When source_address of python socket.create_connection is used? [closed]

by

As the documentation says:

If supplied, source_address must be a 2-tuple (host, port) for the socket to bind to as its source address before connecting. If host or port are ‘’ or 0 respectively the OS default behavior will be used.

In other words, it’s used when you need to bind the socket before connecting. If you don’t know why you’d ever need to do that, you don’t need to do it. But here’s a brief sketch of an example: An FTP server needs to be able to make an outgoing data connection on the same interface as the incoming control connection. You can do that by binding the same local address that the control connection has. So:

def make_data_conn(controlconn, port, timeout):
    return socket.create_connection((controlconn.getpeername()[0], port),
                                    timeout,
                                    (controlconn.getsockname()[0], 0))

More Related Contents:

  1. TypeError: ‘module’ object is not callable
  2. socket.error: [Errno 10013] An attempt was made to access a socket in a way forbidden by its access permissions
  3. Problem with multi threaded Python app and socket connections
  4. How to set timeout on python’s socket recv method?
  5. Basic Python client socket example
  6. What does Python’s socket.recv() return for non-blocking sockets if no data is received until a timeout occurs?
  7. socket.shutdown vs socket.close
  8. How Do I Use Raw Socket in Python?
  9. Errno 10061 : No connection could be made because the target machine actively refused it ( client – server )
  10. Python socket connection timeout
  11. Read timeout using either urllib2 or any other http library
  12. How does the python socket.recv() method know that the end of the message has been reached?
  13. Can Python select what network adapter when opening a socket?
  14. Send a file through sockets in Python
  15. Sending a reset in TCP/IP Socket connection
  16. Imported module not found in PyInstaller
  17. Running Sudo Command with paramiko
  18. socket.error:[errno 99] cannot assign requested address and namespace in python
  19. Python socket bind to any IP?
  20. Can I run a Python script as a service?
  21. When does socket.recv(recv_size) return?
  22. Python socket.error: [Errno 111] Connection refused
  23. How to use socket in Python as a context manager?
  24. Sending a file over TCP sockets in Python
  25. How to make a simple multithreaded socket server in Python that remembers clients
  26. How do I determine all of my IP addresses when I have multiple NICs?
  27. Socket Programming Python: How to make sure entire message is received?
  28. Socket Programming Python: How to make sure entire message is received?
  29. What is “backlog” in TCP connections?
  30. How to close a socket left open by a killed program?

Leave a Comment