improve/refactor websocket connections hoping this will fix the undetected disconnections we're seeing.

this commit also remove all the sonic envelope parsing and reintroduces filters in REQ as a slice instead of as a singleton. why? well, the sonic stuff wasn't really that fast, it was a little bit but only got fast enough once I introduced unsafe conversions between []byte and string and did weird unsafe reuse of []byte in order to save the values of tags, which would definitely cause issues in the future if the caller wasn't aware of it (and even if they were, like myself). and the filters stuff is because we abandoned the idea of changing NIP-01 to only accept one filter per REQ.
2025-07-10 22:50:49 -03:00
parent 9dc89517ee
commit 7289da9c72
15 changed files with 278 additions and 986 deletions
--- a/connection.go
+++ b/connection.go
@@ -1,12 +1,13 @@
 package nostr

 import (
+	"bytes"
 	"context"
 	"crypto/tls"
 	"errors"
-	"fmt"
 	"io"
 	"net/http"
+	"sync/atomic"
 	"time"

 	ws "github.com/coder/websocket"
@@ -14,52 +15,112 @@ import (

 // Connection represents a websocket connection to a Nostr relay.
 type Connection struct {
-	conn *ws.Conn
+	conn         *ws.Conn
+	writeQueue   chan writeRequest
+	closed       *atomic.Bool
+	closedNotify chan struct{}
+}
+
+type writeRequest struct {
+	msg    []byte
+	answer chan error
 }

 // NewConnection creates a new websocket connection to a Nostr relay.
-func NewConnection(ctx context.Context, url string, requestHeader http.Header, tlsConfig *tls.Config) (*Connection, error) {
+func NewConnection(
+	ctx context.Context,
+	url string,
+	handleMessage func(string),
+	requestHeader http.Header,
+	tlsConfig *tls.Config,
+) (*Connection, error) {
 	c, _, err := ws.Dial(ctx, url, getConnectionOptions(requestHeader, tlsConfig))
 	if err != nil {
 		return nil, err
 	}
-
 	c.SetReadLimit(2 << 24) // 33MB

-	return &Connection{
-		conn: c,
-	}, nil
-}
+	// this will tell if the connection is closed

-// WriteMessage writes arbitrary bytes to the websocket connection.
-func (c *Connection) WriteMessage(ctx context.Context, data []byte) error {
-	if err := c.conn.Write(ctx, ws.MessageText, data); err != nil {
-		return fmt.Errorf("failed to write message: %w", err)
+	// ping every 29 seconds
+	ticker := time.NewTicker(29 * time.Second)
+
+	// main websocket loop
+	writeQueue := make(chan writeRequest)
+	readQueue := make(chan string)
+
+	conn := &Connection{
+		conn:         c,
+		writeQueue:   writeQueue,
+		closed:       &atomic.Bool{},
+		closedNotify: make(chan struct{}),
 	}

-	return nil
+	go func() {
+		for {
+			select {
+			case <-ctx.Done():
+				conn.doClose(ws.StatusNormalClosure, "")
+				return
+			case <-ticker.C:
+				ctx, cancel := context.WithTimeoutCause(ctx, time.Millisecond*800, errors.New("ping took too long"))
+				err := c.Ping(ctx)
+				cancel()
+				if err != nil {
+					conn.doClose(ws.StatusAbnormalClosure, "ping took too long")
+					return
+				}
+			case wr := <-writeQueue:
+				debugLogf("{%s} sending %v\n", url, string(wr.msg))
+				ctx, cancel := context.WithTimeoutCause(ctx, time.Second*10, errors.New("write took too long"))
+				err := c.Write(ctx, ws.MessageText, wr.msg)
+				cancel()
+				if err != nil {
+					conn.doClose(ws.StatusAbnormalClosure, "write took too long")
+					if wr.answer != nil {
+						wr.answer <- err
+					}
+					return
+				}
+				if wr.answer != nil {
+					close(wr.answer)
+				}
+			case msg := <-readQueue:
+				debugLogf("{%s} received %v\n", url, msg)
+				handleMessage(msg)
+			}
+		}
+	}()
+
+	// read loop -- loops back to the main loop
+	go func() {
+		buf := new(bytes.Buffer)
+
+		for {
+			buf.Reset()
+
+			_, reader, err := c.Reader(ctx)
+			if err != nil {
+				conn.doClose(ws.StatusAbnormalClosure, "failed to get reader")
+				return
+			}
+			if _, err := io.Copy(buf, reader); err != nil {
+				conn.doClose(ws.StatusAbnormalClosure, "failed to read")
+				return
+			}
+
+			readQueue <- string(buf.Bytes())
+		}
+	}()
+
+	return conn, nil
 }

-// ReadMessage reads arbitrary bytes from the websocket connection into the provided buffer.
-func (c *Connection) ReadMessage(ctx context.Context, buf io.Writer) error {
-	_, reader, err := c.conn.Reader(ctx)
-	if err != nil {
-		return fmt.Errorf("conn reader: %w", err)
+func (c *Connection) doClose(code ws.StatusCode, reason string) {
+	wasClosed := c.closed.Swap(true)
+	if !wasClosed {
+		c.conn.Close(code, reason)
+		close(c.closedNotify)
+		close(c.writeQueue)
 	}
-	if _, err := io.Copy(buf, reader); err != nil {
-		return fmt.Errorf("failed to read message: %w", err)
-	}
-	return nil
-}
-
-// Close closes the websocket connection.
-func (c *Connection) Close() error {
-	return c.conn.Close(ws.StatusNormalClosure, "")
-}
-
-// Ping sends a ping message to the websocket connection.
-func (c *Connection) Ping(ctx context.Context) error {
-	ctx, cancel := context.WithTimeoutCause(ctx, time.Millisecond*800, errors.New("ping took too long"))
-	defer cancel()
-	return c.conn.Ping(ctx)
 }
--- a/count_test.go
+++ b/count_test.go
@@ -8,7 +8,7 @@ import (
 )

 func TestCount(t *testing.T) {
-	const RELAY = "wss://chorus.mikedilger.com:444"
+	const RELAY = "wss://chorus.pjv.me"

 	rl := mustRelayConnect(t, RELAY)
 	defer rl.Close()
--- a/envelopes.go
+++ b/envelopes.go
@@ -13,22 +13,19 @@ import (
 	"github.com/tidwall/gjson"
 )

-var UnknownLabel = errors.New("unknown envelope label")
+var (
+	UnknownLabel        = errors.New("unknown envelope label")
+	InvalidJsonEnvelope = errors.New("invalid json envelope")
+)

-type MessageParser interface {
-	// ParseMessage parses a message into an Envelope.
-	ParseMessage(string) (Envelope, error)
-}
-
-// Deprecated: use NewMessageParser instead
-func ParseMessage(message string) Envelope {
+func ParseMessage(message string) (Envelope, error) {
 	firstQuote := strings.IndexByte(message, '"')
 	if firstQuote == -1 {
-		return nil
+		return nil, InvalidJsonEnvelope
 	}
 	secondQuote := strings.IndexByte(message[firstQuote+1:], '"')
 	if secondQuote == -1 {
-		return nil
+		return nil, InvalidJsonEnvelope
 	}
 	label := message[firstQuote+1 : firstQuote+1+secondQuote]

@@ -56,14 +53,14 @@ func ParseMessage(message string) Envelope {
 		x := CloseEnvelope("")
 		v = &x
 	default:
-		return nil
+		return nil, UnknownLabel
 	}

 	if err := v.FromJSON(message); err != nil {
-		return nil
+		return nil, err
 	}

-	return v
+	return v, nil
 }

 // Envelope is the interface for all nostr message envelopes.
@@ -124,10 +121,14 @@ func (v EventEnvelope) MarshalJSON() ([]byte, error) {
 // ReqEnvelope represents a REQ message.
 type ReqEnvelope struct {
 	SubscriptionID string
-	Filter
+	Filters        []Filter
 }

 func (_ ReqEnvelope) Label() string { return "REQ" }
+func (c ReqEnvelope) String() string {
+	v, _ := json.Marshal(c)
+	return string(v)
+}

 func (v *ReqEnvelope) FromJSON(data string) error {
 	r := gjson.Parse(data)
@@ -136,8 +137,12 @@ func (v *ReqEnvelope) FromJSON(data string) error {
 		return fmt.Errorf("failed to decode REQ envelope: missing filters")
 	}
 	v.SubscriptionID = string(unsafe.Slice(unsafe.StringData(arr[1].Str), len(arr[1].Str)))
-	if err := easyjson.Unmarshal(unsafe.Slice(unsafe.StringData(arr[2].Raw), len(arr[2].Raw)), &v.Filter); err != nil {
-		return fmt.Errorf("on filter: %w", err)
+
+	v.Filters = make([]Filter, len(arr)-2)
+	for i, filterj := range arr[2:] {
+		if err := easyjson.Unmarshal(unsafe.Slice(unsafe.StringData(filterj.Raw), len(filterj.Raw)), &v.Filters[i]); err != nil {
+			return fmt.Errorf("on filter: %w", err)
+		}
 	}

 	return nil
@@ -148,7 +153,7 @@ func (v ReqEnvelope) MarshalJSON() ([]byte, error) {
 	w.RawString(`["REQ","`)
 	w.RawString(v.SubscriptionID)
 	w.RawString(`",`)
-	v.Filter.MarshalEasyJSON(&w)
+	v.Filters[0].MarshalEasyJSON(&w)
 	w.RawString(`]`)
 	return w.BuildBytes()
 }
--- a/envelopes_benchmark_test.go
+++ b/envelopes_benchmark_test.go
@@ -1,5 +1,3 @@
-//go:build sonic
-
 package nostr

