Kenneth: Created page with "== Sockets == Python Sockets - http://docs.python.org/library/socket.html

 # Echo server program import socket  HOST = ''                 # Symbolic name meaning all av..."

2016-11-01T19:12:34Z

Created page with "== Sockets == Python Sockets - http://docs.python.org/library/socket.html <pre> # Echo server program import socket HOST = '' # Symbolic name meaning all av..."

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== Sockets ==

Python Sockets - http://docs.python.org/library/socket.html

<pre>
# Echo server program
import socket

HOST = '' # Symbolic name meaning all available interfaces
PORT = 50007 # Arbitrary non-privileged port
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((HOST, PORT))
s.listen(1)
conn, addr = s.accept()
print 'Connected by', addr
while 1:
data = conn.recv(1024)
if not data: break
conn.send(data)
conn.close()
</pre>

<pre>
# Echo client program
import socket

HOST = 'daring.cwi.nl' # The remote host
PORT = 50007 # The same port as used by the server
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((HOST, PORT))
s.send('Hello, world')
data = s.recv(1024)
s.close()
print 'Received', repr(data)
</pre>

See also: Socket Programming HOWTO — Python v2.7.1 documentation - http://docs.python.org/howto/sockets.html

== Telnet Example ==

<pre>
# code in progress

# simple telnet server

import socket, sys

HOST = ''
PORT = 23
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((HOST, PORT))
s.listen(1)
print "Waiting..."
conn, addr = s.accept()
print "Connected."
print 'Connected by', addr
conn.send("Hello\r\n")
clean_data = ''
quit = False
while not quit:
data = conn.recv(1024)
if not data: break
for c in data:
# clean data
if c in ' abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ':
clean_data += c
# process new line
if c in '\n':
clean_data = clean_data.strip()
print clean_data
if clean_data == "quit":
quit = True
clean_data = ""
conn.send("Now go away\r\n")
break
clean_data = ""
#sys.stdout.write("data: " + data + "\n")
#if '\n' in data or '\r' in data:
# conn.send('\r\n')
#else:
# conn.send(data)
print "Connection closed."
conn.close()
</pre>

Python/Sockets - Revision history

Kenneth: Created page with "== Sockets == Python Sockets - http://docs.python.org/library/socket.html
# Echo server program import socket HOST = '' # Symbolic name meaning all av..."