From 650638da698b70edea23a67b868ee63f77087070 Mon Sep 17 00:00:00 2001
From: "Ycarus (Yannick Chabanois)" <ycarus@zugaina.org>
Date: Mon, 18 Jun 2018 17:27:41 +0000
Subject: [PATCH] Change some default MPTCP parameters, reload network if VPN
 seems to be down

---
 debian9-x86_64.sh |  6 +++---
 omr-6in4-service  |  2 ++
 shadowsocks.conf  | 10 +++++++---
 3 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/debian9-x86_64.sh b/debian9-x86_64.sh
index 633ac1e..78f68a8 100644
--- a/debian9-x86_64.sh
+++ b/debian9-x86_64.sh
@@ -106,7 +106,7 @@ fi
 
 if [ "$MLVPN" = "yes" ]; then
 	cd /tmp
-	wget -O /tmp/debian9-x86_64-mlvpn.sh http://www.openmptcprouter.com/server/debian-x86_64-mlvpn.sh
+	wget -O /tmp/debian9-x86_64-mlvpn.sh http://www.openmptcprouter.com/server/debian9-x86_64-mlvpn.sh
 	sh debian9-x86_64-mlvpn.sh
 fi
 
@@ -236,9 +236,9 @@ fi
 
 # Add OpenMPTCProuter VPS script version to /etc/motd
 if grep --quiet 'OpenMPTCProuter VPS' /etc/motd; then
-	sed -i 's:< OpenMPTCProuter VPS [0-9]*\.[0-9]* >:< OpenMPCTProuter VPS 0.25 >:' /etc/motd
+	sed -i 's:< OpenMPTCProuter VPS [0-9]*\.[0-9]* >:< OpenMPCTProuter VPS 0.26 >:' /etc/motd
 else
-	echo '< OpenMPTCProuter VPS 0.25 >' >> /etc/motd
+	echo '< OpenMPTCProuter VPS 0.26 >' >> /etc/motd
 fi
 
 if [ "$update" = "0" ]; then
diff --git a/omr-6in4-service b/omr-6in4-service
index 539556a..a21218d 100755
--- a/omr-6in4-service
+++ b/omr-6in4-service
@@ -31,6 +31,7 @@ _ping() {
 
 while true; do
 	source /etc/shorewall/params.vpn
+	local iface
 	currentaddr=$(ip addr show omr-6in4 | grep link/sit | awk '{print $2}' | tr -d "\n")
 	currentpeer=$(ip addr show omr-6in4 | grep link/sit | awk '{print $4}' | tr -d "\n")
 	if [ -n "$currentpeer" ]; then
@@ -60,6 +61,7 @@ $allip_mlvpn"
 					break
 				fi
 			done < <(printf '%s\n' "$allip")
+			[ -z "$iface" ] && systemctl -q restart systemd-networkd
 		fi
 	fi
 	sleep 5
diff --git a/shadowsocks.conf b/shadowsocks.conf
index fae949c..8908ce1 100644
--- a/shadowsocks.conf
+++ b/shadowsocks.conf
@@ -1,6 +1,6 @@
 # local sysctl settings can be stored in this directory
 # max open files
-fs.file-max = 51200
+fs.file-max = 512000
 # max read buffer
 net.core.rmem_max = 134217728
 # max write buffer
@@ -37,10 +37,14 @@ net.ipv4.tcp_rmem = 4096 87380 134217728
 # TCP write buffer
 net.ipv4.tcp_wmem = 4096 65536 134217728
 # turn on path MTU discovery
-net.ipv4.tcp_mtu_probing = 0
+net.ipv4.tcp_mtu_probing = 1
 
 # for low-latency network, use cubic instead
 net.ipv4.tcp_congestion_control = olia
 
 # Default conntrack is too small
-net.netfilter.nf_conntrack_max=131072
+net.netfilter.nf_conntrack_max = 131072
+
+# MPTCP settings
+net.mptcp.mptcp_checksum = 0
+net.mptcp.mptcp_syn_retries = 30
\ No newline at end of file