 import (
@@ -28,16 +26,7 @@ func BenchmarkParseMessage(b *testing.B) {
 			b.Run("easyjson", func(b *testing.B) {
 				for b.Loop() {
 					for _, msg := range messages {
-						_ = ParseMessage(msg)
-					}
-				}
-			})
-
-			b.Run("sonic", func(b *testing.B) {
-				smp := NewSonicMessageParser()
-				for b.Loop() {
-					for _, msg := range messages {
-						_, _ = smp.ParseMessage(msg)
+						_, _ = ParseMessage(msg)
 					}
 				}
 			})
@@ -103,14 +92,13 @@ func generateRandomEvent() Event {
 	}

 	event := Event{
-		ID:        generateRandomHex(64),
-		PubKey:    generateRandomHex(64),
 		CreatedAt: Timestamp(time.Now().Unix() - int64(rand.IntN(10000000))),
-		Kind:      rand.IntN(10000),
+		Kind:      Kind(rand.IntN(10000)),
 		Tags:      tags,
 		Content:   string(content),
-		Sig:       generateRandomHex(128),
 	}
+	event.ID, _ = IDFromHex(generateRandomHex(64))
+	event.PubKey, _ = PubKeyFromHexCheap(generateRandomHex(64))

 	return event
 }
@@ -198,25 +186,25 @@ func generateRandomFilter() Filter {

 	if rand.IntN(2) == 0 {
 		count := rand.IntN(5) + 1
-		filter.IDs = make([]string, count)
+		filter.IDs = make([]ID, count)
 		for i := range filter.IDs {
-			filter.IDs[i] = generateRandomHex(64)
+			filter.IDs[i], _ = IDFromHex(generateRandomHex(64))
 		}
 	}

 	if rand.IntN(2) == 0 {
 		count := rand.IntN(5) + 1
-		filter.Kinds = make([]int, count)
+		filter.Kinds = make([]Kind, count)
 		for i := range filter.Kinds {
-			filter.Kinds[i] = rand.IntN(10000)
+			filter.Kinds[i] = Kind(rand.IntN(10000))
 		}
 	}

 	if rand.IntN(2) == 0 {
 		count := rand.IntN(5) + 1
-		filter.Authors = make([]string, count)
+		filter.Authors = make([]PubKey, count)
 		for i := range filter.Authors {
-			filter.Authors[i] = generateRandomHex(64)
+			filter.Authors[i], _ = PubKeyFromHexCheap(generateRandomHex(64))
 		}
 	}

@@ -238,13 +226,11 @@ func generateRandomFilter() Filter {
 	}

 	if rand.IntN(2) == 0 {
-		ts := Timestamp(time.Now().Unix() - int64(rand.IntN(10000000)))
-		filter.Since = &ts
+		filter.Since = Timestamp(time.Now().Unix() - int64(rand.IntN(10000000)))
 	}

 	if rand.IntN(2) == 0 {
-		ts := Timestamp(time.Now().Unix() - int64(rand.IntN(1000000)))
-		filter.Until = &ts
+		filter.Until = Timestamp(time.Now().Unix() - int64(rand.IntN(1000000)))
 	}

