// Copyright (c) 2016-2024 The Hush developers
/******************************************************************************
 * Copyright © 2014-2019 The SuperNET Developers.                             *
 *                                                                            *
 * See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at                  *
 * the top-level directory of this distribution for the individual copyright  *
 * holder information and the developer policies on copyright and licensing.  *
 *                                                                            *
 * Unless otherwise agreed in a custom licensing agreement, no part of the    *
 * SuperNET software, including this file may be copied, modified, propagated *
 * or distributed except according to the terms contained in the LICENSE file *
 *                                                                            *
 * Removal or modification of this copyright notice is prohibited.            *
 *                                                                            *
 ******************************************************************************/

#ifndef HUSH_NSPVSUPERLITE_H
#define HUSH_NSPVSUPERLITE_H

// nSPV client. VERY simplistic "single threaded" networking model. for production GUI best to multithread, etc.
// no caching, no optimizations, no reducing the number of ntzsproofs needed by detecting overlaps, etc.
// advantage is that it is simpler to implement and understand to create a design for a more performant version


CAmount AmountFromValue(const UniValue& value);
int32_t bitcoin_base58decode(uint8_t *data,char *coinaddr);

uint32_t NSPV_lastinfo,NSPV_logintime,NSPV_tiptime;
CKey NSPV_key;
char NSPV_wifstr[64],NSPV_pubkeystr[67],NSPV_lastpeer[128];
std::string NSPV_address;
struct NSPV_inforesp NSPV_inforesult;
struct NSPV_utxosresp NSPV_utxosresult;
struct NSPV_txidsresp NSPV_txidsresult;
struct NSPV_mempoolresp NSPV_mempoolresult;
struct NSPV_spentinfo NSPV_spentresult;
struct NSPV_ntzsresp NSPV_ntzsresult;
struct NSPV_ntzsproofresp NSPV_ntzsproofresult;
struct NSPV_txproof NSPV_txproofresult;
struct NSPV_broadcastresp NSPV_broadcastresult;

struct NSPV_ntzsresp NSPV_ntzsresp_cache[NSPV_MAXVINS];
struct NSPV_ntzsproofresp NSPV_ntzsproofresp_cache[NSPV_MAXVINS * 2];
struct NSPV_txproof NSPV_txproof_cache[NSPV_MAXVINS * 4];

struct NSPV_ntzsresp *NSPV_ntzsresp_find(int32_t reqheight)
{
    int32_t i;
    for (i=0; i<sizeof(NSPV_ntzsresp_cache)/sizeof(*NSPV_ntzsresp_cache); i++)
        if ( NSPV_ntzsresp_cache[i].reqheight == reqheight )
            return(&NSPV_ntzsresp_cache[i]);
    return(0);
}

struct NSPV_ntzsresp *NSPV_ntzsresp_add(struct NSPV_ntzsresp *ptr)
{
    int32_t i;
    for (i=0; i<sizeof(NSPV_ntzsresp_cache)/sizeof(*NSPV_ntzsresp_cache); i++)
        if ( NSPV_ntzsresp_cache[i].reqheight == 0 )
            break;
    if ( i == sizeof(NSPV_ntzsresp_cache)/sizeof(*NSPV_ntzsresp_cache) )
        i = (rand() % (sizeof(NSPV_ntzsresp_cache)/sizeof(*NSPV_ntzsresp_cache)));
    NSPV_ntzsresp_purge(&NSPV_ntzsresp_cache[i]);
    NSPV_ntzsresp_copy(&NSPV_ntzsresp_cache[i],ptr);
    fprintf(stderr,"ADD CACHE ntzsresp req.%d\n",ptr->reqheight);
    return(&NSPV_ntzsresp_cache[i]);
}

struct NSPV_txproof *NSPV_txproof_find(uint256 txid)
{
    int32_t i; struct NSPV_txproof *backup = 0;
    for (i=0; i<sizeof(NSPV_txproof_cache)/sizeof(*NSPV_txproof_cache); i++)
        if ( NSPV_txproof_cache[i].txid == txid )
        {
            if ( NSPV_txproof_cache[i].txprooflen != 0 )
                return(&NSPV_txproof_cache[i]);
            else backup = &NSPV_txproof_cache[i];
        }
    return(backup);
}

struct NSPV_txproof *NSPV_txproof_add(struct NSPV_txproof *ptr)
{
    int32_t i;
    for (i=0; i<sizeof(NSPV_txproof_cache)/sizeof(*NSPV_txproof_cache); i++)
        if ( NSPV_txproof_cache[i].txid == ptr->txid )
        {
            if ( NSPV_txproof_cache[i].txprooflen == 0 && ptr->txprooflen != 0 )
            {
                NSPV_txproof_purge(&NSPV_txproof_cache[i]);
                NSPV_txproof_copy(&NSPV_txproof_cache[i],ptr);
                return(&NSPV_txproof_cache[i]);
            }
            else if ( NSPV_txproof_cache[i].txprooflen != 0 || ptr->txprooflen == 0 )
                return(&NSPV_txproof_cache[i]);
        }
    for (i=0; i<sizeof(NSPV_txproof_cache)/sizeof(*NSPV_txproof_cache); i++)
        if ( NSPV_txproof_cache[i].txlen == 0 )
            break;
    if ( i == sizeof(NSPV_txproof_cache)/sizeof(*NSPV_txproof_cache) )
        i = (rand() % (sizeof(NSPV_txproof_cache)/sizeof(*NSPV_txproof_cache)));
    NSPV_txproof_purge(&NSPV_txproof_cache[i]);
    NSPV_txproof_copy(&NSPV_txproof_cache[i],ptr);
    fprintf(stderr,"ADD CACHE txproof %s\n",ptr->txid.GetHex().c_str());
    return(&NSPV_txproof_cache[i]);
}

struct NSPV_ntzsproofresp *NSPV_ntzsproof_find(uint256 prevtxid,uint256 nexttxid)
{
    int32_t i;
    for (i=0; i<sizeof(NSPV_ntzsproofresp_cache)/sizeof(*NSPV_ntzsproofresp_cache); i++)
        if ( NSPV_ntzsproofresp_cache[i].prevtxid == prevtxid && NSPV_ntzsproofresp_cache[i].nexttxid == nexttxid )
            return(&NSPV_ntzsproofresp_cache[i]);
    return(0);
}

struct NSPV_ntzsproofresp *NSPV_ntzsproof_add(struct NSPV_ntzsproofresp *ptr)
{
    int32_t i;
    for (i=0; i<sizeof(NSPV_ntzsproofresp_cache)/sizeof(*NSPV_ntzsproofresp_cache); i++)
        if ( NSPV_ntzsproofresp_cache[i].common.hdrs == 0 )
            break;
    if ( i == sizeof(NSPV_ntzsproofresp_cache)/sizeof(*NSPV_ntzsproofresp_cache) )
        i = (rand() % (sizeof(NSPV_ntzsproofresp_cache)/sizeof(*NSPV_ntzsproofresp_cache)));
    NSPV_ntzsproofresp_purge(&NSPV_ntzsproofresp_cache[i]);
    NSPV_ntzsproofresp_copy(&NSPV_ntzsproofresp_cache[i],ptr);
    fprintf(stderr,"ADD CACHE ntzsproof %s %s\n",ptr->prevtxid.GetHex().c_str(),ptr->nexttxid.GetHex().c_str());
    return(&NSPV_ntzsproofresp_cache[i]);
}

