python 3.3 socket TypeError

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You need to encode the string in data to a buffer using the appropriate codepage. For example:

data = input('> ')
if not data:
    break
tcpCliSock.send(data.encode('utf-8'))

The server code needs to change too:

response = '[%s] %s' % (ctime(), data.decode('utf-8'))
tcpCliSock.send(response.encode('utf-8'))

See more at:

How do I convert a string to a buffer in Python 3.1?

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khateeb
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khateeb

Senior Software Engineer with experience in Data Analytics, React Native, Android, Roku, MongoDB, and web apps using Spring & Struts.

Updated on September 14, 2022

Comments

  • khateeb
    khateeb over 1 year

    I am trying to make a timestamp server and client. The client code is:

    from socket import *
    
    HOST = '127.0.0.1' # or 'localhost'
    PORT = 21567
    BUFSIZ = 1024
    ADDR = (HOST, PORT)
    
    tcpCliSock = socket(AF_INET, SOCK_STREAM)
    tcpCliSock.connect(ADDR)
    
    while True:
        data = input('> ')
        if not data:
            break
        tcpCliSock.send(data)
        data = tcpCliSock.recv(BUFSIZ)
        if not data:
            break
        print(data.decode('utf-8'))
    
    tcpCliSock.close()
    

    and the server code is:

    from socket import *
    from time import ctime
    
    HOST = ''
    PORT = 21567
    BUFSIZ = 1024
    ADDR = (HOST, PORT)
    
    tcpSerSock = socket(AF_INET, SOCK_STREAM)
    tcpSerSock.bind(ADDR)
    tcpSerSock.listen(5)
    
    while True:
        print('waiting for connection...')
        tcpCliSock, addr = tcpSerSock.accept()
        print('connected from: ', addr)
    
        while True:
            data = tcpCliSock.recv(BUFSIZ)
            if not data:
                break
            tcpCliSock.send('[%s] %s' % (bytes(ctime(), 'utf-8'), data))
    
        tcpCliSock.close()
    tcpSerSock.close()
    

    The server is working fine but when I send any data to the server from the client I get the following error:

    File "tsTclnt.py", line 20, in <module>
        tcpCliSock.send(data)
    TypeError: 'str' does not support the buffer interface