Report minfeefilter value in getpeerinfo rpc

Lowering the minimum relay fee is only useful when many nodes in the
p2p network also lower the fee, so to make it easier to understand
progress on that front, this includes the value of the minfeefilter in
getpeerinfo, so you at least have visibility to what fees your neighbours
are currently accepting.

4 files changed, 9 insertions, 0 deletions

diff --git a/src/net.cpp b/src/net.cpp
index ec4fa6c267..df2cb54b7a 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -715,6 +715,7 @@ void CNode::copyStats(CNodeStats &stats)
         X(nRecvBytes);
     }
     X(fWhitelisted);
+    X(minFeeFilter);
 
     // It is common for nodes with good ping times to suddenly become lagged,
     // due to a new block arriving or other large transfer.
diff --git a/src/net.h b/src/net.h
index f9cfea59b7..edd2f8cf0d 100644
--- a/src/net.h
+++ b/src/net.h
@@ -558,6 +558,7 @@ public:
     double dPingTime;
     double dPingWait;
     double dMinPing;
+    CAmount minFeeFilter;
     // Our address, as reported by the peer
     std::string addrLocal;
     // Address of this peer
diff --git a/src/rpc/net.cpp b/src/rpc/net.cpp
index 610a1fee6f..343b7d3b05 100644
--- a/src/rpc/net.cpp
+++ b/src/rpc/net.cpp
@@ -102,6 +102,7 @@ static UniValue getpeerinfo(const JSONRPCRequest& request)
             "       ...\n"
             "    ],\n"
             "    \"whitelisted\": true|false, (boolean) Whether the peer is whitelisted\n"
+            "    \"minfeefilter\": n,         (numeric) The minimum fee rate for transactions this peer accepts\n"
             "    \"bytessent_per_msg\": {\n"
             "       \"addr\": n,              (numeric) The total bytes sent aggregated by message type\n"
             "       ...\n"
@@ -169,6 +170,7 @@ static UniValue getpeerinfo(const JSONRPCRequest& request)
             obj.pushKV("inflight", heights);
         }
         obj.pushKV("whitelisted", stats.fWhitelisted);
+        obj.pushKV("minfeefilter", ValueFromAmount(stats.minFeeFilter));
 
         UniValue sendPerMsgCmd(UniValue::VOBJ);
         for (const mapMsgCmdSize::value_type &i : stats.mapSendBytesPerMsgCmd) {
diff --git a/test/functional/rpc_net.py b/test/functional/rpc_net.py
index 02114eca76..a46518200c 100755
--- a/test/functional/rpc_net.py
+++ b/test/functional/rpc_net.py
@@ -7,6 +7,8 @@
 Tests correspond to code in rpc/net.cpp.
 """
 
+from decimal import Decimal
+
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
@@ -21,6 +23,7 @@ class NetTest(BitcoinTestFramework):
     def set_test_params(self):
         self.setup_clean_chain = True
         self.num_nodes = 2
+        self.extra_args = [["-minrelaytxfee=0.00001000"],["-minrelaytxfee=0.00000500"]]
 
     def run_test(self):
         self._test_connection_count()
@@ -95,6 +98,8 @@ class NetTest(BitcoinTestFramework):
         # the address bound to on one side will be the source address for the other node
         assert_equal(peer_info[0][0]['addrbind'], peer_info[1][0]['addr'])
         assert_equal(peer_info[1][0]['addrbind'], peer_info[0][0]['addr'])
+        assert_equal(peer_info[0][0]['minfeefilter'], Decimal("0.00000500"))
+        assert_equal(peer_info[1][0]['minfeefilter'], Decimal("0.00001000"))
 
 if __name__ == '__main__':
     NetTest().main()