// hush_nSPVresp is called from async message processing

void hush_nSPVresp(CNode *pfrom,std::vector<uint8_t> response) // received a response
{
    struct NSPV_inforesp I; int32_t len; uint32_t timestamp = (uint32_t)time(NULL);
    strncpy(NSPV_lastpeer,pfrom->addr.ToString().c_str(),sizeof(NSPV_lastpeer)-1);
    if ( (len= response.size()) > 0 )
    {
        switch ( response[0] )
        {
            case NSPV_INFORESP:
                fprintf(stderr,"got version.%d info response %u size.%d height.%d\n",NSPV_inforesult.version,timestamp,(int32_t)response.size(),NSPV_inforesult.height); // update current height and ntrz status
                I = NSPV_inforesult;
                NSPV_inforesp_purge(&NSPV_inforesult);
                NSPV_rwinforesp(0,&response[1],&NSPV_inforesult);
                if ( NSPV_inforesult.height < I.height )
                {
                    fprintf(stderr,"got old info response %u size.%d height.%d\n",timestamp,(int32_t)response.size(),NSPV_inforesult.height); // update current height and ntrz status
                    NSPV_inforesp_purge(&NSPV_inforesult);
                    NSPV_inforesult = I;
                }
                else if ( NSPV_inforesult.height > I.height )
                {
                    NSPV_lastinfo = timestamp - ASSETCHAINS_BLOCKTIME/4;
                    // need to validate new header to make sure it is valid mainchain
                    if ( NSPV_inforesult.height == NSPV_inforesult.hdrheight )
                        NSPV_tiptime = NSPV_inforesult.H.nTime;
                }
                break;
            case NSPV_UTXOSRESP:
                NSPV_utxosresp_purge(&NSPV_utxosresult);
                NSPV_rwutxosresp(0,&response[1],&NSPV_utxosresult);
                fprintf(stderr,"got utxos response %u size.%d\n",timestamp,(int32_t)response.size());
                break;
            case NSPV_TXIDSRESP:
                NSPV_txidsresp_purge(&NSPV_txidsresult);
                NSPV_rwtxidsresp(0,&response[1],&NSPV_txidsresult);
                fprintf(stderr,"got txids response %u size.%d %s CC.%d num.%d\n",timestamp,(int32_t)response.size(),NSPV_txidsresult.coinaddr,NSPV_txidsresult.CCflag,NSPV_txidsresult.numtxids);
                break;
            case NSPV_MEMPOOLRESP:
                NSPV_mempoolresp_purge(&NSPV_mempoolresult);
                NSPV_rwmempoolresp(0,&response[1],&NSPV_mempoolresult);
                fprintf(stderr,"got mempool response %u size.%d %s CC.%d num.%d funcid.%d %s/v%d\n",timestamp,(int32_t)response.size(),NSPV_mempoolresult.coinaddr,NSPV_mempoolresult.CCflag,NSPV_mempoolresult.numtxids,NSPV_mempoolresult.funcid,NSPV_mempoolresult.txid.GetHex().c_str(),NSPV_mempoolresult.vout);
                break;
           case NSPV_NTZSRESP:
                NSPV_ntzsresp_purge(&NSPV_ntzsresult);
                NSPV_rwntzsresp(0,&response[1],&NSPV_ntzsresult);
                if ( NSPV_ntzsresp_find(NSPV_ntzsresult.reqheight) == 0 )
                    NSPV_ntzsresp_add(&NSPV_ntzsresult);
                fprintf(stderr,"got ntzs response %u size.%d %s prev.%d, %s next.%d\n",timestamp,(int32_t)response.size(),NSPV_ntzsresult.prevntz.txid.GetHex().c_str(),NSPV_ntzsresult.prevntz.height,NSPV_ntzsresult.nextntz.txid.GetHex().c_str(),NSPV_ntzsresult.nextntz.height);
                break;
            case NSPV_NTZSPROOFRESP:
                NSPV_ntzsproofresp_purge(&NSPV_ntzsproofresult);
                NSPV_rwntzsproofresp(0,&response[1],&NSPV_ntzsproofresult);
                if ( NSPV_ntzsproof_find(NSPV_ntzsproofresult.prevtxid,NSPV_ntzsproofresult.nexttxid) == 0 )
                    NSPV_ntzsproof_add(&NSPV_ntzsproofresult);
                fprintf(stderr,"got ntzproof response %u size.%d prev.%d next.%d\n",timestamp,(int32_t)response.size(),NSPV_ntzsproofresult.common.prevht,NSPV_ntzsproofresult.common.nextht);
                break;
            case NSPV_TXPROOFRESP:
                NSPV_txproof_purge(&NSPV_txproofresult);
                NSPV_rwtxproof(0,&response[1],&NSPV_txproofresult);
                if ( NSPV_txproof_find(NSPV_txproofresult.txid) == 0 )
                    NSPV_txproof_add(&NSPV_txproofresult);
                fprintf(stderr,"got txproof response %u size.%d %s ht.%d\n",timestamp,(int32_t)response.size(),NSPV_txproofresult.txid.GetHex().c_str(),NSPV_txproofresult.height);
                break;
            case NSPV_SPENTINFORESP:
                NSPV_spentinfo_purge(&NSPV_spentresult);
                NSPV_rwspentinfo(0,&response[1],&NSPV_spentresult);
                fprintf(stderr,"got spentinfo response %u size.%d\n",timestamp,(int32_t)response.size());
                break;
            case NSPV_BROADCASTRESP:
                NSPV_broadcast_purge(&NSPV_broadcastresult);
                NSPV_rwbroadcastresp(0,&response[1],&NSPV_broadcastresult);
                fprintf(stderr,"got broadcast response %u size.%d %s retcode.%d\n",timestamp,(int32_t)response.size(),NSPV_broadcastresult.txid.GetHex().c_str(),NSPV_broadcastresult.retcode);
                break;
            case NSPV_CCMODULEUTXOSRESP:
                NSPV_utxosresp_purge(&NSPV_utxosresult);
                NSPV_rwutxosresp(0, &response[1], &NSPV_utxosresult);
                fprintf(stderr, "got cc module utxos response %u size.%d\n", timestamp, (int32_t)response.size());
                break;

            default: fprintf(stderr,"unexpected response %02x size.%d at %u\n",response[0],(int32_t)response.size(),timestamp);
                break;
        }
    }
}

