time in Android?

Question

I have a rooted HTC Hero, and what I want to do is to enable the adbd to listen to a port at boot time.

I tried some code found here:

setprop service.adb.tcp.port 5555
stop adbd
start adbd

in an Android shell and it works great.

I tried to change the init.rc file. I added the above code in init.rc and I replaced it with the original file, through these commands:

adb push init.rc sdcard

adb shell
adb su
mount -o rw,remount -t yaffs2 /dev/block/mtdblock3 /
adb cp sdcard/init.rc /

The file is replaced successfully, but when I reboot my phone and try to connect through:

adb connect <IP>:5555

the connection is not being established.

Any ideas?

(PS. I don't want to use the remoteADB application and a shell command like am start -n ... )

Solution 1

This will make it persistent:

setprop persist.adb.tcp.port 5555

ADB over USB might not be available after reboot. To undo this setting, do:

setprop persist.adb.tcp.port ""

Solution 2

You need to unpack, modify, and repack the initrd inside the boot.img. You can find more on this at:

https://groups.google.com/forum/?fromgroups=#!topic/android-platform/w37x_WCrhMM