diff --git a/README.md b/README.md
index 4c4f35c..a82e820 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,14 @@
 
 Aby wyjść ze środowiska uruchom komendę `deactivate`.
 
+## Testowanie działania
+
+1. Na komputerze A uruchom program `alice.py` podając jako argumenty dwa pliki, z których Bob może wybrać jeden
+2. Na komputerze B uruchom program `bob.py` podając jako argument który z plików ma uruchomić (`0` lub `1`) oraz adres IP komputera A przez flagę `--ip`.
+
+W razie wątpliwości zapoznaj się z pomocą programów `alice.py` i `bob.py` lub zobacz przykładowy test w `test.sh`.
+
+
 ## Dodawanie paczek
 
 W środowisku wirtualnym:
diff --git a/alice.py b/alice.py
new file mode 100644
index 0000000..992ffb1
--- /dev/null
+++ b/alice.py
@@ -0,0 +1,30 @@
+import argparse
+import socket
+import contextlib
+from otp import alice
+from net import send, send_point, recv, recv_point
+
+def main():
+    p = argparse.ArgumentParser()
+    p.add_argument('msg0', help='First file which Bob can receive')
+    p.add_argument('msg1', help='Second file which Bob can receive')
+    p.add_argument('-p', '--port', type=int, default=8080)
+    args = p.parse_args()
+
+    with open(args.msg0, 'rb') as f0, open(args.msg1, 'rb') as f1:
+        m0 = f0.read()
+        m1 = f1.read()
+
+    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
+        s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+        s.bind(('0.0.0.0', args.port))
+        s.listen(1)
+        bob, address = s.accept()
+        ip, _ = address
+        a = alice(m0, m1)
+        send_point(bob, a.send(None))
+        send(bob, a.send(recv_point(bob)))
+
+
+if __name__ == "__main__":
+    main()
diff --git a/bob.py b/bob.py
new file mode 100644
index 0000000..a5196cc
--- /dev/null
+++ b/bob.py
@@ -0,0 +1,27 @@
+import argparse
+import socket
+from otp import bob
+from net import send, send_point, recv, recv_point
+import contextlib
+import sys
+
+def main():
+    p = argparse.ArgumentParser()
+    p.add_argument('c', type=int, help="Which message to choose? [0, 1]")
+    p.add_argument('--ip', type=str, default='127.0.0.1')
+    p.add_argument('-p', '--port', type=int, default=8080)
+    args = p.parse_args()
+
+
+    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as alice:
+        alice.connect((args.ip, args.port))
+        with contextlib.suppress(StopIteration):
+            b = bob(args.c > 0)
+            b.send(None)
+            send_point(alice, b.send(recv_point(alice)))
+            response = b.send(recv(alice))
+        sys.stdout.buffer.write(response)
+
+if __name__ == "__main__":
+    main()
+
diff --git a/net.py b/net.py
new file mode 100644
index 0000000..bfb02a1
--- /dev/null
+++ b/net.py
@@ -0,0 +1,29 @@
+import socket
+import pickle
+import struct
+import ecpy.curves
+from otp import curve
+
+def send_point(s: socket.socket, point: ecpy.curves.Point):
+    send(s, (point.x, point.y))
+
+def recv_point(s: socket.socket) -> ecpy.curves.Point:
+    point = recv(s)
+    return ecpy.curves.Point(point[0], point[1], curve)
+
+def send(s: socket.socket, data):
+    data = pickle.dumps(data, protocol=4)
+    data = struct.pack('<I', len(data)) + data
+    s.sendall(data)
+
+def recv(s: socket.socket):
+    length = s.recv(4)
+    length, *_ = struct.unpack('<I', length)
+
+    pickled = b""
+    toread = length
+    while toread:
+        read = s.recv(toread)
+        pickled += read
+        toread -= len(pickled)
+    return pickle.loads(pickled)
diff --git a/main.py b/otp.py
similarity index 95%
rename from main.py
rename to otp.py
index 3dfe386..18e32b7 100644
--- a/main.py
+++ b/otp.py
@@ -57,7 +57,7 @@ def bob(c: bool):
 
     e0, e1, salt = yield B
     kc = H(curve.mul_point(b, A), salt)
-    print(D(kc, e1 if c else e0))
+    yield D(kc, e1 if c else e0)
 
 
 ########################################################
@@ -73,7 +73,8 @@ def main():
         b.send(None)
         B = b.send(A)
         encrypted = a.send(B)
-        b.send(encrypted)
+        result = b.send(encrypted)
+        print(result)
 
 
 if __name__ == "__main__":
diff --git a/test.sh b/test.sh
new file mode 100755
index 0000000..9a59bee
--- /dev/null
+++ b/test.sh
@@ -0,0 +1,16 @@
+readonly MSG=("to jest pierwsza wiadomość" "to jest druga wiadomość")
+
+function do_test() {
+	python alice.py <(echo "${MSG[0]}") <(echo "${MSG[1]}") &
+	alice=$!
+	sleep 1
+
+	if [ "${MSG[$1]}" != "$(python bob.py $1)" ]; then
+		echo "Failed in test $1"
+	fi
+
+	wait $alice
+}
+
+do_test 0
+do_test 1