The 2 possible ways of inputting the link info for the overlay request are:

	Option 1: The user enters the link info on the webpage in the form of <src node id> <dest node id>
	  	  The node id is any integer between 0 and N-1 (N = no of overlay nodes specified by the user)
	  	  Each edge is entered on a separate line
	
	Option 2: The user uploads a SGB (Stanford GraphBase) file from which the link info would be read. 
		  Rest all information (like no of overlay nodes) has to be provided by user on the webpage

 
Sample Input by user:
--------------------

No of overlay Nodes: 5
Minimum overlay node available CPU(%): 3.76
Minimum Overlay link available bandwidth (Mbps): 1.29

Overlay Links:
0 2
1 4
2 3
1 2
0 3
1 0