plugeth/p2p/server_test.go
Felix Lange 5ba51594c7 p2p: use package rlp to encode messages
Message encoding functions have been renamed to catch any uses.
The switch to the new encoder can cause subtle incompatibilities.
If there are any users outside of our tree, they will at least be
alerted that there was a change.

NewMsg no longer exists. The replacements for EncodeMsg are called
Send and SendItems.
2015-03-19 15:11:02 +01:00

180 lines
4.3 KiB
Go

package p2p
import (
"bytes"
"crypto/ecdsa"
"io"
"math/rand"
"net"
"sync"
"testing"
"time"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/crypto/sha3"
"github.com/ethereum/go-ethereum/p2p/discover"
)
func startTestServer(t *testing.T, pf newPeerHook) *Server {
server := &Server{
Name: "test",
MaxPeers: 10,
ListenAddr: "127.0.0.1:0",
PrivateKey: newkey(),
newPeerHook: pf,
setupFunc: func(fd net.Conn, prv *ecdsa.PrivateKey, our *protoHandshake, dial *discover.Node) (*conn, error) {
id := randomID()
rw := newRlpxFrameRW(fd, secrets{
MAC: zero16,
AES: zero16,
IngressMAC: sha3.NewKeccak256(),
EgressMAC: sha3.NewKeccak256(),
})
return &conn{
MsgReadWriter: rw,
protoHandshake: &protoHandshake{ID: id, Version: baseProtocolVersion},
}, nil
},
}
if err := server.Start(); err != nil {
t.Fatalf("Could not start server: %v", err)
}
return server
}
func TestServerListen(t *testing.T) {
defer testlog(t).detach()
// start the test server
connected := make(chan *Peer)
srv := startTestServer(t, func(p *Peer) {
if p == nil {
t.Error("peer func called with nil conn")
}
connected <- p
})
defer close(connected)
defer srv.Stop()
// dial the test server
conn, err := net.DialTimeout("tcp", srv.ListenAddr, 5*time.Second)
if err != nil {
t.Fatalf("could not dial: %v", err)
}
defer conn.Close()
select {
case peer := <-connected:
if peer.LocalAddr().String() != conn.RemoteAddr().String() {
t.Errorf("peer started with wrong conn: got %v, want %v",
peer.LocalAddr(), conn.RemoteAddr())
}
case <-time.After(1 * time.Second):
t.Error("server did not accept within one second")
}
}
func TestServerDial(t *testing.T) {
defer testlog(t).detach()
// run a one-shot TCP server to handle the connection.
listener, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatalf("could not setup listener: %v")
}
defer listener.Close()
accepted := make(chan net.Conn)
go func() {
conn, err := listener.Accept()
if err != nil {
t.Error("accept error:", err)
return
}
conn.Close()
accepted <- conn
}()
// start the server
connected := make(chan *Peer)
srv := startTestServer(t, func(p *Peer) { connected <- p })
defer close(connected)
defer srv.Stop()
// tell the server to connect
tcpAddr := listener.Addr().(*net.TCPAddr)
srv.SuggestPeer(&discover.Node{IP: tcpAddr.IP, TCPPort: tcpAddr.Port})
select {
case conn := <-accepted:
select {
case peer := <-connected:
if peer.RemoteAddr().String() != conn.LocalAddr().String() {
t.Errorf("peer started with wrong conn: got %v, want %v",
peer.RemoteAddr(), conn.LocalAddr())
}
// TODO: validate more fields
case <-time.After(1 * time.Second):
t.Error("server did not launch peer within one second")
}
case <-time.After(1 * time.Second):
t.Error("server did not connect within one second")
}
}
func TestServerBroadcast(t *testing.T) {
defer testlog(t).detach()
var connected sync.WaitGroup
srv := startTestServer(t, func(p *Peer) {
p.running = matchProtocols([]Protocol{discard}, []Cap{discard.cap()}, p.rw)
connected.Done()
})
defer srv.Stop()
// create a few peers
var conns = make([]net.Conn, 8)
connected.Add(len(conns))
deadline := time.Now().Add(3 * time.Second)
dialer := &net.Dialer{Deadline: deadline}
for i := range conns {
conn, err := dialer.Dial("tcp", srv.ListenAddr)
if err != nil {
t.Fatalf("conn %d: dial error: %v", i, err)
}
defer conn.Close()
conn.SetDeadline(deadline)
conns[i] = conn
}
connected.Wait()
// broadcast one message
srv.Broadcast("discard", 0, []string{"foo"})
golden := unhex("66e94d166f0a2c3b884cfa59ca34")
// check that the message has been written everywhere
for i, conn := range conns {
buf := make([]byte, len(golden))
if _, err := io.ReadFull(conn, buf); err != nil {
t.Errorf("conn %d: read error: %v", i, err)
} else if !bytes.Equal(buf, golden) {
t.Errorf("conn %d: msg mismatch\ngot: %x\nwant: %x", i, buf, golden)
}
}
}
func newkey() *ecdsa.PrivateKey {
key, err := crypto.GenerateKey()
if err != nil {
panic("couldn't generate key: " + err.Error())
}
return key
}
func randomID() (id discover.NodeID) {
for i := range id {
id[i] = byte(rand.Intn(255))
}
return id
}