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package whisper
import (
"fmt"
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/nat"
)
type testNode struct {
server *p2p.Server
client *Whisper
}
func startNodes(n int) ([]*testNode, error) {
// Start up the cluster of nodes
cluster := make([]*testNode, 0, n)
for i := 0; i < n; i++ {
shh := New()
// Generate the node identity
key, err := crypto.GenerateKey()
if err != nil {
return nil, err
}
name := common.MakeName(fmt.Sprintf("whisper-go-test-%d", i), "1.0")
// Create an Ethereum server to communicate through
server := &p2p.Server{
PrivateKey: key,
MaxPeers: 10,
Name: name,
Protocols: []p2p.Protocol{shh.Protocol()},
ListenAddr: fmt.Sprintf(":%d", 30300+i),
NAT: nat.Any(),
}
if err := server.Start(); err != nil {
return nil, err
}
// Peer online, store and iterate
cluster = append(cluster, &testNode{
server: server,
client: shh,
})
}
// Manually wire together the cluster nodes
root := cluster[0].server.Self()
for _, node := range cluster[1:] {
node.server.SuggestPeer(root)
}
return cluster, nil
}
func stopNodes(cluster []*testNode) {
for _, node := range cluster {
node.server.Stop()
}
}
func TestSelfMessage(t *testing.T) {
// Start the single node cluster
cluster, err := startNodes(1)
if err != nil {
t.Fatalf("failed to boot test cluster: %v", err)
}
defer stopNodes(cluster)
client := cluster[0].client
// Start watching for self messages, signal any arrivals
self := client.NewIdentity()
done := make(chan struct{})
client.Watch(Filter{
To: &self.PublicKey,
Fn: func(msg *Message) {
close(done)
},
})
// Send a dummy message to oneself
msg := NewMessage([]byte("self whisper"))
envelope, err := msg.Wrap(DefaultPoW, Options{
From: self,
To: &self.PublicKey,
TTL: DefaultTTL,
})
if err != nil {
t.Fatalf("failed to wrap message: %v", err)
}
// Dump the message into the system and wait for it to pop back out
if err := client.Send(envelope); err != nil {
t.Fatalf("failed to send self-message: %v", err)
}
select {
case <-done:
case <-time.After(time.Second):
t.Fatalf("self-message receive timeout")
}
}
func TestDirectMessage(t *testing.T) {
// Start the sender-recipient cluster
cluster, err := startNodes(2)
if err != nil {
t.Fatalf("failed to boot test cluster: %v", err)
}
defer stopNodes(cluster)
sender := cluster[0].client
senderId := sender.NewIdentity()
recipient := cluster[1].client
recipientId := recipient.NewIdentity()
// Watch for arriving messages on the recipient
done := make(chan struct{})
recipient.Watch(Filter{
To: &recipientId.PublicKey,
Fn: func(msg *Message) {
close(done)
},
})
// Send a dummy message from the sender
msg := NewMessage([]byte("direct whisper"))
envelope, err := msg.Wrap(DefaultPoW, Options{
From: senderId,
To: &recipientId.PublicKey,
TTL: DefaultTTL,
})
if err != nil {
t.Fatalf("failed to wrap message: %v", err)
}
if err := sender.Send(envelope); err != nil {
t.Fatalf("failed to send direct message: %v", err)
}
// Wait for an arrival or a timeout
select {
case <-done:
case <-time.After(time.Second):
t.Fatalf("direct message receive timeout")
}
}
func TestAnonymousBroadcast(t *testing.T) {
testBroadcast(true, t)
}
func TestIdentifiedBroadcast(t *testing.T) {
testBroadcast(false, t)
}
func testBroadcast(anonymous bool, t *testing.T) {
// Start the single sender multi recipient cluster
cluster, err := startNodes(3)
if err != nil {
t.Fatalf("failed to boot test cluster: %v", err)
}
defer stopNodes(cluster)
sender := cluster[0].client
targets := make([]*Whisper, len(cluster)-1)
for i, node := range cluster[1:] {
targets[i] = node.client
if !anonymous {
targets[i].NewIdentity()
}
}
// Watch for arriving messages on the recipients
dones := make([]chan struct{}, len(targets))
for i := 0; i < len(targets); i++ {
done := make(chan struct{}) // need for the closure
dones[i] = done
targets[i].Watch(Filter{
Topics: NewTopicsFromStrings("broadcast topic"),
Fn: func(msg *Message) {
close(done)
},
})
}
// Send a dummy message from the sender
msg := NewMessage([]byte("broadcast whisper"))
envelope, err := msg.Wrap(DefaultPoW, Options{
Topics: NewTopicsFromStrings("broadcast topic"),
TTL: DefaultTTL,
})
if err != nil {
t.Fatalf("failed to wrap message: %v", err)
}
if err := sender.Send(envelope); err != nil {
t.Fatalf("failed to send broadcast message: %v", err)
}
// Wait for an arrival on each recipient, or timeouts
timeout := time.After(time.Second)
for _, done := range dones {
select {
case <-done:
case <-timeout:
t.Fatalf("broadcast message receive timeout")
}
}
}
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