github.com/chain4travel/go-ethereum@v1.9.7/les/ulc_test.go (about)

     1  // Copyright 2018 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package les
    18  
    19  import (
    20  	"crypto/rand"
    21  	"fmt"
    22  	"net"
    23  	"testing"
    24  	"time"
    25  
    26  	"github.com/ethereum/go-ethereum/crypto"
    27  	"github.com/ethereum/go-ethereum/p2p"
    28  	"github.com/ethereum/go-ethereum/p2p/enode"
    29  )
    30  
    31  func TestULCAnnounceThresholdLes2(t *testing.T) { testULCAnnounceThreshold(t, 2) }
    32  func TestULCAnnounceThresholdLes3(t *testing.T) { testULCAnnounceThreshold(t, 3) }
    33  
    34  func testULCAnnounceThreshold(t *testing.T, protocol int) {
    35  	// todo figure out why it takes fetcher so longer to fetcher the announced header.
    36  	t.Skip("Sometimes it can failed")
    37  	var cases = []struct {
    38  		height    []int
    39  		threshold int
    40  		expect    uint64
    41  	}{
    42  		{[]int{1}, 100, 1},
    43  		{[]int{0, 0, 0}, 100, 0},
    44  		{[]int{1, 2, 3}, 30, 3},
    45  		{[]int{1, 2, 3}, 60, 2},
    46  		{[]int{3, 2, 1}, 67, 1},
    47  		{[]int{3, 2, 1}, 100, 1},
    48  	}
    49  	for _, testcase := range cases {
    50  		var (
    51  			servers   []*testServer
    52  			teardowns []func()
    53  			nodes     []*enode.Node
    54  			ids       []string
    55  		)
    56  		for i := 0; i < len(testcase.height); i++ {
    57  			s, n, teardown := newServerPeer(t, 0, protocol)
    58  
    59  			servers = append(servers, s)
    60  			nodes = append(nodes, n)
    61  			teardowns = append(teardowns, teardown)
    62  			ids = append(ids, n.String())
    63  		}
    64  		c, teardown := newLightPeer(t, protocol, ids, testcase.threshold)
    65  
    66  		// Connect all servers.
    67  		for i := 0; i < len(servers); i++ {
    68  			connect(servers[i].handler, nodes[i].ID(), c.handler, protocol)
    69  		}
    70  		for i := 0; i < len(servers); i++ {
    71  			for j := 0; j < testcase.height[i]; j++ {
    72  				servers[i].backend.Commit()
    73  			}
    74  		}
    75  		time.Sleep(1500 * time.Millisecond) // Ensure the fetcher has done its work.
    76  		head := c.handler.backend.blockchain.CurrentHeader().Number.Uint64()
    77  		if head != testcase.expect {
    78  			t.Fatalf("chain height mismatch, want %d, got %d", testcase.expect, head)
    79  		}
    80  
    81  		// Release all servers and client resources.
    82  		teardown()
    83  		for i := 0; i < len(teardowns); i++ {
    84  			teardowns[i]()
    85  		}
    86  	}
    87  }
    88  
    89  func connect(server *serverHandler, serverId enode.ID, client *clientHandler, protocol int) (*peer, *peer, error) {
    90  	// Create a message pipe to communicate through
    91  	app, net := p2p.MsgPipe()
    92  
    93  	var id enode.ID
    94  	rand.Read(id[:])
    95  
    96  	peer1 := newPeer(protocol, NetworkId, true, p2p.NewPeer(serverId, "", nil), net) // Mark server as trusted
    97  	peer2 := newPeer(protocol, NetworkId, false, p2p.NewPeer(id, "", nil), app)
    98  
    99  	// Start the peerLight on a new thread
   100  	errc1 := make(chan error, 1)
   101  	errc2 := make(chan error, 1)
   102  	go func() {
   103  		select {
   104  		case <-server.closeCh:
   105  			errc1 <- p2p.DiscQuitting
   106  		case errc1 <- server.handle(peer2):
   107  		}
   108  	}()
   109  	go func() {
   110  		select {
   111  		case <-client.closeCh:
   112  			errc1 <- p2p.DiscQuitting
   113  		case errc1 <- client.handle(peer1):
   114  		}
   115  	}()
   116  
   117  	select {
   118  	case <-time.After(time.Millisecond * 100):
   119  	case err := <-errc1:
   120  		return nil, nil, fmt.Errorf("peerLight handshake error: %v", err)
   121  	case err := <-errc2:
   122  		return nil, nil, fmt.Errorf("peerFull handshake error: %v", err)
   123  	}
   124  	return peer1, peer2, nil
   125  }
   126  
   127  // newServerPeer creates server peer.
   128  func newServerPeer(t *testing.T, blocks int, protocol int) (*testServer, *enode.Node, func()) {
   129  	s, teardown := newServerEnv(t, blocks, protocol, nil, false, false, 0)
   130  	key, err := crypto.GenerateKey()
   131  	if err != nil {
   132  		t.Fatal("generate key err:", err)
   133  	}
   134  	s.handler.server.privateKey = key
   135  	n := enode.NewV4(&key.PublicKey, net.ParseIP("127.0.0.1"), 35000, 35000)
   136  	return s, n, teardown
   137  }
   138  
   139  // newLightPeer creates node with light sync mode
   140  func newLightPeer(t *testing.T, protocol int, ulcServers []string, ulcFraction int) (*testClient, func()) {
   141  	_, c, teardown := newClientServerEnv(t, 0, protocol, nil, ulcServers, ulcFraction, false, false)
   142  	return c, teardown
   143  }