Porting PicoTCP WIP

kernel/picotcp/test/python/fragmentation.py

@@ -0,0 +1,60 @@
+#!/usr/bin/python
+#
+# fragmentation.py
+#
+# Fragmentation test with PicoTCP sending and Linux receiving
+#
+# (sender)                         (Receiver)
+# PicoTCP ------------------------ Linux
+#
+# An udpclient is started which will give DATASIZE bytes in one go
+# to the socket. This data will be fragmented and send over to the
+# Linux, where it is reassembled and received in one piece.
+#
+
+from  topology import *
+import socket, random, string
+
+SRC_ADDR = ''
+DST_ADDR = '172.16.1.1'
+SRC_PORT = 6667
+SENDTO_PORT = 6667
+LISTEN_PORT = 6667
+DATASIZE = 4000
+LOOPS = 4
+SUBLOOPS = 1
+UDPCLIENT = "udpclient:" + str(DST_ADDR) + ":" + str(SENDTO_PORT) + ":"  + str(LISTEN_PORT) + ":" + str(DATASIZE) + ":" + str(LOOPS) + ":" + str(SUBLOOPS)
+
+print UDPCLIENT
+
+T = Topology()
+net1 = Network(T, "pyt0")
+h1 = Host(T, net1, args=UDPCLIENT)
+
+s_udp = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+s_udp.bind((SRC_ADDR, SRC_PORT))
+s_udp.settimeout(5);
+
+raw_input("Press enter to continue ...")
+start(T)
+
+while True:
+  data, addr = s_udp.recvfrom(DATASIZE)
+  #print data
+  if len(data) == DATASIZE:
+    print '\n\n'
+    print '+++++++++++++++++++++++++++++++++++++++++++++'
+    print '+++++ fragmentation test IS successful +++++'
+    print '+++++++++++++++++++++++++++++++++++++++++++++'
+    print '\n\n'
+    cleanup()
+    exit(0)
+
+print '\n\n'
+print '+++++++++++++++++++++++++++++++++++++++++++++'
+print '+++++ fragmentation test NOT successful ++++'
+print '+++++++++++++++++++++++++++++++++++++++++++++'
+print '\n\n'
+cleanup()
+exit(1)
+