server.py: handle (throw away) ECONNREFUSED from the DNS server.

This might happen occasionally on a flakey network.  Reported by Ed Maste.

.gitignore

@@ -1,3 +1,6 @@
 *.pyc
 *~
 *.8
+/.do_built
+/.do_built.dir
+/.redo

Makefile

@@ -1,19 +1,10 @@
-PANDOC:=$(shell \
-	if pandoc </dev/null 2>/dev/null; then \
-		echo pandoc; \
-	else \
-		echo "Warning: pandoc not installed; can't generate manpages." >&2; \
-		echo '@echo Skipping: pandoc'; \
-	fi)
+all:
 
-default: all
+Makefile:
+	@
 
-all: sshuttle.8
+%: FORCE
+	+./do $@
 
-sshuttle.8: sshuttle.md
+.PHONY: FORCE
 
-%.8: %.md
-	$(PANDOC) -s -r markdown -w man -o $@ $<
-
-clean:
-	rm -f *~ */*~ .*~ */.*~ *.8 *.tmp */*.tmp *.pyc */*.pyc

README.md

@@ -1,3 +1,14 @@
+
+WARNING:
+On MacOS 10.6 (at least up to 10.6.6), your network will
+stop responding about 10 minutes after the first time you
+start sshuttle, because of a MacOS kernel bug relating to
+arp and the net.inet.ip.scopedroute sysctl.  To fix it,
+just switch your wireless off and on. Sshuttle makes the
+kernel setting it changes permanent, so this won't happen
+again, even after a reboot.
+
+
 sshuttle: where transparent proxy meets VPN meets ssh
 =====================================================
 

all.do

@@ -0,0 +1,11 @@
+exec >&2
+UI=
+[ "$(uname)" = "Darwin" ] && UI=ui-macos/all
+redo-ifchange sshuttle.8 $UI
+
+echo
+echo "What now?"
+[ -z "$UI" ] || echo "- Try the MacOS GUI: open ui-macos/Sshuttle*.app"
+echo "- Run sshuttle: ./sshuttle --dns -r HOSTNAME 0/0"
+echo "- Read the README: less README.md"
+echo "- Read the man page: less sshuttle.md"

clean.do

@@ -0,0 +1,2 @@
+redo ui-macos/clean
+rm -f *~ */*~ .*~ */.*~ *.8 *.tmp */*.tmp *.pyc */*.pyc

client.py

@@ -102,7 +102,7 @@ class FirewallClient:
         self.subnets_include = subnets_include
         self.subnets_exclude = subnets_exclude
         self.dnsport = dnsport
-        argvbase = ([sys.argv[0]] +
+        argvbase = ([sys.argv[1], sys.argv[0], sys.argv[1]] +
                     ['-v'] * (helpers.verbose or 0) +
                     ['--firewall', str(port), str(dnsport)])
         if ssyslog._p:
@@ -273,6 +273,10 @@ def _main(listener, fw, ssh_cmd, remotename, python, latency_control,
             sock.close()
             return
         chan = mux.next_channel()
+        if not chan:
+            log('warning: too many open channels.  Discarded connection.\n')
+            sock.close()
+            return
         mux.send(chan, ssnet.CMD_CONNECT, '%s,%s' % dstip)
         outwrap = MuxWrapper(mux, chan)
         handlers.append(Proxy(SockWrapper(sock, sock), outwrap))

default.8.do

@@ -0,0 +1,7 @@
+exec >&2
+if pandoc </dev/null 2>/dev/null; then
+	pandoc -s -r markdown -w man -o $3 $1.md
+else
+	echo "Warning: pandoc not installed; can't generate manpages."
+	redo-always
+fi

do

@@ -0,0 +1,150 @@
+#!/bin/sh
+#
+# A minimal alternative to djb redo that doesn't support incremental builds.
+# For the full version, visit http://github.com/apenwarr/redo
+#
+# The author disclaims copyright to this source file and hereby places it in
+# the public domain. (2010 12 14)
+#
+
+# By default, no output coloring.
+GREEN=""
+BOLD=""
+PLAIN=""
+
+if [ -n "$TERM" -a "$TERM" != "dumb" ] && tty <&2 >/dev/null 2>&1; then
+	GREEN="$(printf '\033[32m')"
+	BOLD="$(printf '\033[1m')"
+	PLAIN="$(printf '\033[m')"
+fi
+
+_dirsplit()
+{
+	base=${1##*/}
+	dir=${1%$base}
+}
+
+_dirsplit "$0"
+export REDO=$(cd "${dir:-.}" && echo "$PWD/$base")
+
+DO_TOP=
+if [ -z "$DO_BUILT" ]; then
+	DO_TOP=1
+	[ -n "$*" ] || set all  # only toplevel redo has a default target
+	export DO_BUILT=$PWD/.do_built
+	: >>"$DO_BUILT"
+	echo "Removing previously built files..." >&2
+	sort -u "$DO_BUILT" | tee "$DO_BUILT.new" |
+	while read f; do printf "%s\0%s.did\0" "$f" "$f"; done |
+	xargs -0 rm -f 2>/dev/null
+	mv "$DO_BUILT.new" "$DO_BUILT"
+	DO_PATH=$DO_BUILT.dir
+	export PATH=$DO_PATH:$PATH
+	rm -rf "$DO_PATH"
+	mkdir "$DO_PATH"
+	for d in redo redo-ifchange; do
+		ln -s "$REDO" "$DO_PATH/$d";
+	done
+	[ -e /bin/true ] && TRUE=/bin/true || TRUE=/usr/bin/true
+	for d in redo-ifcreate redo-stamp redo-always; do 
+		ln -s $TRUE "$DO_PATH/$d";
+	done
+fi
+
+
+_find_dofile_pwd()
+{
+	DOFILE=default.$1.do
+	while :; do
+		DOFILE=default.${DOFILE#default.*.}
+		[ -e "$DOFILE" -o "$DOFILE" = default.do ] && break
+	done
+	EXT=${DOFILE#default}
+	EXT=${EXT%.do}
+	BASE=${1%$EXT}
+}
+
+
+_find_dofile()
+{
+	PREFIX=
+	while :; do
+		_find_dofile_pwd "$1"
+		[ -e "$DOFILE" ] && break
+		[ "$PWD" = "/" ] && break
+		TARGET=${PWD##*/}/$TARGET
+		PREFIX=${PWD##*/}/$PREFIX
+		cd ..
+	done
+	BASE=$PREFIX$BASE
+}
+
+
+_run_dofile()
+{
+	export DO_DEPTH="$DO_DEPTH  "
+	export REDO_TARGET=$PWD/$TARGET
+	set -e
+	read line1 <"$PWD/$DOFILE"
+	cmd=${line1#"#!/"}
+	if [ "$cmd" != "$line1" ]; then
+		/$cmd "$PWD/$DOFILE" "$@" >"$TARGET.tmp2"
+	else
+		. "$PWD/$DOFILE" >"$TARGET.tmp2"
+	fi
+}
+
+
+_do()
+{
+	DIR=$1
+	TARGET=$2
+	if [ ! -e "$TARGET" ] || [ -e "$TARGET/." -a ! -e "$TARGET.did" ]; then
+		printf '%sdo  %s%s%s%s\n' \
+			"$GREEN" "$DO_DEPTH" "$BOLD" "$DIR$TARGET" "$PLAIN" >&2
+		echo "$PWD/$TARGET" >>"$DO_BUILT"
+		DOFILE=$TARGET.do
+		BASE=$TARGET
+		EXT=
+		[ -e "$TARGET.do" ] || _find_dofile "$TARGET"
+		if [ ! -e "$DOFILE" ]; then
+			echo "do: $TARGET: no .do file" >&2
+			return 1
+		fi
+		[ ! -e "$DO_BUILD" ] || : >>"$TARGET.did"
+		( _run_dofile "$BASE" "$EXT" "$TARGET.tmp" )
+		RV=$?
+		if [ $RV != 0 ]; then
+			printf "do: %s%s\n" "$DO_DEPTH" \
+				"$DIR$TARGET: got exit code $RV" >&2
+			rm -f "$TARGET.tmp" "$TARGET.tmp2"
+			return $RV
+		fi
+		mv "$TARGET.tmp" "$TARGET" 2>/dev/null ||
+		! test -s "$TARGET.tmp2" ||
+		mv "$TARGET.tmp2" "$TARGET" 2>/dev/null
+		rm -f "$TARGET.tmp2"
+	else
+		echo "do  $DO_DEPTH$TARGET exists." >&2
+	fi
+}
+
+
+redo()
+{
+	for i in "$@"; do
+		_dirsplit "$i"
+		( cd "$dir" && _do "$dir" "$base" ) || return 1
+	done
+}
+
+
+set -e
+redo "$@"
+
+if [ -n "$DO_TOP" ]; then
+	echo "Removing stamp files..." >&2
+	[ ! -e "$DO_BUILT" ] ||
+	while read f; do printf "%s.did\0" "$f"; done <"$DO_BUILT" |
+	xargs -0 rm -f 2>/dev/null
+fi

firewall.py

@@ -7,6 +7,13 @@ from helpers import *
 IPPROTO_DIVERT = 254
 
 
+def nonfatal(func, *args):
+    try:
+        func(*args)
+    except Fatal, e:
+        log('error: %s\n' % e)
+
+
 def ipt_chain_exists(name):
     argv = ['iptables', '-t', 'nat', '-nL']
     p = ssubprocess.Popen(argv, stdout = ssubprocess.PIPE)
@@ -57,9 +64,9 @@ def do_iptables(port, dnsport, subnets):
 
