getFilterChanges

Polling method for a filter, which returns an array of logs which occurred since last poll.

Filter must be created by calling either eth_newFilter or eth_newBlockFilter.

EXAMPLE

## JSON-RPC over HTTPS POST
curl https://mainnet-slice-rpc.com \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getFilterChanges","params":["0x10ff0bfbedb01f0dbd4106d14eb719ec38b6eb5b821c"],"id":1}'

## JSON-RPC over WSS
wscat -c ws://mainnet-slice-rpc.com
>{"jsonrpc":"2.0","method":"eth_getFilterChanges","params":["0x10ff0bfbedb01f0dbd4106d14eb719ec38b6eb5b821c"],"id":1}

RESPONSE

RESULT FIELDS

  • LOG OBJECT ARRAY - Array of log objects, or an empty array if nothing has changed since last poll.

    • For filters created with eth_newBlockFilter the return are block hashes (32 Bytes), e.g. ["0x3454645634534..."].

    • For filters created with eth_newFilter logs are objects with following params:

  • removed: true when the log was removed, due to a chain reorganization. false if its a valid log.

  • logIndex: integer of the log index position in the block. null when its pending log.

  • transactionIndex: integer of the transactions index position log was created from. null when its pending log.

  • transactionHash: 32 Bytes - hash of the transactions this log was created from. null when its pending log.

  • blockHash: 32 Bytes - hash of the block where this log was in. null when its pending. null when its pending log.

  • blockNumber: the block number where this log was in. null when its pending. null when its pending log.

  • address: 20 Bytes - address from which this log originated.

  • data: DATA - contains the non-indexed arguments of the log.

  • topics: Array of DATA - Array of 0 to 4 32 Bytes DATA of indexed log arguments. (In solidity: The first topic is the hash of the signature of the event (e.g. Deposit(address,bytes32,uint256)), except you declared the event with the anonymous specifier.)

BODY

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