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client.py: do DNS listener on the same port as the TCP listener.

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UDP and TCP have separate port namespaces, so to make it easier to keep
track of what's going on, just use the same transproxy port number for both.
We still need two sockets, but now tcpdumps are easier to understand.
This commit is contained in:
Avery Pennarun 2011-01-26 04:44:32 -08:00
parent 7f3c522c56
commit 88937e148e
1 changed files with 9 additions and 6 deletions
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15
client.py
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@ -330,8 +330,6 @@ def main(listenip, ssh_cmd, remotename, python, latency_control, dns,
return 5
debug1('Starting sshuttle proxy.\n')
listener = socket.socket()
listener.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
if listenip[1]:
ports = [listenip[1]]
else:
@ -341,8 +339,13 @@ def main(listenip, ssh_cmd, remotename, python, latency_control, dns,
debug2('Binding:')
for port in ports:
debug2(' %d' % port)
listener = socket.socket()
listener.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
dnslistener = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
dnslistener.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
try:
listener.bind((listenip[0], port))
dnslistener.bind((listenip[0], port))
bound = True
break
except socket.error, e:
@ -355,14 +358,14 @@ def main(listenip, ssh_cmd, remotename, python, latency_control, dns,
listenip = listener.getsockname()
debug1('Listening on %r.\n' % (listenip,))
dnsport = 0
dnslistener = None
if dns:
dnslistener = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
dnslistener.bind((listenip[0], 0))
dnsip = dnslistener.getsockname()
debug1('DNS listening on %r.\n' % (dnsip,))
dnsport = dnsip[1]
else:
dnsport = 0
dnslistener = None
dnslistener.bind((listenip[0], 0))
fw = FirewallClient(listenip[1], subnets_include, subnets_exclude, dnsport)