     # basic cleanup/setup of chains
     if ipt_chain_exists(chain):
-        ipt('-D', 'OUTPUT', '-j', chain)
-        ipt('-D', 'PREROUTING', '-j', chain)
-        ipt('-F', chain)
+        nonfatal(ipt, '-D', 'OUTPUT', '-j', chain)
+        nonfatal(ipt, '-D', 'PREROUTING', '-j', chain)
+        nonfatal(ipt, '-F', chain)
         ipt('-X', chain)
 
     if subnets or dnsport:
@@ -131,11 +138,11 @@ def _fill_oldctls(prefix):
 def _sysctl_set(name, val):
     argv = ['sysctl', '-w', '%s=%s' % (name, val)]
     debug1('>> %s\n' % ' '.join(argv))
-    rv = ssubprocess.call(argv, stdout = open('/dev/null', 'w'))
+    return ssubprocess.call(argv, stdout = open('/dev/null', 'w'))
 
 
 _changedctls = []
-def sysctl_set(name, val):
+def sysctl_set(name, val, permanent=False):
     PREFIX = 'net.inet.ip'
     assert(name.startswith(PREFIX + '.'))
     val = str(val)
@@ -143,11 +150,20 @@ def sysctl_set(name, val):
         _fill_oldctls(PREFIX)
     if not (name in _oldctls):
         debug1('>> No such sysctl: %r\n' % name)
-        return
+        return False
     oldval = _oldctls[name]
     if val != oldval:
+        rv = _sysctl_set(name, val)
+        if rv==0 and permanent:
+            debug1('>>   ...saving permanently in /etc/sysctl.conf\n')
+            f = open('/etc/sysctl.conf', 'a')
+            f.write('\n'
+                    '# Added by sshuttle\n'
+                    '%s=%s\n' % (name, val))
+            f.close()
+        else:
             _changedctls.append(name)
-        return _sysctl_set(name, val)
+        return True
 
 
 def _udp_unpack(p):
@@ -206,7 +222,18 @@ def do_ipfw(port, dnsport, subnets):
 
     if subnets or dnsport:
         sysctl_set('net.inet.ip.fw.enable', 1)
-        sysctl_set('net.inet.ip.scopedroute', 0)
+        changed = sysctl_set('net.inet.ip.scopedroute', 0, permanent=True)
+        if changed:
+            log("\n"
+                "        WARNING: ONE-TIME NETWORK DISRUPTION:\n"
+                "        =====================================\n"
+                "sshuttle has changed a MacOS kernel setting to work around\n"
+                "a bug in MacOS 10.6.  This will cause your network to drop\n"
+                "within 5-10 minutes unless you restart your network\n"
+                "interface (change wireless networks or unplug/plug the\n"
+                "ethernet port) NOW, then restart sshuttle.  The fix is\n"
+                "permanent; you only have to do this once.\n\n")
+            sys.exit(1)
 
         ipfw('add', sport, 'check-state', 'ip',
              'from', 'any', 'to', 'any')

hostwatch.py

@@ -13,7 +13,11 @@ _nmb_ok = True
 _smb_ok = True
 hostnames = {}
 queue = {}
-null = open('/dev/null', 'rb+')
+try:
+    null = open('/dev/null', 'wb')
+except IOError, e:
+    log('warning: %s\n' % e)
+    null = os.popen("sh -c 'while read x; do :; done'", 'wb', 4096)
 
 
 def _is_ip(s):

main.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 import sys, os, re
 import helpers, options, client, server, firewall, hostwatch
 import compat.ssubprocess as ssubprocess
@@ -55,13 +54,14 @@ l,listen=  transproxy to this ip address and port number [127.0.0.1:0]
 H,auto-hosts scan for remote hostnames and update local /etc/hosts
 N,auto-nets  automatically determine subnets to route
 dns        capture local DNS requests and forward to the remote DNS server
-python=    path to python interpreter on the remote server [python]
+python=    path to python interpreter on the remote server
 r,remote=  ssh hostname (and optional username) of remote sshuttle server
 x,exclude= exclude this subnet (can be used more than once)
 v,verbose  increase debug message verbosity
 e,ssh-cmd= the command to use to connect to the remote [ssh]
 seed-hosts= with -H, use these hostnames for initial scan (comma-separated)
 no-latency-control  sacrifice latency to improve bandwidth benchmarks
+wrap=      restart counting channel numbers after this number (for testing)
 D,daemon   run in the background as a daemon
 syslog     send log messages to syslog (default if you use --daemon)
 pidfile=   pidfile name (only if using --daemon) [./sshuttle.pid]
@@ -70,10 +70,13 @@ firewall   (internal use only)
 hostwatch  (internal use only)
 """
 o = options.Options(optspec)
-(opt, flags, extra) = o.parse(sys.argv[1:])
+(opt, flags, extra) = o.parse(sys.argv[2:])
 
 if opt.daemon:
     opt.syslog = 1
+if opt.wrap:
+    import ssnet
+    ssnet.MAX_CHANNEL = int(opt.wrap)
 helpers.verbose = opt.verbose
 
 try:

server.py

@@ -119,7 +119,14 @@ class DnsProxy(Handler):
         self.sock.send(request)
 
     def callback(self):
+        try:
             data = self.sock.recv(4096)
+        except socket.error, e:
+            if e.args[0] == errno.ECONNREFUSED:
+                debug2('DNS response: ignoring ECONNREFUSED.\n')
+                return  # might have been spurious; wait for a real answer
+            else:
+                raise
         debug2('DNS response: %d bytes\n' % len(data))
         self.mux.send(self.chan, ssnet.CMD_DNS_RESPONSE, data)
         self.ok = False

ssh.py

@@ -73,16 +73,23 @@ def connect(ssh_cmd, rhostport, python, stderr, options):
 
         
     if not rhost:
-        argv = [python, '-c', pyscript]
+        # ignore the --python argument when running locally; we already know
+        # which python version works.
+        argv = [sys.argv[1], '-c', pyscript]
     else:
         if ssh_cmd:
             sshl = ssh_cmd.split(' ')
         else:
             sshl = ['ssh']
+        if python:
+            pycmd = "'%s' -c '%s'" % (python, pyscript)
+        else:
+            pycmd = ("P=python2; $P -V 2>/dev/null || P=python; "
+                     "\"$P\" -c '%s'") % pyscript
         argv = (sshl + 
                 portl + 
                 ipv6flag + 
-                [rhost, '--', "'%s' -c '%s'" % (python, pyscript)])
+                [rhost, '--', pycmd])
     (s1,s2) = socket.socketpair()
     def setup():
         # runs in the child process

sshuttle

@@ -1 +0,0 @@
-main.py

sshuttle

@@ -0,0 +1,7 @@
+#!/bin/sh
+DIR=$(dirname "$0")
+if python2 -V 2>/dev/null; then
+	exec python2 "$DIR/main.py" python2 "$@"
+else
+	exec python "$DIR/main.py" python "$@"
+fi

sshuttle.md

@@ -253,6 +253,17 @@ between the two separate streams, so a tcp-based tunnel is
 fine.
 
