refactor: readd the check and add separate statuscheck

pkg/collector/collector.go

@@ -80,6 +80,7 @@ func (cc IBCCollector) Collect(ch chan<- prometheus.Metric) {
 		go func(path *relayer.IBCdata) {
 			defer wg.Done()
 
+			// Client info
 			ci, err := ibc.GetClientsInfo(path, cc.RPCs)
 			status := successStatus
 
@@ -103,6 +104,9 @@ func (cc IBCCollector) Collect(ch chan<- prometheus.Metric) {
 				[]string{(*cc.RPCs)[path.Chain2.ChainName].ChainID, path.Chain2.ClientID, (*cc.RPCs)[path.Chain1.ChainName].ChainID, status}...,
 			)
 
+			// Stuck packets
+			status = successStatus
+
 			stuckPackets, err := ibc.GetChannelsInfo(path, cc.RPCs)
 			if err != nil {
 				status = errorStatus

pkg/ibc/ibc.go

@@ -135,6 +135,13 @@ func GetChannelsInfo(ibc *relayer.IBCdata, rpcs *map[string]config.RPC) (Channel
 		return ChannelsInfo{}, fmt.Errorf("Error: %w for %v", err, cdB)
 	}
 
+	// test that RPC endpoints are working
+	if _, _, err := relayer.QueryLatestHeights(
+		ctx, chainA, chainB,
+	); err != nil {
+		return channelInfo, fmt.Errorf("Error: %w for %v", err, cdA)
+	}
+
 	for i, c := range channelInfo.Channels {
 		var order chantypes.Order