***************************************
* HTTP domain crawler *
***************************************
This is probably one of the most stupid things I ever made, 
but I don't like to drop already typed code.
It is an HTTP crawler which looks for domains in <a> tags
and sotres them into a sqlite database next to their IP address.
It works recursively among the stored domains.
So in theory it can walk arround all the existing Internet.
Warning: It is a proof of concept! Very inneficient and probably buggy.
Dependences: pyton2, beautifulsoup, sqlite3, urlib
The usage is very simple, here an example:
p4u@eni4c:~/python-git/domainCrawler (master)$ python2 domainCrawler.py 
Domain Crawler
Usage: domaincrawler <option> [params]
Options:
		-n <filename> : Creates new database named filename
		-c <database> <URL> <#threads> : Starts crawling process from given URL using database
		-a <database> : List all domains stored in database
		-h : Shows this help
p4u@eni4c:~/python-git/domainCrawler (master)$ python2 domainCrawler.py -n domains
New database created at file domains
p4u@eni4c:~/python-git/domainCrawler (master)$ python2 domainCrawler.py -a domains
p4u@eni4c:~/python-git/domainCrawler (master)$ python2 domainCrawler.py -c domains http://slashdot.com 12
## STARTING MAIN THREAD ##
|Crawling: http://slashdot.com|
## STARTING THREADS ##
|----------------------------
| Active threads: 2
| Queue size: 0
|----------------------------
|----------------------------
| Active threads: 2
| Queue size: 0
|----------------------------
|----------------------------
| Active threads: 2
| Queue size: 0
|----------------------------
|Crawling: http://ad.doubleclick.net|
|Crawling: http://techreport.com|
|----------------------------
| Active threads: 2
| Queue size: 33
|----------------------------
|Crawling: http://networkworld.com|
|Crawling: http://www.networkworld.com|
|Crawling: http://www.medicaldaily.com|
|Crawling: http://singularityhub.com|
|Crawling: http://thenextweb.com|
|Crawling: http://motherboard.vice.com|
|Crawling: http://theintelhub.com|
|Crawling: http://www.nature.com|
|Crawling: http://slashdot.org|
|Crawling: http://torrentfreak.com|
|Crawling: http://bgr.com|
|----------------------------
| Active threads: 12
| Queue size: 26
|----------------------------
|Crawling: http://www.ornl.gov|
|Crawling: http://paritynews.com|
|----------------------------
| Active threads: 12
| Queue size: 30
|----------------------------
|Crawling: http://tech.slashdot.org|
|Crawling: http://www.ubuntuvibes.com|
Cannot resolve lib1.isd.ornl.gov:8182
|----------------------------
| Active threads: 12
| Queue size: 35
|----------------------------
|----------------------------
| Active threads: 12
| Queue size: 35
|----------------------------
[CTRL+C]
p4u@eni4c:~/python-git/domainCrawler (master)$ python2 domainCrawler.py -a domains
ad.doubleclick.net -> 209.85.148.148
techreport.com -> 74.200.65.212
networkworld.com -> 65.214.57.165
www.networkworld.com -> 88.221.203.47
www.medicaldaily.com -> 209.116.59.144
singularityhub.com -> 199.27.134.217
thenextweb.com -> 184.106.146.102
motherboard.vice.com -> 184.73.209.110
theintelhub.com -> 208.109.162.209
www.nature.com -> 213.248.113.192
slashdot.org -> 216.34.181.45
torrentfreak.com -> 173.193.242.225
bgr.com -> 72.233.2.58
www.ornl.gov -> 128.219.176.20
paritynews.com -> 174.122.46.8
tech.slashdot.org -> 216.34.181.48
www.ubuntuvibes.com -> 209.85.148.121
roblimo.com -> 216.239.38.21
richarddawkinsfoundation.org -> 174.129.212.2
richarddawkins.net -> 75.101.145.87
en.wikipedia.org -> 91.198.174.225
www.securityweek.com -> 173.203.107.14
www.itu.int -> 156.106.202.5
twitter.com -> 199.59.150.39
www.facebook.com -> 66.220.152.32
