include rejection reason in client response

storagemarket/impl/clientstates/client_fsm.go

@@ -55,8 +55,8 @@ var ClientEvents = fsm.Events{
 		}),
 	fsm.Event(storagemarket.ClientEventDealRejected).
 		From(storagemarket.StorageDealValidating).To(storagemarket.StorageDealFailing).
-		Action(func(deal *storagemarket.ClientDeal, state storagemarket.StorageDealStatus) error {
-			deal.Message = xerrors.Errorf("deal wasn't accepted (State=%d)", state).Error()
+		Action(func(deal *storagemarket.ClientDeal, state storagemarket.StorageDealStatus, reason string) error {
+			deal.Message = xerrors.Errorf("deal failed: (State=%d) %s", state, reason).Error()
 			return nil
 		}),
 	fsm.Event(storagemarket.ClientEventDealAccepted).

storagemarket/impl/clientstates/client_states.go

@@ -80,7 +80,7 @@ func VerifyDealResponse(ctx fsm.Context, environment ClientDealEnvironment, deal
 	}
 
 	if resp.Response.State != storagemarket.StorageDealProposalAccepted {
-		return ctx.Trigger(storagemarket.ClientEventDealRejected, resp.Response.State)
+		return ctx.Trigger(storagemarket.ClientEventDealRejected, resp.Response.State, resp.Response.Message)
 	}
 
 	if err := environment.CloseStream(deal.ProposalCid); err != nil {

storagemarket/impl/clientstates/cliest_states_test.go

@@ -185,12 +185,14 @@ func TestVerifyResponse(t *testing.T) {
 				State:          storagemarket.StorageDealProposalRejected,
 				Proposal:       proposalNd.Cid(),
 				PublishMessage: publishMessage,
+				Message:        "because reasons",
 			},
 			Signature: tut.MakeTestSignature(),
 		}))
+		expErr := fmt.Sprintf("deal failed: (State=%d) because reasons", storagemarket.StorageDealProposalRejected)
 		runVerifyResponse(t, node(false), nil, stream, nil, func(deal storagemarket.ClientDeal) {
 			require.Equal(t, deal.State, storagemarket.StorageDealFailing)
-			require.Equal(t, deal.Message, fmt.Sprintf("deal wasn't accepted (State=%d)", storagemarket.StorageDealProposalRejected))
+			require.Equal(t, expErr, deal.Message)
 		})
 	})