Add Webui and other features.

1. Add Webui to manage the module.
2. Add Set initcwnd & initrwnd value to max feature.
3. Fix old config not saved during update bug.
4. Fix minor bugs in script.
5. Refactor shell scripts.
6. Update Readme to provide more Information.
7. Fix versioning issue in build.yml.

Author: fatalcoder524

.github/workflows/build.yml

@@ -32,7 +32,13 @@ jobs:
           MINOR="${{ github.event.inputs.minor }}"
           
           IFS='.' read -r CURRENT_MAJOR CURRENT_MINOR <<< "$VERSION"
-          NEW_VERSION="$((CURRENT_MAJOR + MAJOR)).$((CURRENT_MINOR + MINOR))"
+          NEW_MAJOR=$((CURRENT_MAJOR + MAJOR))
+          if [ "$MAJOR" -gt 0 ]; then
+              NEW_MINOR="$MINOR"
+          else
+              NEW_MINOR=$((CURRENT_MINOR + MINOR))
+          fi
+          NEW_VERSION="$NEW_MAJOR.$NEW_MINOR"
           NEW_VERSIONCODE=$((VERSION_CODE + 1))
           
           echo "new_version=$NEW_VERSION" >> "$GITHUB_ENV"

README.md

@@ -4,16 +4,30 @@ A Magisk/KernelSU module to change tcp congestion algorithm based on current act
 # Why?
 In certain kernel, TCP Congestion Algorithm BBR might be enabled. Or you want to enable certain algorithm or settings based on what interface you are using. I observed that in my kernel, when i use BBR with WiFi I get 50-60 Mbps more upload speed compared to cubic, but BBR gives bad upload speed in cellular. So I designed this module to switch based on active internet facing interface.
 
+# Features
+1. Set TCP Congestion Algorithm based on interface(Wi-Fi/Cellular).
+2. Auto Change TCP Congestion Algorithm on interface change.
+3. Set initcwnd and initrwnd value to max.
+
 # How to use
 1. Install the module.
 2. It creates 2 files `wlan_{algo}` and `rmnet_data_{algo}` in module folder.
 3. Reboot device.
+4. Basic Functionality of module must run normally on boot.
+
+# Tuning Module by files [/data/adb/modules/tcp_optimiser]
+1. TCP Congestion Algorithm can be changed for given interface by editing `{algo}` part of file name. `wlan_{algo}` for Wi-Fi and `rmnet_data_{algo}` for Cellular.
+2. Create an empty file named `initcwnd_initrwnd` to set initcwnd and initrwnd value to max values.
+3. Create an empty file named `kill_connections` to kill all connections during switch. [Be carefull!]
+4. Create an empty file named `force_apply` to apply changes immediately.
+
+# Tuning Module by WebUI
+All the module settings can be controlled using Module WebUI in KSU and APatch or KsuWebUIStandalone app for Magisk.
 
 ## Note:
 1. `{algo}` in filename can be any TCP congestion algorithm (cubic, bbr, reno etc..). 
 2. Default algorithm is **cubic** for **cellular**.
 3. Default algorithm is **bbr** if exists for **WiFi**. Else **cubic**.
-4. You can change algorithm by just renaming the file in same format. Eg: If you want to change WiFi TCP congestion algorithm to **reno**, rename `wlan_{algo}` file to `wlan_reno`.
-5. There is an option to kill current tcp connections during algorithm change. This might stop downloads, uploads or other ongoing connections. So apps affected might need to be restarted. To enable create a file named `kill_connections` in module folder. This is disabled by default.
-6. Algorithm is applied only if present in kernel.
-7. Module logs are present in `/data/adb/modules/tcp_optimiser/service.log`.
+4. There is an option to kill current tcp connections during algorithm change. This will stop downloads, uploads or other ongoing connections. So apps affected might need to be restarted. This is disabled by default.
+5. Algorithm is applied only if present in kernel.
+6. Module logs are present in `/data/adb/modules/tcp_optimiser/service.log`.

module/customize.sh

@@ -84,4 +84,18 @@ if check_exists_anywhere "kill"; then
     else
         ui_print " [-] Skipping $MODPATH/kill_connections: file already exists."
     fi
-fi
+fi
+
+if check_exists_anywhere "initcwnd"; then
+    # If file exists and KSU is true, copy any file from MODULEPATH with the same prefix
+    if [ "$KSU" = true ]; then
+        # Find any file starting with ${prefix}_ in MODULEPATH and copy it to MODPATH
+        source_file=$(find "$MODULE_PATH" -name "initcwnd_initrwnd" -print -quit)
+        if [ -n "$source_file" ]; then
+            cp "$source_file" "$MODPATH/"
+            ui_print " [+] Copied from $MODULE_PATH to $MODPATH: initcwnd_initrwnd"
+        fi
+    else
+        ui_print " [-] Skipping $MODPATH/initcwnd_initrwnd: file already exists."
+    fi
+fi

module/service.sh

@@ -1,78 +1,72 @@
 #!/system/bin/sh
 
 MODPATH="${0%/*}"
-LOGFILE="$MODPATH/service.log"
-FLAGFILE="/dev/.tcp_module_log_cleared"
-MAX_LOG_LINES=200
 DEBOUNCE_TIME=10
 
