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Update specs/networking/rpc-interface.md 

Co-Authored-By: mslipper <me@matthewslipper.com>
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jannikluhn 2019-03-13 21:55:59 -07:00 committed by GitHub
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@ -201,7 +201,7 @@ Send a list of block roots and slots to the peer.
Requests beacon block headers from the peer starting from `(start_root, start_slot)`. The response MUST contain no more than `max_headers` headers. `skip_slots` defines the maximum number of slots to skip between blocks. For example, requesting blocks starting at slots `2` a `skip_slots` value of `2` would return the blocks at `[2, 4, 6, 8, 10]`. In cases where a slot is empty for a given slot number, the closest previous block MUST be returned. For example, if slot `4` were empty in the previous example, the returned array would contain `[2, 3, 6, 8, 10]`. If slot three were further empty, the array would contain `[2, 6, 8, 10]` - i.e., duplicate blocks MUST be collapsed.
The function of the `skip_slots` parameter helps facilitate light client sync - for example, in [#459](https://github.com/ethereum/eth2.0-specs/issues/459) - and allows clients to balance the peers from whom they request headers. Client could, for instance, request every 10th block from a set of peers where each per has a different starting block in order to populate block data.
The function of the `skip_slots` parameter helps facilitate light client sync - for example, in [#459](https://github.com/ethereum/eth2.0-specs/issues/459) - and allows clients to balance the peers from whom they request headers. Clients could, for instance, request every 10th block from a set of peers where each per has a different starting block in order to populate block data.
### Beacon Block Bodies