first step forward to merge conntrackd and conntrack into the same building chain

21 files changed, 0 insertions, 687 deletions

diff --git a/daemon/examples/sync/Makefile.am b/daemon/examples/sync/Makefile.am
deleted file mode 100644
index 28e7643..0000000
--- a/daemon/examples/sync/Makefile.am
+++ /dev/null
@@ -1 +0,0 @@
-SUBDIRS = persistent nack
diff --git a/daemon/examples/sync/nack/Makefile.am b/daemon/examples/sync/nack/Makefile.am
deleted file mode 100644
index 6fd99b1..0000000
--- a/daemon/examples/sync/nack/Makefile.am
+++ /dev/null
@@ -1,2 +0,0 @@
-EXTRA_DIST = script_backup.sh script_master.sh 
-SUBDIRS = node1 node2
diff --git a/daemon/examples/sync/nack/README b/daemon/examples/sync/nack/README
deleted file mode 100644
index 66987f7..0000000
--- a/daemon/examples/sync/nack/README
+++ /dev/null
@@ -1 +0,0 @@
-This directory contains the files for the NACK based protocol
diff --git a/daemon/examples/sync/nack/node1/Makefile.am b/daemon/examples/sync/nack/node1/Makefile.am
deleted file mode 100644
index edc0ed7..0000000
--- a/daemon/examples/sync/nack/node1/Makefile.am
+++ /dev/null
@@ -1 +0,0 @@
-EXTRA_DIST = conntrackd.conf keepalived.conf 
diff --git a/daemon/examples/sync/nack/node1/conntrackd.conf b/daemon/examples/sync/nack/node1/conntrackd.conf
deleted file mode 100644
index f24fa7e..0000000
--- a/daemon/examples/sync/nack/node1/conntrackd.conf
+++ /dev/null
@@ -1,125 +0,0 @@
-#
-# Synchronizer settings
-#
-Sync {
-	Mode NACK {
-		#
-		# Size of the buffer that hold destroy messages for 
-		# possible resends (in bytes)
-		#
-		ResendBufferSize 262144
-
-		#
-		# Entries committed to the connection tracking table 
-		# starts with a limited timeout of N seconds until the
-		# takeover process is completed.
-		#
-		CommitTimeout 180
-
-		# Set Acknowledgement window size
-		ACKWindowSize 20
-	}
-
-	#
-	# Multicast IP and interface where messages are
-	# broadcasted (dedicated link). IMPORTANT: Make sure
-	# that iptables accepts traffic for destination
-	# 225.0.0.50, eg:
-	#
-	#	iptables -I INPUT -d 225.0.0.50 -j ACCEPT
-	#	iptables -I OUTPUT -d 225.0.0.50 -j ACCEPT
-	#
-	Multicast {
-		IPv4_address 225.0.0.50
-		IPv4_interface 192.168.100.100 # IP of dedicated link
-		Group 3780
-		Backlog 20
-	}
-
-	# Enable/Disable message checksumming
-	Checksum on
-
-	# Uncomment this if you want to replicate just certain TCP states.
-	# This option introduces a tradeoff in the replication: it reduces
-	# CPU consumption and lost messages rate at the cost of having 
-	# backup replicas that don't contain the current state that the active 
-	# replica holds. TCP states are: SYN_SENT, SYN_RECV, ESTABLISHED,
-	# FIN_WAIT, CLOSE_WAIT, LAST_ACK, TIME_WAIT, CLOSE, LISTEN.
