feat: use bitswap fetch queue #216
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When we call `blockstore.putMany`, some implementations will batch up all the `put`s and write them at once. This means that `blockstore.has` might not return `true` for a little while - if another request for a given block comes in before `blockstore.has` returns `true` it'll get added to the want list. If the block then finishes it's batch and finally a remote peer supplies the wanted block, the notifications that complete the second block request will never get sent and the process will hang idefinately. The change made here is to separate the sending of notifications out from putting things into the blockstore. If the blockstore has a block, but the block is still in the wantlist, send notifications that we now have the block.
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My feeling is that this module has too many places that hold state, so any solution should not add new places for state to hide. |
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Allow multiple concurrent requests for the same block