Question

Write two python codes for a TCP client and a server using a Socket/Server Socket. The client sends a file name to the server. The server checks if there is any integer value in the file content. If there is an integer number, the server will send a message to the client “Integer exists” otherwise, the message “Free of Integers”

Answer 1

We send the file name "test.txt" to the server. The server reads the file, and sends the response appropriately.

Code server.py:

import socket 
   
# take the server name and port name 
host = 'local host'
port = 5000
   
# create a socket at server side 
# using TCP / IP protocol 
s = socket.socket(socket.AF_INET,  
                  socket.SOCK_STREAM) 
   
# bind the socket with server 
# and port number 
s.bind(('', port)) 
   
# allow maximum 1 connection to 
# the socket 
s.listen(1) 
   

# wait till a client accept 
# connection 
c, addr = s.accept() 

filename = c.recv(1024).decode()#receiving the filename from the client


value = "Free of Integers"

f =  open(filename,'r')
while True:
    #read by character
    char = f.read(1)
    if not char:
        break
    if(char.isdigit()):
        value = "Integer exists"
        break


#sending response to client
c.send(value.encode())
# disconnect the server 
c.close() 

Code client.py :

import socket 
   
# take the server name and port name 
   
host = 'local host'
port = 5000
   
# create a socket at client side 
# using TCP / IP protocol 
s = socket.socket(socket.AF_INET, 
                  socket.SOCK_STREAM) 
   
# connect it to server and port  
# number on local computer. 
s.connect(('127.0.0.1', port)) 

filename = "test.txt"#file name to be sent to the server
s.send(filename.encode())

# receive message string from 
# server, at a time 1024 B 
msg = s.recv(1024) 
   
# repeat as long as message 
# string are not empty 
while msg: 
    print(msg.decode()) 
    msg = s.recv(1024) 
  
# disconnect the client 
s.close() 

File:

Output: