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| * [http://www.python.org/doc/current/lib/module-socket.html socket] -- builtin Python module * [http://www.python.org/doc/current/lib/module-telnetlib.html telnetlib] -- builtin Python module * [http://woozle.org/~neale/papers/sockets.html Introduction to TCP Sockets] -- uses Python to explain |
* [[http://www.python.org/doc/current/lib/module-socket.html|socket]] -- builtin Python module * [[http://www.python.org/doc/current/lib/module-telnetlib.html|telnetlib]] -- builtin Python module * [[http://woozle.org/~neale/papers/sockets.html|Introduction to TCP Sockets]] -- uses Python to explain |
TCP Communication
Contents
See also: UdpCommunication
Client
Here's simple code to send and receive data by TCP in Python:
1 #!/usr/bin/env python
2
3 import socket
4
5
6 TCP_IP = '127.0.0.1'
7 TCP_PORT = 5005
8 BUFFER_SIZE = 1024
9 MESSAGE="Hello, World!"
10
11 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
12 s.connect((TCP_IP, TCP_PORT))
13 s.send(MESSAGE)
14 data = s.recv(BUFFER_SIZE)
15 s.close()
16
17 print "received data:", data
Server
Here's simple code to serve TCP in Python:
1 #!/usr/bin/env python
2
3 import socket
4
5
6 TCP_IP = '127.0.0.1'
7 TCP_PORT = 5005
8 BUFFER_SIZE = 10 # Normally 1024, but we want fast response
9
10 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
11 s.bind((TCP_IP, TCP_PORT))
12 s.listen(1)
13
14 conn, addr = s.accept()
15 print 'Connection address:', addr
16 while 1:
17 data = conn.recv(BUFFER_SIZE)
18 if not data: break
19 print "received data:", data
20 conn.send(data) # echo
21 conn.close()
Links
socket -- builtin Python module
telnetlib -- builtin Python module
Introduction to TCP Sockets -- uses Python to explain
Discussion
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