October 7, 2008 11:02pm pdt

1. pepr 124,305
2. RichieHin... 44,120
3. ramrom 37,663
4. mish33 29,290
5. LunarNRG 16,500
6. Adam314 9,500
7. clockwatc... 8,822
8. RobSamp... 6,440
9. hweber 5,600
10. efn 5,436
11. nochkin 4,900
12. girionis 4,500
13. sinoj 4,400
14. Shift-3 4,120
15. ee_cb 4,000
16. sungenw... 3,604
17. angelIII 3,500
17. hielo 3,500
17. saurabh726 3,500
20. HonorGod 2,875
21. SteveGTR 2,440
22. ozo 2,400
22. Tintin 2,400
24. Gns 2,000
24. sentner 2,000
24. itdrms 2,000
24. gemdeals... 2,000
24. sdstuber 2,000
24. agriesser 2,000
24. duz 2,000
24. oleber 2,000
24. maxim_leon 2,000
24. jaime_oliv... 2,000
24. ajexpert 2,000
24. B_Dorsey 2,000
24. exile_4 2,000
24. Skin-D33p 2,000
24. OriNetwo... 2,000
24. dennis_m... 2,000
24. rowejd 2,000
24. mzalfres 2,000
24. davidgeldr... 2,000
24. yuzh 2,000
24. JJunkins1 2,000

1. RichieHin... 267,190
2. pepr 260,201
3. mish33 119,419
4. ramrom 102,958
5. efn 46,926
6. rjkimble 42,210
7. cjjclifford 25,884
8. LunarNRG 16,500
9. Muflone 15,800
10. clockwatc... 13,282
11. Adam314 12,100
12. fridom 10,304
13. hweber 9,972
14. RobSamp... 9,840
15. EOL 9,423
16. b0lsc0tt 9,218
17. nochkin 7,900
18. HonorGod 6,675
19. ozo 6,480
20. amit_g 6,320
21. Chatable 5,835
22. evilrix 5,400
23. pYrania 5,250
24. ghostdog74 4,860
25. jaime_oliv... 4,800

04.11.2008 at 07:34AM PDT, ID: 23315202

	[x] Attachment Details

Python asyncore.dispatcher test not functioning as intended?

Asked by dr34m3rs in Python Scripting Language

Tags: Python

Hi Python Experts,

It is my understanding that the asyncore module is intended to provide an alternative to threading? Am I mistaken to think that my code should work in parallel and not sequential?

The test code is a simple IP scanner that will test one port in a given IP range. If I use threading I can get 40 scanners active at one time that don't block each other, however if I go with the asyncore style (which uses select() ), it becomes sequential... if you try this yourself, make sure you use a not so common port (8080 on a hosting IP range gives a good example of the behavior). Could it be something else on my system (Linux fedora 8)?

Thank you very much for any help.Start Free Trial

         
           
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             #!/usr/bin/python
 
import asyncore, socket
 
host = "(first 3 octets of an ip address)"
port = # a port goes here
 
class http_client(asyncore.dispatcher):
	def __init__(self, host, port):
		asyncore.dispatcher.__init__(self)
		self.host = host
		self.port = port
		self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
		self.setblocking(0)
		self.settimeout(3)
		print "Connecting to "+str(self.host)+" on port "+str(self.port)
		try:
			self.connect((self.host, self.port))
		except:
			self.close()
	def handle_connect(self):
		print str(self.host)+" on port "+str(self.port)+" OPEN"
		self.close()
	def handle_close(self):
		self.close()
	def handle_read(self):
		self.close()
	def writable(self):
		self.close()
	def handle_write(self):
		self.close()
 
digit = 1
while digit < 255:
	zhost = str(host)+'.'+str(digit)
	c = http_client(zhost, port)
	try:
		asyncore.loop()
	except: pass
	digit += 1

           
         

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Python asyncore.dispatcher test not functioning as intended?

Asked by dr34m3rs in Python Scripting Language

Tags: Python

About this solution