I wanted to make a server and a client with Python. It was supposed to make multiple connections, one, where the server is sending something to the client, and one where the client is sending something to the server.
The first connection worked fine, but the second one crashed with the message:
socket.error: [Errno 9] Bad file descriptor
Here is the Server:
import socket
import errno
import pickle
def Main():
host = '188.174.233.99'
port = 66666
all_text = ['text1', 'text2', 'text3']
all_description = ['Test \n Description1\n', 'Test \n Description1\n', 'Test \n Description1\n']
all_images = ['unlock.png', 'unlock.png', 'unlock.png']
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM, socket.IPPROTO_TCP)
s.bind((host, port))
s.listen(1)
while True:
c, addr = s.accept()
c.setblocking(0)
print "Connection from: " + str(addr)
command = c.recv(1024)
if command == 'GIVEALL':
textstring = pickle.dumps([all_text, all_images, all_description])#verwandelt Liste in String
c.send(textstring)
else:
try:
new_event = pickle.loads(command)
print new_event
caption = new_event[0]
image = new_event[1]
describtion = new_event[2]
city = new_event[3]
except:
pass
try:
c.close()
s.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
except socket.error as e:
if e.errno != errno.ECONNRESET:
raise
pass
if __name__ == '__main__':
Main()
And here is the Client:
import socket import pickle
from kivy.properties import StringProperty
from kivy.properties import NumericProperty
from kivy.properties import ListProperty
class Netclient(object):
def __init__(self):
self.s = socket.socket()
self.texte = []
self.current = 'All'
self.ip = '188.174.233.99'
self.port = 66666
def giveWid(self):
print 'give Widgets executed'
if self.current == 'All':
self.texte, self.images, self.description = self.sentHOT(self.ip, self.port)
return self.texte, self.images, self.description
def sentHOT(self, host, port):
self.s.connect((host, port))
self.s.send('GIVEALL')#sends command
recived_string = self.s.recv(1023)
more_text = pickle.loads(recived_string)#verwandelt string in liste
self.s.close()
print 'closed'
return more_text[0], more_text[1], more_text[2]
def add_event(self, caption, image, description, city='Pawonkow'):
new_event = [caption, image, description, city]
new_compact_event = pickle.dumps(new_event)
self.s.connect((self.ip, self.port))
self.s.send(new_compact_event)
self.s.close()
n = Netclient()
t, i, d = n.giveWid()
print t
n.add_event('new', 'new.png', 'ew event', 'Hanau')
The reason is that you are trying to reconnect a closed socket. You have to either create a new socket or reuse the old one as long as it's connected.
In method def sentHOT(...):
comment the line self.s.close()
and in method def add_event(...)
comment the line self.s.connect((self.ip, self.port))
then should work. Further, please take a look at this tutorial , it helps you with socket programming.
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