making a subscription based call to author_pendingExtrinsics

[zhoujs93]

Hi,

I was wondering if its possible to create a customized subscription endpoint so that it becomes something like subscribing to author_pendingExtrinsics when we connect to a custom rpc node (ie: built from rust code). For example, I was thinking of being able to continuously get result when a extrinsic arrives to the mempool

As far as I know, author_pendingExtrinsics in the rpc_request function retrieves more of a snapshot of current pending extrinsics.

Do you know if it makes sense to see if its possible to do something like subscribing to this endpoint instead ? Or could this be replicated by repeatedly calling rpc_request with a customized result_handler function and implementing a set to filter out existing extrinsic hashes that have been seen already

Thanks in advance