mirror of https://github.com/ethereum/go-ethereum
Merge pull request #17347 from karalabe/miner-notify
cmd, consensus/ethash, eth: miner push notificationspull/16490/merge
Péter Szilágyi
6 years ago
committed by
GitHub
commit
d8328a96b4
@ -0,0 +1,115 @@ |
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package ethash |
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|
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import ( |
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"encoding/json" |
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"io/ioutil" |
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"math/big" |
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"net" |
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"net/http" |
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"testing" |
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"time" |
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|
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"github.com/ethereum/go-ethereum/common" |
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"github.com/ethereum/go-ethereum/core/types" |
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) |
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// Tests whether remote HTTP servers are correctly notified of new work.
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func TestRemoteNotify(t *testing.T) { |
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// Start a simple webserver to capture notifications
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sink := make(chan [3]string) |
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server := &http.Server{ |
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Handler: http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) { |
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blob, err := ioutil.ReadAll(req.Body) |
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if err != nil { |
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t.Fatalf("failed to read miner notification: %v", err) |
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} |
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var work [3]string |
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if err := json.Unmarshal(blob, &work); err != nil { |
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t.Fatalf("failed to unmarshal miner notification: %v", err) |
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} |
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sink <- work |
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}), |
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} |
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// Open a custom listener to extract its local address
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listener, err := net.Listen("tcp", "localhost:0") |
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if err != nil { |
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t.Fatalf("failed to open notification server: %v", err) |
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} |
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defer listener.Close() |
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go server.Serve(listener) |
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// Create the custom ethash engine
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ethash := NewTester([]string{"http://" + listener.Addr().String()}) |
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defer ethash.Close() |
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// Stream a work task and ensure the notification bubbles out
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header := &types.Header{Number: big.NewInt(1), Difficulty: big.NewInt(100)} |
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block := types.NewBlockWithHeader(header) |
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ethash.Seal(nil, block, nil) |
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select { |
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case work := <-sink: |
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if want := header.HashNoNonce().Hex(); work[0] != want { |
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t.Errorf("work packet hash mismatch: have %s, want %s", work[0], want) |
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} |
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if want := common.BytesToHash(SeedHash(header.Number.Uint64())).Hex(); work[1] != want { |
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t.Errorf("work packet seed mismatch: have %s, want %s", work[1], want) |
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} |
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target := new(big.Int).Div(new(big.Int).Lsh(big.NewInt(1), 256), header.Difficulty) |
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if want := common.BytesToHash(target.Bytes()).Hex(); work[2] != want { |
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t.Errorf("work packet target mismatch: have %s, want %s", work[2], want) |
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} |
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case <-time.After(time.Second): |
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t.Fatalf("notification timed out") |
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} |
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} |
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// Tests that pushing work packages fast to the miner doesn't cause any daa race
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// issues in the notifications.
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func TestRemoteMultiNotify(t *testing.T) { |
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// Start a simple webserver to capture notifications
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sink := make(chan [3]string, 1024) |
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server := &http.Server{ |
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Handler: http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) { |
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blob, err := ioutil.ReadAll(req.Body) |
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if err != nil { |
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t.Fatalf("failed to read miner notification: %v", err) |
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} |
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var work [3]string |
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if err := json.Unmarshal(blob, &work); err != nil { |
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t.Fatalf("failed to unmarshal miner notification: %v", err) |
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} |
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sink <- work |
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}), |
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} |
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// Open a custom listener to extract its local address
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listener, err := net.Listen("tcp", "localhost:0") |
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if err != nil { |
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t.Fatalf("failed to open notification server: %v", err) |
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} |
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defer listener.Close() |
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go server.Serve(listener) |
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// Create the custom ethash engine
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ethash := NewTester([]string{"http://" + listener.Addr().String()}) |
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defer ethash.Close() |
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// Stream a lot of work task and ensure all the notifications bubble out
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for i := 0; i < cap(sink); i++ { |
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header := &types.Header{Number: big.NewInt(int64(i)), Difficulty: big.NewInt(100)} |
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block := types.NewBlockWithHeader(header) |
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ethash.Seal(nil, block, nil) |
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} |
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for i := 0; i < cap(sink); i++ { |
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select { |
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case <-sink: |
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case <-time.After(250 * time.Millisecond): |
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t.Fatalf("notification %d timed out", i) |
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} |
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} |
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} |
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