socket.listen

socket.listen(backlog)

• This function starts listening for incoming connections
• Typically, this refers to the server socket
• The backlog represents a maximum number of pending connections the operating system should queue before connections are refused
• The backlog value should be between $1-5$

Example of listen

>>> import socket
>>> sock = socket(AF_INET, SOCK_STREAM)
>>> serv_addr = ('', 25000)  # server socket binds...
>>> sock.bind(serv_address)  # ...to port 25000
>>> sock.listen(5)  # only allow 5 client connections

References

• Python Essential Reference
• Documentation for socket API
• Python in a Nutshell