-	# 
-	# Replicate ESTABLISHED TIME_WAIT for TCP
-}
-
-#
-# General settings
-#
-General {
-	#
-	# Number of buckets in the caches: hash table
-	#
-	HashSize 8192
-
-	#
-	# Maximum number of conntracks: 
-	# it must be >= $ cat /proc/sys/net/ipv4/netfilter/ip_conntrack_max
-	#
-	HashLimit 65535
-
-	#
-	# Logfile
-	#
-	LogFile /var/log/conntrackd.log
-
-	#
-	# Lockfile
-	# 
-	LockFile /var/lock/conntrack.lock
-
-	#
-	# Unix socket configuration
-	#
-	UNIX {
-		Path /tmp/sync.sock
-		Backlog 20
-	}
-
-	#
-	# Netlink socket buffer size
-	#
-	SocketBufferSize 262142
-
-	#
-	# Increase the socket buffer up to maximum if required
-	#
-	SocketBufferSizeMaxGrown 655355
-}
-
-#
-# Ignore traffic for a certain set of IP's: Usually
-# all the IP assigned to the firewall since local
-# traffic must be ignored, just forwarded connections
-# are worth to replicate
-#
-IgnoreTrafficFor {
-	IPv4_address 127.0.0.1 # loopback
-	IPv4_address 192.168.0.1
-	IPv4_address 192.168.1.1
-	IPv4_address 192.168.100.100 # dedicated link ip
-	IPv4_address 192.168.0.100 # virtual IP 1
-	IPv4_address 192.168.1.100 # virtual IP 2
-}
-
-#
-# Do not replicate certain protocol traffic 
-#
-IgnoreProtocol {
-	UDP
-	ICMP
-	IGMP
-	VRRP
-	# numeric numbers also valid
-}
-
-#
-# Strip NAT traffic
-#
-StripNAT
diff --git a/daemon/examples/sync/nack/node1/keepalived.conf b/daemon/examples/sync/nack/node1/keepalived.conf
deleted file mode 100644
index 41aa35b..0000000
--- a/daemon/examples/sync/nack/node1/keepalived.conf
+++ /dev/null
@@ -1,38 +0,0 @@
-vrrp_sync_group G1 {   # must be before vrrp_instance declaration
-  group {
-    VI_1
-    VI_2
-  }
-  notify_master /etc/conntrackd/script_master.sh
-  notify_backup /etc/conntrackd/script_backup.sh
-}
-
-vrrp_instance VI_1 {
-    interface eth1
-    state SLAVE
-    virtual_router_id 61
-    priority 80
-    advert_int 3
-    authentication {
-      auth_type PASS
-      auth_pass papas_con_tomate
-    }
-    virtual_ipaddress {
-        192.168.0.100   # default CIDR mask is /32
-    }
-}
-
-vrrp_instance VI_2 {
-    interface eth0
-    state SLAVE
-    virtual_router_id 62
-    priority 80
-    advert_int 3
-    authentication {
-      auth_type PASS
-      auth_pass papas_con_tomate
-    }
-    virtual_ipaddress {
-        192.168.1.100
-    }
-}
diff --git a/daemon/examples/sync/nack/node2/Makefile.am b/daemon/examples/sync/nack/node2/Makefile.am
deleted file mode 100644
index edc0ed7..0000000
--- a/daemon/examples/sync/nack/node2/Makefile.am
+++ /dev/null
@@ -1 +0,0 @@
-EXTRA_DIST = conntrackd.conf keepalived.conf 
diff --git a/daemon/examples/sync/nack/node2/conntrackd.conf b/daemon/examples/sync/nack/node2/conntrackd.conf
deleted file mode 100644
index 4f15773..0000000
--- a/daemon/examples/sync/nack/node2/conntrackd.conf
+++ /dev/null
@@ -1,124 +0,0 @@
-#
-# Synchronizer settings
-#
-Sync {
-	Mode NACK {
-                #
-		# Size of the buffer that hold destroy messages for 
-		# possible resends (in bytes)
-		#
-		ResendBufferSize 262144
-
-		# Entries committed to the connection tracking table 
-		# starts with a limited timeout of N seconds until the
-		# takeover process is completed.
-		#
-		CommitTimeout 180
-
-		# Set Acknowledgement window size
-		ACKWindowSize 20
-	}
-
-	#
-	# Multicast IP and interface where messages are
-	# broadcasted (dedicated link). IMPORTANT: Make sure
-	# that iptables accepts traffic for destination
-	# 225.0.0.50, eg:
-	#
-	#	iptables -I INPUT -d 225.0.0.50 -j ACCEPT
-	#	iptables -I OUTPUT -d 225.0.0.50 -j ACCEPT
-	#
-	Multicast {
-		IPv4_address 225.0.0.50
-		IPv4_interface 192.168.100.200 # IP of dedicated link
-		Group 3780
-		Backlog 20
-	}
-
-	# Enable/Disable message checksumming
-	Checksum on
-
-	# Uncomment this if you want to replicate just certain TCP states.
