splitting the code into multiple packages (wip)

core/envelopes.go

@@ -1,4 +1,4 @@
-package nostr
+package core
 
 import (
 	"bytes"

core/envelopes_test.go

@@ -1,4 +1,4 @@
-package nostr
+package core
 
 import (
 	"encoding/json"

core/event.go

@@ -1,4 +1,4 @@
-package nostr
+package core
 
 import (
 	"crypto/sha256"

core/event_easyjson.go

@@ -1,4 +1,4 @@
-package nostr
+package core
 
 import (
 	json "encoding/json"

core/event_extra.go

@@ -1,4 +1,4 @@
-package nostr
+package core
 
 // SetExtra sets an out-of-the-spec value under the given key into the event object.
 func (evt *Event) SetExtra(key string, value any) {

core/event_test.go

@@ -1,4 +1,4 @@
-package nostr
+package core
 
 import (
 	"encoding/json"

core/filter.go

@@ -1,4 +1,4 @@
-package nostr
+package core
 
 import (
 	"encoding/json"

core/filter_easyjson.go

@@ -1,4 +1,4 @@
-package nostr
+package core
 
 import (
 	json "encoding/json"

core/filter_test.go

@@ -1,4 +1,4 @@
-package nostr
+package core
 
 import (
 	"encoding/json"

core/helpers.go

@@ -1,27 +1,9 @@
-package nostr
+package core
 
 import (
-	"sync"
-	"unsafe"
-
 	"golang.org/x/exp/constraints"
 )
 
-const MAX_LOCKS = 50
-
-var namedMutexPool = make([]sync.Mutex, MAX_LOCKS)
-
-//go:noescape
-//go:linkname memhash runtime.memhash
-func memhash(p unsafe.Pointer, h, s uintptr) uintptr
-
-func namedLock(name string) (unlock func()) {
-	sptr := unsafe.StringData(name)
-	idx := uint64(memhash(unsafe.Pointer(sptr), 0, uintptr(len(name)))) % MAX_LOCKS
-	namedMutexPool[idx].Lock()
-	return namedMutexPool[idx].Unlock
-}
-
 func similar[E constraints.Ordered](as, bs []E) bool {
 	if len(as) != len(bs) {
 		return false

core/keys.go

@@ -1,4 +1,4 @@
-package nostr
+package core
 
 import (
 	"crypto/rand"

core/pointers.go

@@ -1,4 +1,4 @@
-package nostr
+package core
 
 type ProfilePointer struct {
 	PublicKey string   `json:"pubkey"`

core/tag_test.go

@@ -1,4 +1,4 @@
-package nostr
+package core
 
 import (
 	"testing"

core/tags.go

@@ -1,11 +1,12 @@
-package nostr
+package core
 
 import (
 	"encoding/json"
 	"errors"
+	"slices"
 	"strings"
 
-	"slices"
+	"github.com/nbd-wtf/go-nostr/utils"
 )
 
 type Tag []string
@@ -54,7 +55,7 @@ func (tag Tag) Value() string {
 
 func (tag Tag) Relay() string {
 	if (tag[0] == "e" || tag[0] == "p") && len(tag) > 2 {
-		return NormalizeURL(tag[2])
+		return utils.NormalizeURL(tag[2])
 	}
 	return ""
 }

core/timestamp.go

@@ -1,4 +1,4 @@
-package nostr
+package core
 
 import "time"
 

lib.go

@@ -0,0 +1,61 @@
+package nostr
+
+import (
+	"github.com/nbd-wtf/go-nostr/core"
+	"github.com/nbd-wtf/go-nostr/relays"
+	"github.com/nbd-wtf/go-nostr/utils"
+)
+
+type (
+	Event     core.Event
+	Filter    core.Filter
+	Filters   core.Filters
+	Timestamp core.Timestamp
+	Tag       core.Tag
+	TagMap    core.TagMap
+
+	ProfilePointer core.ProfilePointer
+	EventPointer   core.EventPointer
+	EntityPointer  core.EntityPointer
+
+	AuthEnvelope   core.AuthEnvelope
+	OKEnvelope     core.OKEnvelope
+	NoticeEnvelope core.NoticeEnvelope
+	EventEnvelope  core.EventEnvelope
+	CloseEnvelope  core.CloseEnvelope
+	ClosedEnvelope core.ClosedEnvelope
+	CountEnvelope  core.CountEnvelope
+	EOSEEnvelope   core.EOSEEnvelope
+	ReqEnvelope    core.ReqEnvelope
+	Envelope       core.Envelope
+
+	Relay              relays.Relay
+	RelayOption        relays.RelayOption
+	SimplePool         relays.SimplePool
+	PoolOption         relays.PoolOption
+	Subscription       relays.Subscription
+	SubscriptionOption relays.SubscriptionOption
+	IncomingEvent      relays.IncomingEvent
+	WithAuthHandler    relays.WithAuthHandler
+	WithLabel          relays.WithLabel
+	WithNoticeHandler  relays.WithNoticeHandler
+
+	RelayStore relays.RelayStore
+	MultiStore relays.MultiStore
+)
+
+var (
+	Now                = core.Now
+	FilterEqual        = core.FilterEqual
+	GeneratePrivateKey = core.GeneratePrivateKey
+	GetPublicKey       = core.GetPublicKey
+	IsValidPublicKey   = core.IsValidPublicKey
+
+	NewSimplePool = relays.NewSimplePool
+	NewRelay      = relays.NewRelay
+
+	IsValid32ByteHex   = utils.IsValid32ByteHex
+	IsValidRelayURL    = utils.IsValidRelayURL
+	NormalizeOKMessage = utils.NormalizeOKMessage
+	NormalizeURL       = utils.NormalizeURL
+)

