Can Python select what network adapter when opening a socket?

by

I can’t speak much for Windows, but on Linux the interface is normally not chosen until a routing decision is made, therefore you usually don’t have a say on which interface your packets leave.

You do have the option though, of using SO_BINDTODEVICE (see man 7 socket) on Linux. This binds a socket to a device, however, only root can set this option on a socket.

Just checked, and the python socket library doesn’t have SO_BINDTODEVICE defined, but you get it from socket.h:

# from socket.h
# define SO_BINDTODEVICE 25

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET, 25, 'eth0')

See also:

More Related Contents:

  1. Getting MAC Address
  2. Python pysftp get_r from Linux works fine on Linux but not on Windows
  3. fcntl substitute on Windows
  4. Python: how to kill child process(es) when parent dies?
  5. Shebang Notation: Python Scripts on Windows and Linux?
  6. How to find the real user home directory using python?
  7. Packaging a Python script on Linux into a Windows executable
  8. Cross-platform subprocess with hidden window
  9. Python virtualenv questions
  10. Cross-platform space remaining on volume using python
  11. How to connect to a remote Windows machine to execute commands using python?
  12. How to open a file with the standard application?
  13. Imported module not found in PyInstaller
  14. How to use “/” (directory separator) in both Linux and Windows in Python?
  15. Python [Errno 98] Address already in use
  16. Python multiprocessing linux windows difference
  17. How to close a socket left open by a killed program?
  18. pip install fails with “connection error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:598)”
  19. socket.error: [Errno 10013] An attempt was made to access a socket in a way forbidden by its access permissions
  20. PyWin32 and Python 3.8.0
  21. Set up Python on Windows to not type “python” in cmd
  22. Fastest way to take a screenshot with python on windows
  23. Python socket connection timeout
  24. Install libxml2 and associated python bindings – Windows
  25. Interacting with program after execution
  26. How can I simulate input to stdin for pyunit?
  27. How to use socket in Python as a context manager?
  28. Error: No module named ‘fcntl’
  29. Python multiprocessing memory usage
  30. Python – Trap all signals

Leave a Comment