http://users.ictp.it/~radionet/1997_workshop/networking/notes/tsld006.htm
gaia.cs.umass.edu/~bing/cs453-fall-2004/notes/index.html
gaia.cs.umass.edu/~bing/cs453-fall-2004/notes/index.html
Socket Programming
http://www.cse.iitk.ac.in/~dheeraj/cs425/lec19.html
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