 
+# BUGS
+
+On MacOS 10.6 (at least up to 10.6.6), your network will
+stop responding about 10 minutes after the first time you
+start sshuttle, because of a MacOS kernel bug relating to
+arp and the net.inet.ip.scopedroute sysctl.  To fix it,
+just switch your wireless off and on. Sshuttle makes the
+kernel setting it changes permanent, so this won't happen
+again, even after a reboot.
+
+
 # SEE ALSO
 
 `ssh`(1), `python`(1)

ssnet.py

@@ -2,6 +2,8 @@ import struct, socket, errno, select
 if not globals().get('skip_imports'):
     from helpers import *
 
+MAX_CHANNEL = 65535
+    
 # these don't exist in the socket module in python 2.3!
 SHUT_RD = 0
 SHUT_WR = 1
@@ -300,7 +302,7 @@ class Mux(Handler):
         # channel 0 is special, so we never allocate it
         for timeout in xrange(1024):
             self.chani += 1
-            if self.chani > 65535:
+            if self.chani > MAX_CHANNEL:
                 self.chani = 1
             if not self.channels.get(self.chani):
                 return self.chani

stresstest.py

@@ -0,0 +1,86 @@
+#!/usr/bin/env python
+import sys, os, socket, select, struct, time
+
+listener = socket.socket()
+listener.bind(('127.0.0.1', 0))
+listener.listen(500)
+
+servers = []
+clients = []
+remain = {}
+
+NUMCLIENTS = 50
+count = 0
+
+
+while 1:
+    if len(clients) < NUMCLIENTS:
+        c = socket.socket()
+        c.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+        c.bind(('0.0.0.0', 0))
+        c.connect(listener.getsockname())
+        count += 1
+        if count >= 16384:
+            count = 1
+        print 'cli CREATING %d' % count
+        b = struct.pack('I', count) + 'x'*count
+        remain[c] = count
+        print 'cli  >> %r' % len(b)
+        c.send(b)
+        c.shutdown(socket.SHUT_WR)
+        clients.append(c)
+        r = [listener]
+        time.sleep(0.1)
+    else:
+        r = [listener]+servers+clients
+    print 'select(%d)' % len(r)
+    r,w,x = select.select(r, [], [], 5)
+    assert(r)
+    for i in r:
+        if i == listener:
+            s,addr = listener.accept()
+            servers.append(s)
+        elif i in servers:
+            b = i.recv(4096)
+            print 'srv <<  %r' % len(b)
+            if not i in remain:
+                assert(len(b) >= 4)
+                want = struct.unpack('I', b[:4])[0]
+                b = b[4:]
+                #i.send('y'*want)
+            else:
+                want = remain[i]
+            if want < len(b):
+                print 'weird wanted %d bytes, got %d: %r' % (want, len(b), b)
+                assert(want >= len(b))
+            want -= len(b)
+            remain[i] = want
+            if not b:  # EOF
+                if want:
+                    print 'weird: eof but wanted %d more' % want
+                    assert(want == 0)
+                i.close()
+                servers.remove(i)
+                del remain[i]
+            else:
+                print 'srv  >> %r' % len(b)
+                i.send('y'*len(b))
+                if not want:
+                    i.shutdown(socket.SHUT_WR)
+        elif i in clients:
+            b = i.recv(4096)
+            print 'cli <<  %r' % len(b)
+            want = remain[i]
+            if want < len(b):
+                print 'weird wanted %d bytes, got %d: %r' % (want, len(b), b)
+                assert(want >= len(b))
+            want -= len(b)
+            remain[i] = want
+            if not b:  # EOF
+                if want:
+                    print 'weird: eof but wanted %d more' % want
+                    assert(want == 0)
+                i.close()
+                clients.remove(i)
+                del remain[i]
+listener.accept()