 	if rand.IntN(2) == 0 {
--- a/envelopes_default.go
+++ b/envelopes_default.go
@@ -1,58 +0,0 @@
-//go:build !sonic
-
-package nostr
-
-import (
-	"errors"
-	"strings"
-)
-
-func NewMessageParser() MessageParser {
-	return messageParser{}
-}
-
-type messageParser struct{}
-
-func (messageParser) ParseMessage(message string) (Envelope, error) {
-	firstQuote := strings.IndexByte(message, '"')
-	if firstQuote == -1 {
-		return nil, errors.New("malformed json")
-	}
-	secondQuote := strings.IndexByte(message[firstQuote+1:], '"')
-	if secondQuote == -1 {
-		return nil, errors.New("malformed json")
-	}
-	label := message[firstQuote+1 : firstQuote+1+secondQuote]
-
-	var v Envelope
-	switch label {
-	case "EVENT":
-		v = &EventEnvelope{}
-	case "REQ":
-		v = &ReqEnvelope{}
-	case "COUNT":
-		v = &CountEnvelope{}
-	case "NOTICE":
-		x := NoticeEnvelope("")
-		v = &x
-	case "EOSE":
-		x := EOSEEnvelope("")
-		v = &x
-	case "OK":
-		v = &OKEnvelope{}
-	case "AUTH":
-		v = &AuthEnvelope{}
-	case "CLOSED":
-		v = &ClosedEnvelope{}
-	case "CLOSE":
-		x := CloseEnvelope("")
-		v = &x
-	default:
-		return nil, UnknownLabel
-	}
-
-	if err := v.FromJSON(message); err != nil {
-		return nil, err
-	}
-	return v, nil
-}
--- a/envelopes_sonic.go
+++ b/envelopes_sonic.go
@@ -1,566 +0,0 @@
-//go:build sonic
-
-package nostr
-
-import (
-	"encoding/hex"
-	stdlibjson "encoding/json"
-	"fmt"
-	"unsafe"
-
-	"github.com/bytedance/sonic/ast"
-)
-
-type sonicVisitorPosition int
-
-const (
-	inEnvelope sonicVisitorPosition = iota
-
-	inEvent
-	inReq
-	inOk
-	inEose
-	inCount
-	inAuth
-	inClose
-	inClosed
-	inNotice
-
-	inFilterObject
-	inEventObject
-	inCountObject
-
-	inSince
-	inLimit
-	inUntil
-	inIds
-	inAuthors
-	inKinds
-	inSearch
-	inAFilterTag
-
-	inId
-	inCreatedAt
-	inKind
-	inContent
-	inPubkey
-	inSig
-	inTags       // we just saw the "tags" object key
-	inTagsList   // we have just seen the first `[` of the tags
-	inAnEventTag // we are inside an actual tag, i.e we have just seen `[[`, or `].[`
-)
-
-func (spp sonicVisitorPosition) String() string {
-	switch spp {
-	case inEnvelope:
-		return "inEnvelope"
-	case inEvent:
-		return "inEvent"
-	case inReq:
-		return "inReq"
-	case inOk:
-		return "inOk"
-	case inEose:
-		return "inEose"
-	case inCount:
-		return "inCount"
-	case inAuth:
-		return "inAuth"
-	case inClose:
-		return "inClose"
-	case inClosed:
-		return "inClosed"
-	case inNotice:
-		return "inNotice"
-	case inFilterObject:
-		return "inFilterObject"
-	case inEventObject:
-		return "inEventObject"
-	case inCountObject:
-		return "inCountObject"
-	case inSince:
-		return "inSince"
-	case inLimit:
-		return "inLimit"
-	case inUntil:
-		return "inUntil"
-	case inIds:
-		return "inIds"
-	case inAuthors:
-		return "inAuthors"
-	case inKinds:
-		return "inKinds"
-	case inAFilterTag:
-		return "inAFilterTag"
-	case inId:
-		return "inId"
-	case inCreatedAt:
-		return "inCreatedAt"
-	case inKind:
-		return "inKind"
-	case inContent:
-		return "inContent"
-	case inPubkey:
-		return "inPubkey"
-	case inSig:
-		return "inSig"
-	case inTags:
-		return "inTags"
-	case inTagsList:
-		return "inTagsList"
-	case inAnEventTag:
-		return "inAnEventTag"
-	default:
-		return "<unexpected-spp>"
-	}
-}
-
-type sonicVisitor struct {
-	event  *EventEnvelope
-	req    *ReqEnvelope
-	ok     *OKEnvelope
-	eose   *EOSEEnvelope
-	count  *CountEnvelope
-	auth   *AuthEnvelope
-	close  *CloseEnvelope
-	closed *ClosedEnvelope
-	notice *NoticeEnvelope
-
-	whereWeAre sonicVisitorPosition
-
-	currentEvent    *Event
-	currentEventTag Tag
-
-	currentFilter        *Filter
-	currentFilterTagList []string
-	currentFilterTagName string
-
-	smp          *sonicMessageParser
-	mainEnvelope Envelope
-}
-
-func (sv *sonicVisitor) OnArrayBegin(capacity int) error {
-	// fmt.Println("***", "OnArrayBegin", "==", sv.whereWeAre)
-
-	switch sv.whereWeAre {
-	case inTags:
-		sv.whereWeAre = inTagsList
-		sv.currentEvent.Tags = sv.smp.reusableTagArray
-	case inTagsList:
-		sv.whereWeAre = inAnEventTag
-		sv.currentEventTag = sv.smp.reusableStringArray
-	case inAFilterTag:
-		// we have already created this
-	}
-
-	return nil
-}
-
-func (sv *sonicVisitor) OnArrayEnd() error {
-	// fmt.Println("***", "OnArrayEnd", "==", sv.whereWeAre)
-
-	switch sv.whereWeAre {
-	// envelopes
-	case inEvent:
-		sv.mainEnvelope = sv.event
-	case inReq:
-		sv.mainEnvelope = sv.req
-	case inOk:
-		sv.mainEnvelope = sv.ok
-	case inEose:
-		sv.mainEnvelope = sv.eose
-	case inCount:
-		sv.mainEnvelope = sv.count
-	case inAuth:
-		sv.mainEnvelope = sv.auth
-	case inClose:
-		sv.mainEnvelope = sv.close
-	case inClosed:
-		sv.mainEnvelope = sv.closed
-	case inNotice:
-		sv.mainEnvelope = sv.notice
-
-		// filter object properties
-	case inIds:
-		sv.whereWeAre = inFilterObject
-		sv.smp.doneWithIDSlice(sv.currentFilter.IDs)
-	case inAuthors:
-		sv.whereWeAre = inFilterObject
-		sv.smp.doneWithPubKeySlice(sv.currentFilter.Authors)
-	case inKinds:
-		sv.whereWeAre = inFilterObject
-		sv.smp.doneWithUint16Slice(sv.currentFilter.Kinds)
-	case inAFilterTag:
-		sv.currentFilter.Tags[sv.currentFilterTagName] = sv.currentFilterTagList
-		sv.whereWeAre = inFilterObject
-		sv.smp.doneWithStringSlice(sv.currentFilterTagList)
-
-		// event object properties
-	case inAnEventTag:
-		sv.currentEvent.Tags = append(sv.currentEvent.Tags, sv.currentEventTag)
-		sv.whereWeAre = inTagsList
-		sv.smp.doneWithStringSlice(sv.currentEventTag)
-	case inTags, inTagsList:
-		sv.whereWeAre = inEventObject
-		sv.smp.doneWithTagSlice(sv.currentEvent.Tags)
-
-	default:
-		return fmt.Errorf("unexpected array end at %v", sv.whereWeAre)
-	}
-	return nil
-}
-
-func (sv *sonicVisitor) OnObjectBegin(capacity int) error {
-	// fmt.Println("***", "OnObjectBegin", "==", sv.whereWeAre)
-
-	switch sv.whereWeAre {
-	case inEvent:
-		sv.whereWeAre = inEventObject
-		sv.currentEvent = &Event{}
-	case inAuth:
-		sv.whereWeAre = inEventObject
-		sv.currentEvent = &Event{}
-	case inReq:
-		sv.whereWeAre = inFilterObject
-		sv.currentFilter = &Filter{}
-	case inCount:
-		// set this temporarily, we will switch to a filterObject if we see "count" or "hll"
-		sv.whereWeAre = inFilterObject
-		sv.currentFilter = &Filter{}
-	default:
-		return fmt.Errorf("unexpected object begin at %v", sv.whereWeAre)
-	}
-
-	return nil
-}
-
-func (sv *sonicVisitor) OnObjectKey(key string) error {
-	// fmt.Println("***", "OnObjectKey", key, "==", sv.whereWeAre)
-
-	switch sv.whereWeAre {
-	case inEventObject:
-		switch key {
-		case "id":
-			sv.whereWeAre = inId
-		case "sig":
-			sv.whereWeAre = inSig
-		case "pubkey":
-			sv.whereWeAre = inPubkey
-		case "content":
-			sv.whereWeAre = inContent
-		case "created_at":
-			sv.whereWeAre = inCreatedAt
-		case "kind":
-			sv.whereWeAre = inKind
-		case "tags":
-			sv.whereWeAre = inTags
-		default:
-			return fmt.Errorf("unexpected event attr %s", key)
-		}
-	case inFilterObject:
-		switch key {
-		case "limit":
-			sv.whereWeAre = inLimit
-		case "since":
-			sv.whereWeAre = inSince
-		case "until":
-			sv.whereWeAre = inUntil
-		case "ids":
-			sv.whereWeAre = inIds
-			sv.currentFilter.IDs = sv.smp.reusableIDArray
-		case "authors":
-			sv.whereWeAre = inAuthors
-			sv.currentFilter.Authors = sv.smp.reusablePubKeyArray
-		case "kinds":
-			sv.whereWeAre = inKinds
-			sv.currentFilter.Kinds = sv.smp.reusableUint16Array
-		case "search":
-			sv.whereWeAre = inSearch
-		case "count", "hll":
-			// oops, switch to a countObject
-			sv.whereWeAre = inCountObject
-		default:
-			if len(key) > 1 && key[0] == '#' {
