add hg and python

1 files changed, 31 insertions, 0 deletions

diff --git a/sys/src/cmd/python/Demo/sockets/echosvr.py b/sys/src/cmd/python/Demo/sockets/echosvr.py
new file mode 100755
index 000000000..f8a9623d7
--- /dev/null
+++ b/sys/src/cmd/python/Demo/sockets/echosvr.py
@@ -0,0 +1,31 @@
+#! /usr/bin/env python
+
+# Python implementation of an 'echo' tcp server: echo all data it receives.
+#
+# This is the simplest possible server, servicing a single request only.
+
+import sys
+from socket import *
+
+# The standard echo port isn't very useful, it requires root permissions!
+# ECHO_PORT = 7
+ECHO_PORT = 50000 + 7
+BUFSIZE = 1024
+
+def main():
+    if len(sys.argv) > 1:
+        port = int(eval(sys.argv[1]))
+    else:
+        port = ECHO_PORT
+    s = socket(AF_INET, SOCK_STREAM)
+    s.bind(('', port))
+    s.listen(1)
+    conn, (remotehost, remoteport) = s.accept()
+    print 'connected by', remotehost, remoteport
+    while 1:
+        data = conn.recv(BUFSIZE)
+        if not data:
+            break
+        conn.send(data)
+
+main()