go-nostr
========
A set of useful things for [Nostr Protocol](https://github.com/nostr-protocol/nostr) implementations.
### Subscribing to a set of relays
```go
pool := nostr.NewRelayPool()
pool.Add("wss://relay.nostr.com/", nostr.SimplePolicy{Read: true, Write: true})
pool.Add("wss://nostrrelay.example.com/", nostr.SimplePolicy{Read: true, Write: true})
for notice := range pool.Notices {
log.Printf("%s has sent a notice: '%s'\n", notice.Relay, notice.Message)
}
```
### Listening for events
```go
subId, allEvents, uniqueEvents := pool.Sub(nostr.Filters{
{
Authors: []string{"0ded86bf80c76847320b16f22b7451c08169434837a51ad5fe3b178af6c35f5d"},
Kinds: []int{nostr.KindTextNote}, // or {1}
},
})
go func() {
for event := range uniqueEvents {
log.Print(event)
}
}()
time.Sleep(5 * time.Second)
sub.Unsub()
```
### Publishing an event
```go
secretKey := "3f06a81e0a0c2ad34ee9df2a30d87a810da9e3c3881f780755ace5e5e64d30a7"
pool.SecretKey = &secretKey
event, statuses, _ := pool.PublishEvent(&nostr.Event{
CreatedAt: time.Now(),
Kind: nostr.KindTextNote,
Tags: make(nostr.Tags, 0),
Content: "hello",
})
log.Print(event.PubKey)
log.Print(event.ID)
log.Print(event.Sig)
for status := range statuses {
switch status.Status {
case nostr.PublishStatusSent:
fmt.Printf("Sent event %s to '%s'.\n", event.ID, status.Relay)
case nostr.PublishStatusFailed:
fmt.Printf("Failed to send event %s to '%s'.\n", event.ID, status.Relay)
case nostr.PublishStatusSucceeded:
fmt.Printf("Event seen %s on '%s'.\n", event.ID, status.Relay)
}
}
```
### Generating a key
``` go
sk, _ := nostr.GenerateKey()
fmt.Println("sk:", sk)
fmt.Println("pk:", nostr.GetPublicKey(sk))
```
### Example Program
```
go run example/example.go
```