-				if sv.currentFilter.Tags == nil {
-					sv.currentFilter.Tags = make(TagMap, 1)
-				}
-				sv.currentFilterTagList = sv.smp.reusableStringArray
-				sv.currentFilterTagName = key[1:]
-				sv.whereWeAre = inAFilterTag
-			} else {
-				return fmt.Errorf("unexpected filter attr %s", key)
-			}
-		}
-	case inCountObject:
-		// we'll judge by the shape of the value so ignore this
-	default:
-		return fmt.Errorf("unexpected object key %s at %s", key, sv.whereWeAre)
-	}
-
-	return nil
-}
-
-func (sv *sonicVisitor) OnObjectEnd() error {
-	// fmt.Println("***", "OnObjectEnd", "==", sv.whereWeAre)
-
-	switch sv.whereWeAre {
-	case inEventObject:
-		if sv.event != nil {
-			sv.event.Event = *sv.currentEvent
-			sv.whereWeAre = inEvent
-		} else {
-			sv.auth.Event = *sv.currentEvent
-			sv.whereWeAre = inAuth
-		}
-		sv.currentEvent = nil
-	case inFilterObject:
-		if sv.req != nil {
-			sv.req.Filter = *sv.currentFilter
-			sv.whereWeAre = inReq
-		} else {
-			sv.count.Filter = *sv.currentFilter
-			sv.whereWeAre = inCount
-		}
-		sv.currentFilter = nil
-	case inCountObject:
-		sv.whereWeAre = inCount
-	default:
-		return fmt.Errorf("unexpected object end at %s", sv.whereWeAre)
-	}
-
-	return nil
-}
-
-func (sv *sonicVisitor) OnString(v string) error {
-	// fmt.Println("***", "OnString", v, "==", sv.whereWeAre)
-
-	var err error
-	switch sv.whereWeAre {
-	case inEnvelope:
-		switch v {
-		case "EVENT":
-			sv.event = &EventEnvelope{}
-			sv.whereWeAre = inEvent
-		case "REQ":
-			sv.req = &ReqEnvelope{}
-			sv.whereWeAre = inReq
-		case "OK":
-			sv.ok = &OKEnvelope{}
-			sv.whereWeAre = inOk
-		case "EOSE":
-			sv.whereWeAre = inEose
-		case "COUNT":
-			sv.count = &CountEnvelope{}
-			sv.whereWeAre = inCount
-		case "AUTH":
-			sv.auth = &AuthEnvelope{}
-			sv.whereWeAre = inAuth
-		case "CLOSE":
-			sv.whereWeAre = inClose
-		case "CLOSED":
-			sv.closed = &ClosedEnvelope{}
-			sv.whereWeAre = inClosed
-		case "NOTICE":
-			sv.whereWeAre = inNotice
-		default:
-			return UnknownLabel
-		}
-
-		// in an envelope
-	case inEvent:
-		sv.event.SubscriptionID = &v
-	case inReq:
-		sv.req.SubscriptionID = v
-	case inOk:
-		if sv.ok.EventID == [32]byte{} {
-			sv.ok.EventID, err = IDFromHex(v)
-			if err != nil {
-				return err
-			}
-		} else {
-			sv.ok.Reason = v
-		}
-	case inEose:
-		sv.eose = (*EOSEEnvelope)(&v)
-	case inCount:
-		sv.count.SubscriptionID = v
-	case inAuth:
-		sv.auth.Challenge = &v
-	case inClose:
-		sv.close = (*CloseEnvelope)(&v)
-	case inClosed:
-		if sv.closed.SubscriptionID == "" {
-			sv.closed.SubscriptionID = v
-		} else {
-			sv.closed.Reason = v
-		}
-	case inNotice:
-		sv.notice = (*NoticeEnvelope)(&v)
-
-		// filter object properties
-	case inIds:
-		id, err := IDFromHex(v)
-		if err != nil {
-			return err
-		}
-		sv.currentFilter.IDs = append(sv.currentFilter.IDs, id)
-	case inAuthors:
-		pk, err := PubKeyFromHex(v)
-		if err != nil {
-			return err
-		}
-		sv.currentFilter.Authors = append(sv.currentFilter.Authors, pk)
-	case inSearch:
-		sv.currentFilter.Search = v
-		sv.whereWeAre = inFilterObject
-	case inAFilterTag:
-		sv.currentFilterTagList = append(sv.currentFilterTagList, v)
-
-		// id object properties
-	case inId:
-		sv.currentEvent.ID = v
-		sv.whereWeAre = inEventObject
-	case inContent:
-		sv.currentEvent.Content = v
-		sv.whereWeAre = inEventObject
-	case inPubkey:
-		sv.currentEvent.PubKey = v
-		sv.whereWeAre = inEventObject
-	case inSig:
-		sv.currentEvent.Sig = v
-		sv.whereWeAre = inEventObject
-	case inAnEventTag:
-		sv.currentEventTag = append(sv.currentEventTag, v)
-
-		// count object properties
-	case inCountObject:
-		sv.count.HyperLogLog, _ = hex.DecodeString(v)
-
-	default:
-		return fmt.Errorf("unexpected string %s at %v", v, sv.whereWeAre)
-	}
-	return nil
-}
-
-func (sv *sonicVisitor) OnInt64(v int64, _ stdlibjson.Number) error {
-	// fmt.Println("***", "OnInt64", v, "==", sv.whereWeAre)
-
-	switch sv.whereWeAre {
-	// event object
-	case inCreatedAt:
-		sv.currentEvent.CreatedAt = Timestamp(v)
-		sv.whereWeAre = inEventObject
-	case inKind:
-		sv.currentEvent.Kind = int(v)
-		sv.whereWeAre = inEventObject
-
-	// filter object
-	case inLimit:
-		sv.currentFilter.Limit = int(v)
-		sv.currentFilter.LimitZero = v == 0
-		sv.whereWeAre = inFilterObject
-	case inSince:
-		sv.currentFilter.Since = (*Timestamp)(&v)
-		sv.whereWeAre = inFilterObject
-	case inUntil:
-		sv.currentFilter.Until = (*Timestamp)(&v)
-		sv.whereWeAre = inFilterObject
-	case inKinds:
-		sv.currentFilter.Kinds = append(sv.currentFilter.Kinds, int(v))
-
-	// count object
-	case inCountObject:
-		sv.count.Count = &v
-	}
-	return nil
-}
-
-func (sv *sonicVisitor) OnBool(v bool) error {
-	// fmt.Println("***", "OnBool", v, "==", sv.whereWeAre)
-
-	if sv.whereWeAre == inOk {
-		sv.ok.OK = v
-		return nil
-	} else {
-		return fmt.Errorf("unexpected boolean")
-	}
-}
-
-func (_ sonicVisitor) OnNull() error {
-	return fmt.Errorf("null shouldn't be anywhere in a message")
-}
-
-func (_ sonicVisitor) OnFloat64(v float64, n stdlibjson.Number) error {
-	return fmt.Errorf("float shouldn't be anywhere in a message")
-}
-
-type sonicMessageParser struct {
-	reusableTagArray    []Tag
-	reusableIDArray     []ID
-	reusablePubKeyArray []PubKey
-	reusableStringArray []string
-	reusableUint16Array []Kind
-}
-
-// NewMessageParser returns a sonicMessageParser object that is intended to be reused many times.
-// It is not goroutine-safe.
-func NewMessageParser() sonicMessageParser {
-	return sonicMessageParser{
-		reusableTagArray:    make([]Tag, 0, 10000),
-		reusableStringArray: make([]string, 0, 10000),
-		reusableIDArray:     make([]ID, 0, 10000),
-		reusablePubKeyArray: make([]PubKey, 0, 10000),
-		reusableUint16Array: make([]Kind, 0, 10000),
-	}
-}
-
-var NewSonicMessageParser = NewMessageParser
-
-func (smp *sonicMessageParser) doneWithTagSlice(slice []Tag) {
-	if unsafe.SliceData(smp.reusableTagArray) == unsafe.SliceData(slice) {
-		smp.reusableTagArray = slice[len(slice):]
-	}
-
-	if cap(smp.reusableTagArray) < 7 {
-		// create a new one
-		smp.reusableTagArray = make([]Tag, 0, 10000)
-	}
-}
-
-func (smp *sonicMessageParser) doneWithIDSlice(slice []string) {
-	if unsafe.SliceData(smp.reusableStringArray) == unsafe.SliceData(slice) {
-		smp.reusableStringArray = slice[len(slice):]
-	}
-
-	if cap(smp.reusableStringArray) < 15 {
-		// create a new one
-		smp.reusableStringArray = make([]string, 0, 10000)
-	}
-}
-
-func (smp *sonicMessageParser) doneWithUint16Slice(slice []Kind) {
-	if unsafe.SliceData(smp.reusableUint16Array) == unsafe.SliceData(slice) {
-		smp.reusableUint16Array = slice[len(slice):]
-	}
-
-	if cap(smp.reusableUint16Array) < 8 {
-		// create a new one
-		smp.reusableUint16Array = make([]Kind, 0, 10000)
-	}
-}
-
-// ParseMessage parses a message like ["EVENT", ...] or ["REQ", ...] and returns an Envelope.
-// The returned envelopes, filters and events' slices should not be appended to, otherwise stuff
-// will break.
-//
-// When an unexpected message (like ["NEG-OPEN", ...]) is found, the error UnknownLabel will be
-// returned. Other errors will be returned if the JSON is malformed or the objects are not exactly
-// as they should.
-func (smp sonicMessageParser) ParseMessage(message string) (Envelope, error) {
-	sv := &sonicVisitor{smp: &smp}
-	sv.whereWeAre = inEnvelope
-
-	err := ast.Preorder(message, sv, nil)
-
-	return sv.mainEnvelope, err
-}
--- a/envelopes_test.go
+++ b/envelopes_test.go
@@ -1,11 +1,9 @@
-//go:build sonic
-
 package nostr