ui-macos/MainMenu.xib

@@ -2,17 +2,17 @@
 <archive type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="7.10">
 	<data>
 		<int key="IBDocument.SystemTarget">1060</int>
-		<string key="IBDocument.SystemVersion">10H574</string>
+		<string key="IBDocument.SystemVersion">10J567</string>
 		<string key="IBDocument.InterfaceBuilderVersion">762</string>
 		<string key="IBDocument.AppKitVersion">1038.35</string>
-		<string key="IBDocument.HIToolboxVersion">461.00</string>
+		<string key="IBDocument.HIToolboxVersion">462.00</string>
 		<object class="NSMutableDictionary" key="IBDocument.PluginVersions">
 			<string key="NS.key.0">com.apple.InterfaceBuilder.CocoaPlugin</string>
 			<string key="NS.object.0">762</string>
 		</object>
 		<object class="NSMutableArray" key="IBDocument.EditedObjectIDs">
 			<bool key="EncodedWithXMLCoder">YES</bool>
-			<integer value="233"/>
+			<integer value="237"/>
 		</object>
 		<object class="NSArray" key="IBDocument.PluginDependencies">
 			<bool key="EncodedWithXMLCoder">YES</bool>
@@ -41,9 +41,9 @@
 				<string key="NSClassName">NSApplication</string>
 			</object>
 			<object class="NSWindowTemplate" id="411825121">
-				<int key="NSWindowStyleMask">3</int>
+				<int key="NSWindowStyleMask">11</int>
 				<int key="NSWindowBacking">2</int>
-				<string key="NSWindowRect">{{157, 116}, {611, 369}}</string>
+				<string key="NSWindowRect">{{324, 171}, {611, 469}}</string>
 				<int key="NSWTFlags">1886913536</int>
 				<string key="NSWindowTitle">Sshuttle VPN Preferences</string>
 				<string key="NSWindowClass">NSWindow</string>
@@ -51,16 +51,16 @@
 					<characters key="NS.bytes">View</characters>
 				</object>
 				<string key="NSWindowContentMaxSize">{1.79769e+308, 1.79769e+308}</string>
-				<string key="NSWindowContentMinSize">{213, 107}</string>
+				<string key="NSWindowContentMinSize">{611, 469}</string>
 				<object class="NSView" key="NSWindowView" id="174067038">
 					<reference key="NSNextResponder"/>
-					<int key="NSvFlags">256</int>
+					<int key="NSvFlags">274</int>
 					<object class="NSMutableArray" key="NSSubviews">
 						<bool key="EncodedWithXMLCoder">YES</bool>
 						<object class="NSTabView" id="389252804">
 							<reference key="NSNextResponder" ref="174067038"/>
-							<int key="NSvFlags">12</int>
-							<string key="NSFrame">{{-8, -10}, {627, 373}}</string>
+							<int key="NSvFlags">18</int>
+							<string key="NSFrame">{{-8, -10}, {627, 473}}</string>
 							<reference key="NSSuperview" ref="174067038"/>
 							<int key="NSViewLayerContentsRedrawPolicy">2</int>
 							<object class="NSMutableArray" key="NSTabViewItems">
@@ -68,13 +68,13 @@
 								<object class="NSTabViewItem" id="762265164">
 									<string key="NSIdentifier">1</string>
 									<object class="NSView" key="NSView" id="60314308">
-										<nil key="NSNextResponder"/>
-										<int key="NSvFlags">256</int>
+										<reference key="NSNextResponder" ref="389252804"/>
+										<int key="NSvFlags">274</int>
 										<object class="NSMutableArray" key="NSSubviews">
 											<bool key="EncodedWithXMLCoder">YES</bool>
 											<object class="NSButton" id="26015719">
 												<reference key="NSNextResponder" ref="60314308"/>
-												<int key="NSvFlags">268</int>
+												<int key="NSvFlags">292</int>
 												<string key="NSFrame">{{17, 17}, {25, 23}}</string>
 												<reference key="NSSuperview" ref="60314308"/>
 												<int key="NSViewLayerContentsRedrawPolicy">2</int>
@@ -103,7 +103,7 @@
 											</object>
 											<object class="NSButton" id="244571541">
 												<reference key="NSNextResponder" ref="60314308"/>
-												<int key="NSvFlags">268</int>
+												<int key="NSvFlags">292</int>
 												<string key="NSFrame">{{41, 17}, {25, 23}}</string>
 												<reference key="NSSuperview" ref="60314308"/>
 												<int key="NSViewLayerContentsRedrawPolicy">2</int>
@@ -128,7 +128,7 @@
 											</object>
 											<object class="NSScrollView" id="776974664">
 												<reference key="NSNextResponder" ref="60314308"/>
-												<int key="NSvFlags">268</int>
+												<int key="NSvFlags">274</int>
 												<object class="NSMutableArray" key="NSSubviews">
 													<bool key="EncodedWithXMLCoder">YES</bool>
 													<object class="NSClipView" id="8658574">
@@ -139,7 +139,7 @@
 															<object class="NSTableView" id="849333466">
 																<reference key="NSNextResponder" ref="8658574"/>
 																<int key="NSvFlags">256</int>
-																<string key="NSFrameSize">{224, 282}</string>
+																<string key="NSFrameSize">{224, 372}</string>
 																<reference key="NSSuperview" ref="8658574"/>
 																<int key="NSViewLayerContentsRedrawPolicy">2</int>
 																<bool key="NSEnabled">YES</bool>
@@ -275,7 +275,7 @@
 																<int key="NSTableViewDraggingDestinationStyle">0</int>
 															</object>
 														</object>
-														<string key="NSFrame">{{1, 1}, {223, 282}}</string>
+														<string key="NSFrame">{{1, 1}, {223, 372}}</string>
 														<reference key="NSSuperview" ref="776974664"/>
 														<reference key="NSNextKeyView" ref="849333466"/>
 														<int key="NSViewLayerContentsRedrawPolicy">2</int>
@@ -306,7 +306,7 @@
 														<double key="NSPercent">0.91812865497076024</double>
 													</object>
 												</object>
-												<string key="NSFrame">{{17, 40}, {225, 284}}</string>
+												<string key="NSFrame">{{17, 40}, {225, 374}}</string>
 												<reference key="NSSuperview" ref="60314308"/>
 												<reference key="NSNextKeyView" ref="8658574"/>
 												<int key="NSViewLayerContentsRedrawPolicy">2</int>
@@ -318,8 +318,8 @@
 											</object>
 											<object class="NSButton" id="538356055">
 												<reference key="NSNextResponder" ref="60314308"/>
-												<int key="NSvFlags">268</int>
-												<string key="NSFrame">{{296, 254}, {273, 18}}</string>
+												<int key="NSvFlags">265</int>
+												<string key="NSFrame">{{291, 356}, {273, 18}}</string>
 												<reference key="NSSuperview" ref="60314308"/>
 												<int key="NSViewLayerContentsRedrawPolicy">2</int>
 												<bool key="NSEnabled">YES</bool>
@@ -341,8 +341,8 @@
 											</object>
 											<object class="NSTextField" id="889877302">
 												<reference key="NSNextResponder" ref="60314308"/>
-												<int key="NSvFlags">268</int>
-												<string key="NSFrame">{{341, 292}, {249, 22}}</string>
+												<int key="NSvFlags">265</int>
+												<string key="NSFrame">{{341, 392}, {249, 22}}</string>
 												<reference key="NSSuperview" ref="60314308"/>
 												<int key="NSViewLayerContentsRedrawPolicy">2</int>
 												<bool key="NSEnabled">YES</bool>
@@ -369,8 +369,8 @@
 											</object>
 											<object class="NSPopUpButton" id="801412726">
 												<reference key="NSNextResponder" ref="60314308"/>
-												<int key="NSvFlags">268</int>
-												<string key="NSFrame">{{273, 185}, {320, 26}}</string>
+												<int key="NSvFlags">265</int>
+												<string key="NSFrame">{{273, 193}, {320, 26}}</string>
 												<reference key="NSSuperview" ref="60314308"/>
 												<int key="NSViewLayerContentsRedrawPolicy">2</int>
 												<bool key="NSEnabled">YES</bool>
@@ -440,10 +440,77 @@
 													<int key="NSArrowPosition">2</int>
 												</object>
 											</object>
+											<object class="NSPopUpButton" id="451647466">
+												<reference key="NSNextResponder" ref="60314308"/>
+												<int key="NSvFlags">265</int>
+												<string key="NSFrame">{{273, 257}, {320, 26}}</string>
+												<reference key="NSSuperview" ref="60314308"/>
+												<int key="NSViewLayerContentsRedrawPolicy">2</int>
+												<bool key="NSEnabled">YES</bool>
+												<object class="NSPopUpButtonCell" key="NSCell" id="970826243">
+													<int key="NSCellFlags">-2076049856</int>
+													<int key="NSCellFlags2">2048</int>
+													<reference key="NSSupport" ref="696441443"/>
+													<reference key="NSControlView" ref="451647466"/>
+													<int key="NSButtonFlags">112869631</int>
+													<int key="NSButtonFlags2">129</int>
+													<string key="NSAlternateContents"/>
+													<string key="NSKeyEquivalent"/>
+													<int key="NSPeriodicDelay">400</int>
+													<int key="NSPeriodicInterval">75</int>
+													<object class="NSMenuItem" key="NSMenuItem" id="903120255">
+														<reference key="NSMenu" ref="790880658"/>
+														<string key="NSTitle">Choose one</string>
+														<string key="NSKeyEquiv"/>
+														<int key="NSKeyEquivModMask">1048576</int>
+														<int key="NSMnemonicLoc">2147483647</int>
+														<int key="NSState">1</int>
+														<reference key="NSOnImage" ref="615977438"/>
+														<reference key="NSMixedImage" ref="445532764"/>
+														<string key="NSAction">_popUpItemAction:</string>
+														<reference key="NSTarget" ref="970826243"/>
+													</object>
+													<bool key="NSMenuItemRespectAlignment">YES</bool>
+													<object class="NSMenu" key="NSMenu" id="790880658">
+														<string key="NSTitle">OtherViews</string>
+														<object class="NSMutableArray" key="NSMenuItems">
+															<bool key="EncodedWithXMLCoder">YES</bool>
+															<reference ref="903120255"/>
+															<object class="NSMenuItem" id="778262848">
+																<reference key="NSMenu" ref="790880658"/>
+																<string key="NSTitle">Item 2</string>
+																<string key="NSKeyEquiv"/>
+																<int key="NSKeyEquivModMask">1048576</int>
+																<int key="NSMnemonicLoc">2147483647</int>