libsecp256k1/README.md

@@ -8,3 +8,7 @@ cpu: AMD Ryzen 3 3200G with Radeon Vega Graphics
 BenchmarkSignatureVerification/btcec-4         	     145	   7873130 ns/op	  127069 B/op	     579 allocs/op
 BenchmarkSignatureVerification/libsecp256k1-4  	     502	   2314573 ns/op	  112241 B/op	     392 allocs/op
 ```
+
+To use this manually, just import it.
+
+To use it for the `Relay` subscriptions automatic signature verification, compile your application with the Go build tag `libsecp256k1`.

libsecp256k1/benchmark_test.go

@@ -4,14 +4,14 @@ import (
 	"encoding/json"
 	"testing"
 
-	"github.com/nbd-wtf/go-nostr"
+	"github.com/nbd-wtf/go-nostr/core"
 	"github.com/nbd-wtf/go-nostr/test_common"
 )
 
 func BenchmarkSignatureVerification(b *testing.B) {
-	events := make([]*nostr.Event, len(test_common.NormalEvents))
+	events := make([]*core.Event, len(test_common.NormalEvents))
 	for i, jevt := range test_common.NormalEvents {
-		evt := &nostr.Event{}
+		evt := &core.Event{}
 		json.Unmarshal([]byte(jevt), evt)
 		events[i] = evt
 	}
@@ -27,7 +27,7 @@ func BenchmarkSignatureVerification(b *testing.B) {
 	b.Run("libsecp256k1", func(b *testing.B) {
 		for i := 0; i < b.N; i++ {
 			for _, evt := range events {
-				CheckSignature(evt)
+				CheckSignature(*evt)
 			}
 		}
 	})

libsecp256k1/signverify_test.go

@@ -4,15 +4,15 @@ import (
 	"encoding/json"
 	"testing"
 
-	"github.com/nbd-wtf/go-nostr"
+	"github.com/nbd-wtf/go-nostr/core"
 	"github.com/nbd-wtf/go-nostr/test_common"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestEventVerification(t *testing.T) {
 	for _, jevt := range test_common.NormalEvents {
-		evt := &nostr.Event{}
-		json.Unmarshal([]byte(jevt), evt)
+		evt := core.Event{}
+		json.Unmarshal([]byte(jevt), &evt)
 		ok, _ := CheckSignature(evt)
 		shouldBe, _ := evt.CheckSignature()
 		assert.Equal(t, ok, shouldBe, "%s signature must be %s", jevt, shouldBe)

libsecp256k1/verify.go

@@ -5,10 +5,10 @@ import (
 	"encoding/hex"
 	"fmt"
 
-	"github.com/nbd-wtf/go-nostr"
+	"github.com/nbd-wtf/go-nostr/core"
 )
 
-func CheckSignature(evt *nostr.Event) (bool, error) {
+func CheckSignature(evt core.Event) (bool, error) {
 	var pk [32]byte
 	_, err := hex.Decode(pk[:], []byte(evt.PubKey))
 	if err != nil {

relays/connection.go

@@ -1,4 +1,4 @@
-package nostr
+package relays
 
 import (
 	"bytes"

relays/count_test.go

@@ -1,8 +1,10 @@
-package nostr
+package relays
 
 import (
 	"context"
 	"testing"
+
+	"github.com/nbd-wtf/go-nostr/core"
 )
 
 func TestCount(t *testing.T) {
@@ -11,8 +13,8 @@ func TestCount(t *testing.T) {
 	rl := mustRelayConnect(RELAY)
 	defer rl.Close()
 
-	count, err := rl.Count(context.Background(), Filters{
-		{Kinds: []int{KindContactList}, Tags: TagMap{"p": []string{"3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d"}}},
+	count, err := rl.Count(context.Background(), core.Filters{
+		{Kinds: []int{core.KindContactList}, Tags: core.TagMap{"p": []string{"3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d"}}},
 	})
 	if err != nil {
 		t.Errorf("count request failed: %v", err)

relays/eose_test.go

@@ -1,17 +1,19 @@
-package nostr
+package relays
 
 import (
 	"context"
 	"testing"
 	"time"
+
+	"github.com/nbd-wtf/go-nostr/core"
 )
 
 func TestEOSEMadness(t *testing.T) {
 	rl := mustRelayConnect(RELAY)
 	defer rl.Close()
 
-	sub, err := rl.Subscribe(context.Background(), Filters{
-		{Kinds: []int{KindTextNote}, Limit: 2},
+	sub, err := rl.Subscribe(context.Background(), core.Filters{
+		{Kinds: []int{core.KindTextNote}, Limit: 2},
 	})
 	if err != nil {
 		t.Errorf("subscription failed: %v", err)

relays/helpers.go

@@ -0,0 +1,22 @@
+package relays
+
+import (
+	"sync"
+	"unsafe"
+)
+
+const MAX_LOCKS = 50
+
+var namedMutexPool = make([]sync.Mutex, MAX_LOCKS)
+
+//go:noescape
+//go:linkname memhash runtime.memhash
+func memhash(p unsafe.Pointer, h, s uintptr) uintptr
+
+func namedLock(name string) (unlock func()) {
+	sptr := unsafe.StringData(name)
+	idx := uint64(memhash(unsafe.Pointer(sptr), 0, uintptr(len(name)))) % MAX_LOCKS
+	l := &namedMutexPool[idx]
+	l.Lock()
+	return l.Unlock
+}

relays/helpers_test.go

@@ -1,4 +1,4 @@
-package nostr
+package relays
 
 import (
 	"testing"

relays/interface.go