// superlite message issuing

CNode *NSPV_req(CNode *pnode,uint8_t *msg,int32_t len,uint64_t mask,int32_t ind)
{
    int32_t n,flag = 0; CNode *pnodes[64]; uint32_t timestamp = (uint32_t)time(NULL);
    if ( HUSH_NSPV_FULLNODE )
        return(0);
    if ( pnode == 0 )
    {
        memset(pnodes,0,sizeof(pnodes));
        //LOCK(cs_vNodes);
        n = 0;
        BOOST_FOREACH(CNode *ptr,vNodes)
        {
            if ( ptr->prevtimes[ind] > timestamp )
                ptr->prevtimes[ind] = 0;
            if ( ptr->hSocket == INVALID_SOCKET )
                continue;
            if ( (ptr->nServices & mask) == mask && timestamp > ptr->prevtimes[ind] )
            {
                flag = 1;
                pnodes[n++] = ptr;
                if ( n == sizeof(pnodes)/sizeof(*pnodes) )
                    break;
            } // else fprintf(stderr,"nServices %llx vs mask %llx, t%u vs %u, ind.%d\n",(long long)ptr->nServices,(long long)mask,timestamp,ptr->prevtimes[ind],ind);
        }
        if ( n > 0 )
            pnode = pnodes[rand() % n];
    } else flag = 1;
    if ( pnode != 0 )
    {
        std::vector<uint8_t> request;
        request.resize(len);
        memcpy(&request[0],msg,len);
        if ( (0) && HUSH_NSPV_SUPERLITE )
            fprintf(stderr,"pushmessage [%d] len.%d\n",msg[0],len);
        pnode->PushMessage("getnSPV",request);
        pnode->prevtimes[ind] = timestamp;
        return(pnode);
    } else fprintf(stderr,"no pnodes\n");
    return(0);
}

UniValue NSPV_logout()
{
    UniValue result(UniValue::VOBJ);
    result.push_back(Pair("result","success"));
    if ( NSPV_logintime != 0 )
        fprintf(stderr,"scrub wif and privkey from NSPV memory\n");
    else result.push_back(Pair("status","wasnt logged in"));
    memset(NSPV_ntzsproofresp_cache,0,sizeof(NSPV_ntzsproofresp_cache));
    memset(NSPV_txproof_cache,0,sizeof(NSPV_txproof_cache));
    memset(NSPV_ntzsresp_cache,0,sizeof(NSPV_ntzsresp_cache));
    memset(NSPV_wifstr,0,sizeof(NSPV_wifstr));
    memset(&NSPV_key,0,sizeof(NSPV_key));
    NSPV_logintime = 0;
    return(result);
}

// hush_nSPV from main polling loop (really this belongs in its own file, but it is so small, it ended up here)

void hush_nSPV(CNode *pto) // polling loop from SendMessages
{
    uint8_t msg[256]; int32_t i,len=0; uint32_t timestamp = (uint32_t)time(NULL);
    if ( NSPV_logintime != 0 && timestamp > NSPV_logintime+NSPV_AUTOLOGOUT )
        NSPV_logout();
    if ( (pto->nServices & NODE_NSPV) == 0 )
        return;
    if ( pto->prevtimes[NSPV_INFO>>1] > timestamp )
        pto->prevtimes[NSPV_INFO>>1] = 0;
    if ( HUSH_NSPV_SUPERLITE )
    {
        if ( timestamp > NSPV_lastinfo + ASSETCHAINS_BLOCKTIME/2 && timestamp > pto->prevtimes[NSPV_INFO>>1] + 2*ASSETCHAINS_BLOCKTIME/3 )
        {
            int32_t reqht;
            reqht = 0;
            len = 0;
            msg[len++] = NSPV_INFO;
            len += dragon_rwnum(1,&msg[len],sizeof(reqht),&reqht);
            //fprintf(stderr,"issue getinfo\n");
            NSPV_req(pto,msg,len,NODE_NSPV,NSPV_INFO>>1);
        }
    }
}

UniValue NSPV_txproof_json(struct NSPV_txproof *ptr)
{
    UniValue result(UniValue::VOBJ);
    result.push_back(Pair("txid",ptr->txid.GetHex()));
    result.push_back(Pair("height",(int64_t)ptr->height));
    result.push_back(Pair("txlen",(int64_t)ptr->txlen));
    result.push_back(Pair("txprooflen",(int64_t)ptr->txprooflen));
    result.push_back(Pair("lastpeer",NSPV_lastpeer));
    return(result);
}

UniValue NSPV_spentinfo_json(struct NSPV_spentinfo *ptr)
{
    UniValue result(UniValue::VOBJ);
    result.push_back(Pair("result","success"));
    result.push_back(Pair("txid",ptr->txid.GetHex()));
    result.push_back(Pair("vout",(int64_t)ptr->vout));
    result.push_back(Pair("spentheight",(int64_t)ptr->spent.height));
    result.push_back(Pair("spenttxid",ptr->spent.txid.GetHex()));
    result.push_back(Pair("spentvini",(int64_t)ptr->spentvini));
    result.push_back(Pair("spenttxlen",(int64_t)ptr->spent.txlen));
    result.push_back(Pair("spenttxprooflen",(int64_t)ptr->spent.txprooflen));
    result.push_back(Pair("lastpeer",NSPV_lastpeer));
    return(result);
}

UniValue NSPV_ntz_json(struct NSPV_ntz *ptr)
{
    UniValue result(UniValue::VOBJ);
    result.push_back(Pair("notarized_height",(int64_t)ptr->height));
    result.push_back(Pair("notarized_blockhash",ptr->blockhash.GetHex()));
    result.push_back(Pair("notarization_txid",ptr->txid.GetHex()));
    result.push_back(Pair("notarization_txidheight",(int64_t)ptr->txidheight));
    result.push_back(Pair("notarization_desttxid",ptr->othertxid.GetHex()));
    return(result);
}

UniValue NSPV_header_json(struct NSPV_equihdr *hdr,int32_t height)
{
    UniValue item(UniValue::VOBJ);
    item.push_back(Pair("height",(int64_t)height));
    item.push_back(Pair("blockhash",NSPV_hdrhash(hdr).GetHex()));
    item.push_back(Pair("hashPrevBlock",hdr->hashPrevBlock.GetHex()));
    item.push_back(Pair("hashMerkleRoot",hdr->hashMerkleRoot.GetHex()));
    item.push_back(Pair("nTime",(int64_t)hdr->nTime));
    item.push_back(Pair("nBits",(int64_t)hdr->nBits));
    return(item);
}

