Subscription problem with light.js

[amaury1093]

On the TokensList page, we subscribe e.g. to balanceOf$(myAddress). This creates a WS subscription to eth_blockNumber (light client listens to new head, updates balance on new block).

Now when we switch to the Send Ether page, this is what happens:

• TokensList calls componentWillUnmount, so unsubscribes from the Observable balanceOf$(myAddress)
• balanceOf$(myAddress) will have a subscription count of 0, so the underlying WS subscription is closed (that's a feature of light.js)
• TxForm calls componentWillMount, and will subscribe again to balanceOf$(myAddress), which will create a new WS subscription to eth_blockNumber

I'm still not sure where to solve this: on the light.js level or on the Fether level.

[axelchalon]

Would be fixed with https://github.com/paritytech/js-libs/issues/45 if we decide to go that direction