@@ -1,14 +1,16 @@
-package nostr
+package relays
 
 import (
 	"context"
 	"errors"
 	"slices"
+
+	"github.com/nbd-wtf/go-nostr/core"
 )
 
 type RelayStore interface {
-	Publish(ctx context.Context, event Event) error
-	QuerySync(ctx context.Context, filter Filter, opts ...SubscriptionOption) ([]*Event, error)
+	Publish(ctx context.Context, event core.Event) error
+	QuerySync(ctx context.Context, filter core.Filter, opts ...SubscriptionOption) ([]*core.Event, error)
 }
 
 var (
@@ -18,7 +20,7 @@ var (
 
 type MultiStore []RelayStore
 
-func (multi MultiStore) Publish(ctx context.Context, event Event) error {
+func (multi MultiStore) Publish(ctx context.Context, event core.Event) error {
 	errs := make([]error, len(multi))
 	for i, s := range multi {
 		errs[i] = s.Publish(ctx, event)
@@ -26,15 +28,15 @@ func (multi MultiStore) Publish(ctx context.Context, event Event) error {
 	return errors.Join(errs...)
 }
 
-func (multi MultiStore) QuerySync(ctx context.Context, filter Filter, opts ...SubscriptionOption) ([]*Event, error) {
+func (multi MultiStore) QuerySync(ctx context.Context, filter core.Filter, opts ...SubscriptionOption) ([]*core.Event, error) {
 	errs := make([]error, len(multi))
-	events := make([]*Event, 0, max(filter.Limit, 10))
+	events := make([]*core.Event, 0, max(filter.Limit, 10))
 	for i, s := range multi {
 		res, err := s.QuerySync(ctx, filter, opts...)
 		errs[i] = err
 		events = append(events, res...)
 	}
-	slices.SortFunc(events, func(a, b *Event) int {
+	slices.SortFunc(events, func(a, b *core.Event) int {
 		if b.CreatedAt > a.CreatedAt {
 			return 1
 		} else if b.CreatedAt < a.CreatedAt {

relays/log.go

@@ -1,4 +1,4 @@
-package nostr
+package relays
 
 import (
 	"log"

relays/log_debug.go

@@ -1,6 +1,6 @@
 //go:build debug
 
-package nostr
+package relays
 
 import (
 	"encoding/json"

relays/log_normal.go

@@ -1,6 +1,6 @@
 //go:build !debug
 
-package nostr
+package relays
 
 func debugLogf(str string, args ...any) {
 }

relays/pool.go

@@ -1,4 +1,4 @@
-package nostr
+package relays
 
 import (
 	"context"
@@ -9,6 +9,8 @@ import (
 	"sync"
 	"time"
 
+	"github.com/nbd-wtf/go-nostr/core"
+	"github.com/nbd-wtf/go-nostr/utils"
 	"github.com/puzpuzpuz/xsync/v3"
 )
 
@@ -20,17 +22,17 @@ type SimplePool struct {
 	Relays  *xsync.MapOf[string, *Relay]
 	Context context.Context
 
-	authHandler func(*Event) error
+	authHandler func(*core.Event) error
 	cancel      context.CancelFunc
 }
 
 type DirectedFilters struct {
-	Filters
+	core.Filters
 	Relay string
 }
 
 type IncomingEvent struct {
-	*Event
+	*core.Event
 	Relay *Relay
 }
 
@@ -63,7 +65,7 @@ func NewSimplePool(ctx context.Context, opts ...PoolOption) *SimplePool {
 // WithAuthHandler must be a function that signs the auth event when called.
 // it will be called whenever any relay in the pool returns a `CLOSED` message
 // with the "auth-required:" prefix, only once for each relay
-type WithAuthHandler func(authEvent *Event) error
+type WithAuthHandler func(authEvent *core.Event) error
 
 func (_ WithAuthHandler) IsPoolOption() {}
 func (h WithAuthHandler) Apply(pool *SimplePool) {
@@ -73,7 +75,7 @@ func (h WithAuthHandler) Apply(pool *SimplePool) {
 var _ PoolOption = (WithAuthHandler)(nil)
 
 func (pool *SimplePool) EnsureRelay(url string) (*Relay, error) {
-	nm := NormalizeURL(url)
+	nm := utils.NormalizeURL(url)
 	defer namedLock(nm)()
 
 	relay, ok := pool.Relays.Load(nm)
@@ -96,20 +98,20 @@ func (pool *SimplePool) EnsureRelay(url string) (*Relay, error) {
 
 // SubMany opens a subscription with the given filters to multiple relays
 // the subscriptions only end when the context is canceled
-func (pool *SimplePool) SubMany(ctx context.Context, urls []string, filters Filters) chan IncomingEvent {
+func (pool *SimplePool) SubMany(ctx context.Context, urls []string, filters core.Filters) chan IncomingEvent {
 	return pool.subMany(ctx, urls, filters, true)
 }
 
 // SubManyNonUnique is like SubMany, but returns duplicate events if they come from different relays
-func (pool *SimplePool) SubManyNonUnique(ctx context.Context, urls []string, filters Filters) chan IncomingEvent {
+func (pool *SimplePool) SubManyNonUnique(ctx context.Context, urls []string, filters core.Filters) chan IncomingEvent {
