Python how to check and respond to a particular string in socket data?

Question

I am new to Python and would appreciate some help. My server receives any kind of data from the client. How can I modify the server code such that when it receives a certain string of text it responds with a particular string of text?

E.g. Client sends *101# and Server responds with Hello World

but if the client sends *102# Server would respond with Sorry

Thanks Graham

Server

from socket import *

serverHost=''
serverport=50007

#open socket to listen 

sSock = socket(AF_INET,SOCK_STREAM)
sSock.bind((serverHost,serverport))
sSock.listen(3)

#handle connection
while 1:
    conn,addr = sSock.accept()
    print ('Client Connection:', addr)
    while 1:
        data = conn.recv(1024)
        if not data: break
        print (' Server Received:', data)
        newData = data.replace('Client','Processed')
        conn.send(newData)

conn.close()

Client

import sys
from socket import  *

serverHost = 'localhost'
serverPort = 50007

message = ['*325#']

if len(sys.argv) > 1:
    serverHost = sys.argv[1]

#create my socket
sSock = socket(AF_INET, SOCK_STREAM)


#connect to server 
sSock.connect((serverHost, serverPort))


#send a message
for item in message:
    sSock.send(item)
    data = sSock.recv(1024)
    print ('Client received: ', 'data')

sSock.close()

William McBrine · Accepted Answer · 2014-03-02 01:21:15Z

1

Well, just take:

newData = data.replace('Client','Processed')

and replace it with something like:

if data == '*101#':
    newData = 'Hello World'
elif data == '*102#':
    newData = 'Sorry'
else:
    newData = data.replace('Client','Processed')

Not that this is optimal, but it should get you started.

answered Mar 2, 2014 at 1:21

William McBrine

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