 import (
-	"bufio"
-	"os"
+	"encoding/hex"
 	"testing"
+	"unsafe"

 	"github.com/stretchr/testify/require"
 )
@@ -34,17 +32,17 @@ func TestParseMessage(t *testing.T) {
 		{
 			Name:             "EVENT envelope with subscription id",
 			Message:          `["EVENT","_",{"kind":1,"id":"dc90c95f09947507c1044e8f48bcf6350aa6bff1507dd4acfc755b9239b5c962","pubkey":"3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d","created_at":1644271588,"tags":[],"content":"now that https://blueskyweb.org/blog/2-7-2022-overview was announced we can stop working on nostr?","sig":"230e9d8f0ddaf7eb70b5f7741ccfa37e87a455c9a469282e3464e2052d3192cd63a167e196e381ef9d7e69e9ea43af2443b839974dc85d8aaab9efe1d9296524"}]`,
-			ExpectedEnvelope: &EventEnvelope{SubscriptionID: ptr("_"), Event: Event{Kind: 1, ID: "dc90c95f09947507c1044e8f48bcf6350aa6bff1507dd4acfc755b9239b5c962", PubKey: "3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d", CreatedAt: 1644271588, Tags: Tags{}, Content: "now that https://blueskyweb.org/blog/2-7-2022-overview was announced we can stop working on nostr?", Sig: "230e9d8f0ddaf7eb70b5f7741ccfa37e87a455c9a469282e3464e2052d3192cd63a167e196e381ef9d7e69e9ea43af2443b839974dc85d8aaab9efe1d9296524"}},
+			ExpectedEnvelope: &EventEnvelope{SubscriptionID: ptr("_"), Event: Event{Kind: 1, ID: MustIDFromHex("dc90c95f09947507c1044e8f48bcf6350aa6bff1507dd4acfc755b9239b5c962"), PubKey: MustPubKeyFromHex("3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d"), CreatedAt: 1644271588, Tags: Tags{}, Content: "now that https://blueskyweb.org/blog/2-7-2022-overview was announced we can stop working on nostr?", Sig: mustSigFromHex("230e9d8f0ddaf7eb70b5f7741ccfa37e87a455c9a469282e3464e2052d3192cd63a167e196e381ef9d7e69e9ea43af2443b839974dc85d8aaab9efe1d9296524")}},
 		},
 		{
 			Name:             "EVENT envelope without subscription id",
 			Message:          `["EVENT",{"kind":1,"id":"dc90c95f09947507c1044e8f48bcf6350aa6bff1507dd4acfc755b9239b5c962","pubkey":"3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d","created_at":1644271588,"tags":[],"content":"now that https://blueskyweb.org/blog/2-7-2022-overview was announced we can stop working on nostr?","sig":"230e9d8f0ddaf7eb70b5f7741ccfa37e87a455c9a469282e3464e2052d3192cd63a167e196e381ef9d7e69e9ea43af2443b839974dc85d8aaab9efe1d9296524"}]`,
-			ExpectedEnvelope: &EventEnvelope{Event: Event{Kind: 1, ID: "dc90c95f09947507c1044e8f48bcf6350aa6bff1507dd4acfc755b9239b5c962", PubKey: "3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d", CreatedAt: 1644271588, Tags: Tags{}, Content: "now that https://blueskyweb.org/blog/2-7-2022-overview was announced we can stop working on nostr?", Sig: "230e9d8f0ddaf7eb70b5f7741ccfa37e87a455c9a469282e3464e2052d3192cd63a167e196e381ef9d7e69e9ea43af2443b839974dc85d8aaab9efe1d9296524"}},
+			ExpectedEnvelope: &EventEnvelope{Event: Event{Kind: 1, ID: MustIDFromHex("dc90c95f09947507c1044e8f48bcf6350aa6bff1507dd4acfc755b9239b5c962"), PubKey: MustPubKeyFromHex("3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d"), CreatedAt: 1644271588, Tags: Tags{}, Content: "now that https://blueskyweb.org/blog/2-7-2022-overview was announced we can stop working on nostr?", Sig: mustSigFromHex("230e9d8f0ddaf7eb70b5f7741ccfa37e87a455c9a469282e3464e2052d3192cd63a167e196e381ef9d7e69e9ea43af2443b839974dc85d8aaab9efe1d9296524")}},
 		},
 		{
 			Name:             "EVENT envelope with tags",
 			Message:          `["EVENT",{"kind":3,"id":"9e662bdd7d8abc40b5b15ee1ff5e9320efc87e9274d8d440c58e6eed2dddfbe2","pubkey":"373ebe3d45ec91977296a178d9f19f326c70631d2a1b0bbba5c5ecc2eb53b9e7","created_at":1644844224,"tags":[["p","3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d"],["e","75fc5ac2487363293bd27fb0d14fb966477d0f1dbc6361d37806a6a740eda91e"],["p","46d0dfd3a724a302ca9175163bdf788f3606b3fd1bb12d5fe055d1e418cb60ea"]],"content":"{\"wss://nostr-pub.wellorder.net\":{\"read\":true,\"write\":true},\"wss://nostr.bitcoiner.social\":{\"read\":false,\"write\":true},\"wss://expensive-relay.fiatjaf.com\":{\"read\":true,\"write\":true},\"wss://relayer.fiatjaf.com\":{\"read\":true,\"write\":true},\"wss://relay.bitid.nz\":{\"read\":true,\"write\":true},\"wss://nostr.rocks\":{\"read\":true,\"write\":true}}","sig":"811355d3484d375df47581cb5d66bed05002c2978894098304f20b595e571b7e01b2efd906c5650080ffe49cf1c62b36715698e9d88b9e8be43029a2f3fa66be"}]`,
-			ExpectedEnvelope: &EventEnvelope{Event: Event{Kind: 3, ID: "9e662bdd7d8abc40b5b15ee1ff5e9320efc87e9274d8d440c58e6eed2dddfbe2", PubKey: "373ebe3d45ec91977296a178d9f19f326c70631d2a1b0bbba5c5ecc2eb53b9e7", CreatedAt: 1644844224, Tags: Tags{Tag{"p", "3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d"}, Tag{"e", "75fc5ac2487363293bd27fb0d14fb966477d0f1dbc6361d37806a6a740eda91e"}, Tag{"p", "46d0dfd3a724a302ca9175163bdf788f3606b3fd1bb12d5fe055d1e418cb60ea"}}, Content: "{\"wss://nostr-pub.wellorder.net\":{\"read\":true,\"write\":true},\"wss://nostr.bitcoiner.social\":{\"read\":false,\"write\":true},\"wss://expensive-relay.fiatjaf.com\":{\"read\":true,\"write\":true},\"wss://relayer.fiatjaf.com\":{\"read\":true,\"write\":true},\"wss://relay.bitid.nz\":{\"read\":true,\"write\":true},\"wss://nostr.rocks\":{\"read\":true,\"write\":true}}", Sig: "811355d3484d375df47581cb5d66bed05002c2978894098304f20b595e571b7e01b2efd906c5650080ffe49cf1c62b36715698e9d88b9e8be43029a2f3fa66be"}},
+			ExpectedEnvelope: &EventEnvelope{Event: Event{Kind: 3, ID: MustIDFromHex("9e662bdd7d8abc40b5b15ee1ff5e9320efc87e9274d8d440c58e6eed2dddfbe2"), PubKey: MustPubKeyFromHex("373ebe3d45ec91977296a178d9f19f326c70631d2a1b0bbba5c5ecc2eb53b9e7"), CreatedAt: 1644844224, Tags: Tags{Tag{"p", "3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d"}, Tag{"e", "75fc5ac2487363293bd27fb0d14fb966477d0f1dbc6361d37806a6a740eda91e"}, Tag{"p", "46d0dfd3a724a302ca9175163bdf788f3606b3fd1bb12d5fe055d1e418cb60ea"}}, Content: "{\"wss://nostr-pub.wellorder.net\":{\"read\":true,\"write\":true},\"wss://nostr.bitcoiner.social\":{\"read\":false,\"write\":true},\"wss://expensive-relay.fiatjaf.com\":{\"read\":true,\"write\":true},\"wss://relayer.fiatjaf.com\":{\"read\":true,\"write\":true},\"wss://relay.bitid.nz\":{\"read\":true,\"write\":true},\"wss://nostr.rocks\":{\"read\":true,\"write\":true}}", Sig: mustSigFromHex("811355d3484d375df47581cb5d66bed05002c2978894098304f20b595e571b7e01b2efd906c5650080ffe49cf1c62b36715698e9d88b9e8be43029a2f3fa66be")}},
 		},
 		{
 			Name:             "NOTICE envelope",
@@ -59,22 +57,22 @@ func TestParseMessage(t *testing.T) {
 		{
 			Name:             "COUNT envelope",
 			Message:          `["COUNT","z",{"count":12}]`,
-			ExpectedEnvelope: &CountEnvelope{SubscriptionID: "z", Count: ptr(int64(12))},
+			ExpectedEnvelope: &CountEnvelope{SubscriptionID: "z", Count: ptr(uint32(12))},
 		},
 		{
 			Name:             "COUNT envelope with HLL",
 			Message:          `["COUNT","sub1",{"count":42, "hll": "0100000101000000000000040000000001020000000002000000000200000003000002040000000101020001010000000000000007000004010000000200040000020400000000000102000002000004010000010000000301000102030002000301000300010000070000000001000004000102010000000400010002000000000103000100010001000001040100020001000000000000010000020000000000030100000001000400010000000000000901010100000000040000000b030000010100010000010000010000000003000000000000010003000100020000000000010000010100000100000104000200030001000300000001000101000102"}]`,
-			ExpectedEnvelope: &CountEnvelope{SubscriptionID: "sub1", Count: ptr(int64(42)), HyperLogLog: []byte{1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 1, 2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 2, 4, 0, 0, 0, 1, 1, 2, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 4, 1, 0, 0, 0, 2, 0, 4, 0, 0, 2, 4, 0, 0, 0, 0, 0, 1, 2, 0, 0, 2, 0, 0, 4, 1, 0, 0, 1, 0, 0, 0, 3, 1, 0, 1, 2, 3, 0, 2, 0, 3, 1, 0, 3, 0, 1, 0, 0, 7, 0, 0, 0, 0, 1, 0, 0, 4, 0, 1, 2, 1, 0, 0, 0, 4, 0, 1, 0, 2, 0, 0, 0, 0, 1, 3, 0, 1, 0, 1, 0, 1, 0, 0, 1, 4, 1, 0, 2, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 2, 0, 0, 0, 0, 0, 3, 1, 0, 0, 0, 1, 0, 4, 0, 1, 0, 0, 0, 0, 0, 0, 9, 1, 1, 1, 0, 0, 0, 0, 4, 0, 0, 0, 11, 3, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 1, 0, 3, 0, 1, 0, 2, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 4, 0, 2, 0, 3, 0, 1, 0, 3, 0, 0, 0, 1, 0, 1, 1, 0, 1, 2}},
+			ExpectedEnvelope: &CountEnvelope{SubscriptionID: "sub1", Count: ptr(uint32(42)), HyperLogLog: []byte{1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 1, 2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 2, 4, 0, 0, 0, 1, 1, 2, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 4, 1, 0, 0, 0, 2, 0, 4, 0, 0, 2, 4, 0, 0, 0, 0, 0, 1, 2, 0, 0, 2, 0, 0, 4, 1, 0, 0, 1, 0, 0, 0, 3, 1, 0, 1, 2, 3, 0, 2, 0, 3, 1, 0, 3, 0, 1, 0, 0, 7, 0, 0, 0, 0, 1, 0, 0, 4, 0, 1, 2, 1, 0, 0, 0, 4, 0, 1, 0, 2, 0, 0, 0, 0, 1, 3, 0, 1, 0, 1, 0, 1, 0, 0, 1, 4, 1, 0, 2, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 2, 0, 0, 0, 0, 0, 3, 1, 0, 0, 0, 1, 0, 4, 0, 1, 0, 0, 0, 0, 0, 0, 9, 1, 1, 1, 0, 0, 0, 0, 4, 0, 0, 0, 11, 3, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 1, 0, 3, 0, 1, 0, 2, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 4, 0, 2, 0, 3, 0, 1, 0, 3, 0, 0, 0, 1, 0, 1, 1, 0, 1, 2}},
 		},
 		{
 			Name:             "OK envelope success",
 			Message:          `["OK","3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefaaaaa",true,""]`,
-			ExpectedEnvelope: &OKEnvelope{EventID: "3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefaaaaa", OK: true, Reason: ""},
+			ExpectedEnvelope: &OKEnvelope{EventID: MustIDFromHex("3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefaaaaa"), OK: true, Reason: ""},
 		},
 		{
 			Name:             "OK envelope failure",
 			Message:          `["OK","3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefaaaaa",false,"error: could not connect to the database"]`,
-			ExpectedEnvelope: &OKEnvelope{EventID: "3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefaaaaa", OK: false, Reason: "error: could not connect to the database"},
+			ExpectedEnvelope: &OKEnvelope{EventID: MustIDFromHex("3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefaaaaa"), OK: false, Reason: "error: could not connect to the database"},
 		},
 		{
 			Name:             "CLOSED envelope with underscore",
@@ -94,12 +92,12 @@ func TestParseMessage(t *testing.T) {
 		{
 			Name:             "AUTH envelope with event",
 			Message:          `["AUTH",{"kind":1,"id":"ae1fc7154296569d87ca4663f6bdf448c217d1590d28c85d158557b8b43b4d69","pubkey":"79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798","created_at":1683660344,"tags":[],"content":"hello world","sig":"94e10947814b1ebe38af42300ecd90c7642763896c4f69506ae97bfdf54eec3c0c21df96b7d95daa74ff3d414b1d758ee95fc258125deebc31df0c6ba9396a51"}]`,
-			ExpectedEnvelope: &AuthEnvelope{Event: Event{Kind: 1, ID: "ae1fc7154296569d87ca4663f6bdf448c217d1590d28c85d158557b8b43b4d69", PubKey: "79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798", CreatedAt: 1683660344, Tags: Tags{}, Content: "hello world", Sig: "94e10947814b1ebe38af42300ecd90c7642763896c4f69506ae97bfdf54eec3c0c21df96b7d95daa74ff3d414b1d758ee95fc258125deebc31df0c6ba9396a51"}},
+			ExpectedEnvelope: &AuthEnvelope{Event: Event{Kind: 1, ID: MustIDFromHex("ae1fc7154296569d87ca4663f6bdf448c217d1590d28c85d158557b8b43b4d69"), PubKey: MustPubKeyFromHex("79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798"), CreatedAt: 1683660344, Tags: Tags{}, Content: "hello world", Sig: mustSigFromHex("94e10947814b1ebe38af42300ecd90c7642763896c4f69506ae97bfdf54eec3c0c21df96b7d95daa74ff3d414b1d758ee95fc258125deebc31df0c6ba9396a51")}},
 		},
 		{
 			Name:             "REQ envelope",
 			Message:          `["REQ","million", {"kinds": [1]}, {"kinds": [30023 ], "#d": ["buteko",    "batuke"]}]`,
-			ExpectedEnvelope: &ReqEnvelope{SubscriptionID: "million", Filters: Filters{{Kinds: []Kind{1}}, {Kinds: []Kind{30023}, Tags: TagMap{"d": []string{"buteko", "batuke"}}}}},
+			ExpectedEnvelope: &ReqEnvelope{SubscriptionID: "million", Filters: []Filter{{Kinds: []Kind{1}}, {Kinds: []Kind{30023}, Tags: TagMap{"d": []string{"buteko", "batuke"}}}}},
 		},
 		{
 			Name:             "CLOSE envelope",
@@ -114,36 +112,14 @@ func TestParseMessage(t *testing.T) {
 		{
 			Name:             "REQ from jumble",
 			Message:          `["REQ","sub:1",{"kinds":[1,6],"limit":100}]`,
-			ExpectedEnvelope: &ReqEnvelope{SubscriptionID: "sub:1", Filters: Filters{{Kinds: []int{1, 6}, Limit: 100}}},
+			ExpectedEnvelope: &ReqEnvelope{SubscriptionID: "sub:1", Filters: []Filter{{Kinds: []Kind{1, 6}, Limit: 100}}},
 		},
 	}

 	t.Run("standard", func(t *testing.T) {
 		for _, testCase := range testCases {
 			t.Run(testCase.Name, func(t *testing.T) {
-				envelope := ParseMessage(testCase.Message)
-				if testCase.ExpectedEnvelope == nil && envelope == nil {
-					return
-				}
-
-				if testCase.ExpectedEnvelope == nil {
-					require.Nil(t, envelope, "expected nil but got %v", envelope)
-					return
-				}
-
-				require.NotNil(t, envelope, "expected non-nil envelope but got nil")
-				require.Equal(t, testCase.ExpectedEnvelope.String(), envelope.String())
-			})
-		}
-	})
-
-	t.Run("sonic", func(t *testing.T) {
-		smp := NewSonicMessageParser()
-
-		for _, testCase := range testCases {
-			t.Run(testCase.Name, func(t *testing.T) {
-				envelope, err := smp.ParseMessage(testCase.Message)
-
+				envelope, err := ParseMessage(testCase.Message)
 				if testCase.ExpectedEnvelope == nil && envelope == nil {
 					return
 				}
@@ -155,45 +131,14 @@ func TestParseMessage(t *testing.T) {

 				require.NoError(t, err)
 				require.NotNil(t, envelope, "expected non-nil envelope but got nil")
-				require.Equal(t, testCase.ExpectedEnvelope, envelope)
+				require.Equal(t, testCase.ExpectedEnvelope.String(), envelope.String())
 			})
 		}
 	})
 }