 	return pool.subMany(ctx, urls, filters, false)
 }
 
-func (pool *SimplePool) subMany(ctx context.Context, urls []string, filters Filters, unique bool) chan IncomingEvent {
+func (pool *SimplePool) subMany(ctx context.Context, urls []string, filters core.Filters, unique bool) chan IncomingEvent {
 	ctx, cancel := context.WithCancel(ctx)
 	_ = cancel // do this so `go vet` will stop complaining
 	events := make(chan IncomingEvent)
-	seenAlready := xsync.NewMapOf[string, Timestamp]()
+	seenAlready := xsync.NewMapOf[string, core.Timestamp]()
 	ticker := time.NewTicker(seenAlreadyDropTick)
 
 	eose := false
@@ -117,7 +119,7 @@ func (pool *SimplePool) subMany(ctx context.Context, urls []string, filters Filt
 	pending := xsync.NewCounter()
 	pending.Add(int64(len(urls)))
 	for i, url := range urls {
-		url = NormalizeURL(url)
+		url = utils.NormalizeURL(url)
 		urls[i] = url
 		if idx := slices.Index(urls, url); idx != i {
 			// skip duplicate relays in the list
@@ -171,7 +173,7 @@ func (pool *SimplePool) subMany(ctx context.Context, urls []string, filters Filt
 							// this means the connection was closed for weird reasons, like the server shut down
 							// so we will update the filters here to include only events seem from now on
 							// and try to reconnect until we succeed
-							now := Now()
+							now := core.Now()
 							for i := range filters {
 								filters[i].Since = &now
 							}
@@ -188,8 +190,8 @@ func (pool *SimplePool) subMany(ctx context.Context, urls []string, filters Filt
 						}
 					case <-ticker.C:
 						if eose {
-							old := Timestamp(time.Now().Add(-seenAlreadyDropTick).Unix())
-							seenAlready.Range(func(id string, value Timestamp) bool {
+							old := core.Timestamp(time.Now().Add(-seenAlreadyDropTick).Unix())
+							seenAlready.Range(func(id string, value core.Timestamp) bool {
 								if value < old {
 									seenAlready.Delete(id)
 								}
@@ -225,16 +227,16 @@ func (pool *SimplePool) subMany(ctx context.Context, urls []string, filters Filt
 }
 
 // SubManyEose is like SubMany, but it stops subscriptions and closes the channel when gets a EOSE
-func (pool *SimplePool) SubManyEose(ctx context.Context, urls []string, filters Filters) chan IncomingEvent {
+func (pool *SimplePool) SubManyEose(ctx context.Context, urls []string, filters core.Filters) chan IncomingEvent {
 	return pool.subManyEose(ctx, urls, filters, true)
 }
 
 // SubManyEoseNonUnique is like SubManyEose, but returns duplicate events if they come from different relays
-func (pool *SimplePool) SubManyEoseNonUnique(ctx context.Context, urls []string, filters Filters) chan IncomingEvent {
+func (pool *SimplePool) SubManyEoseNonUnique(ctx context.Context, urls []string, filters core.Filters) chan IncomingEvent {
 	return pool.subManyEose(ctx, urls, filters, false)
 }
 
-func (pool *SimplePool) subManyEose(ctx context.Context, urls []string, filters Filters, unique bool) chan IncomingEvent {
+func (pool *SimplePool) subManyEose(ctx context.Context, urls []string, filters core.Filters, unique bool) chan IncomingEvent {
 	ctx, cancel := context.WithCancel(ctx)
 
 	events := make(chan IncomingEvent)
@@ -302,17 +304,17 @@ func (pool *SimplePool) subManyEose(ctx context.Context, urls []string, filters
 					}
 				}
 			}
-		}(NormalizeURL(url))
+		}(utils.NormalizeURL(url))
 	}
 
 	return events
 }
 
 // QuerySingle returns the first event returned by the first relay, cancels everything else.
-func (pool *SimplePool) QuerySingle(ctx context.Context, urls []string, filter Filter) *IncomingEvent {
+func (pool *SimplePool) QuerySingle(ctx context.Context, urls []string, filter core.Filter) *IncomingEvent {
 	ctx, cancel := context.WithCancel(ctx)
 	defer cancel()
-	for ievt := range pool.SubManyEose(ctx, urls, Filters{filter}) {
+	for ievt := range pool.SubManyEose(ctx, urls, core.Filters{filter}) {
 		return &ievt
 	}
 	return nil
@@ -321,7 +323,7 @@ func (pool *SimplePool) QuerySingle(ctx context.Context, urls []string, filter F
 func (pool *SimplePool) batchedSubMany(
 	ctx context.Context,
 	dfs []DirectedFilters,
-	subFn func(context.Context, []string, Filters, bool) chan IncomingEvent,