-	# This option introduces a tradeoff in the replication: it reduces
-	# CPU consumption and lost messages rate at the cost of having 
-	# backup replicas that don't contain the current state that the active 
-	# replica holds. TCP states are: SYN_SENT, SYN_RECV, ESTABLISHED,
-	# FIN_WAIT, CLOSE_WAIT, LAST_ACK, TIME_WAIT, CLOSE, LISTEN.
-	# 
-	# Replicate ESTABLISHED TIME_WAIT for TCP
-}
-
-#
-# General settings
-#
-General {
-	#
-	# Number of buckets in the caches: hash table
-	#
-	HashSize 8192
-
-	#
-	# Maximum number of conntracks: 
-	# it must be >= $ cat /proc/sys/net/ipv4/netfilter/ip_conntrack_max
-	#
-	HashLimit 65535
-
-	#
-	# Logfile
-	#
-	LogFile /var/log/conntrackd.log
-
-	#
-	# Lockfile
-	# 
-	LockFile /var/lock/conntrack.lock
-
-	#
-	# Unix socket configuration
-	#
-	UNIX {
-		Path /tmp/sync.sock
-		Backlog 20
-	}
-
-	#
-	# Netlink socket buffer size
-	#
-	SocketBufferSize 262142
-
-	#
-	# Increase the socket buffer up to maximum if required
-	#
-	SocketBufferSizeMaxGrown 655355
-}
-
-#
-# Ignore traffic for a certain set of IP's: Usually
-# all the IP assigned to the firewall since local
-# traffic must be ignored, just forwarded connections
-# are worth to replicate
-#
-IgnoreTrafficFor {
-	IPv4_address 127.0.0.1 # loopback
-	IPv4_address 192.168.0.2
-	IPv4_address 192.168.1.2
-	IPv4_address 192.168.100.200 # dedicated link ip
-	IPv4_address 192.168.0.200 # virtual IP 1
-	IPv4_address 192.168.1.200 # virtual IP 2
-}
-
-#
-# Do not replicate certain protocol traffic 
-#
-IgnoreProtocol {
-	UDP
-	ICMP
-	IGMP
-	VRRP
-	# numeric numbers also valid
-}
-
-#
-# Strip NAT traffic
-#
-StripNAT
diff --git a/daemon/examples/sync/nack/node2/keepalived.conf b/daemon/examples/sync/nack/node2/keepalived.conf
deleted file mode 100644
index 41aa35b..0000000
--- a/daemon/examples/sync/nack/node2/keepalived.conf
+++ /dev/null
@@ -1,38 +0,0 @@
-vrrp_sync_group G1 {   # must be before vrrp_instance declaration
-  group {
-    VI_1
-    VI_2
-  }
-  notify_master /etc/conntrackd/script_master.sh
-  notify_backup /etc/conntrackd/script_backup.sh
-}
-
-vrrp_instance VI_1 {
-    interface eth1
-    state SLAVE
-    virtual_router_id 61
-    priority 80
-    advert_int 3
-    authentication {
-      auth_type PASS
-      auth_pass papas_con_tomate
-    }
-    virtual_ipaddress {
-        192.168.0.100   # default CIDR mask is /32
-    }
-}
-
-vrrp_instance VI_2 {
-    interface eth0
-    state SLAVE
-    virtual_router_id 62
-    priority 80
-    advert_int 3
-    authentication {
-      auth_type PASS
-      auth_pass papas_con_tomate
-    }
-    virtual_ipaddress {
-        192.168.1.100
-    }
-}
diff --git a/daemon/examples/sync/nack/script_backup.sh b/daemon/examples/sync/nack/script_backup.sh
deleted file mode 100755
index 813e375..0000000
--- a/daemon/examples/sync/nack/script_backup.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/sh
-
-/usr/sbin/conntrackd -n # request a resync from other nodes via multicast
