Network programming in Python

Socket () function:

Use the Socket.socket () function to create a socket:

Socket (socket_family,socket_type,protocol=0)

Socket_familu can be af_inet or af_unix.socket_type can be sock_stream (connection-oriented) or SOCK_DGRAM (for non-connected).

For example, create a TCP/IP socket:

Tcpsock=socket.socket (Socket.af_inet,socket. SOCK_STREAM)

To create a UDP/IP socket:

Udpsock=socket.socket (Socket.af_inet,socket. SOCK_DGRAM)

Socket Object methods:

server-side socket function
s.bind ()	bind address (host, Port number) to socket
s.listen ()	start TCP Listener
s.accept ()	Passive reception of TCP client connections, (blocking) waiting for a connection to arrive

client socket function
s.connect ()	active initialization T CP Server Connection
s.connect_ex ()	connect () function, which returns an error code when an error occurs instead of throwing an exception

socket function for public use	description
s.recv ()	receive TCP data
s.send ()	send TCP data
s.sendall ()	full send TCP Data
s.recvfrom ()	receive UDP data
s.sendto ()	send UDP data

socket function for public use	description
s.getpeername ()	The address of the remote end of the current socket is connected to
s.getsockname ()	The address of the current socket
s.getsockopt ()	Returns the parameter of the specified socket
s.setsockopt ()	Set the parameters of the specified socket
s.close ()	close socket

s.setblocking ()	Set the blocking and non-blocking mode for sockets (when True is blocked, false is non-blocking)
s.settimeout ()
s.gettimeout ()	timeout to get blocked socket operation

Functions for file-oriented sockets	Describe
S.fileno ()	File descriptor for sockets
S.makefile ()	Create a file associated with the socket

Network programming in Python