socket tcp server | client socket tcp

# ### socket server 
Import socket 
# create a socket object 
SK = socket.socket () 
# ip and port binding (registration network, let others find you) 
# "127.0.0.1" default of the machine ip 
sk.bind ( ( "127.0.0.1", 9000)) 
# turn monitor (wait for others to connect to the server) 
sk.listen () 

'' ' 
# establish a three-way handshake to establish a connection, plus a blocked program, 
the establishment of three-way handshake If it fails, the program is not down performing 
'' ' 
Conn, addr = sk.accept () 
Print (Conn, addr) 
# 1024 the maximum received a single byte. blockage added again, no data is received, the code is not executed down 
msg = conn. the recv (1024) 
# restored to the byte stream of a normal character string (character string into a byte stream parsing) 
Print (msg.decode ( "UTF-. 8")) 

# sent to the client data 
conn.send ( "I really good yo ".encode (" UTF-8 ")) 


# waved performed four times, disconnected 
conn.Close () 
# close the socket object, return the occupied port number 
sk.close ()

# ### socket client 

Import socket 

# produce a socket object 
SK = socket.socket () 
sk.connect (( "127.0.0.1", 9000)) 

# sends a message (transmitted binary byte stream) 
sk.send ( "hello what, I'm so yo" .encode ( "UTF-8")) 

# accept message (after sending, plus program blocks, waiting for the server response data, the largest recipient of 1024 bytes) 
RES = sk.recv (1024) 
strvar = res.decode ( "UTF-. 8") 
Print (strvar) 

# close the connection 
sk.close ()