Wars are for First World countries and irrational despots. This is the truth.
For a country like India, we first need an economic base or we will lose the country to even small problems like rationing.
Now, if we go to war, let's not make the assumption that it will never go nuclear, we need a system akin to a Nazi level martial law where any dissent is crushed through the use of force, so that there are no calls for separatism from certain pockets in India. And then, food and water will be rationed, most communication systems would only be for short messages to be used in emergencies, so no internet, no cellphone network etc. The current way of life in most cities will come to a halt. If the Indian public can accept this, we can go to war immediately.
Just our luck that we have irrational Third World despots as neighbours, so we have had the unfortunate privilege of actually fighting a few wars. India has always fought wars when wars were forced upon. Never has India been an aggressor, and this is because we have made the sensible decision of not taking such a step.
People in India are angry right now, hence the calls for war and whatnot. But the problem is, as
@Falcon has pointed out many times, Pakistan is doing a better job of killing itself without India having to do a thing. Let's not become the excuse they need to unit against India.
Pakistan is imploding. Think about it, over the next 5 years Pak's GDP is not expected to grow more than 4%. Even with low oil prices, they have a severe BoP crisis. And in return, Pak's population growth is as high as ever. Their population growth is twice that of India's and their GDP growth is expected to be half of India's. This country has no real future. So this is where we should really focus on. We need to deny them the ability to bounce back.
We most definitely need revenge attacks, and I'm sure the forces are already planning it out. But attacking your own country and countrymen only because you want something to happen to your standards just to satiate your own anger should come to an end.
If you really want to hurt Pakistan, you have to think up ways that can actually bring them all the hurt you can without getting hurt yourself. India is too big and powerful to have 'fair fight' as the only option.