swarm: Lightnode mode: disable sync, retrieve, subscription (#17899)

* swarm: Lightnode mode: disable sync, retrieve, subscription

* swarm/network/stream: assign error and check in one line

* swarm: restructured RegistryOption initializing

* swarm: empty commit to retrigger CI build

* swarm/network/stream: Added comments explaining RegistryOptions

1 files changed, 210 insertions, 0 deletions

diff --git a/swarm/network/stream/lightnode_test.go b/swarm/network/stream/lightnode_test.go
new file mode 100644
index 000000000..0d3bc7f54
--- /dev/null
+++ b/swarm/network/stream/lightnode_test.go
@@ -0,0 +1,210 @@
+// Copyright 2018 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+package stream
+
+import (
+	"testing"
+
+	p2ptest "github.com/ethereum/go-ethereum/p2p/testing"
+)
+
+// This test checks the default behavior of the server, that is
+// when it is serving Retrieve requests.
+func TestLigthnodeRetrieveRequestWithRetrieve(t *testing.T) {
+	registryOptions := &RegistryOptions{
+		DoServeRetrieve: true,
+	}
+	tester, _, _, teardown, err := newStreamerTester(t, registryOptions)
+	defer teardown()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	node := tester.Nodes[0]
+
+	stream := NewStream(swarmChunkServerStreamName, "", false)
+
+	err = tester.TestExchanges(p2ptest.Exchange{
+		Label: "SubscribeMsg",
+		Triggers: []p2ptest.Trigger{
+			{
+				Code: 4,
+				Msg: &SubscribeMsg{
+					Stream: stream,
+				},
+				Peer: node.ID(),
+			},
+		},
+	})
+	if err != nil {
+		t.Fatalf("Got %v", err)
+	}
+
+	err = tester.TestDisconnected(&p2ptest.Disconnect{Peer: node.ID()})
+	if err == nil || err.Error() != "timed out waiting for peers to disconnect" {
+		t.Fatalf("Expected no disconnect, got %v", err)
+	}
+}
+
+// This test checks the Lightnode behavior of server, when serving Retrieve
+// requests are disabled
+func TestLigthnodeRetrieveRequestWithoutRetrieve(t *testing.T) {
+	registryOptions := &RegistryOptions{
+		DoServeRetrieve: false,
+	}
+	tester, _, _, teardown, err := newStreamerTester(t, registryOptions)
+	defer teardown()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	node := tester.Nodes[0]
+
+	stream := NewStream(swarmChunkServerStreamName, "", false)
+
+	err = tester.TestExchanges(
+		p2ptest.Exchange{
+			Label: "SubscribeMsg",
+			Triggers: []p2ptest.Trigger{
+				{
+					Code: 4,
+					Msg: &SubscribeMsg{
+						Stream: stream,
+					},
+					Peer: node.ID(),
+				},
+			},
+			Expects: []p2ptest.Expect{
+				{
+					Code: 7,
+					Msg: &SubscribeErrorMsg{
+						Error: "stream RETRIEVE_REQUEST not registered",
+					},
+					Peer: node.ID(),
+				},
+			},
+		})
+	if err != nil {
+		t.Fatalf("Got %v", err)
+	}
+}
+
+// This test checks the default behavior of the server, that is
+// when syncing is enabled.
+func TestLigthnodeRequestSubscriptionWithSync(t *testing.T) {
+	registryOptions := &RegistryOptions{
+		DoSync: true,
+	}
+	tester, _, _, teardown, err := newStreamerTester(t, registryOptions)
+	defer teardown()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	node := tester.Nodes[0]
+
+	syncStream := NewStream("SYNC", FormatSyncBinKey(1), false)
+
+	err = tester.TestExchanges(
+		p2ptest.Exchange{
+			Label: "RequestSubscription",
+			Triggers: []p2ptest.Trigger{
+				{
+					Code: 8,
+					Msg: &RequestSubscriptionMsg{
+						Stream: syncStream,
+					},
+					Peer: node.ID(),
+				},
+			},
+			Expects: []p2ptest.Expect{
+				{
+					Code: 4,
+					Msg: &SubscribeMsg{
+						Stream: syncStream,
+					},
+					Peer: node.ID(),
+				},
+			},
+		})
+
+	if err != nil {
+		t.Fatalf("Got %v", err)
+	}
+}
+
+// This test checks the Lightnode behavior of the server, that is
+// when syncing is disabled.
+func TestLigthnodeRequestSubscriptionWithoutSync(t *testing.T) {
+	registryOptions := &RegistryOptions{
+		DoSync: false,
+	}
+	tester, _, _, teardown, err := newStreamerTester(t, registryOptions)
+	defer teardown()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	node := tester.Nodes[0]
+
+	syncStream := NewStream("SYNC", FormatSyncBinKey(1), false)
+
+	err = tester.TestExchanges(p2ptest.Exchange{
+		Label: "RequestSubscription",
+		Triggers: []p2ptest.Trigger{
+			{
+				Code: 8,
+				Msg: &RequestSubscriptionMsg{
+					Stream: syncStream,
+				},
+				Peer: node.ID(),
+			},
+		},
+		Expects: []p2ptest.Expect{
+			{
+				Code: 7,
+				Msg: &SubscribeErrorMsg{
+					Error: "stream SYNC not registered",
+				},
+				Peer: node.ID(),
+			},
+		},
+	}, p2ptest.Exchange{
+		Label: "RequestSubscription",
+		Triggers: []p2ptest.Trigger{
+			{
+				Code: 4,
+				Msg: &SubscribeMsg{
+					Stream: syncStream,
+				},
+				Peer: node.ID(),
+			},
+		},
+		Expects: []p2ptest.Expect{
+			{
+				Code: 7,
+				Msg: &SubscribeErrorMsg{
+					Error: "stream SYNC not registered",
+				},
+				Peer: node.ID(),
+			},
+		},
+	})
+
+	if err != nil {
+		t.Fatalf("Got %v", err)
+	}
+}