+																<reference key="NSOnImage" ref="615977438"/>
+																<reference key="NSMixedImage" ref="445532764"/>
+																<string key="NSAction">_popUpItemAction:</string>
+																<reference key="NSTarget" ref="970826243"/>
+															</object>
+															<object class="NSMenuItem" id="195135854">
+																<reference key="NSMenu" ref="790880658"/>
+																<string key="NSTitle">Item 3</string>
+																<string key="NSKeyEquiv"/>
+																<int key="NSKeyEquivModMask">1048576</int>
+																<int key="NSMnemonicLoc">2147483647</int>
+																<reference key="NSOnImage" ref="615977438"/>
+																<reference key="NSMixedImage" ref="445532764"/>
+																<string key="NSAction">_popUpItemAction:</string>
+																<reference key="NSTarget" ref="970826243"/>
+															</object>
+														</object>
+														<reference key="NSMenuFont" ref="696441443"/>
+													</object>
+													<int key="NSPreferredEdge">1</int>
+													<bool key="NSUsesItemFromMenu">YES</bool>
+													<bool key="NSAltersState">YES</bool>
+													<int key="NSArrowPosition">2</int>
+												</object>
+											</object>
 											<object class="NSTextField" id="753545988">
 												<reference key="NSNextResponder" ref="60314308"/>
-												<int key="NSvFlags">268</int>
-												<string key="NSFrame">{{261, 294}, {75, 17}}</string>
+												<int key="NSvFlags">265</int>
+												<string key="NSFrame">{{261, 394}, {75, 17}}</string>
 												<reference key="NSSuperview" ref="60314308"/>
 												<int key="NSViewLayerContentsRedrawPolicy">2</int>
 												<bool key="NSEnabled">YES</bool>
@@ -459,8 +526,8 @@
 											</object>
 											<object class="NSTextField" id="840157770">
 												<reference key="NSNextResponder" ref="60314308"/>
-												<int key="NSvFlags">268</int>
-												<string key="NSFrame">{{261, 217}, {105, 17}}</string>
+												<int key="NSvFlags">265</int>
+												<string key="NSFrame">{{261, 226}, {105, 17}}</string>
 												<reference key="NSSuperview" ref="60314308"/>
 												<int key="NSViewLayerContentsRedrawPolicy">2</int>
 												<bool key="NSEnabled">YES</bool>
@@ -474,9 +541,26 @@
 													<reference key="NSTextColor" ref="399750419"/>
 												</object>
 											</object>
+											<object class="NSTextField" id="459566505">
+												<reference key="NSNextResponder" ref="60314308"/>
+												<int key="NSvFlags">265</int>
+												<string key="NSFrame">{{261, 290}, {105, 17}}</string>
+												<reference key="NSSuperview" ref="60314308"/>
+												<int key="NSViewLayerContentsRedrawPolicy">2</int>
+												<bool key="NSEnabled">YES</bool>
+												<object class="NSTextFieldCell" key="NSCell" id="534245320">
+													<int key="NSCellFlags">68288064</int>
+													<int key="NSCellFlags2">272630784</int>
+													<string key="NSContents">Optimize for:</string>
+													<reference key="NSSupport" ref="696441443"/>
+													<reference key="NSControlView" ref="459566505"/>
+													<reference key="NSBackgroundColor" ref="965844506"/>
+													<reference key="NSTextColor" ref="399750419"/>
+												</object>
+											</object>
 											<object class="NSButton" id="962924480">
 												<reference key="NSNextResponder" ref="60314308"/>
-												<int key="NSvFlags">268</int>
+												<int key="NSvFlags">289</int>
 												<string key="NSFrame">{{276, 40}, {25, 23}}</string>
 												<reference key="NSSuperview" ref="60314308"/>
 												<int key="NSViewLayerContentsRedrawPolicy">2</int>
@@ -498,7 +582,7 @@
 											</object>
 											<object class="NSButton" id="705215911">
 												<reference key="NSNextResponder" ref="60314308"/>
-												<int key="NSvFlags">268</int>
+												<int key="NSvFlags">289</int>
 												<string key="NSFrame">{{300, 40}, {25, 23}}</string>
 												<reference key="NSSuperview" ref="60314308"/>
 												<int key="NSViewLayerContentsRedrawPolicy">2</int>
@@ -520,7 +604,7 @@
 											</object>
 											<object class="NSScrollView" id="610703353">
 												<reference key="NSNextResponder" ref="60314308"/>
-												<int key="NSvFlags">268</int>
+												<int key="NSvFlags">273</int>
 												<object class="NSMutableArray" key="NSSubviews">
 													<bool key="EncodedWithXMLCoder">YES</bool>
 													<object class="NSClipView" id="844110079">
@@ -531,7 +615,7 @@
 															<object class="NSTableView" id="714838401">
 																<reference key="NSNextResponder" ref="844110079"/>
 																<int key="NSvFlags">256</int>
-																<string key="NSFrameSize">{312, 95}</string>
+																<string key="NSFrameSize">{312, 102}</string>
 																<reference key="NSSuperview" ref="844110079"/>
 																<int key="NSViewLayerContentsRedrawPolicy">2</int>
 																<bool key="NSEnabled">YES</bool>
@@ -623,7 +707,7 @@
 																<int key="NSTableViewDraggingDestinationStyle">0</int>
 															</object>
 														</object>
-														<string key="NSFrame">{{1, 17}, {312, 95}}</string>
+														<string key="NSFrame">{{1, 17}, {312, 102}}</string>
 														<reference key="NSSuperview" ref="610703353"/>
 														<reference key="NSNextKeyView" ref="714838401"/>
 														<int key="NSViewLayerContentsRedrawPolicy">2</int>
@@ -639,7 +723,7 @@
 														<int key="NSViewLayerContentsRedrawPolicy">2</int>
 														<reference key="NSTarget" ref="610703353"/>
 														<string key="NSAction">_doScroller:</string>
-														<double key="NSPercent">0.8529411764705882</double>
+														<double key="NSPercent">0.96938775510204078</double>
 													</object>
 													<object class="NSScroller" id="522064761">
 														<reference key="NSNextResponder" ref="610703353"/>
@@ -669,7 +753,7 @@
 													</object>
 													<reference ref="188199142"/>
 												</object>
-												<string key="NSFrame">{{276, 63}, {314, 113}}</string>
+												<string key="NSFrame">{{276, 63}, {314, 120}}</string>
 												<reference key="NSSuperview" ref="60314308"/>
 												<reference key="NSNextKeyView" ref="844110079"/>
 												<int key="NSViewLayerContentsRedrawPolicy">2</int>
@@ -681,8 +765,32 @@
 												<reference key="NSCornerView" ref="188199142"/>
 												<bytes key="NSScrollAmts">QSAAAEEgAABBmAAAQZgAAA</bytes>
 											</object>
+											<object class="NSButton" id="160987209">
+												<reference key="NSNextResponder" ref="60314308"/>
+												<int key="NSvFlags">265</int>
+												<string key="NSFrame">{{291, 323}, {285, 18}}</string>
+												<reference key="NSSuperview" ref="60314308"/>
+												<int key="NSViewLayerContentsRedrawPolicy">2</int>
+												<bool key="NSEnabled">YES</bool>
+												<object class="NSButtonCell" key="NSCell" id="565787077">
+													<int key="NSCellFlags">-2080244224</int>
+													<int key="NSCellFlags2">0</int>
+													<string key="NSContents">Send DNS requests through this server</string>
+													<reference key="NSSupport" ref="696441443"/>
+													<reference key="NSControlView" ref="160987209"/>
+													<int key="NSButtonFlags">1211912703</int>
+													<int key="NSButtonFlags2">2</int>
+													<reference key="NSNormalImage" ref="581816235"/>
+													<reference key="NSAlternateImage" ref="753862261"/>
+													<string key="NSAlternateContents"/>
+													<string key="NSKeyEquivalent"/>
+													<int key="NSPeriodicDelay">200</int>
+													<int key="NSPeriodicInterval">25</int>
 												</object>
-										<string key="NSFrame">{{10, 33}, {607, 327}}</string>
+											</object>
+										</object>
+										<string key="NSFrame">{{10, 33}, {607, 427}}</string>
+										<reference key="NSSuperview" ref="389252804"/>
 										<int key="NSViewLayerContentsRedrawPolicy">2</int>
 									</object>
 									<string key="NSLabel">SSH Servers</string>
@@ -692,14 +800,14 @@
 								<object class="NSTabViewItem" id="740075218">
 									<string key="NSIdentifier">2</string>
 									<object class="NSView" key="NSView" id="187214803">
-										<reference key="NSNextResponder" ref="389252804"/>
-										<int key="NSvFlags">256</int>
+										<nil key="NSNextResponder"/>
+										<int key="NSvFlags">274</int>
 										<object class="NSMutableArray" key="NSSubviews">
 											<bool key="EncodedWithXMLCoder">YES</bool>
 											<object class="NSButton" id="625816566">
 												<reference key="NSNextResponder" ref="187214803"/>
-												<int key="NSvFlags">268</int>
-												<string key="NSFrame">{{189, 287}, {177, 29}}</string>
+												<int key="NSvFlags">269</int>
+												<string key="NSFrame">{{195, 374}, {236, 29}}</string>
 												<reference key="NSSuperview" ref="187214803"/>
 												<int key="NSViewLayerContentsRedrawPolicy">2</int>
 												<bool key="NSEnabled">YES</bool>
@@ -721,8 +829,8 @@
 											</object>
 											<object class="NSButton" id="633518934">
 												<reference key="NSNextResponder" ref="187214803"/>
-												<int key="NSvFlags">268</int>
-												<string key="NSFrame">{{189, 256}, {270, 29}}</string>
+												<int key="NSvFlags">269</int>
+												<string key="NSFrame">{{195, 343}, {236, 29}}</string>
 												<reference key="NSSuperview" ref="187214803"/>
 												<int key="NSViewLayerContentsRedrawPolicy">2</int>
 												<bool key="NSEnabled">YES</bool>
@@ -744,15 +852,15 @@
