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* Make the Bittorrent test more interesting by putting one client

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behind a NAT router and verifying that another client can connect to
  it through the NAT (using a UPnP-IGD mapping created automatically
  by miniupnpd).

svn path=/nixos/trunk/; revision=21932
This commit is contained in:
Eelco Dolstra 2010-05-20 23:07:21 +00:00
parent 4dac9e5814
commit 3c7a6eb53c
1 changed files with 54 additions and 6 deletions
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60
tests/bittorrent.nix
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@ -1,9 +1,24 @@
# This test runs a Bittorrent tracker on one machine, and verifies
# that two client machines can download the torrent using
# `transmission'. The first client (behind a NAT router) downloads
# from the initial seeder running on the tracker. Then we kill the
# initial seeder. The second client downloads from the first client,
# which only works if the first client successfully uses the UPnP-IGD
# protocol to poke a hole in the NAT.
{ pkgs, ... }:
let
# Some random file to serve.
file = pkgs.nixUnstable.src;
miniupnpdConf = pkgs.writeText "miniupnpd.conf"
''
ext_ifname=eth1
listening_ip=192.168.2.3/24
allow 1024-65535 192.168.2.0/24 1024-65535
'';
in
@ -20,7 +35,20 @@ in
services.httpd.documentRoot = "/tmp";
};
client =
router =
{ config, pkgs, ... }:
{ environment.systemPackages = [ pkgs.iptables pkgs.miniupnpd ];
virtualisation.vlans = [ 1 2 ];
};
client1 =
{ config, pkgs, ... }:
{ environment.systemPackages = [ pkgs.transmission ];
virtualisation.vlans = [ 2 ];
networking.defaultGateway = "192.168.2.3"; # !!! ugly
};
client2 =
{ config, pkgs, ... }:
{ environment.systemPackages = [ pkgs.transmission ];
};
@ -30,6 +58,17 @@ in
''
startAll;
# Enable NAT on the router and start miniupnpd.
$router->mustSucceed(
"iptables -t nat -F",
"iptables -t nat -A POSTROUTING -s 192.168.2.0/24 -d 192.168.2.0/24 -j ACCEPT",
"iptables -t nat -A POSTROUTING -s 192.168.2.0/24 -j SNAT --to-source 192.168.1.3", # !!! ugly
"iptables -t nat -N MINIUPNPD",
"iptables -t nat -A PREROUTING -i eth1 -j MINIUPNPD",
"echo 1 > /proc/sys/net/ipv4/ip_forward",
"miniupnpd -f ${miniupnpdConf}"
);
# Create the torrent.
$tracker->mustSucceed("mkdir /tmp/data");
$tracker->mustSucceed("cp ${file} /tmp/data/test.tar.bz2");
@ -41,13 +80,22 @@ in
$tracker->waitForOpenPort(6969);
# Start the initial seeder.
$tracker->mustSucceed("transmissioncli /tmp/test.torrent -M -w /tmp/data >&2 &");
my $pid = $tracker->mustSucceed("transmissioncli /tmp/test.torrent -M -w /tmp/data >&2 & echo \$!");
# Now we should be able to download from the client.
# Now we should be able to download from the client behind the NAT.
$tracker->waitForJob("httpd");
$client->mustSucceed("transmissioncli http://tracker/test.torrent -M -w /tmp >&2 &");
$client->waitForFile("/tmp/test.tar.bz2");
$client->mustSucceed("cmp /tmp/test.tar.bz2 ${file}");
$client1->mustSucceed("transmissioncli http://tracker/test.torrent -w /tmp >&2 &");
$client1->waitForFile("/tmp/test.tar.bz2");
$client1->mustSucceed("cmp /tmp/test.tar.bz2 ${file}");
# Bring down the initial seeder.
$tracker->mustSucceed("kill -9 $pid");
# Now download from the second client. This can only succeed if
# the first client created a NAT hole in the router.
$client2->mustSucceed("transmissioncli http://tracker/test.torrent -M -w /tmp >&2 &");
$client2->waitForFile("/tmp/test.tar.bz2");
$client2->mustSucceed("cmp /tmp/test.tar.bz2 ${file}");
'';
}