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Original file line number Diff line number Diff line change 1+ # client.py
2+
3+ import socket
4+
5+ HOST , PORT = '127.0.0.1' , 1400
6+
7+ s = socket .socket (
8+
9+ socket .AF_INET # ADDRESS FAMILIES
10+ #Name Purpose
11+ #AF_UNIX, AF_LOCAL Local communication
12+ #AF_INET IPv4 Internet protocols
13+ #AF_INET6 IPv6 Internet protocols
14+ #AF_APPLETALK Appletalk
15+ #AF_BLUETOOTH Bluetooth
16+
17+
18+ socket .SOCK_STREAM # SOCKET TYPES
19+ #Name Way of Interaction
20+ #SOCK_STREAM TCP
21+ #SOCK_DGRAM UDP
22+ )
23+ s .connect ((HOST , PORT ))
24+
25+ s .send ('Hello World' .encode ('ascii' ))#in UDP use sendto()
26+ data = s .recv (1024 )#in UDP use recvfrom()
27+
28+ s .close ()#end the connection
29+ print (repr (data .decode ('ascii' )))
Original file line number Diff line number Diff line change 1+ # server.py
2+
3+ import socket
4+
5+ HOST , PORT = '127.0.0.1' , 1400
6+
7+ s = socket .socket (socket .AF_INET , socket .SOCK_STREAM )#refer to client.py
8+ s .bind ((HOST , PORT ))
9+ s .listen (1 )#listen for 1 connection
10+
11+ conn , addr = s .accept ()#start the actual data flow
12+
13+ print ('connected to:' , addr )
14+
15+ while 1 :
16+ data = conn .recv (1024 ).decode ('ascii' )#receive 1024 bytes and decode using ascii
17+ if not data :
18+ break
19+ conn .send ((data + ' [ addition by server ]' ).encode ('ascii' ))
20+
21+ conn .close ()
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