Merge #19464: net: remove -banscore configuration option

06059b0c2a6c2db70c87a7715f8a344a13400fa1 net: rename DEFAULT_BANSCORE_THRESHOLD to DISCOURAGEMENT_THRESHOLD (Jon Atack)
1d4024bca8086cceff7539dd8c15e0b7fe1cc5ea net: remove -banscore configuration option (Jon Atack)

Pull request description:

  per https://github.com/bitcoin/bitcoin/pull/19219#issuecomment-652684340, https://github.com/bitcoin/bitcoin/pull/19219#discussion_r443074487 and https://github.com/bitcoin/bitcoin/pull/19219#issuecomment-652699592. Edit: now split into 3 straightforward PRs:
  - net: remove -banscore configuration option (this PR)
  - rpc: deprecate banscore field in getpeerinfo (#19469, *merged*)
  - gui: no longer display banscores (TBA in the gui repo)

ACKs for top commit:
  MarcoFalke:
    review ACK 06059b0c2a6c2db70c87a7715f8a344a13400fa1 📙
  vasild:
    ACK 06059b0c

Tree-SHA512: 03fad249986e0896697033fbb8ba2cbfaae7d7603b1fb2a38b3d41db697630d238623f4d732b9098c82af249ce5a1767dd432b7ca0fec10544e23d24fbd57c50

1 files changed, 5 insertions, 7 deletions

diff --git a/src/test/denialofservice_tests.cpp b/src/test/denialofservice_tests.cpp
index 1fe01fae04..3d84fa855f 100644
--- a/src/test/denialofservice_tests.cpp
+++ b/src/test/denialofservice_tests.cpp
@@ -232,14 +232,14 @@ BOOST_AUTO_TEST_CASE(DoS_banning)
     dummyNode1.fSuccessfullyConnected = true;
     {
         LOCK(cs_main);
-        Misbehaving(dummyNode1.GetId(), 100); // Should get banned
+        Misbehaving(dummyNode1.GetId(), DISCOURAGEMENT_THRESHOLD); // Should be discouraged
     }
     {
         LOCK2(cs_main, dummyNode1.cs_sendProcessing);
         BOOST_CHECK(peerLogic->SendMessages(&dummyNode1));
     }
     BOOST_CHECK(banman->IsDiscouraged(addr1));
-    BOOST_CHECK(!banman->IsDiscouraged(ip(0xa0b0c001|0x0000ff00))); // Different IP, not banned
+    BOOST_CHECK(!banman->IsDiscouraged(ip(0xa0b0c001|0x0000ff00))); // Different IP, not discouraged
 
     CAddress addr2(ip(0xa0b0c002), NODE_NONE);
     CNode dummyNode2(id++, NODE_NETWORK, 0, INVALID_SOCKET, addr2, 1, 1, CAddress(), "", true);
@@ -255,7 +255,7 @@ BOOST_AUTO_TEST_CASE(DoS_banning)
         LOCK2(cs_main, dummyNode2.cs_sendProcessing);
         BOOST_CHECK(peerLogic->SendMessages(&dummyNode2));
     }
-    BOOST_CHECK(!banman->IsDiscouraged(addr2)); // 2 not banned yet...
+    BOOST_CHECK(!banman->IsDiscouraged(addr2)); // 2 not discouraged yet...
     BOOST_CHECK(banman->IsDiscouraged(addr1));  // ... but 1 still should be
     {
         LOCK(cs_main);
@@ -279,7 +279,6 @@ BOOST_AUTO_TEST_CASE(DoS_banscore)
     auto peerLogic = MakeUnique<PeerLogicValidation>(connman.get(), banman.get(), *m_node.scheduler, *m_node.chainman, *m_node.mempool);
 
     banman->ClearBanned();
-    gArgs.ForceSetArg("-banscore", "111"); // because 11 is my favorite number
     CAddress addr1(ip(0xa0b0c001), NODE_NONE);
     CNode dummyNode1(id++, NODE_NETWORK, 0, INVALID_SOCKET, addr1, 3, 1, CAddress(), "", true);
     dummyNode1.SetSendVersion(PROTOCOL_VERSION);
@@ -288,7 +287,7 @@ BOOST_AUTO_TEST_CASE(DoS_banscore)
     dummyNode1.fSuccessfullyConnected = true;
     {
         LOCK(cs_main);
-        Misbehaving(dummyNode1.GetId(), 100);
+        Misbehaving(dummyNode1.GetId(), DISCOURAGEMENT_THRESHOLD - 11);
     }
     {
         LOCK2(cs_main, dummyNode1.cs_sendProcessing);
@@ -313,7 +312,6 @@ BOOST_AUTO_TEST_CASE(DoS_banscore)
         BOOST_CHECK(peerLogic->SendMessages(&dummyNode1));
     }
     BOOST_CHECK(banman->IsDiscouraged(addr1));
-    gArgs.ForceSetArg("-banscore", ToString(DEFAULT_BANSCORE_THRESHOLD));
 
     bool dummy;
     peerLogic->FinalizeNode(dummyNode1.GetId(), dummy);
@@ -338,7 +336,7 @@ BOOST_AUTO_TEST_CASE(DoS_bantime)
 
     {
         LOCK(cs_main);
-        Misbehaving(dummyNode.GetId(), 100);
+        Misbehaving(dummyNode.GetId(), DISCOURAGEMENT_THRESHOLD);
     }
     {
         LOCK2(cs_main, dummyNode.cs_sendProcessing);