116 lines
3.4 KiB
Go
116 lines
3.4 KiB
Go
package ethash
|
|
|
|
import (
|
|
"encoding/json"
|
|
"io/ioutil"
|
|
"math/big"
|
|
"net"
|
|
"net/http"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
)
|
|
|
|
// Tests whether remote HTTP servers are correctly notified of new work.
|
|
func TestRemoteNotify(t *testing.T) {
|
|
// Start a simple webserver to capture notifications
|
|
sink := make(chan [3]string)
|
|
|
|
server := &http.Server{
|
|
Handler: http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
|
|
blob, err := ioutil.ReadAll(req.Body)
|
|
if err != nil {
|
|
t.Fatalf("failed to read miner notification: %v", err)
|
|
}
|
|
var work [3]string
|
|
if err := json.Unmarshal(blob, &work); err != nil {
|
|
t.Fatalf("failed to unmarshal miner notification: %v", err)
|
|
}
|
|
sink <- work
|
|
}),
|
|
}
|
|
// Open a custom listener to extract its local address
|
|
listener, err := net.Listen("tcp", "localhost:0")
|
|
if err != nil {
|
|
t.Fatalf("failed to open notification server: %v", err)
|
|
}
|
|
defer listener.Close()
|
|
|
|
go server.Serve(listener)
|
|
|
|
// Create the custom ethash engine
|
|
ethash := NewTester([]string{"http://" + listener.Addr().String()})
|
|
defer ethash.Close()
|
|
|
|
// Stream a work task and ensure the notification bubbles out
|
|
header := &types.Header{Number: big.NewInt(1), Difficulty: big.NewInt(100)}
|
|
block := types.NewBlockWithHeader(header)
|
|
|
|
ethash.Seal(nil, block, nil)
|
|
select {
|
|
case work := <-sink:
|
|
if want := header.HashNoNonce().Hex(); work[0] != want {
|
|
t.Errorf("work packet hash mismatch: have %s, want %s", work[0], want)
|
|
}
|
|
if want := common.BytesToHash(SeedHash(header.Number.Uint64())).Hex(); work[1] != want {
|
|
t.Errorf("work packet seed mismatch: have %s, want %s", work[1], want)
|
|
}
|
|
target := new(big.Int).Div(new(big.Int).Lsh(big.NewInt(1), 256), header.Difficulty)
|
|
if want := common.BytesToHash(target.Bytes()).Hex(); work[2] != want {
|
|
t.Errorf("work packet target mismatch: have %s, want %s", work[2], want)
|
|
}
|
|
case <-time.After(time.Second):
|
|
t.Fatalf("notification timed out")
|
|
}
|
|
}
|
|
|
|
// Tests that pushing work packages fast to the miner doesn't cause any daa race
|
|
// issues in the notifications.
|
|
func TestRemoteMultiNotify(t *testing.T) {
|
|
// Start a simple webserver to capture notifications
|
|
sink := make(chan [3]string, 64)
|
|
|
|
server := &http.Server{
|
|
Handler: http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
|
|
blob, err := ioutil.ReadAll(req.Body)
|
|
if err != nil {
|
|
t.Fatalf("failed to read miner notification: %v", err)
|
|
}
|
|
var work [3]string
|
|
if err := json.Unmarshal(blob, &work); err != nil {
|
|
t.Fatalf("failed to unmarshal miner notification: %v", err)
|
|
}
|
|
sink <- work
|
|
}),
|
|
}
|
|
// Open a custom listener to extract its local address
|
|
listener, err := net.Listen("tcp", "localhost:0")
|
|
if err != nil {
|
|
t.Fatalf("failed to open notification server: %v", err)
|
|
}
|
|
defer listener.Close()
|
|
|
|
go server.Serve(listener)
|
|
|
|
// Create the custom ethash engine
|
|
ethash := NewTester([]string{"http://" + listener.Addr().String()})
|
|
defer ethash.Close()
|
|
|
|
// Stream a lot of work task and ensure all the notifications bubble out
|
|
for i := 0; i < cap(sink); i++ {
|
|
header := &types.Header{Number: big.NewInt(int64(i)), Difficulty: big.NewInt(100)}
|
|
block := types.NewBlockWithHeader(header)
|
|
|
|
ethash.Seal(nil, block, nil)
|
|
}
|
|
for i := 0; i < cap(sink); i++ {
|
|
select {
|
|
case <-sink:
|
|
case <-time.After(250 * time.Millisecond):
|
|
t.Fatalf("notification %d timed out", i)
|
|
}
|
|
}
|
|
}
|