Add spork command for disconnecting old versions. Increase Protoversion

Author: limxdev

configure.ac

@@ -3,7 +3,7 @@ AC_PREREQ([2.60])
 define(_CLIENT_VERSION_MAJOR, 0)
 define(_CLIENT_VERSION_MINOR, 9)
 define(_CLIENT_VERSION_REVISION, 8)
-define(_CLIENT_VERSION_BUILD, 5)
+define(_CLIENT_VERSION_BUILD, 6)
 define(_CLIENT_VERSION_IS_RELEASE, true)
 define(_COPYRIGHT_YEAR, 2020)
 define(_COPYRIGHT_HOLDERS,[The %s developers])

src/net_processing.cpp

@@ -1932,7 +1932,35 @@ bool static ProcessMessage(CNode* pfrom, const std::string& strCommand, CDataStr
             pfrom->fDisconnect = true;
             return false;
         }
-
+        
+        // BTX BEGIN
+        // It must not be possible that the client separates from its own PROTO_VERSION!
+        if ((nVersion < sporkManager.GetSporkValue(SPORK_BTX_18_MIN_PEER_PROTO_VERSION))&& (sporkManager.GetSporkValue(SPORK_BTX_18_MIN_PEER_PROTO_VERSION) < PROTOCOL_VERSION))
+        {
+            // disconnect from peers older than this proto version
+            LogPrint(BCLog::NET, "SPORK_BTX_18_MIN_PEER_PROTO_VERSION peer=%d using obsolete version %i; disconnecting\n", pfrom->GetId(), nVersion);
+            if (enable_bip61) {
+                connman->PushMessage(pfrom, CNetMsgMaker(INIT_PROTO_VERSION).Make(NetMsgType::REJECT, strCommand, REJECT_OBSOLETE,
+                                   strprintf("SPORK_BTX_18_MIN_PEER_PROTO_VERSION Version must be %d or greater", MIN_PEER_PROTO_VERSION)));
+                // FXTC BEGIN
+                // obsolete peers are very annoying
+                connman->Ban(pfrom->addr, BanReasonNodeMisbehaving);
+                // FXTC END
+            }
+            pfrom->fDisconnect = true;
+            return false;
+        }
+        /*
+        else
+        {
+            LogPrint(BCLog::NET,"SPORK_BTX_18_MIN_PEER_PROTO_VERSION Disable!\n");
+        }
+        LogPrint(BCLog::NET, "SPORK_BTX_18_MIN_PEER_PROTO_VERSION = %d\n", sporkManager.GetSporkValue(SPORK_BTX_18_MIN_PEER_PROTO_VERSION));
+        
+        if (sporkManager.GetSporkValue(SPORK_BTX_18_MIN_PEER_PROTO_VERSION) < PROTOCOL_VERSION)
+        LogPrint(BCLog::NET, "SPORK_BTX_18_MIN_PEER_PROTO_VERSION < PROTOCOL_VERSION n");
+        */
+        // BTX END
         if (nVersion == 10300)
             nVersion = 300;
         if (!vRecv.empty())

src/version.h

@@ -12,7 +12,7 @@
  * network protocol versioning
  */
 
-static const int PROTOCOL_VERSION = 80001;
+static const int PROTOCOL_VERSION = 80002;
 
 //! initial proto version, to be increased after version/verack negotiation
 static const int INIT_PROTO_VERSION = 209;