UniValue NSPV_headers_json(struct NSPV_equihdr *hdrs,int32_t numhdrs,int32_t height)
{
    UniValue array(UniValue::VARR); int32_t i;
    for (i=0; i<numhdrs; i++)
        array.push_back(NSPV_header_json(&hdrs[i],height+i));
    return(array);
}

UniValue NSPV_getinfo_json(struct NSPV_inforesp *ptr)
{
    UniValue result(UniValue::VOBJ); int32_t expiration; uint32_t timestamp = (uint32_t)time(NULL);
    result.push_back(Pair("result","success"));
    result.push_back(Pair("nSPV",HUSH_NSPV==-1?"disabled":(HUSH_NSPV_SUPERLITE?"superlite":"fullnode")));
    if ( NSPV_address.size() != 0 )
    {
        result.push_back(Pair("address",NSPV_address));
        result.push_back(Pair("pubkey",NSPV_pubkeystr));
    }
    if ( NSPV_logintime != 0 )
    {
        expiration = (NSPV_logintime + NSPV_AUTOLOGOUT - timestamp);
        result.push_back(Pair("wifexpires",expiration));
    }
    result.push_back(Pair("height",(int64_t)ptr->height));
    result.push_back(Pair("chaintip",ptr->blockhash.GetHex()));
    result.push_back(Pair("notarization",NSPV_ntz_json(&ptr->notarization)));
    result.push_back(Pair("header",NSPV_header_json(&ptr->H,ptr->hdrheight)));
    result.push_back(Pair("protocolversion",(int64_t)ptr->version));
    result.push_back(Pair("lastpeer",NSPV_lastpeer));
    return(result);
}

UniValue NSPV_utxoresp_json(struct NSPV_utxoresp *utxos,int32_t numutxos)
{
    UniValue array(UniValue::VARR); int32_t i;
    for (i=0; i<numutxos; i++)
    {
        UniValue item(UniValue::VOBJ);
        item.push_back(Pair("height",(int64_t)utxos[i].height));
        item.push_back(Pair("txid",utxos[i].txid.GetHex()));
        item.push_back(Pair("vout",(int64_t)utxos[i].vout));
        item.push_back(Pair("value",(double)utxos[i].satoshis/COIN));
        array.push_back(item);
    }
    return(array);
}

UniValue NSPV_utxosresp_json(struct NSPV_utxosresp *ptr)
{
    UniValue result(UniValue::VOBJ);
    result.push_back(Pair("result","success"));
    result.push_back(Pair("utxos",NSPV_utxoresp_json(ptr->utxos,ptr->numutxos)));
    result.push_back(Pair("address",ptr->coinaddr));
    result.push_back(Pair("isCC",ptr->CCflag));
    result.push_back(Pair("height",(int64_t)ptr->nodeheight));
    result.push_back(Pair("numutxos",(int64_t)ptr->numutxos));
    result.push_back(Pair("balance",(double)ptr->total/COIN));
    result.push_back(Pair("filter",(int64_t)ptr->filter));
    result.push_back(Pair("lastpeer",NSPV_lastpeer));
    return(result);
}

UniValue NSPV_txidresp_json(struct NSPV_txidresp *utxos,int32_t numutxos)
{
    UniValue array(UniValue::VARR); int32_t i;
    for (i=0; i<numutxos; i++)
    {
        UniValue item(UniValue::VOBJ);
        item.push_back(Pair("height",(int64_t)utxos[i].height));
        item.push_back(Pair("txid",utxos[i].txid.GetHex()));
        item.push_back(Pair("value",(double)utxos[i].satoshis/COIN));
        if ( utxos[i].satoshis > 0 )
            item.push_back(Pair("vout",(int64_t)utxos[i].vout));
        else item.push_back(Pair("vin",(int64_t)utxos[i].vout));
        array.push_back(item);
    }
    return(array);
}

UniValue NSPV_txidsresp_json(struct NSPV_txidsresp *ptr)
{
    UniValue result(UniValue::VOBJ);
    result.push_back(Pair("result","success"));
    result.push_back(Pair("txids",NSPV_txidresp_json(ptr->txids,ptr->numtxids)));
    result.push_back(Pair("address",ptr->coinaddr));
    result.push_back(Pair("isCC",ptr->CCflag));
    result.push_back(Pair("height",(int64_t)ptr->nodeheight));
    result.push_back(Pair("numtxids",(int64_t)ptr->numtxids));
    result.push_back(Pair("filter",(int64_t)ptr->filter));
    result.push_back(Pair("lastpeer",NSPV_lastpeer));
    return(result);
}

UniValue NSPV_mempoolresp_json(struct NSPV_mempoolresp *ptr)
{
    UniValue result(UniValue::VOBJ),array(UniValue::VARR); int32_t i;
    result.push_back(Pair("result","success"));
    for (i=0; i<ptr->numtxids; i++)
        array.push_back(ptr->txids[i].GetHex().c_str());
    result.push_back(Pair("txids",array));
    result.push_back(Pair("address",ptr->coinaddr));
    result.push_back(Pair("isCC",ptr->CCflag));
    result.push_back(Pair("height",(int64_t)ptr->nodeheight));
    result.push_back(Pair("numtxids",(int64_t)ptr->numtxids));
    result.push_back(Pair("txid",ptr->txid.GetHex().c_str()));
    result.push_back(Pair("vout",(int64_t)ptr->vout));
    result.push_back(Pair("funcid",(int64_t)ptr->funcid));
    result.push_back(Pair("lastpeer",NSPV_lastpeer));
    return(result);
}

UniValue NSPV_ntzsresp_json(struct NSPV_ntzsresp *ptr)
{
    UniValue result(UniValue::VOBJ);
    result.push_back(Pair("result","success"));
    result.push_back(Pair("prev",NSPV_ntz_json(&ptr->prevntz)));
    result.push_back(Pair("next",NSPV_ntz_json(&ptr->nextntz)));
    result.push_back(Pair("lastpeer",NSPV_lastpeer));
    return(result);
}

