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
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.)
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