rss.slashdot.org -> 209.85.148.121
freshmeat.net -> 216.34.181.101
feedproxy.google.com -> 209.85.148.118
freecode.com -> 216.34.181.104
geek.net -> 216.34.181.202
geeknetmedia.com -> 216.34.181.238
slashdot.jp -> 202.221.179.13
www.doubleclick.com -> 209.85.148.102
www.google.com -> 173.194.78.103
qosim.doubleclick.net -> 216.73.92.91
www.twitter.com -> 199.59.150.39
t.co -> 199.16.156.11
virtacore.com -> 69.65.110.234
techreport.pricegrabber.com -> 64.156.13.50
www.mars.com -> 213.248.113.202
arabicedition.nature.com -> 210.168.91.210
www.directive21.com -> 199.27.134.133
blogs.nature.com -> 199.168.13.95
www.purestcolloids.com -> 50.97.178.200
www.natureasia.com -> 210.168.91.210
network.nature.com -> 213.248.113.194
www.therawfoodworld.com -> 67.199.120.50
www.sbkb.org -> 128.6.20.132
doublegain.leanbodrep.hop.clickbank.net -> 74.63.153.62
btguard.com -> 209.44.102.196
bit.ly -> 69.58.188.39
a.collective-media.net -> 88.221.236.74
www.theintelhub.com -> 208.109.162.209
ryandownie.com -> 209.240.81.170
www.shadethemotionpicture.com -> 208.109.162.209
resources.networkworld.com -> 65.221.110.118
www.youtube.com -> 209.85.148.136
itjobs.networkworld.com -> 64.13.138.107
creativecommons.org -> 72.51.46.230
solutioncenters.networkworld.com -> 65.221.110.105
abcnews.go.com -> 68.71.212.40
sustainability-ornl.org -> 128.219.14.56
latino.foxnews.com -> 213.248.113.178
ut-battelle.org -> 128.219.176.20
cloudflare.com -> 173.245.60.249
events.networkworld.com -> 23.23.121.255
neutrons.ornl.gov -> 128.219.176.24
www.nytimes.com -> 170.149.168.130
jobs.ornl.gov -> 128.219.176.20
events.networkworld.com -> 23.21.174.147
www.linkedin.com -> 216.52.242.80
www.squidoo.com -> 64.225.155.21
www.flickr.com -> 87.248.105.216
m.networkworld.com -> 50.57.117.239
m.networkworld.com -> 50.57.117.239
www.americanpearl.com -> 68.142.205.137
www.techwords.com -> 64.124.14.63
www.singularityweblog.com -> 50.57.215.80
www.ers.usda.gov -> 162.79.16.192
www.blogger.com -> 209.85.148.191
careers.idg.com -> 63.211.160.21
www.jpss.noaa.gov -> 140.90.33.21
www.networkworldmediakit.com -> 66.96.147.104
www.jpost.com -> 94.127.75.170
www.ctvnews.ca -> 213.248.113.179
feeds.feedburner.com -> 209.85.148.118
www.monkey.org -> 75.102.5.19
www.AWAKEN.com -> 74.220.215.227
www.passagesmalibu.com -> 72.52.210.179
spectrum.ieee.org -> 213.248.113.177
go.usa.gov -> 216.128.241.32
3.bp.blogspot.com -> 209.85.148.139
www.thesundaytimes.co.uk -> 213.248.113.210
www.oakridge.doe.gov -> 198.207.239.8
truejay.com -> 72.32.231.8
alt.engadget.com -> 195.93.85.49
www.stylesurge.com -> 64.13.239.189
images.medicaldaily.com -> 68.232.35.229
lenashagieva.com -> 173.203.204.123
www.thisrecording.com -> 65.39.205.54
www.singularityhub.com -> 66.240.232.112
www.nih.gov -> 137.187.25.43
www.itworld.com -> 23.21.168.45
tiheum.deviantart.com -> 199.15.160.100
www.techhive.com -> 70.42.185.60
bldgblog.blogspot.com -> 209.85.148.132
matrixsynth.blogspot.com -> 209.85.148.132
www.cdc.gov -> 213.248.113.211
negrophonic.com -> 69.163.184.27
www.counselheal.com -> 209.116.59.144
thoughtcatalog.com -> 76.74.254.120
www.ericmmartin.com -> 204.197.248.152
betanews.com -> 69.65.109.143
science.energy.gov -> 205.254.148.104
thediplomat.com -> 69.164.223.86
www.devour.com -> 50.23.249.68
techcrunch.com -> 74.200.247.61
1.bp.blogspot.com -> 209.85.148.139
www.economist.com -> 64.14.173.20
code.google.com -> 209.85.148.139
thesocietypages.org -> 69.164.207.151
c3046032.r32.cf0.rackcdn.com -> 146.82.2.122
www.properlydecent.com -> 46.19.38.61
c3414097.r97.cf0.rackcdn.com -> 146.82.2.99
www.naturenplanet.com -> 209.116.59.158
p4u@eni4c:~/python-git/domainCrawler (master)$ ls
domainCrawler.py domains
p4u@eni4c:~/python-git/domainCrawler (master)$