From 2284f5ad15d58b520492d6b68786261cc0a57fa9 Mon Sep 17 00:00:00 2001
From: Alexandre <44178713+alexbelgium@users.noreply.github.com>
Date: Sun, 31 Oct 2021 05:58:21 +0100
Subject: [PATCH] Create 92-set_socket_buffer_size.sh

---
 .../cont-init.d/92-set_socket_buffer_size.sh  | 59 +++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 transmission/rootfs/etc/cont-init.d/92-set_socket_buffer_size.sh

diff --git a/transmission/rootfs/etc/cont-init.d/92-set_socket_buffer_size.sh b/transmission/rootfs/etc/cont-init.d/92-set_socket_buffer_size.sh
new file mode 100644
index 000000000..3f29cda5c
--- /dev/null
+++ b/transmission/rootfs/etc/cont-init.d/92-set_socket_buffer_size.sh
@@ -0,0 +1,59 @@
+#!/bin/sh
+# ***************************************************************************************
+#     set_socket_buffer_size.sh
+# ***************************************************************************************
+
+OS_NAME=`uname --`
+
+if [ "$1" = "" ]; then
+  SIZE=10485760
+else
+  SIZE=$1
+fi
+
+echo "Setting socket maximum buffer size to $SIZE"
+
+if [ "$OS_NAME" = "Linux" ]; then
+  USER_ID=`id -u`
+  PROC_ROOT=/proc/sys/net/core
+
+  # Check required priviledge
+  if [ "$USER_ID" = "0" ]; then
+
+  if [ ! -w $PROC_ROOT/wmem_max ]; then
+    echo "Cannot write to $PROC_ROOT/wmem_max" 
+    break 2
+  fi
+
+  if [ ! -w $PROC_ROOT/rmem_max ]; then
+    echo "Cannot write to $PROC_ROOT/rmem_max"
+    break 2
+  fi
+
+  SIZE=4194304
+  echo $SIZE > $PROC_ROOT/wmem_max
+  # If net.core.rmem_max present in /etc/sysctl.conf, change value to "$SIZE"
+  #	else, add "net.core.rmem_max = $SIZE" to /etc/sysctl.conf
+  
+  if grep --silent ^net.core.rmem_max /etc/sysctl.conf; then
+    sed -i 's/^net.core.rmem_max.*/net.core.rmem_max = '$SIZE'/g' /etc/sysctl.conf
+  else
+    echo "" >> /etc/sysctl.conf
+    echo "net.core.rmem_max = $SIZE" >> /etc/sysctl.conf
+  fi
+
+  SIZE=1048576
+  echo $SIZE > $PROC_ROOT/rmem_max
+  if grep --silent ^net.core.wmem_max /etc/sysctl.conf; then
+    sed -i 's/^net.core.wmem_max.*/net.core.wmem_max = '$SIZE'/g' /etc/sysctl.conf
+  else
+    echo "" >> /etc/sysctl.conf
+    echo "net.core.wmem_max = $SIZE" >> /etc/sysctl.conf
+  fi
+  else
+    echo "This script can only be run by root user or sudoer" 
+  fi 
+fi
+
+echo "Error: unknown platform: $OS_NAME"
+exit 1