+	subFn func(context.Context, []string, core.Filters, bool) chan IncomingEvent,
 ) chan IncomingEvent {
 	res := make(chan IncomingEvent)
 

relays/relay.go

@@ -1,4 +1,4 @@
-package nostr
+package relays
 
 import (
 	"bytes"
@@ -13,11 +13,11 @@ import (
 
 	"github.com/gobwas/ws"
 	"github.com/gobwas/ws/wsutil"
+	"github.com/nbd-wtf/go-nostr/core"
+	"github.com/nbd-wtf/go-nostr/utils"
 	"github.com/puzpuzpuz/xsync/v3"
 )
 
-type Status int
-
 var subscriptionIDCounter atomic.Int32
 
 type Relay struct {
@@ -53,7 +53,7 @@ type writeRequest struct {
 func NewRelay(ctx context.Context, url string, opts ...RelayOption) *Relay {
 	ctx, cancel := context.WithCancel(ctx)
 	r := &Relay{
-		URL:                           NormalizeURL(url),
+		URL:                           utils.NormalizeURL(url),
 		connectionContext:             ctx,
 		connectionContextCancel:       cancel,
 		Subscriptions:                 xsync.NewMapOf[string, *Subscription](),
@@ -203,25 +203,25 @@ func (r *Relay) ConnectWithTLS(ctx context.Context, tlsConfig *tls.Config) error
 
 			message := buf.Bytes()
 			debugLogf("{%s} %v\n", r.URL, message)
-			envelope := ParseMessage(message)
+			envelope := core.ParseMessage(message)
 			if envelope == nil {
 				continue
 			}
 
 			switch env := envelope.(type) {
-			case *NoticeEnvelope:
+			case *core.NoticeEnvelope:
 				// see WithNoticeHandler
 				if r.notices != nil {
 					r.notices <- string(*env)
 				} else {
 					log.Printf("NOTICE from %s: '%s'\n", r.URL, string(*env))
 				}
-			case *AuthEnvelope:
+			case *core.AuthEnvelope:
 				if env.Challenge == nil {
 					continue
 				}
 				r.challenge = *env.Challenge
-			case *EventEnvelope:
+			case *core.EventEnvelope:
 				if env.SubscriptionID == nil {
 					continue
 				}
@@ -237,12 +237,8 @@ func (r *Relay) ConnectWithTLS(ctx context.Context, tlsConfig *tls.Config) error
 
 					// check signature, ignore invalid, except from trusted (AssumeValid) relays
 					if !r.AssumeValid {
-						if ok, err := env.Event.CheckSignature(); !ok {
-							errmsg := ""
-							if err != nil {
-								errmsg = err.Error()
-							}
-							InfoLogger.Printf("{%s} bad signature on %s; %s\n", r.URL, env.Event.ID, errmsg)
+						if ok := checkSigOnRelay(env.Event); !ok {
+							InfoLogger.Printf("{%s} bad signature on %s\n", r.URL, env.Event.ID)
 							continue
 						}
 					}
@@ -250,19 +246,19 @@ func (r *Relay) ConnectWithTLS(ctx context.Context, tlsConfig *tls.Config) error
 					// dispatch this to the internal .events channel of the subscription
 					subscription.dispatchEvent(&env.Event)
 				}
-			case *EOSEEnvelope:
+			case *core.EOSEEnvelope:
 				if subscription, ok := r.Subscriptions.Load(string(*env)); ok {
 					subscription.dispatchEose()
 				}
-			case *ClosedEnvelope:
+			case *core.ClosedEnvelope:
 				if subscription, ok := r.Subscriptions.Load(string(env.SubscriptionID)); ok {
 					subscription.dispatchClosed(env.Reason)
 				}
-			case *CountEnvelope:
+			case *core.CountEnvelope:
 				if subscription, ok := r.Subscriptions.Load(string(env.SubscriptionID)); ok && env.Count != nil && subscription.countResult != nil {
 					subscription.countResult <- *env.Count
 				}
-			case *OKEnvelope:
+			case *core.OKEnvelope:
 				if okCallback, exist := r.okCallbacks.Load(env.EventID); exist {
 					okCallback(env.OK, env.Reason)
 				} else {
@@ -287,18 +283,18 @@ func (r *Relay) Write(msg []byte) <-chan error {
 }
 
 // Publish sends an "EVENT" command to the relay r as in NIP-01 and waits for an OK response.
-func (r *Relay) Publish(ctx context.Context, event Event) error {
-	return r.publish(ctx, event.ID, &EventEnvelope{Event: event})
+func (r *Relay) Publish(ctx context.Context, event core.Event) error {
+	return r.publish(ctx, event.ID, &core.EventEnvelope{Event: event})
 }
 
 // Auth sends an "AUTH" command client->relay as in NIP-42 and waits for an OK response.
-func (r *Relay) Auth(ctx context.Context, sign func(event *Event) error) error {
-	authEvent := Event{
-		CreatedAt: Now(),
-		Kind:      KindClientAuthentication,
-		Tags: Tags{
-			Tag{"relay", r.URL},
-			Tag{"challenge", r.challenge},
+func (r *Relay) Auth(ctx context.Context, sign func(event *core.Event) error) error {