UniValue NSPV_ntzsproof_json(struct NSPV_ntzsproofresp *ptr)
{
    UniValue result(UniValue::VOBJ);
    result.push_back(Pair("result","success"));
    result.push_back(Pair("prevht",(int64_t)ptr->common.prevht));
    result.push_back(Pair("nextht",(int64_t)ptr->common.nextht));
    result.push_back(Pair("prevtxid",ptr->prevtxid.GetHex()));
    result.push_back(Pair("prevtxidht",(int64_t)ptr->prevtxidht));
    result.push_back(Pair("prevtxlen",(int64_t)ptr->prevtxlen));
    result.push_back(Pair("nexttxid",ptr->nexttxid.GetHex()));
    result.push_back(Pair("nexttxidht",(int64_t)ptr->nexttxidht));
    result.push_back(Pair("nexttxlen",(int64_t)ptr->nexttxlen));
    result.push_back(Pair("numhdrs",(int64_t)ptr->common.numhdrs));
    result.push_back(Pair("headers",NSPV_headers_json(ptr->common.hdrs,ptr->common.numhdrs,ptr->common.prevht)));
    result.push_back(Pair("lastpeer",NSPV_lastpeer));
    //fprintf(stderr,"ntzs_proof %s %d, %s %d\n",ptr->prevtxid.GetHex().c_str(),ptr->common.prevht,ptr->nexttxid.GetHex().c_str(),ptr->common.nextht);
    return(result);
}

UniValue NSPV_broadcast_json(struct NSPV_broadcastresp *ptr,uint256 txid)
{
    UniValue result(UniValue::VOBJ);
    result.push_back(Pair("result","success"));
    result.push_back(Pair("expected",txid.GetHex()));
    result.push_back(Pair("broadcast",ptr->txid.GetHex()));
    result.push_back(Pair("retcode",(int64_t)ptr->retcode));
    switch ( ptr->retcode )
    {
        case 1: result.push_back(Pair("type","broadcast and mempool")); break;
        case 0: result.push_back(Pair("type","broadcast")); break;
        case -1: result.push_back(Pair("type","decode error")); break;
        case -2: result.push_back(Pair("type","timeout")); break;
        case -3: result.push_back(Pair("type","error adding to mempool")); break;
        default: result.push_back(Pair("type","unknown")); break;
    }
    result.push_back(Pair("lastpeer",NSPV_lastpeer));
    return(result);
}

UniValue NSPV_login(char *wifstr)
{
    UniValue result(UniValue::VOBJ); char coinaddr[64]; uint8_t data[128]; int32_t len,valid = 0;
    NSPV_logout();
    len = bitcoin_base58decode(data,wifstr);
    if ( strlen(wifstr) < 64 && (len == 38 && data[len-5] == 1) || (len == 37 && data[len-5] != 1) )
        valid = 1;
    if ( valid == 0 || data[0] != 188 )
    {
        result.push_back(Pair("result","error"));
        result.push_back(Pair("error","invalid wif"));
        result.push_back(Pair("len",(int64_t)len));
        result.push_back(Pair("prefix",(int64_t)data[0]));
        return(result);
    }
    memset(NSPV_wifstr,0,sizeof(NSPV_wifstr));
    NSPV_logintime = (uint32_t)time(NULL);
    if ( strcmp(NSPV_wifstr,wifstr) != 0 )
    {
        strncpy(NSPV_wifstr,wifstr,sizeof(NSPV_wifstr)-1);
        NSPV_key = DecodeSecret(wifstr);
    }
    result.push_back(Pair("result","success"));
    result.push_back(Pair("status","wif will expire in 777 seconds"));
    CPubKey pubkey = NSPV_key.GetPubKey();
    CKeyID vchAddress = pubkey.GetID();
    NSPV_address = EncodeDestination(vchAddress);
    result.push_back(Pair("address",NSPV_address));
    result.push_back(Pair("pubkey",HexStr(pubkey)));
    strcpy(NSPV_pubkeystr,HexStr(pubkey).c_str());
    if ( HUSH_NSPV_SUPERLITE )
        decode_hex(NOTARY_PUBKEY33,33,NSPV_pubkeystr);
    result.push_back(Pair("wifprefix",(int64_t)data[0]));
    result.push_back(Pair("compressed",(int64_t)(data[len-5] == 1)));
    memset(data,0,sizeof(data));
    return(result);
}

UniValue NSPV_getinfo_req(int32_t reqht)
{
    uint8_t msg[512]; int32_t i,iter,len = 0; struct NSPV_inforesp I;
    NSPV_inforesp_purge(&NSPV_inforesult);
    msg[len++] = NSPV_INFO;
    len += dragon_rwnum(1,&msg[len],sizeof(reqht),&reqht);
    for (iter=0; iter<3; iter++)
    if ( NSPV_req(0,msg,len,NODE_NSPV,msg[0]>>1) != 0 )
    {
        for (i=0; i<NSPV_POLLITERS; i++)
        {
            usleep(NSPV_POLLMICROS);
            if ( NSPV_inforesult.height != 0 )
                return(NSPV_getinfo_json(&NSPV_inforesult));
        }
    } else sleep(1);
    memset(&I,0,sizeof(I));
    return(NSPV_getinfo_json(&NSPV_inforesult));
}

uint32_t NSPV_blocktime(int32_t hdrheight)
{
    uint32_t timestamp; struct NSPV_inforesp old = NSPV_inforesult;
    if ( hdrheight > 0 )
    {
        NSPV_getinfo_req(hdrheight);
        if ( NSPV_inforesult.hdrheight == hdrheight )
        {
            timestamp = NSPV_inforesult.H.nTime;
            NSPV_inforesult = old;
            fprintf(stderr,"NSPV_blocktime ht.%d -> t%u\n",hdrheight,timestamp);
            return(timestamp);
        }
    }
    NSPV_inforesult = old;
    return(0);
}

UniValue NSPV_addressutxos(char *coinaddr,int32_t CCflag,int32_t skipcount,int32_t filter)
{
    UniValue result(UniValue::VOBJ); uint8_t msg[512]; int32_t i,iter,slen,len = 0;
    //fprintf(stderr,"utxos %s NSPV addr %s\n",coinaddr,NSPV_address.c_str());
    //if ( NSPV_utxosresult.nodeheight >= NSPV_inforesult.height && strcmp(coinaddr,NSPV_utxosresult.coinaddr) == 0 && CCflag == NSPV_utxosresult.CCflag  && skipcount == NSPV_utxosresult.skipcount && filter == NSPV_utxosresult.filter )
    //    return(NSPV_utxosresp_json(&NSPV_utxosresult));
    if ( skipcount < 0 )
        skipcount = 0;
    NSPV_utxosresp_purge(&NSPV_utxosresult);
    if ( bitcoin_base58decode(msg,coinaddr) != 25 )
    {
        result.push_back(Pair("result","error"));
        result.push_back(Pair("error","invalid address"));
        return(result);
    }
    slen = (int32_t)strlen(coinaddr);
    msg[len++] = NSPV_UTXOS;
    msg[len++] = slen;
    memcpy(&msg[len],coinaddr,slen), len += slen;
    msg[len++] = (CCflag != 0);
    len += dragon_rwnum(1,&msg[len],sizeof(skipcount),&skipcount);
    len += dragon_rwnum(1,&msg[len],sizeof(filter),&filter);
    for (iter=0; iter<3; iter++)
    if ( NSPV_req(0,msg,len,NODE_ADDRINDEX,msg[0]>>1) != 0 )
    {
        for (i=0; i<NSPV_POLLITERS; i++)
        {
            usleep(NSPV_POLLMICROS);
            if ( (NSPV_inforesult.height == 0 || NSPV_utxosresult.nodeheight >= NSPV_inforesult.height) && strcmp(coinaddr,NSPV_utxosresult.coinaddr) == 0 && CCflag == NSPV_utxosresult.CCflag )
                return(NSPV_utxosresp_json(&NSPV_utxosresult));
        }
    } else sleep(1);
    result.push_back(Pair("result","error"));
    result.push_back(Pair("error","no utxos result"));
    result.push_back(Pair("lastpeer",NSPV_lastpeer));
    return(result);
}

