From 22f9b069035c9ba0416a62714db167eea5ba762f Mon Sep 17 00:00:00 2001
From: Jeff Garzik <jgarzik@exmulti.com>
Date: Mon, 24 Sep 2012 13:53:44 -0400
Subject: Send 'mempool' P2P command at the start of each P2P session to query
 remote node mempool contents.

---
 src/main.cpp | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'src/main.cpp')

diff --git a/src/main.cpp b/src/main.cpp
index fbaf05dfc..d1f84a12e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2404,6 +2404,14 @@ bool static AlreadyHave(CTxDB& txdb, const CInv& inv)
 
 
 
+static bool NodeRecentlyStarted()
+{
+    extern int64 nTimeNodeStart;
+    int64 timediff = GetTime() - nTimeNodeStart;
+
+    return (timediff < (2 * 60 * 60));
+}
+
 
 // The message start string is designed to be unlikely to occur in normal data.
 // The characters are rarely used upper ASCII, not valid as UTF-8, and produce
@@ -2510,6 +2518,12 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
             }
         }
 
+        // Trigger download of remote node's memory pool
+        if (!IsInitialBlockDownload() && !pfrom->fInbound &&
+            !pfrom->fClient && NodeRecentlyStarted() &&
+            pfrom->nVersion >= MEMPOOL_GD_VERSION)
+            pfrom->PushMessage("mempool");
+
         // Ask the first connected node for block updates
         static int nAskedForBlocks = 0;
         if (!pfrom->fClient && !pfrom->fOneShot &&
-- 
cgit v1.2.3