Assignment 1

2 files changed, 52 insertions, 0 deletions

diff --git a/netsec-assignment1-S4498062/exercise1/netcat-l.py b/netsec-assignment1-S4498062/exercise1/netcat-l.py
new file mode 100755
index 0000000..4050b1a
--- /dev/null
+++ b/netsec-assignment1-S4498062/exercise1/netcat-l.py
@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+
+import socket
+
+def handle(passedconn):
+    data = b""
+    newdata = passedconn.recv(size)
+    while newdata:
+        data += newdata
+        newdata = passedconn.recv(size)
+    if data:
+        datastring = data.decode("utf-8")
+        print(handlestring(datastring, len("spam "), "\n"))
+    passedconn.close()
+
+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_STREAM)
+    s.bind((host, port))
+    s.listen(backlog)
+    
+    for i in [1, 2, 3]:
+        conn, clientaddress = s.accept()
+        handle(conn)
+    
+    s.close()
+
+host = "localhost"
+port = 42424
+backlog = 5
+size = 1024
+
+if __name__ == "__main__":
+    main()
+
diff --git a/netsec-assignment1-S4498062/exercise1/netcat.py b/netsec-assignment1-S4498062/exercise1/netcat.py
new file mode 100755
index 0000000..1bd7fd9
--- /dev/null
+++ b/netsec-assignment1-S4498062/exercise1/netcat.py
@@ -0,0 +1,12 @@
+#!/usr/bin/env python3
+
+import socket
+
+s = socket.create_connection(("localhost", 42424))
+stringbuf = ""
+for i in range(0, 1000):
+    stringbuf = stringbuf + "spam " + str(i) + "\n"
+buf = stringbuf.encode("utf-8")
+s.sendall(buf)
+s.close()
+