FAQs & Troubleshooting

Get answers to commonly asked questions and issues faced by users

FAQs

Somnia Reactivity is currently only available on TESTNET

How Do I Fetch Historical Data?

To get event and state data from before an application subscription was created there are a few approaches:

• Use a traditional indexer or tooling such as a subgraph

• Build a custom indexer which starts at an earlier block and persists data received from Somnia reactivity into a DB that can be queried from the chain

• Directly query historical data from the chain from within your application (generally inefficient)

Troubleshooting

Issues starting websocket subscriptions

Two core reasons for this:

1. The chain definition for the Somnia testnet or mainnet does not contain a wss url

2. The wss url does not support the reactivity feature set or the rpc provider is having issues

Too many active websocket subscriptions

Often seen in React applications where useEffect is not being used correctly or not used at all to start an event subscription leading to attempts to create a subscription every time the page renders

Solidity handler not being invoked

Three core reasons for this:

1. Invalid implementation of SomniaEventHandler interface

2. No active subscription

3. Insufficient subscription balance