[Bitcoin-development] New P2P commands for diagnostics, SPV clients

Simon Barber simon at superduper.net
Fri Jun 15 15:43:04 UTC 2012


separate filterinit / filterload - so you can do a new filterload later 
on if your list changes, without the privacy implications of filteradd.

Simon


On Thu 14 Jun 2012 04:52:29 AM PDT, Mike Hearn wrote:
>> filterinit(false positive rate, number of elements): initialize
>> filterload(data): input a serialized bloom filter table metadata and data.
>
> Why not combine these two?
>
>> 'filterload' and 'filteradd' enable special behavior changes for
>> 'mempool' and existing P2P commands, whereby only transactions
>> matching the bloom filter will be announced to the connection, and
>> only matching transactions will be sent inside serialized blocks.
>
> Need to specify the format of how these arrive. It means that when a
> new block is found instead of inv<->getdata<->block we'd see something
> like  inv<->getdata<->merkleblock where a "merkleblock" structure is a
> header + list of transactions + list of merkle branches linking them
> to the root. I think CMerkleTx already knows how to serialize this,
> but it redundantly includes the block hash which would not be
> necessary for a merkleblock message.
>
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