 											</object>
 											<object class="NSButton" id="625121428">
 												<reference key="NSNextResponder" ref="187214803"/>
-												<int key="NSvFlags">268</int>
-												<string key="NSFrame">{{189, 225}, {270, 29}}</string>
+												<int key="NSvFlags">269</int>
+												<string key="NSFrame">{{195, 312}, {236, 29}}</string>
 												<reference key="NSSuperview" ref="187214803"/>
 												<int key="NSViewLayerContentsRedrawPolicy">2</int>
 												<bool key="NSEnabled">YES</bool>
 												<object class="NSButtonCell" key="NSCell" id="132399775">
 													<int key="NSCellFlags">67239424</int>
 													<int key="NSCellFlags2">0</int>
-													<string key="NSContents">Send debug information to log</string>
+													<string key="NSContents">Enable debug messages</string>
 													<reference key="NSSupport" ref="696441443"/>
 													<reference key="NSControlView" ref="625121428"/>
 													<int key="NSButtonFlags">1211912703</int>
@@ -766,8 +874,7 @@
 												</object>
 											</object>
 										</object>
-										<string key="NSFrame">{{10, 33}, {607, 327}}</string>
-										<reference key="NSSuperview" ref="389252804"/>
+										<string key="NSFrame">{{10, 33}, {607, 427}}</string>
 										<int key="NSViewLayerContentsRedrawPolicy">2</int>
 									</object>
 									<string key="NSLabel">Options</string>
@@ -783,7 +890,7 @@
 											<bool key="EncodedWithXMLCoder">YES</bool>
 											<object class="NSScrollView" id="486362220">
 												<reference key="NSNextResponder" ref="311013698"/>
-												<int key="NSvFlags">256</int>
+												<int key="NSvFlags">274</int>
 												<object class="NSMutableArray" key="NSSubviews">
 													<bool key="EncodedWithXMLCoder">YES</bool>
 													<object class="NSClipView" id="708990027">
@@ -794,7 +901,7 @@
 															<object class="NSTextView" id="758761310">
 																<reference key="NSNextResponder" ref="708990027"/>
 																<int key="NSvFlags">2322</int>
-																<string key="NSFrameSize">{596, 14}</string>
+																<string key="NSFrameSize">{596, 114}</string>
 																<reference key="NSSuperview" ref="708990027"/>
 																<int key="NSViewLayerContentsRedrawPolicy">2</int>
 																<object class="NSTextContainer" key="NSTextContainer" id="548968659">
@@ -874,7 +981,7 @@
 																<nil key="NSDelegate"/>
 															</object>
 														</object>
-														<string key="NSFrame">{{1, 1}, {596, 310}}</string>
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 														<reference key="NSSuperview" ref="486362220"/>
 														<reference key="NSNextKeyView" ref="758761310"/>
 														<int key="NSViewLayerContentsRedrawPolicy">2</int>
@@ -889,7 +996,7 @@
 													<object class="NSScroller" id="794963499">
 														<reference key="NSNextResponder" ref="486362220"/>
 														<int key="NSvFlags">256</int>
-														<string key="NSFrame">{{597, 1}, {15, 310}}</string>
+														<string key="NSFrame">{{597, 1}, {15, 410}}</string>
 														<reference key="NSSuperview" ref="486362220"/>
 														<int key="NSViewLayerContentsRedrawPolicy">2</int>
 														<reference key="NSTarget" ref="486362220"/>
@@ -900,7 +1007,7 @@
 													<object class="NSScroller" id="324242772">
 														<reference key="NSNextResponder" ref="486362220"/>
 														<int key="NSvFlags">256</int>
-														<string key="NSFrame">{{1, 311}, {596, 15}}</string>
+														<string key="NSFrame">{{1, 411}, {596, 15}}</string>
 														<reference key="NSSuperview" ref="486362220"/>
 														<int key="NSViewLayerContentsRedrawPolicy">2</int>
 														<int key="NSsFlags">1</int>
@@ -910,7 +1017,7 @@
 														<double key="NSPercent">0.94565218687057495</double>
 													</object>
 												</object>
-												<string key="NSFrame">{{-3, -3}, {613, 327}}</string>
+												<string key="NSFrame">{{-3, -3}, {613, 427}}</string>
 												<reference key="NSSuperview" ref="311013698"/>
 												<reference key="NSNextKeyView" ref="708990027"/>
 												<int key="NSViewLayerContentsRedrawPolicy">2</int>
@@ -920,7 +1027,7 @@
 												<reference key="NSContentView" ref="708990027"/>
 											</object>
 										</object>
-										<string key="NSFrame">{{10, 33}, {607, 327}}</string>
+										<string key="NSFrame">{{10, 33}, {607, 427}}</string>
 										<int key="NSViewLayerContentsRedrawPolicy">2</int>
 									</object>
 									<string key="NSLabel">Log Messages</string>
@@ -928,17 +1035,17 @@
 									<reference key="NSTabView" ref="389252804"/>
 								</object>
 							</object>
-							<reference key="NSSelectedTabViewItem" ref="740075218"/>
+							<reference key="NSSelectedTabViewItem" ref="762265164"/>
 							<reference key="NSFont" ref="696441443"/>
 							<int key="NSTvFlags">0</int>
 							<bool key="NSDrawsBackground">YES</bool>
 							<object class="NSMutableArray" key="NSSubviews">
 								<bool key="EncodedWithXMLCoder">YES</bool>
-								<reference ref="187214803"/>
+								<reference ref="60314308"/>
 							</object>
 						</object>
 					</object>
-					<string key="NSFrameSize">{611, 369}</string>
+					<string key="NSFrameSize">{611, 469}</string>
 					<reference key="NSSuperview"/>
 					<object class="NSDictionary" key="NSViewAnimations">
 						<string key="NS.key.0">subviews</string>
@@ -962,8 +1069,8 @@
 					</object>
 					<int key="NSViewLayerContentsRedrawPolicy">2</int>
 				</object>
-				<string key="NSScreenRect">{{0, 0}, {800, 578}}</string>
-				<string key="NSMinSize">{213, 129}</string>
+				<string key="NSScreenRect">{{0, 0}, {1280, 778}}</string>
+				<string key="NSMinSize">{611, 491}</string>
 				<string key="NSMaxSize">{1.79769e+308, 1.79769e+308}</string>
 			</object>
 			<object class="NSArrayController" id="678105904">
@@ -979,10 +1086,6 @@
 				<string key="NSClassName">SshuttleController</string>
 			</object>
 			<object class="NSUserDefaultsController" id="582889489">
-				<object class="NSMutableArray" key="NSDeclaredKeys">
-					<bool key="EncodedWithXMLCoder">YES</bool>
-					<string>debug</string>
-				</object>
 				<bool key="NSSharedInstance">YES</bool>
 			</object>
 			<object class="NSCustomObject" id="735871403">
@@ -1000,6 +1103,9 @@
 					<string>statusMsg</string>
 					<string>status</string>
 					<string>isValid</string>
+					<string>useDns</string>
+					<string>title</string>
+					<string>latencyControl</string>
 				</object>
 				<string key="NSObjectClassName">SshuttleServer</string>
 				<bool key="NSEditable">YES</bool>
@@ -1109,35 +1215,6 @@
 					</object>
 					<int key="connectionID">480</int>
 				</object>
-				<object class="IBConnectionRecord">
-					<object class="IBBindingConnection" key="connection">
-						<string key="label">value: arrangedObjects.host</string>
-						<reference key="source" ref="807059746"/>
-						<reference key="destination" ref="59237012"/>
-						<object class="NSNibBindingConnector" key="connector">
-							<reference key="NSSource" ref="807059746"/>
-							<reference key="NSDestination" ref="59237012"/>
-							<string key="NSLabel">value: arrangedObjects.host</string>
-							<string key="NSBinding">value</string>
-							<string key="NSKeyPath">arrangedObjects.host</string>
-							<object class="NSDictionary" key="NSOptions">
-								<bool key="EncodedWithXMLCoder">YES</bool>
-								<object class="NSArray" key="dict.sortedKeys">
-									<bool key="EncodedWithXMLCoder">YES</bool>
-									<string>NSConditionallySetsEditable</string>
-									<string>NSNullPlaceholder</string>
-								</object>
-								<object class="NSMutableArray" key="dict.values">
-									<bool key="EncodedWithXMLCoder">YES</bool>
-									<boolean value="YES"/>
-									<string>Untitled</string>
-								</object>
-							</object>
-							<int key="NSNibBindingConnectorVersion">2</int>
-						</object>
-					</object>
-					<int key="connectionID">495</int>
-				</object>
 				<object class="IBConnectionRecord">
 					<object class="IBBindingConnection" key="connection">
 						<string key="label">selectedIndex: selection.autoNets</string>
@@ -1454,6 +1531,83 @@
 					</object>
 					<int key="connectionID">557</int>
 				</object>
+				<object class="IBConnectionRecord">
+					<object class="IBBindingConnection" key="connection">
+						<string key="label">value: selection.useDns</string>
+						<reference key="source" ref="160987209"/>
+						<reference key="destination" ref="59237012"/>
+						<object class="NSNibBindingConnector" key="connector">
+							<reference key="NSSource" ref="160987209"/>
+							<reference key="NSDestination" ref="59237012"/>
+							<string key="NSLabel">value: selection.useDns</string>
+							<string key="NSBinding">value</string>
+							<string key="NSKeyPath">selection.useDns</string>
+							<object class="NSDictionary" key="NSOptions">
+								<string key="NS.key.0">NSNoSelectionPlaceholder</string>
+								<integer value="0" key="NS.object.0"/>
+							</object>
+							<int key="NSNibBindingConnectorVersion">2</int>
+						</object>
+					</object>
+					<int key="connectionID">572</int>
+				</object>
+				<object class="IBConnectionRecord">
+					<object class="IBBindingConnection" key="connection">
+						<string key="label">value: arrangedObjects.title</string>
+						<reference key="source" ref="807059746"/>
+						<reference key="destination" ref="59237012"/>
+						<object class="NSNibBindingConnector" key="connector">
+							<reference key="NSSource" ref="807059746"/>
+							<reference key="NSDestination" ref="59237012"/>
+							<string key="NSLabel">value: arrangedObjects.title</string>
