Initial revision

Demo/sockets/echosvr.py

@@ -0,0 +1,31 @@
+#! /usr/local/python
+
+# Python implementation of an 'echo' tcp server: echo all data it receives.
+#
+# This is the simplest possible server, sevicing 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(0)
+	conn, (host, remoteport) = s.accept()
+	print 'connected by', host, remoteport
+	while 1:
+		data = conn.recv(BUFSIZE)
+		if not data:
+			break
+		conn.send(data)
+
+main()