generate locator heights all the way down to 0 by powers of 2 (#378)

p2p/src/lib.rs

@@ -55,5 +55,5 @@ mod types;
 pub use server::{DummyAdapter, Server};
 pub use peer::Peer;
 pub use types::{Capabilities, Error, NetAdapter, P2PConfig, PeerInfo, FULL_HIST, FULL_NODE,
-                MAX_BLOCK_HEADERS, MAX_LOCATORS, MAX_PEER_ADDRS, UNKNOWN};
+                MAX_BLOCK_HEADERS, MAX_PEER_ADDRS, UNKNOWN};
 pub use store::{PeerData, PeerStore, State};

p2p/src/types.rs

@@ -26,9 +26,6 @@ use core::core::hash::Hash;
 use core::core::target::Difficulty;
 use core::ser;
 
-/// Maximum number of hashes in a block header locator request
-pub const MAX_LOCATORS: u32 = 10;
-
 /// Maximum number of block headers a peer should ever send
 pub const MAX_BLOCK_HEADERS: u32 = 512;