+							<string key="NSBinding">value</string>
+							<string key="NSKeyPath">arrangedObjects.title</string>
+							<object class="NSDictionary" key="NSOptions">
+								<bool key="EncodedWithXMLCoder">YES</bool>
+								<object class="NSArray" key="dict.sortedKeys">
+									<bool key="EncodedWithXMLCoder">YES</bool>
+									<string>NSConditionallySetsEditable</string>
+									<string>NSNullPlaceholder</string>
+								</object>
+								<object class="NSMutableArray" key="dict.values">
+									<bool key="EncodedWithXMLCoder">YES</bool>
+									<boolean value="YES"/>
+									<string>Untitled</string>
+								</object>
+							</object>
+							<int key="NSNibBindingConnectorVersion">2</int>
+						</object>
+					</object>
+					<int key="connectionID">573</int>
+				</object>
+				<object class="IBConnectionRecord">
+					<object class="IBBindingConnection" key="connection">
+						<string key="label">selectedIndex: selection.latencyControl</string>
+						<reference key="source" ref="451647466"/>
+						<reference key="destination" ref="59237012"/>
+						<object class="NSNibBindingConnector" key="connector">
+							<reference key="NSSource" ref="451647466"/>
+							<reference key="NSDestination" ref="59237012"/>
+							<string key="NSLabel">selectedIndex: selection.latencyControl</string>
+							<string key="NSBinding">selectedIndex</string>
+							<string key="NSKeyPath">selection.latencyControl</string>
+							<object class="NSDictionary" key="NSOptions">
+								<string key="NS.key.0">NSNoSelectionPlaceholder</string>
+								<real value="1" key="NS.object.0"/>
+							</object>
+							<int key="NSNibBindingConnectorVersion">2</int>
+						</object>
+					</object>
+					<int key="connectionID">581</int>
+				</object>
+				<object class="IBConnectionRecord">
+					<object class="IBOutletConnection" key="connection">
+						<string key="label">latencyControlField</string>
+						<reference key="source" ref="307402018"/>
+						<reference key="destination" ref="451647466"/>
+					</object>
+					<int key="connectionID">582</int>
+				</object>
 			</object>
 			<object class="IBMutableOrderedSet" key="objectRecords">
 				<object class="NSArray" key="orderedObjects">
@@ -1554,15 +1708,18 @@
 							<bool key="EncodedWithXMLCoder">YES</bool>
 							<reference ref="889877302"/>
 							<reference ref="753545988"/>
+							<reference ref="26015719"/>
+							<reference ref="244571541"/>
+							<reference ref="776974664"/>
+							<reference ref="962924480"/>
+							<reference ref="705215911"/>
+							<reference ref="610703353"/>
+							<reference ref="160987209"/>
 							<reference ref="801412726"/>
 							<reference ref="840157770"/>
 							<reference ref="538356055"/>
-							<reference ref="776974664"/>
-							<reference ref="610703353"/>
-							<reference ref="26015719"/>
-							<reference ref="244571541"/>
-							<reference ref="962924480"/>
-							<reference ref="705215911"/>
+							<reference ref="451647466"/>
+							<reference ref="459566505"/>
 						</object>
 						<reference key="parent" ref="762265164"/>
 					</object>
@@ -1962,6 +2119,78 @@
 						<reference key="object" ref="132399775"/>
 						<reference key="parent" ref="625121428"/>
 					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">561</int>
+						<reference key="object" ref="160987209"/>
+						<object class="NSMutableArray" key="children">
+							<bool key="EncodedWithXMLCoder">YES</bool>
+							<reference ref="565787077"/>
+						</object>
+						<reference key="parent" ref="60314308"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">562</int>
+						<reference key="object" ref="565787077"/>
+						<reference key="parent" ref="160987209"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">574</int>
+						<reference key="object" ref="451647466"/>
+						<object class="NSMutableArray" key="children">
+							<bool key="EncodedWithXMLCoder">YES</bool>
+							<reference ref="970826243"/>
+						</object>
+						<reference key="parent" ref="60314308"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">575</int>
+						<reference key="object" ref="970826243"/>
+						<object class="NSMutableArray" key="children">
+							<bool key="EncodedWithXMLCoder">YES</bool>
+							<reference ref="790880658"/>
+						</object>
+						<reference key="parent" ref="451647466"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">576</int>
+						<reference key="object" ref="790880658"/>
+						<object class="NSMutableArray" key="children">
+							<bool key="EncodedWithXMLCoder">YES</bool>
+							<reference ref="195135854"/>
+							<reference ref="778262848"/>
+							<reference ref="903120255"/>
+						</object>
+						<reference key="parent" ref="970826243"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">577</int>
+						<reference key="object" ref="195135854"/>
+						<reference key="parent" ref="790880658"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">578</int>
+						<reference key="object" ref="778262848"/>
+						<reference key="parent" ref="790880658"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">579</int>
+						<reference key="object" ref="903120255"/>
+						<reference key="parent" ref="790880658"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">583</int>
+						<reference key="object" ref="459566505"/>
+						<object class="NSMutableArray" key="children">
+							<bool key="EncodedWithXMLCoder">YES</bool>
+							<reference ref="534245320"/>
+						</object>
+						<reference key="parent" ref="60314308"/>
+					</object>
+					<object class="IBObjectRecord">
+						<int key="objectID">584</int>
+						<reference key="object" ref="534245320"/>
+						<reference key="parent" ref="459566505"/>
+					</object>
 				</object>
 			</object>
 			<object class="NSMutableDictionary" key="flattenedProperties">
@@ -2055,6 +2284,18 @@
 					<string>552.IBAttributePlaceholdersKey</string>
 					<string>552.IBPluginDependency</string>
 					<string>553.IBPluginDependency</string>
+					<string>561.IBAttributePlaceholdersKey</string>
+					<string>561.IBPluginDependency</string>
+					<string>562.IBPluginDependency</string>
+					<string>574.IBAttributePlaceholdersKey</string>
+					<string>574.IBPluginDependency</string>
+					<string>575.IBPluginDependency</string>
+					<string>576.IBPluginDependency</string>
+					<string>577.IBPluginDependency</string>
+					<string>578.IBPluginDependency</string>
+					<string>579.IBPluginDependency</string>
+					<string>583.IBPluginDependency</string>
+					<string>584.IBPluginDependency</string>
 				</object>
 				<object class="NSMutableArray" key="dict.values">
 					<bool key="EncodedWithXMLCoder">YES</bool>
@@ -2062,13 +2303,13 @@
 					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
 					<boolean value="YES"/>
 					<boolean value="YES"/>
-					<string>{{317, 387}, {611, 369}}</string>
+					<string>{{324, 171}, {611, 469}}</string>
 					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
-					<string>{{317, 387}, {611, 369}}</string>
+					<string>{{324, 171}, {611, 469}}</string>
 					<boolean value="YES"/>
 					<boolean value="NO"/>
 					<boolean value="YES"/>
-					<string>{213, 107}</string>
+					<string>{611, 469}</string>
 					<object class="NSMutableDictionary">
 						<string key="NS.key.0">ToolTip</string>
 						<object class="IBToolTipAttribute" key="NS.object.0">
@@ -2232,6 +2473,32 @@
 					</object>
 					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
 					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
+					<object class="NSMutableDictionary">
+						<string key="NS.key.0">ToolTip</string>
+						<object class="IBToolTipAttribute" key="NS.object.0">
+							<string key="name">ToolTip</string>
+							<reference key="object" ref="160987209"/>
+							<string key="toolTip">Search for server names on the remote end and add them to your computer's /etc/hosts file.</string>
+						</object>
+					</object>
+					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
+					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
+					<object class="NSMutableDictionary">
+						<string key="NS.key.0">ToolTip</string>
+						<object class="IBToolTipAttribute" key="NS.object.0">
+							<string key="name">ToolTip</string>
+							<reference key="object" ref="451647466"/>
+							<string key="toolTip">Choose which network traffic should be routed over the VPN.</string>
+						</object>
+					</object>
+					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
+					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
+					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
+					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
+					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
+					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
+					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
+					<string>com.apple.InterfaceBuilder.CocoaPlugin</string>
 				</object>
 			</object>
 			<object class="NSMutableDictionary" key="unlocalizedProperties">
@@ -2250,7 +2517,7 @@
 				</object>
 			</object>
 			<nil key="sourceID"/>
-			<int key="maxID">557</int>
+			<int key="maxID">584</int>
 		</object>
 		<object class="IBClassDescriber" key="IBDocument.Classes">
 			<object class="NSMutableArray" key="referencedPartialClassDescriptions">
@@ -2280,6 +2547,7 @@
 							<bool key="EncodedWithXMLCoder">YES</bool>
 							<string>autoReconnectField</string>
 							<string>debugField</string>
+							<string>latencyControlField</string>
 							<string>logField</string>
 							<string>prefsWindow</string>
 							<string>routingField</string>
@@ -2295,6 +2563,7 @@
 							<string>id</string>
 							<string>id</string>
 							<string>id</string>
+							<string>id</string>
 						</object>
 					</object>
 					<object class="IBClassDescriptionSource" key="sourceIdentifier">

