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-rw-r--r--bip-sendheaders.mediawiki4
1 files changed, 4 insertions, 0 deletions
diff --git a/bip-sendheaders.mediawiki b/bip-sendheaders.mediawiki
index df96f80..b1102b6 100644
--- a/bip-sendheaders.mediawiki
+++ b/bip-sendheaders.mediawiki
@@ -30,6 +30,10 @@ In the case of a reorg, where 1 or more blocks are disconnected, nodes currently
# Upon receipt of a "sendheaders" message, the node will be permitted, but not required, to announce new blocks by sending the header of the new block (along with any other blocks that a node believes a peer might need in order for the block to connect).
# Feature discovery is enabled by checking protocol version >= 70012
+==Additional constraints==
+
+As support for sendheaders is optional, software that implements this may also optionally impose additional constraints, such as only honoring sendheaders messages shortly after a connection is established.
+
==Backward compatibility==
Older clients remain fully compatible and interoperable after this change.