+. $MODPATH/utils.sh # Load utils
+
 # Get the list of available congestion control algorithms
 congestion_algorithms=$(cat /proc/sys/net/ipv4/tcp_available_congestion_control)
 
-# Clear log on first run after boot
-if [ ! -f "$FLAGFILE" ]; then
-    rm -f "$LOGFILE" >/dev/null 2>&1
-    touch "$FLAGFILE" >/dev/null 2>&1
-fi
-
 # On startup, reset description to default
 if [ -f "$MODPATH/module.prop" ]; then
     default_desc="TCP Optimisations & update tcp_cong_algo based on interface"
     sed -i '/^description=/d' "$MODPATH/module.prop" && echo "description=$default_desc" >> "$MODPATH/module.prop"
 fi
 
-log_print() {
-    local timestamp
-    timestamp=$(date +'%Y-%m-%d %H:%M:%S')
-    echo "$timestamp - $1" >> "$LOGFILE"
-
-    line_count=$(wc -l < "$LOGFILE" 2>/dev/null | awk '{print $1}')
-    if [ "$line_count" -gt "$MAX_LOG_LINES" ]; then
-        tail -n "$((MAX_LOG_LINES / 2))" "$LOGFILE" > "${LOGFILE}.tmp"
-        mv "${LOGFILE}.tmp" "$LOGFILE"
-    fi
-}
-
-# Run commands as root using su -c
-run_as_root() {
-    if [ "$(id -u)" -eq 0 ]; then
-        sh -c "$1"
-    else
-        su -c "$1"
-    fi
-}
-
 update_description() {
     local iface="$1"
     local algo="$2"
-    local icon="🌐"
+    local icon="⁉️"
 
     case "$iface" in
         Wi-Fi) icon="🛜" ;;
         Cellular) icon="📶" ;;
     esac
 
     local desc="TCP Optimisations & update tcp_cong_algo based on interface | iface: $iface $icon | algo: $algo"
-    run_as_root "sed -i '/^description=/d' \"$MODPATH/module.prop\" && echo \"description=$desc\" >> \"$MODPATH/module.prop\""
+    sed -i '/^description=/d' "$MODPATH/module.prop" && echo "description=$desc" >> "$MODPATH/module.prop"
 }
 
 kill_tcp_connections() {
     if [ -f "$MODPATH/kill_connections" ]; then
         log_print "Killing all TCP connections (IPv4 and IPv6) due to congestion change"
 
-        # Kill all IPv4 connections (destination 0.0.0.0/0)
-        run_as_root "ss -K dst 0.0.0.0/0"  # Kill all IPv4 connections
-        
-        # Kill all IPv6 connections (destination ::/0)
-        run_as_root "ss -K dst ::/0"  # Kill all IPv6 connections
+        # Kill all connections
+        ss -K
+    fi
+}
+
+set_max_initcwnd_initrwnd() {
+    local active_iface="$1"
+    if [ -f "$MODPATH/initcwnd_initrwnd" ]; then
+        maxBufferSize=$(cat /proc/sys/net/ipv4/tcp_rmem | awk '{print $3}')
+        mtu=$(ip link show "$active_iface" | awk '/mtu/ {print $NF}')
+        mtu=$((mtu - 40))
+        maxInitrwndValue=$((maxBufferSize / mtu))
+        local applied
+        applied=0
+
+        while IFS= read -r line; do
+            run_as_su "/system/bin/ip route change $line initcwnd 10 initrwnd $maxInitrwndValue"
+            if [ $? -eq 0 ]; then
+                 applied=1
+            fi
+        done <<EOF
+$(run_as_su "/system/bin/ip route show | grep \"dev $active_iface\"")
+EOF
+
+        if [ "$applied" -eq 1 ]; then
+            log_print "Setting initcwnd = 10; initrwnd = $maxInitrwndValue!"
+        fi
     fi
 }
 
 set_congestion() {
     local algo="$1"
     local mode="$2"
-    if grep -qw "$algo" /proc/sys/net/ipv4/tcp_available_congestion_control; then
-        run_as_root "echo \"$algo\" > /proc/sys/net/ipv4/tcp_congestion_control 2>/dev/null"
+    if echo "$congestion_algorithms" | grep -qw "$algo"; then
+        echo "$algo" > /proc/sys/net/ipv4/tcp_congestion_control 2>/dev/null
         log_print "Applied congestion control: $algo ($mode)"
         kill_tcp_connections
         update_description "$mode" "$algo"
@@ -81,7 +75,6 @@ set_congestion() {
     fi
 }
 
-
 get_active_iface() {
     iface=$(ip route get 192.0.2.1 2>/dev/null | awk '/dev/ {for(i=1;i<=NF;i++) if($i=="dev") print $(i+1)}')
     echo "$iface"
@@ -102,30 +95,33 @@ while true; do
 
     current_time=$(date +%s)
 