diff --git a/daemon/examples/sync/nack/script_master.sh b/daemon/examples/sync/nack/script_master.sh
deleted file mode 100755
index ff1dbc0..0000000
--- a/daemon/examples/sync/nack/script_master.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/sh
-
-/usr/sbin/conntrackd -c # commit the cache
-/usr/sbin/conntrackd -f # flush the caches
-/usr/sbin/conntrackd -R # resync with kernel conntrack table
diff --git a/daemon/examples/sync/persistent/Makefile.am b/daemon/examples/sync/persistent/Makefile.am
deleted file mode 100644
index 6fd99b1..0000000
--- a/daemon/examples/sync/persistent/Makefile.am
+++ /dev/null
@@ -1,2 +0,0 @@
-EXTRA_DIST = script_backup.sh script_master.sh 
-SUBDIRS = node1 node2
diff --git a/daemon/examples/sync/persistent/README b/daemon/examples/sync/persistent/README
deleted file mode 100644
index 36b5989..0000000
--- a/daemon/examples/sync/persistent/README
+++ /dev/null
@@ -1 +0,0 @@
-This directory contains the files for the PERSISTENT based protocol
diff --git a/daemon/examples/sync/persistent/node1/Makefile.am b/daemon/examples/sync/persistent/node1/Makefile.am
deleted file mode 100644
index edc0ed7..0000000
--- a/daemon/examples/sync/persistent/node1/Makefile.am
+++ /dev/null
@@ -1 +0,0 @@
-EXTRA_DIST = conntrackd.conf keepalived.conf 
diff --git a/daemon/examples/sync/persistent/node1/conntrackd.conf b/daemon/examples/sync/persistent/node1/conntrackd.conf
deleted file mode 100644
index 90afeb7..0000000
--- a/daemon/examples/sync/persistent/node1/conntrackd.conf
+++ /dev/null
@@ -1,130 +0,0 @@
-#
-# Synchronizer settings
-#
-Sync {
-	Mode PERSISTENT {
-		#
-		# If a conntrack entry is not modified in <= 15 seconds, then
-		# a message is broadcasted. This mechanism is used to
-		# resynchronize nodes that just joined the multicast group
-		#
-		RefreshTime 15
-	
-		#
-		# If we don't receive a notification about the state of 
-		# an entry in the external cache after N seconds, then
-		# remove it.
-		#
-		CacheTimeout 180
-
-		#
-		# Entries committed to the connection tracking table 
-		# starts with a limited timeout of N seconds until the
-		# takeover process is completed.
-		#
-		CommitTimeout 180
-	}
-
-	#
-	# Multicast IP and interface where messages are
-	# broadcasted (dedicated link). IMPORTANT: Make sure
-	# that iptables accepts traffic for destination
-	# 225.0.0.50, eg:
-	#
-	#	iptables -I INPUT -d 225.0.0.50 -j ACCEPT
-	#	iptables -I OUTPUT -d 225.0.0.50 -j ACCEPT
-	#
-	Multicast {
-		IPv4_address 225.0.0.50
-		IPv4_interface 192.168.100.100 # IP of dedicated link
-		Group 3780
-		Backlog 20
-	}
-
-	# Enable/Disable message checksumming
-	Checksum on
-
-	# Uncomment this if you want to replicate just certain TCP states.
-	# This option introduces a tradeoff in the replication: it reduces
-	# CPU consumption and lost messages rate at the cost of having 
-	# backup replicas that don't contain the current state that the active 
-	# replica holds. TCP states are: SYN_SENT, SYN_RECV, ESTABLISHED,
-	# FIN_WAIT, CLOSE_WAIT, LAST_ACK, TIME_WAIT, CLOSE, LISTEN.
