Merge #2873: [RPC][MN] Serialize in ADDRV2 for TorV3 in RPC's

6d3d535 Deserialize AddrV1 first if fails deserialize AddrV2 (Liquid369)
afd0c73 Fix MNB Serialization for ADDRv2 in RPCs (Liquid369)

Pull request description:

  With some work being done in PIVX-Labs by @Duddino we noticed that the RPC's for decoding and creating master node broadcasts are in Pre-BIP 155 format or AddrV1 serialization.
  In order for us to create support for Tor master nodes in MPW, we need these RPC's to be able to serialize a TorV3 address.

  There's a few caveats for decoding that there may be other solutions provided by someone else, but for now since receiving the stream, we cannot tell if its PreBIP155 or not, so we unserialize by AddrV1 first and if it fails, we check and attempt AddrV2.

ACKs for top commit:
  Liquid369:
    > tACK [6d3d535](6d3d535) tested on Duddino's node throught MPW, works as intended.
  Duddino:
    tACK 6d3d535 because the above is a really small nitpick
  panleone:
    tACK 6d3d535 tested on Duddino's node throught MPW, works as intended.
  Fuzzbawls:
    ACK 6d3d535

Tree-SHA512: a5f66ef17a8c2d33240bb37e4f6c166ba76cbc5c43de0bc9f92209f44846ab73f41ba146a9d17284ea418af356e7d898f9ee2b1c4c4f3bc3436206712be18389

src/rpc/masternode.cpp

@@ -10,6 +10,7 @@
 #include "masternode-payments.h"
 #include "masternodeconfig.h"
 #include "masternodeman.h"
+#include "netaddress.h"
 #include "netbase.h"
 #include "tiertwo/tiertwo_sync_state.h"
 #include "rpc/server.h"
@@ -390,9 +391,11 @@ void RelayMNB(CMasternodeBroadcast& mnb, const bool fSucces)
 
 void SerializeMNB(UniValue& statusObjRet, const CMasternodeBroadcast& mnb, const bool fSuccess, int& successful, int& failed)
 {
+    bool isBIP155 = mnb.addr.IsAddrV1Compatible();
+    int version = isBIP155 ? PROTOCOL_VERSION | ADDRV2_FORMAT : PROTOCOL_VERSION;
     if(fSuccess) {
         successful++;
-        CDataStream ssMnb(SER_NETWORK, PROTOCOL_VERSION);
+        CDataStream ssMnb(SER_NETWORK, version);
         ssMnb << mnb;
         statusObjRet.pushKV("hex", HexStr(ssMnb));
     } else {
@@ -875,11 +878,7 @@ UniValue getmasternodescores(const JSONRPCRequest& request)
     return obj;
 }
 
-bool DecodeHexMnb(CMasternodeBroadcast& mnb, std::string strHexMnb) {
-
-    if (!IsHex(strHexMnb))
-        return false;
-
+bool DecodeAddrV1(CMasternodeBroadcast& mnb, std::string strHexMnb) {
     std::vector<unsigned char> mnbData(ParseHex(strHexMnb));
     CDataStream ssData(mnbData, SER_NETWORK, PROTOCOL_VERSION);
     try {
@@ -891,6 +890,27 @@ bool DecodeHexMnb(CMasternodeBroadcast& mnb, std::string strHexMnb) {
 
     return true;
 }
+
+bool DecodeHexMnb(CMasternodeBroadcast& mnb, std::string strHexMnb) {
+
+    if (!IsHex(strHexMnb))
+        return false;
+
+    bool MNAddrV1 = DecodeAddrV1(mnb, strHexMnb);
+    if (!MNAddrV1) {
+        std::vector<unsigned char> mnbData(ParseHex(strHexMnb));
+        CDataStream ssData(mnbData, SER_NETWORK, PROTOCOL_VERSION | ADDRV2_FORMAT);
+        try {
+            ssData >> mnb;
+        }
+        catch (const std::exception&) {
+            return false;
+        }
+        return true;
+    }
+    return true;
+}
+
 UniValue createmasternodebroadcast(const JSONRPCRequest& request)
 {
     CWallet * const pwallet = GetWalletForJSONRPCRequest(request);