UniValue NSPV_addresstxids(char *coinaddr,int32_t CCflag,int32_t skipcount,int32_t filter)
{
    UniValue result(UniValue::VOBJ); uint8_t msg[512]; int32_t i,iter,slen,len = 0;
    if ( NSPV_txidsresult.nodeheight >= NSPV_inforesult.height && strcmp(coinaddr,NSPV_txidsresult.coinaddr) == 0 && CCflag == NSPV_txidsresult.CCflag && skipcount == NSPV_txidsresult.skipcount )
        return(NSPV_txidsresp_json(&NSPV_txidsresult));
    if ( skipcount < 0 )
        skipcount = 0;
    NSPV_txidsresp_purge(&NSPV_txidsresult);
    if ( bitcoin_base58decode(msg,coinaddr) != 25 )
    {
        result.push_back(Pair("result","error"));
        result.push_back(Pair("error","invalid address"));
        return(result);
    }
    slen = (int32_t)strlen(coinaddr);
    msg[len++] = NSPV_TXIDS;
    msg[len++] = slen;
    memcpy(&msg[len],coinaddr,slen), len += slen;
    msg[len++] = (CCflag != 0);
    len += dragon_rwnum(1,&msg[len],sizeof(skipcount),&skipcount);
    len += dragon_rwnum(1,&msg[len],sizeof(filter),&filter);
    //fprintf(stderr,"skipcount.%d\n",skipcount);
    for (iter=0; iter<3; iter++)
    if ( NSPV_req(0,msg,len,NODE_ADDRINDEX,msg[0]>>1) != 0 )
    {
        for (i=0; i<NSPV_POLLITERS; i++)
        {
            usleep(NSPV_POLLMICROS);
            if ( (NSPV_inforesult.height == 0 || NSPV_txidsresult.nodeheight >= NSPV_inforesult.height) && strcmp(coinaddr,NSPV_txidsresult.coinaddr) == 0 && CCflag == NSPV_txidsresult.CCflag )
                return(NSPV_txidsresp_json(&NSPV_txidsresult));
        }
    } else sleep(1);
    result.push_back(Pair("result","error"));
    result.push_back(Pair("error","no txid result"));
    result.push_back(Pair("lastpeer",NSPV_lastpeer));
    return(result);
}

UniValue NSPV_ccaddresstxids(char *coinaddr,int32_t CCflag,int32_t skipcount,uint256 filtertxid,uint8_t evalcode, uint8_t func)
{
    UniValue result(UniValue::VOBJ); uint8_t msg[512],funcid=NSPV_CC_TXIDS; char zeroes[64]; int32_t i,iter,slen,len = 0,vout;
    NSPV_mempoolresp_purge(&NSPV_mempoolresult);
    memset(zeroes,0,sizeof(zeroes));
    if ( coinaddr == 0 )
        coinaddr = zeroes;
    if ( coinaddr[0] != 0 && bitcoin_base58decode(msg,coinaddr) != 25 )
    {
        result.push_back(Pair("result","error"));
        result.push_back(Pair("error","invalid address"));
        return(result);
    }
    vout=skipcount << 16 | evalcode << 8 | func;
    msg[len++] = NSPV_MEMPOOL;
    msg[len++] = (CCflag != 0);
    len += dragon_rwnum(1,&msg[len],sizeof(funcid),&funcid);
    len += dragon_rwnum(1,&msg[len],sizeof(vout),&vout);
    len += dragon_rwbignum(1,&msg[len],sizeof(filtertxid),(uint8_t *)&filtertxid);
    slen = (int32_t)strlen(coinaddr);
    msg[len++] = slen;
    memcpy(&msg[len],coinaddr,slen), len += slen;
    fprintf(stderr,"(%s) func.%d CC.%d %s skipcount.%d len.%d\n",coinaddr,NSPV_CC_TXIDS,CCflag,filtertxid.GetHex().c_str(),skipcount,len);
    for (iter=0; iter<3; iter++)
    if ( NSPV_req(0,msg,len,NODE_NSPV,msg[0]>>1) != 0 )
    {
        for (i=0; i<NSPV_POLLITERS; i++)
        {
            usleep(NSPV_POLLMICROS);
            if ( NSPV_mempoolresult.nodeheight >= NSPV_inforesult.height && strcmp(coinaddr,NSPV_mempoolresult.coinaddr) == 0 && CCflag == NSPV_mempoolresult.CCflag && filtertxid == NSPV_mempoolresult.txid && vout == NSPV_mempoolresult.vout && funcid == NSPV_mempoolresult.funcid )
                return(NSPV_mempoolresp_json(&NSPV_mempoolresult));
        }
    } else sleep(1);
    result.push_back(Pair("result","error"));
    result.push_back(Pair("error","no txid result"));
    result.push_back(Pair("lastpeer",NSPV_lastpeer));
    return(result);
}

UniValue NSPV_mempooltxids(char *coinaddr,int32_t CCflag,uint8_t funcid,uint256 txid,int32_t vout)
{
    UniValue result(UniValue::VOBJ); uint8_t msg[512]; char zeroes[64]; int32_t i,iter,slen,len = 0;
    NSPV_mempoolresp_purge(&NSPV_mempoolresult);
    memset(zeroes,0,sizeof(zeroes));
    if ( coinaddr == 0 )
        coinaddr = zeroes;
    if ( coinaddr[0] != 0 && bitcoin_base58decode(msg,coinaddr) != 25 )
    {
        result.push_back(Pair("result","error"));
        result.push_back(Pair("error","invalid address"));
        return(result);
    }
    msg[len++] = NSPV_MEMPOOL;
    msg[len++] = (CCflag != 0);
    len += dragon_rwnum(1,&msg[len],sizeof(funcid),&funcid);
    len += dragon_rwnum(1,&msg[len],sizeof(vout),&vout);
    len += dragon_rwbignum(1,&msg[len],sizeof(txid),(uint8_t *)&txid);
    slen = (int32_t)strlen(coinaddr);
    msg[len++] = slen;
    memcpy(&msg[len],coinaddr,slen), len += slen;
    fprintf(stderr,"(%s) func.%d CC.%d %s/v%d len.%d\n",coinaddr,funcid,CCflag,txid.GetHex().c_str(),vout,len);
    for (iter=0; iter<3; iter++)
    if ( NSPV_req(0,msg,len,NODE_NSPV,msg[0]>>1) != 0 )
    {
        for (i=0; i<NSPV_POLLITERS; i++)
        {
            usleep(NSPV_POLLMICROS);
            if ( NSPV_mempoolresult.nodeheight >= NSPV_inforesult.height && strcmp(coinaddr,NSPV_mempoolresult.coinaddr) == 0 && CCflag == NSPV_mempoolresult.CCflag && txid == NSPV_mempoolresult.txid && vout == NSPV_mempoolresult.vout && funcid == NSPV_mempoolresult.funcid )
                return(NSPV_mempoolresp_json(&NSPV_mempoolresult));
        }
    } else sleep(1);
    result.push_back(Pair("result","error"));
    result.push_back(Pair("error","no txid result"));
    result.push_back(Pair("lastpeer",NSPV_lastpeer));
    return(result);
}

