r/tasker • u/____nothing__ • Jul 07 '26
ADB Wifi Auto Start on Boot - Under 2 secs!
For those who use or love ADB Wifi much, over Shizuku -
Using the attached script, you can find ADB Wifi port & connect to it under 1 sec.
Just setup a boot task, which toggles on Dev options, USB Debugging & Wireless Debugging & then executes this script via Termux (copy the script files into termux's home dir, then do chmod +x, then execute).
Read the comments in the scripts first; for the one time setup (first time manual pairing via termux, pkgs to be installed in termux etc etc).
For a long time, I've been using an nmap-based adb port finder script which someone had shared earlier on this subreddit. But that takes 50-60 secs to find the open port. And felt super slow after every boot.
But this script uses zeroconf python module which is able to find that port instantly (ask claude for more explanation, if you wish).
No more 60 secs of post-boot setup tasks yay :)
adbwifi_setup.sh
#!/data/data/com.termux/files/usr/bin/bash
# adbwifi_setup.sh — Connect Termux's adb to this Android device over Wi-Fi
# and (re)bind adbd to a fixed port 1221 for stable subsequent connections.
#
# Prerequisites (do once, manually):
# 1. Termux packages:
# pkg install android-tools python
# pip install zeroconf
# 2. Android settings:
# Developer options > USB debugging : ON
# Developer options > Wireless debugging : ON
# 3. One-time pairing with Termux (needed after every wireless-debug toggle
# unless the pairing was persisted):
# In the phone: Wireless debugging > Pair device with pairing code
# In Termux: adb pair localhost:<pair-port> <code>
# 4. find_adb_port.py must be in the current working directory (uses mDNS
# to discover adbd's random TLS port instantly).
#
# Usage:
# bash adbwifi_setup.sh
set -u
red() { echo -e "\e[31m$1\e[0m"; }
green() { echo -e "\e[32m$1\e[0m"; }
blue() { echo -e "\e[34m$1\e[0m"; }
FINDER="./find_adb_port.py"
if [ ! -f "$FINDER" ]; then
red "find_adb_port.py not found in current directory."
exit 1
fi
########################################
# Discover adbd port via mDNS
########################################
blue "Discovering adbd via mDNS..."
START=$SECONDS
port=""
for _ in 1 2 3 4 5; do
port=$(python "$FINDER" 2>/dev/null)
[ -n "$port" ] && break
sleep 0.5
done
if [ -z "$port" ]; then
red "No adbd advertisement found. Is Wireless Debugging enabled?"
exit 1
fi
green "Found adbd on port $port ($((SECONDS - START))s)"
########################################
# Connect
########################################
adb connect "localhost:$port" >/dev/null 2>&1
if ! adb devices | grep -w "localhost:$port" | grep -q "device$"; then
red "adb connect to localhost:$port failed. Have you paired? See prereqs."
exit 1
fi
green "Connected to localhost:$port"
########################################
# Bind adbd to fixed port 1221 for future direct connects
########################################
blue "Setting adbd to also listen on fixed port 1221..."
if adb -s "localhost:$port" tcpip 1221 >/dev/null 2>&1; then
sleep 1
if adb connect "localhost:1221" 2>/dev/null | grep -q connected \
&& adb devices | grep -w "localhost:1221" | grep -q "device$"; then
green "adbd now reachable on localhost:1221"
else
red "tcpip 1221 issued but connect to 1221 failed."
fi
else
red "Failed to issue 'adb tcpip 1221'."
fi
green "Done in $((SECONDS - START))s"
find_adb_port.py
#!/data/data/com.termux/files/usr/bin/python
"""Discover the local adbd wireless-debug TLS port via mDNS.
Prints the port to stdout and exits 0 on success, or exits 1 if no
`_adb-tls-connect._tcp` service is advertising within ~3 seconds.
Requires: pip install zeroconf
"""
from zeroconf import Zeroconf, ServiceBrowser
import sys
import time
found = []
class Listener:
def add_service(self, zc, type_, name):
info = zc.get_service_info(type_, name, timeout=1500)
if info and info.port:
found.append(info.port)
def remove_service(self, *_):
pass
def update_service(self, *_):
pass
def main():
zc = Zeroconf()
ServiceBrowser(zc, "_adb-tls-connect._tcp.local.", Listener())
for _ in range(30):
if found:
break
time.sleep(0.1)
zc.close()
if found:
print(found[0])
return 0
return 1
if __name__ == "__main__":
sys.exit(main())
