From dea7ef364c1a56e0313d275770d80efa22fa90fc Mon Sep 17 00:00:00 2001
From: David Hill <dhill@mindcry.org>
Date: Fri, 13 Mar 2015 16:23:21 -0400
Subject: [PATCH] Ignore getaddr requests from outbound peers.

This change reduces fingerprinting attacks and
mimics Bitcoin Core commit
dca799e1db6e319fdd47e0bfdb038eab0efabb85
---
 peer.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/peer.go b/peer.go
index 2bce1838..0f5ccb1a 100644
--- a/peer.go
+++ b/peer.go
@@ -1150,6 +1150,12 @@ func (p *peer) handleGetAddrMsg(msg *wire.MsgGetAddr) {
 		return
 	}
 
+	// Do not accept getaddr requests from outbound peers.  This reduces
+	// fingerprinting attacks.
+	if !p.inbound {
+		return
+	}
+
 	// Get the current known addresses from the address manager.
 	addrCache := p.server.addrManager.AddressCache()