Python TypeError: an integer is required while working with Sockets

Question

Research:

Getting a "TypeError: an integer is required" in my script

https://github.com/faucamp/python-gsmmodem/issues/39

https://docs.python.org/2/howto/sockets.html

Here is my complete error output:

Traceback (most recent call last):
File "/home/promitheas/Desktop/virus/socket1/socket1.py", line 20, in <module>
createSocket()
File "/home/promitheas/Desktop/virus/socket1/socket1.py", line 15, in    createSocket
ServerSock.bind((socket.gethostname(), servPort))
File "/usr/lib/python2.7/socket.py", line 224, in meth
return getattr(self._sock,name)(*args)
TypeError: an integer is required

Code:

import socket

# Acquiring the local public IP address
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.connect(('8.8.8.8', 0))

# Defining some variables
servIpAddr = s.getsockname()[0]
servPort = ''
while ((len(servPort) < 4)): # and (len(servPort) > 65535)
    servPort = raw_input("Enter server port. Must be at least 4     digits.\n> ")

# Creating a socket to wait for a connection
def createSocket():
    ServerSock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    ServerSock.bind((socket.gethostname(), servPort)) # This is where the error occurs
    ServerSock.listen(5)
    (clientsocket, address) = ServerSock.accept()

if __name__ == "__main__":
    createSocket()

I'm not sure if there are any other errors, but I'm really stumped on this one. Please ask if you need any other info, and thanks in advance!

Kevin · Accepted Answer · 2015-01-28 18:20:32Z

7

It looks like the second element of the address tuple needs to be an integer. From the documentation:

A pair (host, port) is used for the AF_INET address family, where host is a string representing either a hostname in Internet domain notation like 'daring.cwi.nl' or an IPv4 address like '100.50.200.5', and port is an integer.

Try converting servPort to an integer before using it in bind.

servPort = ''
while ((len(servPort) < 4)): # and (len(servPort) > 65535)
    servPort = raw_input("Enter server port. Must be at least 4     digits.\n> ")
servPort = int(servPort)

answered Jan 28, 2015 at 18:20

Kevin

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huderlem · Accepted Answer · 2015-01-28 18:22:42Z

1

servPort must be an integer. You currently have it set to a string the user enters. Try casting the raw_input to an int using int(servPort).

answered Jan 28, 2015 at 18:22

huderlem

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