Goerli-specific logs (#777)

pkg/node/node.go

@@ -175,6 +175,7 @@ func NewBee(addr string, swarmAddress swarm.Address, publicKey ecdsa.PublicKey,
 
 		chainID, err := swapBackend.ChainID(p2pCtx)
 		if err != nil {
+			logger.Infof("could not connect to backend at %v. In a swap-enabled network a working blockchain node (for goerli network in production) is required. Check your node or specify another node using --swap-endpoint.", o.SwapEndpoint)
 			return nil, fmt.Errorf("could not get chain id from ethereum backend: %w", err)
 		}
 
@@ -208,6 +209,7 @@ func NewBee(addr string, swarmAddress swarm.Address, publicKey ecdsa.PublicKey,
 			o.SwapInitialDeposit,
 			transactionService,
 			swapBackend,
+			chainID.Int64(),
 			overlayEthAddress,
 			chequeSigner,
 			chequebook.NewSimpleSwapBindings,

pkg/settlement/swap/chequebook/init.go

@@ -26,6 +26,7 @@ func Init(
 	swapInitialDeposit uint64,
 	transactionService TransactionService,
 	swapBackend Backend,
+	chainId int64,
 	overlayEthAddress common.Address,
 	chequeSigner ChequeSigner,
 	simpleSwapBindingFunc SimpleSwapBindingFunc,
@@ -63,7 +64,11 @@ func Init(
 			}
 
 			if balance.Cmp(big.NewInt(int64(swapInitialDeposit))) < 0 {
-				return nil, fmt.Errorf("insufficient token for initial deposit. Please make sure there is sufficient eth and bzz available on %x", overlayEthAddress)
+				logger.Warningf("please make sure there is sufficient eth and bzz available on %x.", overlayEthAddress)
+				if chainId == 5 {
+					logger.Warning("on goerli you can get both goerli eth and goerli bzz from https://faucet.ethswarm.org.")
+				}
+				return nil, fmt.Errorf("insufficient token for initial deposit")
 			}
 		}