Merge branch 'net' into lock

 Conflicts:
	.gitignore
	Makefile
	conf/lab.mk
	kernel/defs.h
	user/user.h

1 files changed, 12 insertions, 0 deletions

diff --git a/ping.py b/ping.py
new file mode 100644
index 0000000..eab10f8
--- /dev/null
+++ b/ping.py
@@ -0,0 +1,12 @@
+import socket
+import sys
+import time
+
+sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+addr = ('localhost', int(sys.argv[1]))
+buf = "this is a ping!".encode('utf-8')
+
+while True:
+	print("pinging...", file=sys.stderr)
+	sock.sendto(buf, ("127.0.0.1", int(sys.argv[1])))
+	time.sleep(1)