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`.

#include "rpc/server.h"
#include "chainparams.h"
#include "clientversion.h"
#include "main.h"
#include "net.h"
#include "netbase.h"
#include "protocol.h"
#include "sync.h"
#include "timedata.h"
#include "ui_interface.h"
#include "util.h"
#include "utilstrencodings.h"
#include "version.h"
#include <boost/foreach.hpp>
#include <univalue.h>
using namespace std;
UniValue getconnectioncount(const UniValue& params, bool fHelp)