-func TestParseMessagesFromFile(t *testing.T) {
-	file, err := os.Open("testdata/messages.jsonl")
-	if err != nil {
-		t.Skipf("Skipping test because testdata/messages.jsonl could not be opened: %v", err)
-		return
-	}
-	defer file.Close()
-
-	scanner := bufio.NewScanner(file)
-	smp := NewSonicMessageParser()
-	lineNum := 0
-
-	for scanner.Scan() {
-		lineNum++
-		line := scanner.Bytes()
-		if len(line) == 0 {
-			continue
-		}
-
-		standardEnvelope := ParseMessage(string(line))
-		sonicEnvelope, err := smp.ParseMessage(string(line))
-
-		if standardEnvelope == nil {
-			require.Nil(t, sonicEnvelope, "line %d: standard parser returned nil but sonic parser didn't", lineNum)
-			continue
-		}
-
-		require.NoError(t, err, "line %d: sonic parser returned error", lineNum)
-		require.NotNil(t, sonicEnvelope, "line %d: standard parser returned non-nil but sonic parser returned nil", lineNum)
-
-		require.Equal(t, standardEnvelope, sonicEnvelope,
-			"line %d: parsers returned different results", lineNum)
-	}
-
-	require.NoError(t, scanner.Err(), "error reading file")
+func mustSigFromHex(sigStr string) [64]byte {
+	var sig [64]byte
+	hex.Decode(sig[:], unsafe.Slice(unsafe.StringData(sigStr), 128))
+	return sig
 }
--- a/eventstore/cmd/eventstore/query-or-save.go
+++ b/eventstore/cmd/eventstore/query-or-save.go
@@ -28,7 +28,7 @@ var queryOrSave = &cli.Command{
 			return doSave(ctx, line, *e)
 		}
 		if json.Unmarshal([]byte(line), re) == nil {
-			return doQuery(ctx, &re.Filter)
+			return doQuery(ctx, &re.Filters[0])
 		}
 		if json.Unmarshal([]byte(line), f) == nil && len(f.String()) > 2 {
 			return doQuery(ctx, f)
--- a/go.mod
+++ b/go.mod
@@ -12,7 +12,6 @@ require (
 	github.com/blugelabs/bluge v0.2.2
 	github.com/btcsuite/btcd/btcec/v2 v2.3.4
 	github.com/btcsuite/btcd/btcutil v1.1.5
-	github.com/bytedance/sonic v1.13.1
 	github.com/coder/websocket v1.8.13
 	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.4.0
 	github.com/dgraph-io/badger/v4 v4.5.0
@@ -59,10 +58,8 @@ require (
 	github.com/blugelabs/ice/v2 v2.0.1 // indirect
 	github.com/btcsuite/btcd v0.24.2 // indirect
 	github.com/btcsuite/btcd/chaincfg/chainhash v1.1.0 // indirect
-	github.com/bytedance/sonic/loader v0.2.4 // indirect
 	github.com/caio/go-tdigest v3.1.0+incompatible // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
-	github.com/cloudwego/base64x v0.1.5 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/decred/dcrd/crypto/blake256 v1.1.0 // indirect
 	github.com/dgraph-io/ristretto/v2 v2.1.0 // indirect
@@ -75,7 +72,6 @@ require (
 	github.com/gorilla/css v1.0.1 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/klauspost/compress v1.18.0 // indirect
-	github.com/klauspost/cpuid/v2 v2.2.10 // indirect
 	github.com/kr/text v0.2.0 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
@@ -88,12 +84,12 @@ require (
 	github.com/savsgio/gotils v0.0.0-20240704082632-aef3928b8a38 // indirect
 	github.com/tidwall/match v1.1.1 // indirect
 	github.com/tidwall/pretty v1.2.1 // indirect
-	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
 	go.opencensus.io v0.24.0 // indirect
-	golang.org/x/arch v0.15.0 // indirect
 	golang.org/x/sys v0.31.0 // indirect
 	google.golang.org/protobuf v1.36.2 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
+
+replace github.com/coder/websocket => /tmp/websocket
--- a/go.sum
+++ b/go.sum
@@ -86,11 +86,6 @@ github.com/btcsuite/snappy-go v0.0.0-20151229074030-0bdef8d06723/go.mod h1:8woku
 github.com/btcsuite/snappy-go v1.0.0/go.mod h1:8woku9dyThutzjeg+3xrA5iCpBRH8XEEg3lh6TiUghc=
 github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792/go.mod h1:ghJtEyQwv5/p4Mg4C0fgbePVuGr935/5ddU9Z3TmDRY=
 github.com/btcsuite/winsvc v1.0.0/go.mod h1:jsenWakMcC0zFBFurPLEAyrnc/teJEM1O46fmI40EZs=
-github.com/bytedance/sonic v1.13.1 h1:Jyd5CIvdFnkOWuKXr+wm4Nyk2h0yAFsr8ucJgEasO3g=
-github.com/bytedance/sonic v1.13.1/go.mod h1:o68xyaF9u2gvVBuGHPlUVCy+ZfmNNO5ETf1+KgkJhz4=
-github.com/bytedance/sonic/loader v0.1.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU=
-github.com/bytedance/sonic/loader v0.2.4 h1:ZWCw4stuXUsn1/+zQDqeE7JKP+QO47tz7QCNan80NzY=
-github.com/bytedance/sonic/loader v0.2.4/go.mod h1:N8A3vUdtUebEY2/VQC0MyhYeKUFosQU6FxH2JmUe6VI=
 github.com/caio/go-tdigest v3.1.0+incompatible h1:uoVMJ3Q5lXmVLCCqaMGHLBWnbGoN6Lpu7OAUPR60cds=
 github.com/caio/go-tdigest v3.1.0+incompatible/go.mod h1:sHQM/ubZStBUmF1WbB8FAm8q9GjDajLC5T7ydxE3JHI=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
@@ -99,14 +94,9 @@ github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghf
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/cloudwego/base64x v0.1.5 h1:XPciSp1xaq2VCSt6lF0phncD4koWyULpl5bUxbfCyP4=
-github.com/cloudwego/base64x v0.1.5/go.mod h1:0zlkT4Wn5C6NdauXdJRhSKRlJvmclQ1hhJgA0rcu/8w=
-github.com/cloudwego/iasm v0.2.0/go.mod h1:8rXZaNYT2n95jn+zTI1sDr+IgcD2GVs0nlbbQPiEFhY=
 github.com/cmars/basen v0.0.0-20150613233007-fe3947df716e h1:0XBUw73chJ1VYSsfvcPvVT7auykAJce9FpRr10L6Qhw=
 github.com/cmars/basen v0.0.0-20150613233007-fe3947df716e/go.mod h1:P13beTBKr5Q18lJe1rIoLUqjM+CB1zYrRg44ZqGuQSA=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
-github.com/coder/websocket v1.8.13 h1:f3QZdXy7uGVz+4uCJy2nTZyM0yTBj8yANEHhqlXZ9FE=
-github.com/coder/websocket v1.8.13/go.mod h1:LNVeNrXQZfe5qhS9ALED3uA+l5pPqvwXg3CKoDBB2gs=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
 github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
@@ -204,10 +194,6 @@ github.com/kkdai/bstream v0.0.0-20161212061736-f391b8402d23/go.mod h1:J+Gs4SYgM6
 github.com/klauspost/compress v1.15.2/go.mod h1:PhcZ0MbTNciWF3rruxRgKxI5NkcHHrHUDtV4Yw2GlzU=
 github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
 github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
-github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
-github.com/klauspost/cpuid/v2 v2.2.10 h1:tBs3QSyvjDyFTq3uoc/9xFpCuOsJQFNPiAhYdw2skhE=
-github.com/klauspost/cpuid/v2 v2.2.10/go.mod h1:hqwkgyIinND0mEev00jJYCxPNVRVXFQeu1XKlok6oO0=
-github.com/knz/go-libedit v1.10.1/go.mod h1:MZTVkCWyz0oBc7JOWP3wNAzd002ZbM/5hgShxwh4x8M=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
@@ -294,8 +280,6 @@ github.com/tidwall/match v1.1.1/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JT
 github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
 github.com/tidwall/pretty v1.2.1 h1:qjsOFOWWQl+N3RsoF5/ssm1pHmJJwhjlSbZ51I6wMl4=
 github.com/tidwall/pretty v1.2.1/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
-github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS4MhqMhdFk5YI=
-github.com/twitchyliquid64/golang-asm v0.15.1/go.mod h1:a1lVb/DtPvCB8fslRZhAngC2+aY1QWCk3Cedj/Gdt08=
 github.com/tyler-smith/go-bip32 v1.0.0 h1:sDR9juArbUgX+bO/iblgZnMPeWY1KZMUC2AFUJdv5KE=
 github.com/tyler-smith/go-bip32 v1.0.0/go.mod h1:onot+eHknzV4BVPwrzqY5OoVpyCvnwD7lMawL5aQupE=
 github.com/tyler-smith/go-bip39 v1.1.0 h1:5eUemwrMargf3BSLRRCalXT93Ns6pQJIjYQN2nyfOP8=
@@ -314,8 +298,6 @@ github.com/xyproto/randomstring v1.0.5 h1:YtlWPoRdgMu3NZtP45drfy1GKoojuR7hmRcnhZ
 github.com/xyproto/randomstring v1.0.5/go.mod h1:rgmS5DeNXLivK7YprL0pY+lTuhNQW3iGxZ18UQApw/E=
 go.opencensus.io v0.24.0 h1:y73uSU6J157QMP2kn2r30vwW1A2W2WFwSCGnAVxeaD0=
 go.opencensus.io v0.24.0/go.mod h1:vNK8G9p7aAivkbmorf4v+7Hgx+Zs0yY+0fOtgBfjQKo=
-golang.org/x/arch v0.15.0 h1:QtOrQd0bTUnhNVNndMpLHNWrDmYzZ2KDqSrEymqInZw=
-golang.org/x/arch v0.15.0/go.mod h1:JmwW7aLIoRUKgaTzhkiEFxvcEiQGyOg9BMonBJUS7EE=
 golang.org/x/crypto v0.0.0-20170613210332-850760c427c5/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20170930174604-9419663f5a44/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
@@ -429,5 +411,4 @@ honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 launchpad.net/gocheck v0.0.0-20140225173054-000000000087 h1:Izowp2XBH6Ya6rv+hqbceQyw/gSGoXfH/UPoTGduL54=
 launchpad.net/gocheck v0.0.0-20140225173054-000000000087/go.mod h1:hj7XX3B/0A+80Vse0e+BUHsHMTEhd0O4cpUHr/e/BUM=
-nullprogram.com/x/optparse v1.0.0/go.mod h1:KdyPE+Igbe0jQUrVfMqDMeJQIJZEuyV7pjYmp6pbG50=
 rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=
--- a/khatru/handlers.go
+++ b/khatru/handlers.go
@@ -118,8 +118,6 @@ func (rl *Relay) HandleWebsocket(w http.ResponseWriter, r *http.Request) {
 			rl.OnConnect(ctx)
 		}

