From be217b0370ecc19dd205615b739e6995c066bdd1 Mon Sep 17 00:00:00 2001 From: Camil Staps Date: Sat, 5 Sep 2015 13:47:35 +0200 Subject: Assignment 1 --- netsec-assignment1-S4498062/exercise2/netcat-l.py | 32 +++++++++++++++++++++++ netsec-assignment1-S4498062/exercise2/netcat.py | 12 +++++++++ 2 files changed, 44 insertions(+) create mode 100755 netsec-assignment1-S4498062/exercise2/netcat-l.py create mode 100755 netsec-assignment1-S4498062/exercise2/netcat.py (limited to 'netsec-assignment1-S4498062/exercise2') diff --git a/netsec-assignment1-S4498062/exercise2/netcat-l.py b/netsec-assignment1-S4498062/exercise2/netcat-l.py new file mode 100755 index 0000000..8a4ce2f --- /dev/null +++ b/netsec-assignment1-S4498062/exercise2/netcat-l.py @@ -0,0 +1,32 @@ +#!/usr/bin/env python3 + +import socket + +def handle(passedconn): + data = b"" + newdata, addr = passedconn.recvfrom(size) + print(newdata, addr) + while newdata: + datastring = newdata.decode("utf-8") + print(handlestring(datastring, len("spam "), "\n")) + newdata, addr = passedconn.recvfrom(size) + +def handlestring(datastring, length, delimiter): + stringlist = datastring.split(sep=delimiter) + filteredlist = [s[length:] for s in stringlist] + filteredstring = delimiter.join(filteredlist) + return filteredstring + +def main(): + s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) + s.bind((host, port)) + handle(s) + s.close() + +host = "localhost" +port = 42424 +size = 2 ** 16 - 1 + +if __name__ == "__main__": + main() + diff --git a/netsec-assignment1-S4498062/exercise2/netcat.py b/netsec-assignment1-S4498062/exercise2/netcat.py new file mode 100755 index 0000000..5585c32 --- /dev/null +++ b/netsec-assignment1-S4498062/exercise2/netcat.py @@ -0,0 +1,12 @@ +#!/usr/bin/env python3 + +import socket + +s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) +stringbuf = "" +for i in range(0, 1000): + stringbuf = stringbuf + "spam " + str(i) + "\n" +buf = stringbuf.encode("utf-8") +s.sendto(buf, ("localhost", 42424)) +s.close() + -- cgit v1.2.3