-	# 
-	# Replicate ESTABLISHED TIME_WAIT for TCP
-}
-
-#
-# General settings
-#
-General {
-	#
-	# Number of buckets in the caches: hash table
-	#
-	HashSize 8192
-
-	#
-	# Maximum number of conntracks: 
-	# it must be >= $ cat /proc/sys/net/ipv4/netfilter/ip_conntrack_max
-	#
-	HashLimit 65535
-
-	#
-	# Logfile
-	#
-	LogFile /var/log/conntrackd.log
-
-	#
-	# Lockfile
-	# 
-	LockFile /var/lock/conntrack.lock
-
-	#
-	# Unix socket configuration
-	#
-	UNIX {
-		Path /tmp/sync.sock
-		Backlog 20
-	}
-
-	#
-	# Netlink socket buffer size
-	#
-	SocketBufferSize 262142
-
-	#
-	# Increase the socket buffer up to maximum if required
-	#
-	SocketBufferSizeMaxGrown 655355
-}
-
-#
-# Ignore traffic for a certain set of IP's: Usually
-# all the IP assigned to the firewall since local
-# traffic must be ignored, just forwarded connections
-# are worth to replicate
-#
-IgnoreTrafficFor {
-	IPv4_address 127.0.0.1 # loopback
-	IPv4_address 192.168.0.1
-	IPv4_address 192.168.1.1
-	IPv4_address 192.168.100.100 # dedicated link ip
-	IPv4_address 192.168.0.100 # virtual IP 1
-	IPv4_address 192.168.1.100 # virtual IP 2
-}
-
-#
-# Do not replicate certain protocol traffic 
-#
-IgnoreProtocol {
-	UDP
-	ICMP
-	IGMP
-	VRRP
-	# numeric numbers also valid
-}
-
-#
-# Strip NAT traffic
-#
-StripNAT
diff --git a/daemon/examples/sync/persistent/node1/keepalived.conf b/daemon/examples/sync/persistent/node1/keepalived.conf
deleted file mode 100644
index 41aa35b..0000000
--- a/daemon/examples/sync/persistent/node1/keepalived.conf
+++ /dev/null
@@ -1,38 +0,0 @@
-vrrp_sync_group G1 {   # must be before vrrp_instance declaration
-  group {
-    VI_1
-    VI_2
-  }
-  notify_master /etc/conntrackd/script_master.sh
-  notify_backup /etc/conntrackd/script_backup.sh
-}
-
-vrrp_instance VI_1 {
-    interface eth1
-    state SLAVE
-    virtual_router_id 61
-    priority 80
-    advert_int 3
-    authentication {
-      auth_type PASS
-      auth_pass papas_con_tomate
-    }
-    virtual_ipaddress {
-        192.168.0.100   # default CIDR mask is /32
-    }
-}
-
-vrrp_instance VI_2 {
-    interface eth0
-    state SLAVE
-    virtual_router_id 62
-    priority 80
-    advert_int 3
-    authentication {
-      auth_type PASS
-      auth_pass papas_con_tomate
-    }
-    virtual_ipaddress {
-        192.168.1.100
-    }
-}
diff --git a/daemon/examples/sync/persistent/node2/Makefile.am b/daemon/examples/sync/persistent/node2/Makefile.am
deleted file mode 100644
index edc0ed7..0000000
--- a/daemon/examples/sync/persistent/node2/Makefile.am
+++ /dev/null
@@ -1 +0,0 @@
-EXTRA_DIST = conntrackd.conf keepalived.conf 
diff --git a/daemon/examples/sync/persistent/node2/conntrackd.conf b/daemon/examples/sync/persistent/node2/conntrackd.conf
deleted file mode 100644
index aee4a29..0000000
--- a/daemon/examples/sync/persistent/node2/conntrackd.conf
+++ /dev/null
@@ -1,130 +0,0 @@
-#
-# Synchronizer settings
-#
-Sync {
-	Mode PERSISTENT {
-		#
-		# If a conntrack entry is not modified in <= 15 seconds, then
-		# a message is broadcasted. This mechanism is used to
-		# resynchronize nodes that just joined the multicast group
-		#
-		RefreshTime 15
-	
-		#
-		# If we don't receive a notification about the state of 
-		# an entry in the external cache after N seconds, then
-		# remove it.
-		#
-		CacheTimeout 180
-
-		#
-		# Entries committed to the connection tracking table 
-		# starts with a limited timeout of N seconds until the
-		# takeover process is completed.
-		#
-		CommitTimeout 180
-	}
-
-	#
-	# Multicast IP and interface where messages are
-	# broadcasted (dedicated link). IMPORTANT: Make sure
-	# that iptables accepts traffic for destination
-	# 225.0.0.50, eg:
-	#
-	#	iptables -I INPUT -d 225.0.0.50 -j ACCEPT
-	#	iptables -I OUTPUT -d 225.0.0.50 -j ACCEPT
-	#
-	Multicast {
-		IPv4_address 225.0.0.50
-		IPv4_interface 192.168.100.200 # IP of dedicated link
-		Group 3780
-		Backlog 20
-	}
-
-	# Enable/Disable message checksumming
-	Checksum on
-
-	# Uncomment this if you want to replicate just certain TCP states.
