Ping flood test (exposing a serious TCP tunnel bug)

diff --git a/test/testbeds/planetlab/execute.py b/test/testbeds/planetlab/execute.py
index 1205e9f..90aa062 100755 (executable)
--- a/test/testbeds/planetlab/execute.py
+++ b/test/testbeds/planetlab/execute.py
@@ -356,7 +356,7 @@ echo 'OKIDOKI'
         self.assertTrue(netpipe_stats, "Unavailable netpipe stats")
 
     @test_util.skipUnless(test_util.pl_auth() is not None, "Test requires PlanetLab authentication info (PL_USER and PL_PASS environment variables)")
-    def _pingtest(self, TunClass, ConnectionProto, Cipher, Filter1=None, Filter2=None, Filter1args=None, Filter2args=None, PLREX=None):
+    def _pingtest(self, TunClass, ConnectionProto, Cipher, Filter1=None, Filter2=None, Filter1args=None, Filter2args=None, PLREX=None, flood=False):
         instance = self.make_instance()
         
         instance.defer_create(2, "Node")
@@ -374,6 +374,8 @@ echo 'OKIDOKI'
         instance.defer_create_set(7, "tun_cipher", Cipher)
         instance.defer_add_trace(7, "packets")
         instance.defer_add_address(7, self.net_prefix+".2", 24, False)
+        if flood:
+            instance.defer_create_set(7, "bwlimit", 128)
         instance.defer_connect(2, "devs", 7, "node")
         instance.defer_create(8, TunClass)
         instance.defer_create_set(8, "tun_cipher", Cipher)
@@ -381,7 +383,10 @@ echo 'OKIDOKI'
         instance.defer_add_address(8, self.net_prefix+".3", 24, False)
         instance.defer_connect(3, "devs", 8, "node")
         instance.defer_create(9, "Application")
-        instance.defer_create_set(9, "command", "ping -qc10 {#[GUID-8].addr[0].[Address]#}")
+        if flood:
+            instance.defer_create_set(9, "command", "sudo -S ping -s 1000 -l 1000 -qfc1000 {#[GUID-8].addr[0].[Address]#} ; sleep 20 ; ping -qc10 {#[GUID-8].addr[0].[Address]#}")
+        else:
+            instance.defer_create_set(9, "command", "ping -qc10 {#[GUID-8].addr[0].[Address]#}")
         instance.defer_add_trace(9, "stdout")
         instance.defer_add_trace(9, "stderr")
         instance.defer_connect(9, "node", 2, "apps")
@@ -419,6 +424,8 @@ echo 'OKIDOKI'
 --- .* ping statistics ---
 10 packets transmitted, [0-9]+ received,.* %s%% packet loss, time \d*ms.*
 """ % (plr,)
+        if flood:
+            comp_result = ".*" + comp_result
 
         try:
             instance.do_setup()
@@ -451,7 +458,7 @@ echo 'OKIDOKI'
                 pass
 
         # asserts at the end, to make sure there's proper cleanup
-        self.assertTrue(re.match(comp_result, ping_result, re.MULTILINE),
+        self.assertTrue(re.match(comp_result, ping_result, re.MULTILINE|re.DOTALL),
             "Unexpected trace:\n%s\nPackets @ source:\n%s\nPackets @ target:\n%s" % (
                 ping_result,
                 packets1,
@@ -469,6 +476,14 @@ echo 'OKIDOKI'
     def test_tun_ping_gre(self):
         self._pingtest("TunInterface", "gre", "PLAIN")
 
+    @test_util.skipUnless(test_util.pl_auth() is not None, "Test requires PlanetLab authentication info (PL_USER and PL_PASS environment variables)")
+    def test_tun_ping_flood(self):
+        self._pingtest("TunInterface", "tcp", "PLAIN", flood = True)
+
+    @test_util.skipUnless(test_util.pl_auth() is not None, "Test requires PlanetLab authentication info (PL_USER and PL_PASS environment variables)")
+    def test_tun_ping_flood_udp(self):
+        self._pingtest("TunInterface", "udp", "PLAIN", flood = True)
+
     @test_util.skipUnless(test_util.pl_auth() is not None, "Test requires PlanetLab authentication info (PL_USER and PL_PASS environment variables)")
     def test_tap_ping(self):
         self._pingtest("TapInterface", "tcp", "AES")