-    if [ "$new_mode" != "$last_mode" ]; then
+    if [ "$new_mode" != "$last_mode" ] || [ -f "$MODPATH/force_apply" ]; then
         if [ "$((current_time - change_time))" -ge "$DEBOUNCE_TIME" ]; then
             applied=0
             if [ "$new_mode" = "Wi-Fi" ]; then
                 for algo in $congestion_algorithms; do
                     if [ -f "$MODPATH/wlan_$algo" ]; then
                         set_congestion "$algo" "$new_mode"
+                        set_max_initcwnd_initrwnd "$iface"
                         applied=1
                         break
                     fi
                 done
-                [ "$applied" -eq 0 ] && set_congestion cubic "$new_mode"
+                [ "$applied" -eq 0 ] && set_congestion cubic "$new_mode" && set_max_initcwnd_initrwnd "$iface"
             elif [ "$new_mode" = "Cellular" ]; then
                 for algo in $congestion_algorithms; do
                     if [ -f "$MODPATH/rmnet_data_$algo" ]; then
                         set_congestion "$algo" "$new_mode"
+                        set_max_initcwnd_initrwnd "$iface"
                         applied=1
                         break
                     fi
                 done
-                [ "$applied" -eq 0 ] && set_congestion cubic "$new_mode"
+                [ "$applied" -eq 0 ] && set_congestion cubic "$new_mode" && set_max_initcwnd_initrwnd "$iface"
             fi
             last_mode="$new_mode"
             change_time="$current_time"
+			rm -f "$MODPATH/force_apply"
         fi
     fi
 

module/utils.sh

@@ -0,0 +1,32 @@
+#!/system/bin/sh
+
+MODPATH="${0%/*}"
+LOGFILE="$MODPATH/service.log"
+FLAGFILE="/dev/.tcp_module_log_cleared"
+MAX_LOG_LINES=200
+
+# Clear log on first run after boot
+if [ ! -f "$FLAGFILE" ]; then
+    rm -f "$LOGFILE" >/dev/null 2>&1
+    touch "$FLAGFILE" >/dev/null 2>&1
+fi
+
+log_print() {
+    message="$1"
+
+    timestamp=$(date +'%Y-%m-%d %H:%M:%S')
+    echo "$timestamp - $message" >> "$LOGFILE"
+
+    line_count=$(wc -l < "$LOGFILE" 2>/dev/null)
+    if [ "$line_count" -gt "$MAX_LOG_LINES" ]; then
+        tail -n "$((MAX_LOG_LINES / 2))" "$LOGFILE" > "${LOGFILE}.tmp"
+        mv "${LOGFILE}.tmp" "$LOGFILE"
+    fi
+}
+
+run_as_su() {
+    local cmd="$*"
+    su -c "$cmd"
+    local status=$?
+    return $status
+}

module/webroot/css/common.css

@@ -0,0 +1,126 @@
+:root {
+  --bg-color: #121212;
+  --card-bg: #1e1e1e;
+  --primary: #bb86fc;
+  --text: #e1e1e1;
+  --text-secondary: #a0a0a0;
+  --border-radius: 12px;
+  --spacing: 16px;
+  --footer-height: 60px;
+}
+
+* {
+  margin: 0;
+  padding: 0;
+  box-sizing: border-box;
+}
+
+body {
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
+  background-color: var(--bg-color);
+  color: var(--text);
+  padding: var(--spacing);
+  min-height: 100vh;
+  padding-bottom: calc(var(--footer-height) + var(--spacing));
+  position: relative;
+}
+
+.container {
+  max-width: 600px;
+  margin: 0 auto;
+  display: grid;
+  gap: var(--spacing);
+}
+
+.card {
+  background-color: var(--card-bg);
+  border-radius: var(--border-radius);
+  padding: var(--spacing);
+  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
+}
+
+.card-header {
+  margin-bottom: 16px;
+}
+
+.card-header h3 {
+  font-size: 1.1rem;
+  font-weight: 600;
+  color: var(--text);
+}
+
+.footer-nav {
+  position: fixed;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  height: var(--footer-height);
+  background-color: var(--card-bg);
+  display: flex;
+  justify-content: space-around;
+  align-items: center;
+  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2);
+}
+
+.nav-item {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  text-decoration: none;
+  color: var(--text-secondary);
+  height: 100%;
+  transition: color 0.3s;
+}
+
+.nav-item.active {
+  color: var(--primary);
+}
+
+.nav-icon {
+  font-size: 1.4rem;
+  margin-bottom: 4px;
+}
+
+.nav-text {
+  font-size: 0.8rem;
+}
+
+.module-content {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  text-align: center;
+  gap: 0;
+}
+
+.module-name {
+  font-size: 1.25rem;
+  font-weight: 600;
+}
+
+.version {
+  color: var(--text-secondary);
+  font-size: 0.9rem;
+  margin-top: 4px;
+  margin-bottom: 8px;
+}
+
+.link {
+  color: var(--primary);
+  text-decoration: none;
+  padding: 2px 0;
+  font-size: 0.8rem;
+}
+
+.page {
+  opacity: 0;
+  transform: translateY(20px);
+  transition: all 0.4s ease;
+}
+
+.page.active {
+  opacity: 1;
+  transform: translateY(0);
+}