-		smp := nostr.NewMessageParser()
-
 		for {
 			typ, msgb, err := ws.conn.ReadMessage()
 			if err != nil {
@@ -145,11 +143,8 @@ func (rl *Relay) HandleWebsocket(w http.ResponseWriter, r *http.Request) {
 			// this is safe because ReadMessage() will always create a new slice
 			message := unsafe.String(unsafe.SliceData(msgb), len(msgb))

-			// parse messages sequentially otherwise sonic breaks
-			envelope, err := smp.ParseMessage(message)
-
-			// then delegate to the goroutine
 			go func(message string) {
+				envelope, err := nostr.ParseMessage(message)
 				if err != nil {
 					if err == nostr.UnknownLabel && rl.Negentropy {
 						envelope = nip77.ParseNegMessage(message)
@@ -287,22 +282,24 @@ func (rl *Relay) HandleWebsocket(w http.ResponseWriter, r *http.Request) {
 					reqCtx = context.WithValue(reqCtx, subscriptionIdKey, env.SubscriptionID)

 					// handle each filter separately -- dispatching events as they're loaded from databases
-					srl := rl
-					if rl.getSubRelayFromFilter != nil {
-						srl = rl.getSubRelayFromFilter(env.Filter)
-					}
-					err := srl.handleRequest(reqCtx, env.SubscriptionID, &eose, ws, env.Filter)
-					if err != nil {
-						// fail everything if any filter is rejected
-						reason := err.Error()
-						if strings.HasPrefix(reason, "auth-required:") {
-							RequestAuth(ctx)
+					for _, filter := range env.Filters {
+						srl := rl
+						if rl.getSubRelayFromFilter != nil {
+							srl = rl.getSubRelayFromFilter(filter)
+						}
+						err := srl.handleRequest(reqCtx, env.SubscriptionID, &eose, ws, filter)
+						if err != nil {
+							// fail everything if any filter is rejected
+							reason := err.Error()
+							if strings.HasPrefix(reason, "auth-required:") {
+								RequestAuth(ctx)
+							}
+							ws.WriteJSON(nostr.ClosedEnvelope{SubscriptionID: env.SubscriptionID, Reason: reason})
+							cancelReqCtx(errors.New("filter rejected"))
+							return
+						} else {
+							rl.addListener(ws, env.SubscriptionID, srl, filter, cancelReqCtx)
 						}
-						ws.WriteJSON(nostr.ClosedEnvelope{SubscriptionID: env.SubscriptionID, Reason: reason})
-						cancelReqCtx(errors.New("filter rejected"))
-						return
-					} else {
-						rl.addListener(ws, env.SubscriptionID, srl, env.Filter, cancelReqCtx)
 					}

 					go func() {
--- a/nip77/idsonly.go
+++ b/nip77/idsonly.go
@@ -51,7 +51,7 @@ func FetchIDsOnly(

 	msg := neg.Start()
 	open, _ := OpenEnvelope{id, filter, msg}.MarshalJSON()
-	err = <-r.Write(open)
+	err = r.WriteWithError(open)
 	if err != nil {
 		return nil, fmt.Errorf("failed to write to relay: %w", err)
 	}
--- a/nip77/nip77.go
+++ b/nip77/nip77.go
@@ -79,7 +79,7 @@ func NegentropySync(

 	msg := neg.Start()
 	open, _ := OpenEnvelope{id, filter, msg}.MarshalJSON()
-	err = <-r.Write(open)
+	err = r.WriteWithError(open)
 	if err != nil {
 		return fmt.Errorf("failed to write to relay: %w", err)
 	}
--- a/relay.go
+++ b/relay.go
@@ -1,7 +1,6 @@
 package nostr

 import (
-	"bytes"
 	"context"
 	"crypto/tls"
 	"errors"
@@ -10,7 +9,6 @@ import (
 	"log"
 	"net/http"
 	"strconv"
-	"strings"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -38,7 +36,6 @@ type Relay struct {
 	noticeHandler                 func(string) // NIP-01 NOTICEs
 	customHandler                 func(string) // nonstandard unparseable messages
 	okCallbacks                   *xsync.MapOf[ID, func(bool, string)]
-	writeQueue                    chan writeRequest
 	subscriptionChannelCloseQueue chan *Subscription

 	// custom things that aren't often used
@@ -46,11 +43,6 @@ type Relay struct {
 	AssumeValid bool // this will skip verifying signatures for events received from this relay
 }

-type writeRequest struct {
-	msg    []byte
-	answer chan error
-}
-
 // NewRelay returns a new relay. It takes a context that, when canceled, will close the relay connection.
 func NewRelay(ctx context.Context, url string, opts RelayOptions) *Relay {
 	ctx, cancel := context.WithCancelCause(ctx)
@@ -60,7 +52,6 @@ func NewRelay(ctx context.Context, url string, opts RelayOptions) *Relay {
 		connectionContextCancel:       cancel,
 		Subscriptions:                 xsync.NewMapOf[int64, *Subscription](),
 		okCallbacks:                   xsync.NewMapOf[ID, func(bool, string)](),
-		writeQueue:                    make(chan writeRequest),
 		subscriptionChannelCloseQueue: make(chan *Subscription),
 		requestHeader:                 opts.RequestHeader,
 	}
@@ -103,7 +94,7 @@ func (r *Relay) String() string {
 func (r *Relay) Context() context.Context { return r.connectionContext }

 // IsConnected returns true if the connection to this relay seems to be active.
-func (r *Relay) IsConnected() bool { return r.connectionContext.Err() == nil }
+func (r *Relay) IsConnected() bool { return !r.Connection.closed.Load() }

 // Connect tries to establish a websocket connection to r.URL.
 // If the context expires before the connection is complete, an error is returned.
@@ -128,164 +119,123 @@ func (r *Relay) ConnectWithTLS(ctx context.Context, tlsConfig *tls.Config) error

 	if _, ok := ctx.Deadline(); !ok {
 		// if no timeout is set, force it to 7 seconds
-		var cancel context.CancelFunc
-		ctx, cancel = context.WithTimeoutCause(ctx, 7*time.Second, errors.New("connection took too long"))
-		defer cancel()
+		ctx, _ = context.WithTimeoutCause(ctx, 7*time.Second, errors.New("connection took too long"))
 	}

-	conn, err := NewConnection(ctx, r.URL, r.requestHeader, tlsConfig)
+	conn, err := NewConnection(ctx, r.URL, r.handleMessage, r.requestHeader, tlsConfig)
 	if err != nil {
 		return fmt.Errorf("error opening websocket to '%s': %w", r.URL, err)
 	}
 	r.Connection = conn