int32_t NSPV_coinaddr_inmempool(char const *logcategory,char *coinaddr,uint8_t CCflag)
{
    NSPV_mempooltxids(coinaddr,CCflag,NSPV_MEMPOOL_ADDRESS,zeroid,-1);
    if ( NSPV_mempoolresult.txids != 0 && NSPV_mempoolresult.numtxids >= 1 && strcmp(NSPV_mempoolresult.coinaddr,coinaddr) == 0 && NSPV_mempoolresult.CCflag == CCflag )
    {
        LogPrint(logcategory,"found (%s) vout in mempool\n",coinaddr);
        return(true);
    } else return(false);
}

bool NSPV_spentinmempool(uint256 &spenttxid,int32_t &spentvini,uint256 txid,int32_t vout)
{
    NSPV_mempooltxids((char *)"",0,NSPV_MEMPOOL_ISSPENT,txid,vout);
    if ( NSPV_mempoolresult.txids != 0 && NSPV_mempoolresult.numtxids == 1 && NSPV_mempoolresult.txid == txid )
    {
        spenttxid = NSPV_mempoolresult.txids[0];
        spentvini = NSPV_mempoolresult.vindex;
        return(true);
    } else return(false);
}

bool NSPV_inmempool(uint256 txid)
{
    NSPV_mempooltxids((char *)"",0,NSPV_MEMPOOL_INMEMPOOL,txid,0);
    if ( NSPV_mempoolresult.txids != 0 && NSPV_mempoolresult.numtxids == 1 && NSPV_mempoolresult.txids[0] == txid )
        return(true);
    else return(false);
}

bool NSPV_evalcode_inmempool(uint8_t evalcode,uint8_t funcid)
{
    int32_t vout;
    vout = ((uint32_t)funcid << 8) | evalcode;
    NSPV_mempooltxids((char *)"",1,NSPV_MEMPOOL_CCEVALCODE,zeroid,vout);
    if ( NSPV_mempoolresult.txids != 0 && NSPV_mempoolresult.numtxids >= 1 && NSPV_mempoolresult.vout == vout )
        return(true);
    else return(false);
}

UniValue NSPV_notarizations(int32_t reqheight)
{
    uint8_t msg[512]; int32_t i,iter,len = 0; struct NSPV_ntzsresp N,*ptr;
    if ( (ptr= NSPV_ntzsresp_find(reqheight)) != 0 )
    {
        fprintf(stderr,"FROM CACHE NSPV_notarizations.%d\n",reqheight);
        NSPV_ntzsresp_purge(&NSPV_ntzsresult);
        NSPV_ntzsresp_copy(&NSPV_ntzsresult,ptr);
        return(NSPV_ntzsresp_json(ptr));
    }
    msg[len++] = NSPV_NTZS;
    len += dragon_rwnum(1,&msg[len],sizeof(reqheight),&reqheight);
    for (iter=0; iter<3; iter++)
    if ( NSPV_req(0,msg,len,NODE_NSPV,msg[0]>>1) != 0 )
    {
        for (i=0; i<NSPV_POLLITERS; i++)
        {
            usleep(NSPV_POLLMICROS);
            if ( NSPV_ntzsresult.reqheight == reqheight )
                return(NSPV_ntzsresp_json(&NSPV_ntzsresult));
        }
    } else sleep(1);
    memset(&N,0,sizeof(N));
    return(NSPV_ntzsresp_json(&N));
}

UniValue NSPV_txidhdrsproof(uint256 prevtxid,uint256 nexttxid)
{
    uint8_t msg[512]; int32_t i,iter,len = 0; struct NSPV_ntzsproofresp P,*ptr;
    if ( (ptr= NSPV_ntzsproof_find(prevtxid,nexttxid)) != 0 )
    {
        fprintf(stderr,"FROM CACHE NSPV_txidhdrsproof %s %s\n",ptr->prevtxid.GetHex().c_str(),ptr->nexttxid.GetHex().c_str());
        NSPV_ntzsproofresp_purge(&NSPV_ntzsproofresult);
        NSPV_ntzsproofresp_copy(&NSPV_ntzsproofresult,ptr);
        return(NSPV_ntzsproof_json(ptr));
    }
    NSPV_ntzsproofresp_purge(&NSPV_ntzsproofresult);
    msg[len++] = NSPV_NTZSPROOF;
    len += dragon_rwbignum(1,&msg[len],sizeof(prevtxid),(uint8_t *)&prevtxid);
    len += dragon_rwbignum(1,&msg[len],sizeof(nexttxid),(uint8_t *)&nexttxid);
    for (iter=0; iter<3; iter++)
    if ( NSPV_req(0,msg,len,NODE_NSPV,msg[0]>>1) != 0 )
    {
        for (i=0; i<NSPV_POLLITERS; i++)
        {
            usleep(NSPV_POLLMICROS);
            if ( NSPV_ntzsproofresult.prevtxid == prevtxid && NSPV_ntzsproofresult.nexttxid == nexttxid )
                return(NSPV_ntzsproof_json(&NSPV_ntzsproofresult));
        }
    } else sleep(1);
    memset(&P,0,sizeof(P));
    return(NSPV_ntzsproof_json(&P));
}

UniValue NSPV_hdrsproof(int32_t prevht,int32_t nextht)
{
    uint256 prevtxid,nexttxid;
    NSPV_notarizations(prevht);
    prevtxid = NSPV_ntzsresult.prevntz.txid;
    NSPV_notarizations(nextht);
    nexttxid = NSPV_ntzsresult.nextntz.txid;
    return(NSPV_txidhdrsproof(prevtxid,nexttxid));
}

