Limit setAskFor and retire requested entries only when a getdata returns.

The setAskFor duplicate elimination was too eager and removed entries
 when we still had no getdata response, allowing the peer to keep
 INVing and not responding.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/net.h b/src/net.h
index 046811d54c..bf75899a40 100644
--- a/src/net.h
+++ b/src/net.h
@@ -58,6 +58,8 @@ static const bool DEFAULT_UPNP = false;
 #endif
 /** The maximum number of entries in mapAskFor */
 static const size_t MAPASKFOR_MAX_SZ = MAX_INV_SZ;
+/** The maximum number of entries in setAskFor (larger due to getdata latency)*/
+static const size_t SETASKFOR_MAX_SZ = 2 * MAX_INV_SZ;
 /** The maximum number of peer connections to maintain. */
 static const unsigned int DEFAULT_MAX_PEER_CONNECTIONS = 125;
 /** The default for -maxuploadtarget. 0 = Unlimited */