+	authEvent := core.Event{
+		CreatedAt: core.Now(),
+		Kind:      core.KindClientAuthentication,
+		Tags: core.Tags{
+			{"relay", r.URL},
+			{"challenge", r.challenge},
 		},
 		Content: "",
 	}
@@ -306,11 +302,11 @@ func (r *Relay) Auth(ctx context.Context, sign func(event *Event) error) error {
 		return fmt.Errorf("error signing auth event: %w", err)
 	}
 
-	return r.publish(ctx, authEvent.ID, &AuthEnvelope{Event: authEvent})
+	return r.publish(ctx, authEvent.ID, &core.AuthEnvelope{Event: authEvent})
 }
 
 // publish can be used both for EVENT and for AUTH
-func (r *Relay) publish(ctx context.Context, id string, env Envelope) error {
+func (r *Relay) publish(ctx context.Context, id string, env core.Envelope) error {
 	var err error
 	var cancel context.CancelFunc
 
@@ -363,7 +359,7 @@ func (r *Relay) publish(ctx context.Context, id string, env Envelope) error {
 //
 // Remember to cancel subscriptions, either by calling `.Unsub()` on them or ensuring their `context.Context` will be canceled at some point.
 // Failure to do that will result in a huge number of halted goroutines being created.
-func (r *Relay) Subscribe(ctx context.Context, filters Filters, opts ...SubscriptionOption) (*Subscription, error) {
+func (r *Relay) Subscribe(ctx context.Context, filters core.Filters, opts ...SubscriptionOption) (*Subscription, error) {
 	sub := r.PrepareSubscription(ctx, filters, opts...)
 
 	if err := sub.Fire(); err != nil {
@@ -377,7 +373,7 @@ func (r *Relay) Subscribe(ctx context.Context, filters Filters, opts ...Subscrip
 //
 // Remember to cancel subscriptions, either by calling `.Unsub()` on them or ensuring their `context.Context` will be canceled at some point.
 // Failure to do that will result in a huge number of halted goroutines being created.
-func (r *Relay) PrepareSubscription(ctx context.Context, filters Filters, opts ...SubscriptionOption) *Subscription {
+func (r *Relay) PrepareSubscription(ctx context.Context, filters core.Filters, opts ...SubscriptionOption) *Subscription {
 	if r.Connection == nil {
 		panic(fmt.Errorf("must call .Connect() first before calling .Subscribe()"))
 	}
@@ -390,7 +386,7 @@ func (r *Relay) PrepareSubscription(ctx context.Context, filters Filters, opts .
 		Context:           ctx,
 		cancel:            cancel,
 		counter:           int(current),
-		Events:            make(chan *Event),
+		Events:            make(chan *core.Event),
 		EndOfStoredEvents: make(chan struct{}, 1),
 		ClosedReason:      make(chan string, 1),
 		Filters:           filters,
@@ -412,8 +408,8 @@ func (r *Relay) PrepareSubscription(ctx context.Context, filters Filters, opts .
 	return sub
 }
 
-func (r *Relay) QuerySync(ctx context.Context, filter Filter, opts ...SubscriptionOption) ([]*Event, error) {
-	sub, err := r.Subscribe(ctx, Filters{filter}, opts...)
+func (r *Relay) QuerySync(ctx context.Context, filter core.Filter, opts ...SubscriptionOption) ([]*core.Event, error) {
+	sub, err := r.Subscribe(ctx, core.Filters{filter}, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -427,7 +423,7 @@ func (r *Relay) QuerySync(ctx context.Context, filter Filter, opts ...Subscripti
 		defer cancel()
 	}
 
-	var events []*Event
+	var events []*core.Event
 	for {
 		select {
 		case evt := <-sub.Events:
@@ -444,7 +440,7 @@ func (r *Relay) QuerySync(ctx context.Context, filter Filter, opts ...Subscripti
 	}
 }
 
-func (r *Relay) Count(ctx context.Context, filters Filters, opts ...SubscriptionOption) (int64, error) {
+func (r *Relay) Count(ctx context.Context, filters core.Filters, opts ...SubscriptionOption) (int64, error) {
 	sub := r.PrepareSubscription(ctx, filters, opts...)
 	sub.countResult = make(chan int64)
 

relays/relay_checksig.go

@@ -0,0 +1,10 @@
+//go:build !libsecp256k1
+
+package relays
+
+import "github.com/nbd-wtf/go-nostr/core"
+
+func checkSigOnRelay(evt core.Event) bool {
+	ok, _ := evt.CheckSignature()
+	return ok
+}

relays/relay_checksig_libsecp256k1.go

@@ -0,0 +1,13 @@
+//go:build libsecp256k1
+
+package relays
+
+import (
+	"github.com/nbd-wtf/go-nostr/core"
+	"github.com/nbd-wtf/go-nostr/libsecp256k1"
+)
+
+func checkSigOnRelay(evt core.Event) bool {
+	ok, _ := libsecp256k1.CheckSignature(evt)