ui-macos/clean.do

@@ -1,4 +1,4 @@
 exec >&2
-find -name '*~' | xargs rm -f
+find . -name '*~' | xargs rm -f
 rm -rf *.app *.zip *.tar.gz
 rm -f bits/runpython *.nib sources.list

ui-macos/main.py

@@ -2,7 +2,8 @@ import sys, os, pty
 from AppKit import *
 import my, models, askpass
 
-def sshuttle_args(host, auto_nets, auto_hosts, nets, debug):
+def sshuttle_args(host, auto_nets, auto_hosts, dns, nets, debug,
+                  no_latency_control):
     argv = [my.bundle_path('sshuttle/sshuttle', ''), '-r', host]
     assert(argv[0])
     if debug:
@@ -11,6 +12,10 @@ def sshuttle_args(host, auto_nets, auto_hosts, nets, debug):
         argv.append('--auto-nets')
     if auto_hosts:
         argv.append('--auto-hosts')
+    if dns:
+        argv.append('--dns')
+    if no_latency_control:
+        argv.append('--no-latency-control')
     argv += nets
     return argv
 
@@ -131,6 +136,7 @@ class SshuttleController(NSObject):
     prefsWindow = objc.IBOutlet()
     serversController = objc.IBOutlet()
     logField = objc.IBOutlet()
+    latencyControlField = objc.IBOutlet()
     
     servers = []
     conns = {}
@@ -156,11 +162,14 @@ class SshuttleController(NSObject):
             manual_nets = ['0/0']
         else:
             manual_nets = []
+        noLatencyControl = (server.latencyControl() != models.LAT_INTERACTIVE)
         conn = Runner(sshuttle_args(host,
                                     auto_nets = nets_mode == models.NET_AUTO,
                                     auto_hosts = server.autoHosts(),
+                                    dns = server.useDns(),
                                     nets = manual_nets,
-                                    debug = self.debugField.state()),
+                                    debug = self.debugField.state(),
+                                    no_latency_control = noLatencyControl),
                       logfunc=logfunc, promptfunc=promptfunc,
                       serverobj=server)
         self.conns[host] = conn
@@ -213,6 +222,7 @@ class SshuttleController(NSObject):
         if len(self.servers):
             for i in self.servers:
                 host = i.host()
+                title = i.title()
                 want = i.wantConnect()
                 connected = i.connected()
                 numnets = len(list(i.nets()))
@@ -222,9 +232,9 @@ class SshuttleController(NSObject):
                     additem('Connect %s (no routes)' % host, None, i)
                 elif want:
                     any_conn = i
-                    additem('Disconnect %s' % host, self.cmd_disconnect, i)
+                    additem('Disconnect %s' % title, self.cmd_disconnect, i)
                 else:
-                    additem('Connect %s' % host, self.cmd_connect, i)
+                    additem('Connect %s' % title, self.cmd_connect, i)
                 if not want:
                     msg = 'Off'
                 elif i.error():
@@ -236,12 +246,6 @@ class SshuttleController(NSObject):
                     msg = 'Connecting...'
                     any_inprogress = i
                 addnote('   State: %s' % msg)
-                if i.autoNets() == 0:
-                    addnote('   Routes: All')
-                elif i.autoNets() == 2:
-                    addnote('   Routes: Auto')
-                else:
-                    addnote('   Routes: Custom')
         else:
             addnote('No servers defined yet')
 
@@ -279,13 +283,17 @@ class SshuttleController(NSObject):
                 net.setWidth_(width)
                 nl.append(net)
             
-            autoNets = s.get('autoNets', 1)
-            autoHosts = s.get('autoHosts', 1)
+            autoNets = s.get('autoNets', models.NET_AUTO)
+            autoHosts = s.get('autoHosts', True)
+            useDns = s.get('useDns', autoNets == models.NET_ALL)
+            latencyControl = s.get('latencyControl', models.LAT_INTERACTIVE)
             srv = models.SshuttleServer.alloc().init()
             srv.setHost_(host)
             srv.setAutoNets_(autoNets)
             srv.setAutoHosts_(autoHosts)
             srv.setNets_(nl)
+            srv.setUseDns_(useDns)
+            srv.setLatencyControl_(latencyControl)
             sl.append(srv)
         self.serversController.addObjects_(sl)
         self.serversController.setSelectionIndex_(0)
@@ -303,7 +311,9 @@ class SshuttleController(NSObject):
             d = dict(host=s.host(),
                      nets=nets,
                      autoNets=s.autoNets(),
-                     autoHosts=s.autoHosts())
+                     autoHosts=s.autoHosts(),
+                     useDns=s.useDns(),
+                     latencyControl=s.latencyControl())
             l.append(d)
         my.Defaults().setObject_forKey_(l, 'servers')
         self.fill_menu()
@@ -315,6 +325,11 @@ class SshuttleController(NSObject):
         tf('Determine automatically')
         tf('Custom...')
 
+        self.latencyControlField.removeAllItems()
+        tf = self.latencyControlField.addItemWithTitle_
+        tf('Fast transfer')
+        tf('Low latency')
+
         # Hmm, even when I mark this as !enabled in the .nib, it still comes
         # through as enabled.  So let's just disable it here (since we don't
         # support this feature yet).

ui-macos/models.py

@@ -58,6 +58,9 @@ NET_ALL = 0
 NET_AUTO = 1
 NET_MANUAL = 2
 
+LAT_BANDWIDTH = 0
+LAT_INTERACTIVE = 1
+
 class SshuttleServer(NSObject):
     def init(self):
         self = super(SshuttleServer, self).init()
@@ -93,10 +96,27 @@ class SshuttleServer(NSObject):
             return False
         return True
 
+    def title(self):
+        host = self.host()
+        if not host:
+            return host
+        an = self.autoNets()
+        suffix = ""
+        if an == NET_ALL:
+            suffix = " (all traffic)"
+        elif an == NET_MANUAL:
+            n = self.nets()
+            suffix = ' (%d subnet%s)' % (len(n), len(n)!=1 and 's' or '')
+        return self.host() + suffix
+    def setTitle_(self, v):
+        # title is always auto-generated
+        config_changed()
+    
     def host(self):
         return getattr(self, '_k_host', None)
     def setHost_(self, v):
         self._k_host = v
+        self.setTitle_(None)
         config_changed()
     @objc.accessor
     def validateHost_error_(self, value, error):
@@ -109,6 +129,7 @@ class SshuttleServer(NSObject):
         return getattr(self, '_k_nets', [])
     def setNets_(self, v):
         self._k_nets = v
+        self.setTitle_(None)
         config_changed()
     def netsHidden(self):
         #print 'checking netsHidden'
@@ -122,6 +143,8 @@ class SshuttleServer(NSObject):
     def setAutoNets_(self, v):
         self._k_autoNets = v
         self.setNetsHidden_(-1)
+        self.setUseDns_(v == NET_ALL)
+        self.setTitle_(None)
         config_changed()
 
     def autoHosts(self):
@@ -129,3 +152,15 @@ class SshuttleServer(NSObject):
     def setAutoHosts_(self, v):
         self._k_autoHosts = v
         config_changed()
+
+    def useDns(self):
+        return getattr(self, '_k_useDns', False)
+    def setUseDns_(self, v):
+        self._k_useDns = v
+        config_changed()
+
+    def latencyControl(self):
+        return getattr(self, '_k_latencyControl', LAT_INTERACTIVE)
+    def setLatencyControl_(self, v):
+        self._k_latencyControl = v
+        config_changed()

ui-macos/run.do

@@ -1,3 +1,4 @@
 redo-ifchange debug.app
 exec >&2
-./debug.app/Contents/MacOS/run
+./debug.app/Contents/MacOS/Sshuttle
+