In the case the full block log is not available, prevent handshake message being sent sync-fetch count times to peer. For example, if the client requested 1000 blocks not available by the node, net_plugin would respond with 1000 handshake messages. Disconnect from peer with benign_other so the peer will move on to a different peer to sync from. This is what we already do for blk_send_branch when a block is not available.
In the case the full block log is not available, prevent handshake message being sent sync-fetch count times to peer. For example, if the client requested 1000 blocks not available by the node,
net_pluginwould respond with 1000 handshake messages. Disconnect from peer withbenign_otherso the peer will move on to a different peer to sync from. This is what we already do forblk_send_branchwhen a block is not available.Resolves #790