UniValue NSPV_txproof(int32_t vout,uint256 txid,int32_t height)
{
    uint8_t msg[512]; int32_t i,iter,len = 0; struct NSPV_txproof P,*ptr;
    if ( (ptr= NSPV_txproof_find(txid)) != 0 )
    {
        fprintf(stderr,"FROM CACHE NSPV_txproof %s\n",txid.GetHex().c_str());
        NSPV_txproof_purge(&NSPV_txproofresult);
        NSPV_txproof_copy(&NSPV_txproofresult,ptr);
        return(NSPV_txproof_json(ptr));
    }
    NSPV_txproof_purge(&NSPV_txproofresult);
    msg[len++] = NSPV_TXPROOF;
    len += dragon_rwnum(1,&msg[len],sizeof(height),&height);
    len += dragon_rwnum(1,&msg[len],sizeof(vout),&vout);
    len += dragon_rwbignum(1,&msg[len],sizeof(txid),(uint8_t *)&txid);
    fprintf(stderr,"req txproof %s/v%d at height.%d\n",txid.GetHex().c_str(),vout,height);
    for (iter=0; iter<3; iter++)
    if ( NSPV_req(0,msg,len,NODE_NSPV,msg[0]>>1) != 0 )
    {
        for (i=0; i<NSPV_POLLITERS; i++)
        {
            usleep(NSPV_POLLMICROS);
            if ( NSPV_txproofresult.txid == txid )
                return(NSPV_txproof_json(&NSPV_txproofresult));
        }
    } else sleep(1);
    fprintf(stderr,"txproof timeout\n");
    memset(&P,0,sizeof(P));
    return(NSPV_txproof_json(&P));
}

UniValue NSPV_spentinfo(uint256 txid,int32_t vout)
{
    uint8_t msg[512]; int32_t i,iter,len = 0; struct NSPV_spentinfo I;
    NSPV_spentinfo_purge(&NSPV_spentresult);
    msg[len++] = NSPV_SPENTINFO;
    len += dragon_rwnum(1,&msg[len],sizeof(vout),&vout);
    len += dragon_rwbignum(1,&msg[len],sizeof(txid),(uint8_t *)&txid);
    for (iter=0; iter<3; iter++)
    if ( NSPV_req(0,msg,len,NODE_SPENTINDEX,msg[0]>>1) != 0 )
    {
        for (i=0; i<NSPV_POLLITERS; i++)
        {
            usleep(NSPV_POLLMICROS);
            if ( NSPV_spentresult.txid == txid && NSPV_spentresult.vout == vout )
                return(NSPV_spentinfo_json(&NSPV_spentresult));
        }
    } else sleep(1);
    memset(&I,0,sizeof(I));
    return(NSPV_spentinfo_json(&I));
}

UniValue NSPV_broadcast(char *hex)
{
    uint8_t *msg,*data; uint256 txid; int32_t i,n,iter,len = 0; struct NSPV_broadcastresp B;
    NSPV_broadcast_purge(&NSPV_broadcastresult);
    n = (int32_t)strlen(hex) >> 1;
    data = (uint8_t *)malloc(n);
    decode_hex(data,n,hex);
    txid = NSPV_doublesha256(data,n);
    msg = (uint8_t *)malloc(1 + sizeof(txid) + sizeof(n) + n);
    msg[len++] = NSPV_BROADCAST;
    len += dragon_rwbignum(1,&msg[len],sizeof(txid),(uint8_t *)&txid);
    len += dragon_rwnum(1,&msg[len],sizeof(n),&n);
    memcpy(&msg[len],data,n), len += n;
    free(data);
    //fprintf(stderr,"send txid.%s\n",txid.GetHex().c_str());
    for (iter=0; iter<3; iter++)
    if ( NSPV_req(0,msg,len,NODE_NSPV,msg[0]>>1) != 0 )
    {
        for (i=0; i<NSPV_POLLITERS; i++)
        {
            usleep(NSPV_POLLMICROS);
            if ( NSPV_broadcastresult.txid == txid )
            {
                free(msg);
                return(NSPV_broadcast_json(&NSPV_broadcastresult,txid));
            }
        }
    } else sleep(1);
    free(msg);
    memset(&B,0,sizeof(B));
    B.retcode = -2;
    return(NSPV_broadcast_json(&B,txid));
}

// gets cc utxos filtered by evalcode, funcid and txid in opret, for the specified amount
// if amount == 0 returns total and no utxos
// funcids is string of funcid symbols like "ct". The first symbol is considered as creation tx funcid and filtertxid will be compared to the creation tx id itself. 
// For second+ funcids the filtertxid will be compared to txid in opret
UniValue NSPV_ccmoduleutxos(char *coinaddr, int64_t amount, uint8_t evalcode, std::string funcids, uint256 filtertxid)
{
    UniValue result(UniValue::VOBJ); uint8_t msg[512]; int32_t i, iter, slen, len = 0;
    uint8_t CCflag = 1;

    NSPV_utxosresp_purge(&NSPV_utxosresult);
    if (bitcoin_base58decode(msg, coinaddr) != 25)
    {
        result.push_back(Pair("result", "error"));
        result.push_back(Pair("error", "invalid address"));
        return(result);
    }
    msg[len++] = NSPV_CCMODULEUTXOS;

    slen = (int32_t)strlen(coinaddr);
    msg[len++] = slen;
    memcpy(&msg[len], coinaddr, slen), len += slen;

    len += dragon_rwnum(1, &msg[len], sizeof(amount), &amount);
    len += dragon_rwnum(1, &msg[len], sizeof(evalcode), &evalcode);

    slen = (int32_t)(funcids.size());
    msg[len++] = slen;
    memcpy(&msg[len], funcids.data(), slen), len += slen;

    len += dragon_rwbignum(1, &msg[len], sizeof(filtertxid), (uint8_t *)&filtertxid);
    for (iter = 0; iter<3; iter++)
        if (NSPV_req(0, msg, len, NODE_ADDRINDEX, msg[0] >> 1) != 0)
        {
            for (i = 0; i<NSPV_POLLITERS; i++)
            {
                usleep(NSPV_POLLMICROS);
                if ((NSPV_inforesult.height == 0 || NSPV_utxosresult.nodeheight >= NSPV_inforesult.height) && strcmp(coinaddr, NSPV_utxosresult.coinaddr) == 0 && CCflag == NSPV_utxosresult.CCflag)
                    return(NSPV_utxosresp_json(&NSPV_utxosresult));
            }
        }
        else sleep(1);
        result.push_back(Pair("result", "error"));
        result.push_back(Pair("error", "no utxos result"));
        result.push_back(Pair("lastpeer", NSPV_lastpeer));
        return(result);
}

#endif // HUSH_NSPVSUPERLITE_H