-	// ping every 29 seconds
-	ticker := time.NewTicker(29 * time.Second)
-
-	// queue all write operations here so we don't do mutex spaghetti
-	go func() {
-		for {
-			select {
-			case <-r.connectionContext.Done():
-				ticker.Stop()
-				r.Connection = nil
-
-				for _, sub := range r.Subscriptions.Range {
-					sub.unsub(fmt.Errorf("relay connection closed: %w / %w", context.Cause(r.connectionContext), r.ConnectionError))
-				}
-				return
-			case <-ticker.C:
-				err := r.Connection.Ping(r.connectionContext)
-				if err != nil && !strings.Contains(err.Error(), "failed to wait for pong") {
-					InfoLogger.Printf("{%s} error writing ping: %v; closing websocket", r.URL, err)
-					r.Close() // this should trigger a context cancelation
-					return
-				}
-			case writeRequest := <-r.writeQueue:
-				// all write requests will go through this to prevent races
-				debugLogf("{%s} sending %v\n", r.URL, string(writeRequest.msg))
-				if err := r.Connection.WriteMessage(r.connectionContext, writeRequest.msg); err != nil {
-					writeRequest.answer <- err
-				}
-				close(writeRequest.answer)
-			}
-		}
-	}()
-
-	// general message reader loop
-	go func() {
-		buf := new(bytes.Buffer)
-		mp := NewMessageParser()
-
-		for {
-			buf.Reset()
-
-			if err := conn.ReadMessage(r.connectionContext, buf); err != nil {
-				r.ConnectionError = err
-				r.close(err)
-				break
-			}
-
-			message := string(buf.Bytes())
-			debugLogf("{%s} received %v\n", r.URL, message)
-
-			// if this is an "EVENT" we will have this preparser logic that should speed things up a little
-			// as we skip handling duplicate events
-			subid := extractSubID(message)
-			sub, ok := r.Subscriptions.Load(subIdToSerial(subid))
-			if ok {
-				if sub.checkDuplicate != nil {
-					if sub.checkDuplicate(extractEventID(message[10+len(subid):]), r.URL) {
-						continue
-					}
-				} else if sub.checkDuplicateReplaceable != nil {
-					if sub.checkDuplicateReplaceable(
-						ReplaceableKey{extractEventPubKey(message), extractDTag(message)},
-						extractTimestamp(message),
-					) {
-						continue
-					}
-				}
-			}
-
-			envelope, err := mp.ParseMessage(message)
-			if envelope == nil {
-				if r.customHandler != nil && err == UnknownLabel {
-					r.customHandler(message)
-				}
-				continue
-			}
-
-			switch env := envelope.(type) {
-			case *NoticeEnvelope:
-				// see WithNoticeHandler
-				if r.noticeHandler != nil {
-					r.noticeHandler(string(*env))
-				} else {
-					log.Printf("NOTICE from %s: '%s'\n", r.URL, string(*env))
-				}
-			case *AuthEnvelope:
-				if env.Challenge == nil {
-					continue
-				}
-				r.challenge = *env.Challenge
-			case *EventEnvelope:
-				// we already have the subscription from the pre-check above, so we can just reuse it
-				if sub == nil {
-					// InfoLogger.Printf("{%s} no subscription with id '%s'\n", r.URL, *env.SubscriptionID)
-					continue
-				} else {
-					// check if the event matches the desired filter, ignore otherwise
-					if !sub.match(env.Event) {
-						InfoLogger.Printf("{%s} filter does not match: %v ~ %v\n", r.URL, sub.Filter, env.Event)
-						continue
-					}
-
-					// check signature, ignore invalid, except from trusted (AssumeValid) relays
-					if !r.AssumeValid {
-						if !env.Event.VerifySignature() {
-							InfoLogger.Printf("{%s} bad signature on %s\n", r.URL, env.Event.ID)
-							continue
-						}
-					}
-
-					// dispatch this to the internal .events channel of the subscription
-					sub.dispatchEvent(env.Event)
-				}
-			case *EOSEEnvelope:
-				if subscription, ok := r.Subscriptions.Load(subIdToSerial(string(*env))); ok {
-					subscription.dispatchEose()
-				}
-			case *ClosedEnvelope:
-				if subscription, ok := r.Subscriptions.Load(subIdToSerial(env.SubscriptionID)); ok {
-					subscription.handleClosed(env.Reason)
-				}
-			case *CountEnvelope:
-				if subscription, ok := r.Subscriptions.Load(subIdToSerial(env.SubscriptionID)); ok && env.Count != nil && subscription.countResult != nil {
-					subscription.countResult <- *env
-				}
-			case *OKEnvelope:
-				if okCallback, exist := r.okCallbacks.Load(env.EventID); exist {
-					okCallback(env.OK, env.Reason)
-				} else {
-					InfoLogger.Printf("{%s} got an unexpected OK message for event %s", r.URL, env.EventID)
-				}
-			}
-		}
-	}()
-
 	return nil
 }

+func (r *Relay) handleMessage(message string) {
+	// if this is an "EVENT" we will have this preparser logic that should speed things up a little
+	// as we skip handling duplicate events
+	subid := extractSubID(message)
+	sub, ok := r.Subscriptions.Load(subIdToSerial(subid))
+	if ok {
+		if sub.checkDuplicate != nil {
+			if sub.checkDuplicate(extractEventID(message[10+len(subid):]), r.URL) {
+				return
+			}
+		} else if sub.checkDuplicateReplaceable != nil {
+			if sub.checkDuplicateReplaceable(
+				ReplaceableKey{extractEventPubKey(message), extractDTag(message)},
+				extractTimestamp(message),
+			) {
+				return
+			}
+		}
+	}
+
+	envelope, err := ParseMessage(message)
+	if envelope == nil {
+		if r.customHandler != nil && err == UnknownLabel {
+			r.customHandler(message)
+		}
+		return
+	}
+
+	switch env := envelope.(type) {
+	case *NoticeEnvelope:
+		// see WithNoticeHandler
+		if r.noticeHandler != nil {
+			r.noticeHandler(string(*env))
+		} else {
+			log.Printf("NOTICE from %s: '%s'\n", r.URL, string(*env))
+		}
+	case *AuthEnvelope:
+		if env.Challenge == nil {
+			return
+		}
+		r.challenge = *env.Challenge
+	case *EventEnvelope:
+		// we already have the subscription from the pre-check above, so we can just reuse it
+		if sub == nil {
+			// InfoLogger.Printf("{%s} no subscription with id '%s'\n", r.URL, *env.SubscriptionID)
+			return
+		} else {
+			// check if the event matches the desired filter, ignore otherwise
+			if !sub.match(env.Event) {
+				InfoLogger.Printf("{%s} filter does not match: %v ~ %v\n", r.URL, sub.Filter, env.Event)
+				return
+			}
+
+			// check signature, ignore invalid, except from trusted (AssumeValid) relays
+			if !r.AssumeValid {
+				if !env.Event.VerifySignature() {
+					InfoLogger.Printf("{%s} bad signature on %s\n", r.URL, env.Event.ID)
+					return
+				}
+			}
+
+			// dispatch this to the internal .events channel of the subscription
+			sub.dispatchEvent(env.Event)
+		}
+	case *EOSEEnvelope:
+		if subscription, ok := r.Subscriptions.Load(subIdToSerial(string(*env))); ok {
+			subscription.dispatchEose()
+		}
+	case *ClosedEnvelope:
+		if subscription, ok := r.Subscriptions.Load(subIdToSerial(env.SubscriptionID)); ok {
+			subscription.handleClosed(env.Reason)
+		}
+	case *CountEnvelope:
+		if subscription, ok := r.Subscriptions.Load(subIdToSerial(env.SubscriptionID)); ok && env.Count != nil && subscription.countResult != nil {
+			subscription.countResult <- *env
+		}
+	case *OKEnvelope:
+		if okCallback, exist := r.okCallbacks.Load(env.EventID); exist {
+			okCallback(env.OK, env.Reason)
+		} else {
+			InfoLogger.Printf("{%s} got an unexpected OK message for event %s", r.URL, env.EventID)
+		}
+	}
+}
+
 // Write queues an arbitrary message to be sent to the relay.
-func (r *Relay) Write(msg []byte) <-chan error {
+func (r *Relay) Write(msg []byte) {
+	select {
+	case r.Connection.writeQueue <- writeRequest{msg: msg, answer: nil}:
+	case <-r.Connection.closedNotify:
+	case <-r.connectionContext.Done():
+	}
+}
+
+// WriteWithError is like Write, but returns an error if the write fails (and the connection gets closed).
+func (r *Relay) WriteWithError(msg []byte) error {
 	ch := make(chan error)
 	select {
-	case r.writeQueue <- writeRequest{msg: msg, answer: ch}:
+	case r.Connection.writeQueue <- writeRequest{msg: msg, answer: ch}:
+	case <-r.Connection.closedNotify:
+		return fmt.Errorf("failed to write to %s: <closed>", r.URL)
 	case <-r.connectionContext.Done():
-		go func() { ch <- fmt.Errorf("connection closed") }()
+		return fmt.Errorf("failed to write to %s: %w", r.URL, context.Cause(r.connectionContext))
 	}
-	return ch
+	return <-ch
 }

 // Publish sends an "EVENT" command to the relay r as in NIP-01 and waits for an OK response.
@@ -342,7 +292,7 @@ func (r *Relay) publish(ctx context.Context, id ID, env Envelope) error {

 	// publish event
 	envb, _ := env.MarshalJSON()
-	if err := <-r.Write(envb); err != nil {
+	if err := r.WriteWithError(envb); err != nil {
 		return err
 	}

@@ -508,11 +458,6 @@ func (r *Relay) close(reason error) error {
 		return fmt.Errorf("relay not connected")
 	}

-	err := r.Connection.Close()
-	if err != nil {
-		return err
-	}
-
 	return nil
 }

--- a/subscription.go
+++ b/subscription.go
@@ -150,7 +150,7 @@ func (sub *Subscription) Close() {
 	if sub.Relay.IsConnected() {
 		closeMsg := CloseEnvelope(sub.id)
 		closeb, _ := (&closeMsg).MarshalJSON()
-		<-sub.Relay.Write(closeb)
+		sub.Relay.Write(closeb)
 	}
 }

@@ -165,13 +165,13 @@ func (sub *Subscription) Sub(_ context.Context, filter Filter) {
 func (sub *Subscription) Fire() error {
 	var reqb []byte
 	if sub.countResult == nil {
-		reqb, _ = ReqEnvelope{sub.id, sub.Filter}.MarshalJSON()
+		reqb, _ = ReqEnvelope{sub.id, []Filter{sub.Filter}}.MarshalJSON()
 	} else {
 		reqb, _ = CountEnvelope{sub.id, sub.Filter, nil, nil}.MarshalJSON()
 	}

 	sub.live.Store(true)
-	if err := <-sub.Relay.Write(reqb); err != nil {
+	if err := sub.Relay.WriteWithError(reqb); err != nil {
 		err := fmt.Errorf("failed to write: %w", err)
 		sub.cancel(err)
 		return err