Luke Luke - 1 month ago 14
Python Question

TypeError argument must be an int or have a fileno() method

Seen here http://stackoverflow.com/search?q=TypeError+argument+must+be+an+int+or+have+a+fileno%28%29+method

But just can't quite find my answer. I am trying out a chat script

Server side runs perfectly fine.

# chat_server.py

import sys
import socket
import select

HOST = 'localhost'
SOCKET_LIST = []
RECV_BUFFER = 4096
PORT = 9009

def chat_server():

server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
server_socket.bind((HOST, PORT))
server_socket.listen(10)

# add server socket object to the list of readable connections
SOCKET_LIST.append(server_socket)

print("Chat server started on port " + str(PORT))

while 1:

# get the list sockets which are ready to be read through select
# 4th arg, time_out = 0 : poll and never block
ready_to_read,ready_to_write,in_error = select.select(SOCKET_LIST,[],[],0)

for sock in ready_to_read:
# a new connection request recieved
if sock == server_socket:
sockfd, addr = server_socket.accept()
SOCKET_LIST.append(sockfd)
print("Client (%s, %s) connected" % addr)

broadcast(server_socket, sockfd, "[%s:%s] entered our chatting room\n" % addr)

# a message from a client, not a new connection
else:
# process data recieved from client,
try:
# receiving data from the socket.
data = sock.recv(RECV_BUFFER)
if data:
# there is something in the socket
broadcast(server_socket, sock, "\r" + '[' + str(sock.getpeername()) + '] ' + data)
else:
# remove the socket that's broken
if sock in SOCKET_LIST:
SOCKET_LIST.remove(sock)

# at this stage, no data means probably the connection has been broken
broadcast(server_socket, sock, "Client (%s, %s) is offline\n" % addr)

# exception
except:
broadcast(server_socket, sock, "Client (%s, %s) is offline\n" % addr)
continue

server_socket.close()

# broadcast chat messages to all connected clients
def broadcast (server_socket, sock, message):
for socket in SOCKET_LIST:
# send the message only to peer
if socket != server_socket and socket != sock :
try :
socket.send(message)
except :
# broken socket connection
socket.close()
# broken socket, remove it
if socket in SOCKET_LIST:
SOCKET_LIST.remove(socket)

if __name__ == "__main__":

sys.exit(chat_server())


But client

import sys
import socket
import select

def chat_client():

host = "127.0.0.1"
port = 9009

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.settimeout(2)

# connect to remote host
try :
s.connect((host, port))
except :
print('Unable to connect')
sys.exit()

print('Connected to remote host. You can start sending messages')
sys.stdout.write('[Me] '); sys.stdout.flush()

while 1:
socket_list = [sys.stdin, s]
potential_errs=[]

# Get the list sockets which are readable
ready_to_read,ready_to_write, in_error = select.select(socket_list , host, int(1))

for sock in ready_to_read:
if sock == s:
# incoming message from remote server, s
data = sock.recv(4096)
if not data :
print('\nDisconnected from chat server')
sys.exit()
else :
#print data
sys.stdout.write(data)
sys.stdout.write('[Me] '); sys.stdout.flush()

else :
# user entered a message
msg = sys.stdin.readline()
s.send(msg)
sys.stdout.write('[Me] '); sys.stdout.flush()

if __name__ == "__main__":

sys.exit(chat_client())


Has run from cmd, not IDLE because of issues (read something about it relating to my issue)

Traceback

line 50 in module

sys.exit(chat_client())

line 28 in chat_client

ready_to_read,ready_to_write, in_error = select.select(socket_list , host, int(1))

TypeError: argument must be an int or have a fileno() method


Any help would be very good.

Answer

Turns out that select doesn't work with non-socket objects on windows.

( ͡° ͜ʖ ͡°)