+	return ok
+}

relays/relay_test.go

@@ -1,4 +1,4 @@
-package nostr
+package relays
 
 import (
 	"bytes"
@@ -12,17 +12,19 @@ import (
 	"testing"
 	"time"
 
+	"github.com/nbd-wtf/go-nostr/core"
+	"github.com/nbd-wtf/go-nostr/utils"
 	"golang.org/x/net/websocket"
 )
 
 func TestPublish(t *testing.T) {
 	// test note to be sent over websocket
 	priv, pub := makeKeyPair(t)
-	textNote := Event{
-		Kind:      KindTextNote,
+	textNote := core.Event{
+		Kind:      core.KindTextNote,
 		Content:   "hello",
-		CreatedAt: Timestamp(1672068534), // random fixed timestamp
-		Tags:      Tags{[]string{"foo", "bar"}},
+		CreatedAt: core.Timestamp(1672068534), // random fixed timestamp
+		Tags:      core.Tags{[]string{"foo", "bar"}},
 		PubKey:    pub,
 	}
 	if err := textNote.Sign(priv); err != nil {
@@ -66,7 +68,7 @@ func TestPublish(t *testing.T) {
 
 func TestPublishBlocked(t *testing.T) {
 	// test note to be sent over websocket
-	textNote := Event{Kind: KindTextNote, Content: "hello"}
+	textNote := core.Event{Kind: core.KindTextNote, Content: "hello"}
 	textNote.ID = textNote.GetID()
 
 	// fake relay server
@@ -92,7 +94,7 @@ func TestPublishBlocked(t *testing.T) {
 
 func TestPublishWriteFailed(t *testing.T) {
 	// test note to be sent over websocket
-	textNote := Event{Kind: KindTextNote, Content: "hello"}
+	textNote := core.Event{Kind: core.KindTextNote, Content: "hello"}
 	textNote.ID = textNote.GetID()
 
 	// fake relay server
@@ -161,7 +163,7 @@ func TestConnectWithOrigin(t *testing.T) {
 	defer ws.Close()
 
 	// relay client
-	r := NewRelay(context.Background(), NormalizeURL(ws.URL))
+	r := NewRelay(context.Background(), utils.NormalizeURL(ws.URL))
 	r.RequestHeader = http.Header{"origin": {"https://example.com"}}
 	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
 	defer cancel()
@@ -191,8 +193,8 @@ var anyOriginHandshake = func(conf *websocket.Config, r *http.Request) error {
 
 func makeKeyPair(t *testing.T) (priv, pub string) {
 	t.Helper()
-	privkey := GeneratePrivateKey()
-	pubkey, err := GetPublicKey(privkey)
+	privkey := core.GeneratePrivateKey()
+	pubkey, err := core.GetPublicKey(privkey)
 	if err != nil {
 		t.Fatalf("GetPublicKey(%q): %v", privkey, err)
 	}
@@ -207,7 +209,7 @@ func mustRelayConnect(url string) *Relay {
 	return rl
 }
 
-func parseEventMessage(t *testing.T, raw []json.RawMessage) Event {
+func parseEventMessage(t *testing.T, raw []json.RawMessage) core.Event {
 	t.Helper()
 	if len(raw) < 2 {
 		t.Fatalf("len(raw) = %d; want at least 2", len(raw))
@@ -217,14 +219,14 @@ func parseEventMessage(t *testing.T, raw []json.RawMessage) Event {
 	if typ != "EVENT" {
 		t.Errorf("typ = %q; want EVENT", typ)
 	}
-	var event Event
+	var event core.Event
 	if err := json.Unmarshal(raw[1], &event); err != nil {
 		t.Errorf("json.Unmarshal(`%s`): %v", string(raw[1]), err)
 	}
 	return event
 }
 
-func parseSubscriptionMessage(t *testing.T, raw []json.RawMessage) (subid string, filters []Filter) {
+func parseSubscriptionMessage(t *testing.T, raw []json.RawMessage) (subid string, filters []core.Filter) {
 	t.Helper()
 	if len(raw) < 3 {
 		t.Fatalf("len(raw) = %d; want at least 3", len(raw))
@@ -238,9 +240,9 @@ func parseSubscriptionMessage(t *testing.T, raw []json.RawMessage) (subid string
 	if err := json.Unmarshal(raw[1], &id); err != nil {
 		t.Errorf("json.Unmarshal sub id: %v", err)
 	}
-	var ff []Filter
+	var ff []core.Filter
 	for i, b := range raw[2:] {
-		var f Filter
+		var f core.Filter
 		if err := json.Unmarshal(b, &f); err != nil {
 			t.Errorf("json.Unmarshal filter %d: %v", i, err)
 		}

relays/subscription.go

@@ -1,4 +1,4 @@
-package nostr
+package relays
 
 import (
 	"context"
@@ -6,6 +6,8 @@ import (
 	"strconv"
 	"sync"
 	"sync/atomic"
+
+	"github.com/nbd-wtf/go-nostr/core"
 )
 
 type Subscription struct {
@@ -13,14 +15,14 @@ type Subscription struct {
 	counter int
 
 	Relay   *Relay
-	Filters Filters
+	Filters core.Filters
 
 	// for this to be treated as a COUNT and not a REQ this must be set
 	countResult chan int64
 
 	// the Events channel emits all EVENTs that come in a Subscription
 	// will be closed when the subscription ends
-	Events chan *Event
+	Events chan *core.Event
 	mu     sync.Mutex
 
