For software that interfaces with Bitcoin Core via RPC, it can be useful to know whether the fRelayTxes flag is set. It could be added to `getnetworkinfo`.

{
        uiInterface.InitMessage.connect(SetRPCWarmupStatus);
        if (!AppInitServers(threadGroup))
            return InitError(_("Unable to start HTTP server. See debug log for details."));
    }
    int64_t nStart;
    
#ifdef ENABLE_WALLET
    if (!fDisableWallet) {
        if (!CWallet::Verify())
            return false;
    } 
#endif 
    
    RegisterNodeSignals(GetNodeSignals());
    
    std::vector<string> uacomments;
    BOOST_FOREACH(string cmt, mapMultiArgs["-uacomment"])
    {
        if (cmt != SanitizeString(cmt, SAFE_CHARS_UA_COMMENT))
            return InitError(strprintf(_("User Agent comment (%s) contains unsafe characters."), cmt));
        uacomments.push_back(SanitizeString(cmt, SAFE_CHARS_UA_COMMENT));
    }
    strSubVersion = FormatSubVersion(CLIENT_NAME, CLIENT_VERSION, uacomments);
    if (strSubVersion.size() > MAX_SUBVERSION_LENGTH) {
        return InitError(strprintf(_("Total length of network version string (%i) exceeds maximum length (%i). Reduce the number or size of uacomments."),
            strSubVersion.size(), MAX_SUBVERSION_LENGTH));
    }
    if (mapArgs.count("-onlynet")) {
        std::set<enum Network> nets;