-	# This option introduces a tradeoff in the replication: it reduces
-	# CPU consumption and lost messages rate at the cost of having 
-	# backup replicas that don't contain the current state that the active 
-	# replica holds. TCP states are: SYN_SENT, SYN_RECV, ESTABLISHED,
-	# FIN_WAIT, CLOSE_WAIT, LAST_ACK, TIME_WAIT, CLOSE, LISTEN.
-	# 
-	# Replicate ESTABLISHED TIME_WAIT for TCP
-}
-
-#
-# General settings
-#
-General {
-	#
-	# Number of buckets in the caches: hash table
-	#
-	HashSize 8192
-
-	#
-	# Maximum number of conntracks: 
-	# it must be >= $ cat /proc/sys/net/ipv4/netfilter/ip_conntrack_max
-	#
-	HashLimit 65535
-
-	#
-	# Logfile
-	#
-	LogFile /var/log/conntrackd.log
-
-	#
-	# Lockfile
-	# 
-	LockFile /var/lock/conntrack.lock
-
-	#
-	# Unix socket configuration
-	#
-	UNIX {
-		Path /tmp/sync.sock
-		Backlog 20
-	}
-
-	#
-	# Netlink socket buffer size
-	#
-	SocketBufferSize 262142
-
-	#
-	# Increase the socket buffer up to maximum if required
-	#
-	SocketBufferSizeMaxGrown 655355
-}
-
-#
-# Ignore traffic for a certain set of IP's: Usually
-# all the IP assigned to the firewall since local
-# traffic must be ignored, just forwarded connections
-# are worth to replicate
-#
-IgnoreTrafficFor {
-	IPv4_address 127.0.0.1 # loopback
-	IPv4_address 192.168.0.2
-	IPv4_address 192.168.1.2
-	IPv4_address 192.168.100.200 # dedicated link ip
-	IPv4_address 192.168.0.200 # virtual IP 1
-	IPv4_address 192.168.1.200 # virtual IP 2
-}
-
-#
-# Do not replicate certain protocol traffic 
-#
-IgnoreProtocol {
-	UDP
-	ICMP
-	IGMP
-	VRRP
-	# numeric numbers also valid
-}
-
-#
-# Strip NAT traffic
-#
-StripNAT
diff --git a/daemon/examples/sync/persistent/node2/keepalived.conf b/daemon/examples/sync/persistent/node2/keepalived.conf
deleted file mode 100644
index 41aa35b..0000000
--- a/daemon/examples/sync/persistent/node2/keepalived.conf
+++ /dev/null
@@ -1,38 +0,0 @@
-vrrp_sync_group G1 {   # must be before vrrp_instance declaration
-  group {
-    VI_1
-    VI_2
-  }
-  notify_master /etc/conntrackd/script_master.sh
-  notify_backup /etc/conntrackd/script_backup.sh
-}
-
-vrrp_instance VI_1 {
-    interface eth1
-    state SLAVE
-    virtual_router_id 61
-    priority 80
-    advert_int 3
-    authentication {
-      auth_type PASS
-      auth_pass papas_con_tomate
-    }
-    virtual_ipaddress {
-        192.168.0.100   # default CIDR mask is /32
-    }
-}
-
-vrrp_instance VI_2 {
-    interface eth0
-    state SLAVE
-    virtual_router_id 62
-    priority 80
-    advert_int 3
-    authentication {
-      auth_type PASS
-      auth_pass papas_con_tomate
-    }
-    virtual_ipaddress {
-        192.168.1.100
-    }
-}
diff --git a/daemon/examples/sync/persistent/script_backup.sh b/daemon/examples/sync/persistent/script_backup.sh
deleted file mode 100755
index 8ea2ad8..0000000
--- a/daemon/examples/sync/persistent/script_backup.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/sh
-
-/usr/sbin/conntrackd -B
diff --git a/daemon/examples/sync/persistent/script_master.sh b/daemon/examples/sync/persistent/script_master.sh
deleted file mode 100755
index 70c26c9..0000000
--- a/daemon/examples/sync/persistent/script_master.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/sh
-
-/usr/sbin/conntrackd -c
-/usr/sbin/conntrackd -R