 	// the EndOfStoredEvents channel gets closed when an EOSE comes for that subscription
@@ -43,7 +45,7 @@ type Subscription struct {
 }
 
 type EventMessage struct {
-	Event Event
+	Event core.Event
 	Relay string
 }
 
@@ -78,7 +80,7 @@ func (sub *Subscription) start() {
 	sub.mu.Unlock()
 }
 
-func (sub *Subscription) dispatchEvent(evt *Event) {
+func (sub *Subscription) dispatchEvent(evt *core.Event) {
 	added := false
 	if !sub.eosed.Load() {
 		sub.storedwg.Add(1)
@@ -138,7 +140,7 @@ func (sub *Subscription) Unsub() {
 func (sub *Subscription) Close() {
 	if sub.Relay.IsConnected() {
 		id := sub.GetID()
-		closeMsg := CloseEnvelope(id)
+		closeMsg := core.CloseEnvelope(id)
 		closeb, _ := (&closeMsg).MarshalJSON()
 		debugLogf("{%s} sending %v", sub.Relay.URL, closeb)
 		<-sub.Relay.Write(closeb)
@@ -147,7 +149,7 @@ func (sub *Subscription) Close() {
 
 // Sub sets sub.Filters and then calls sub.Fire(ctx).
 // The subscription will be closed if the context expires.
-func (sub *Subscription) Sub(_ context.Context, filters Filters) {
+func (sub *Subscription) Sub(_ context.Context, filters core.Filters) {
 	sub.Filters = filters
 	sub.Fire()
 }
@@ -158,9 +160,9 @@ func (sub *Subscription) Fire() error {
 
 	var reqb []byte
 	if sub.countResult == nil {
-		reqb, _ = ReqEnvelope{id, sub.Filters}.MarshalJSON()
+		reqb, _ = core.ReqEnvelope{SubscriptionID: id, Filters: sub.Filters}.MarshalJSON()
 	} else {
-		reqb, _ = CountEnvelope{id, sub.Filters, nil}.MarshalJSON()
+		reqb, _ = core.CountEnvelope{SubscriptionID: id, Filters: sub.Filters, Count: nil}.MarshalJSON()
 	}
 	debugLogf("{%s} sending %v", sub.Relay.URL, reqb)
 

relays/subscription_test.go

@@ -1,4 +1,4 @@
-package nostr
+package relays
 
 import (
 	"context"
@@ -6,6 +6,8 @@ import (
 	"sync/atomic"
 	"testing"
 	"time"
+
+	"github.com/nbd-wtf/go-nostr/core"
 )
 
 const RELAY = "wss://nos.lol"
@@ -14,8 +16,7 @@ const RELAY = "wss://nos.lol"
 func TestSubscribeBasic(t *testing.T) {
 	rl := mustRelayConnect(RELAY)
 	defer rl.Close()
-
-	sub, err := rl.Subscribe(context.Background(), Filters{{Kinds: []int{KindTextNote}, Limit: 2}})
+	sub, err := rl.Subscribe(context.Background(), core.Filters{{Kinds: []int{core.KindTextNote}, Limit: 2}})
 	if err != nil {
 		t.Fatalf("subscription failed: %v", err)
 		return
@@ -56,7 +57,7 @@ func TestNestedSubscriptions(t *testing.T) {
 	n := atomic.Uint32{}
 
 	// fetch 2 replies to a note
-	sub, err := rl.Subscribe(context.Background(), Filters{{Kinds: []int{KindTextNote}, Tags: TagMap{"e": []string{"0e34a74f8547e3b95d52a2543719b109fd0312aba144e2ef95cba043f42fe8c5"}}, Limit: 3}})
+	sub, err := rl.Subscribe(context.Background(), core.Filters{{Kinds: []int{core.KindTextNote}, Tags: core.TagMap{"e": []string{"0e34a74f8547e3b95d52a2543719b109fd0312aba144e2ef95cba043f42fe8c5"}}, Limit: 3}})
 	if err != nil {
 		t.Fatalf("subscription 1 failed: %v", err)
 		return
@@ -66,7 +67,7 @@ func TestNestedSubscriptions(t *testing.T) {
 		select {
 		case event := <-sub.Events:
 			// now fetch author of this
-			sub, err := rl.Subscribe(context.Background(), Filters{{Kinds: []int{KindProfileMetadata}, Authors: []string{event.PubKey}, Limit: 1}})
+			sub, err := rl.Subscribe(context.Background(), core.Filters{{Kinds: []int{core.KindProfileMetadata}, Authors: []string{event.PubKey}, Limit: 1}})
 			if err != nil {
 				t.Fatalf("subscription 2 failed: %v", err)
 				return
@@ -76,7 +77,7 @@ func TestNestedSubscriptions(t *testing.T) {
 				select {
 				case <-sub.Events:
 					// do another subscription here in "sync" mode, just so we're sure things are not blocking
-					rl.QuerySync(context.Background(), Filter{Limit: 1})
+					rl.QuerySync(context.Background(), core.Filter{Limit: 1})
 
 					n.Add(1)
 					if n.Load() == 3 {
@@ -90,7 +91,7 @@ func TestNestedSubscriptions(t *testing.T) {
 				}
 			}
 		end:
-			fmt.Println("")
+			fmt.Print("")
 		case <-sub.EndOfStoredEvents:
 			sub.Unsub()
 			return

utils/normalize.go

@@ -1,4 +1,4 @@
-package nostr
+package utils
 
 import (
 	"net/url"

utils/normalize_test.go

@@ -1,4 +1,4 @@
-package nostr
+package utils
 
 import "fmt"
 

utils/utils.go

@@ -1,4 +1,4 @@
-package nostr
+package utils
 
 import (
 	"encoding/hex"