bring back RequestAuth(ctx), now as a global.

expose GetSubscriptionID(ctx)
fix writeErr nil pointer.
2026-04-07 22:16:46 +02:00 · 2023-12-25 09:30:13 -03:00 · 2023-12-25 09:14:09 -03:00 · 2023-12-22 22:35:44 -03:00 · 2023-12-22 19:51:35 -03:00 · 2023-12-22 19:50:32 -03:00
16 changed files with 376 additions and 264 deletions
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ func main() {
 	relay.Info.Name = "my relay"
 	relay.Info.PubKey = "79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798"
 	relay.Info.Description = "this is my custom relay"
-	relay.Info.IconURL = "https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fliquipedia.net%2Fcommons%2Fimages%2F3%2F35%2FSCProbe.jpg&f=1&nofb=1&ipt=0cbbfef25bce41da63d910e86c3c343e6c3b9d63194ca9755351bb7c2efa3359&ipo=images"
+	relay.Info.Icon = "https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fliquipedia.net%2Fcommons%2Fimages%2F3%2F35%2FSCProbe.jpg&f=1&nofb=1&ipt=0cbbfef25bce41da63d910e86c3c343e6c3b9d63194ca9755351bb7c2efa3359&ipo=images"

 	// you must bring your own storage scheme -- if you want to have any
 	store := make(map[string]*nostr.Event, 120)
@@ -79,7 +79,7 @@ func main() {
 	relay.OnConnect = append(relay.OnConnect,
 		func(ctx context.Context) {
 			// request NIP-42 AUTH from everybody
-			relay.RequestAuth(ctx)
+			khatru.RequestAuth(ctx)
 		},
 	)
 	relay.OnAuth = append(relay.OnAuth,
--- a/add-event.go
+++ b/add-event.go
@@ -2,6 +2,7 @@ package khatru

 import (
 	"context"
+	"errors"
 	"fmt"

 	"github.com/fiatjaf/eventstore"
@@ -10,15 +11,16 @@ import (

 func (rl *Relay) AddEvent(ctx context.Context, evt *nostr.Event) error {
 	if evt == nil {
-		return fmt.Errorf("event is nil")
+		return errors.New("error: event is nil")
 	}

 	for _, reject := range rl.RejectEvent {
 		if reject, msg := reject(ctx, evt); reject {
 			if msg == "" {
-				msg = "no reason"
+				return errors.New("blocked: no reason")
+			} else {
+				return errors.New(nostr.NormalizeOKMessage(msg, "blocked"))
 			}
-			return fmt.Errorf(msg)
 		}
 	}

@@ -63,12 +65,7 @@ func (rl *Relay) AddEvent(ctx context.Context, evt *nostr.Event) error {
 				case eventstore.ErrDupEvent:
 					return nil
 				default:
-					errmsg := saveErr.Error()
-					if nip20prefixmatcher.MatchString(errmsg) {
-						return saveErr
-					} else {
-						return fmt.Errorf("error: failed to save (%s)", errmsg)
-					}
+					return fmt.Errorf(nostr.NormalizeOKMessage(saveErr.Error(), "error"))
 				}
 			}
 		}
--- a/examples/exclusive/main.go
+++ b/examples/exclusive/main.go
@@ -8,7 +8,7 @@ import (

 	"github.com/fiatjaf/eventstore/lmdb"
 	"github.com/fiatjaf/khatru"
-	"github.com/fiatjaf/khatru/plugins"
+	"github.com/fiatjaf/khatru/policies"
 	"github.com/nbd-wtf/go-nostr"
 )

@@ -26,8 +26,8 @@ func main() {
 	relay.CountEvents = append(relay.CountEvents, db.CountEvents)
 	relay.DeleteEvent = append(relay.DeleteEvent, db.DeleteEvent)

-	relay.RejectEvent = append(relay.RejectEvent, plugins.PreventTooManyIndexableTags(10))
-	relay.RejectFilter = append(relay.RejectFilter, plugins.NoComplexFilters)
+	relay.RejectEvent = append(relay.RejectEvent, policies.PreventTooManyIndexableTags(10, nil, nil))
+	relay.RejectFilter = append(relay.RejectFilter, policies.NoComplexFilters)

 	relay.OnEventSaved = append(relay.OnEventSaved, func(ctx context.Context, event *nostr.Event) {
 	})
--- a/examples/readme-demo/main.go
+++ b/examples/readme-demo/main.go
@@ -60,15 +60,20 @@ func main() {
 			return false, "" // anyone else can
 		},
 	)
-	relay.OnConnect = append(relay.OnConnect,
-		func(ctx context.Context) {
-			// request NIP-42 AUTH from everybody
-			relay.RequestAuth(ctx)
+
+	// you can request auth by rejecting an event or a request with the prefix "auth-required: "
+	relay.RejectFilter = append(relay.RejectFilter,
+		func(ctx context.Context, filter nostr.Filter) (reject bool, msg string) {
+			if pubkey := khatru.GetAuthed(ctx); pubkey != "" {
+				log.Printf("request from %s\n", pubkey)
+				return false, ""
+			}
+			return true, "auth-required: only authenticated users can read from this relay"
 		},
 	)
 	relay.OnAuth = append(relay.OnAuth,
 		func(ctx context.Context, pubkey string) {
-			// and when they auth we just log that for nothing
+			// and when they auth we can just log that for nothing
 			log.Println(pubkey + " is authed!")
 		},
 	)
--- a/go.mod
+++ b/go.mod
@@ -4,17 +4,18 @@ go 1.21.0

 require (
 	github.com/fasthttp/websocket v1.5.3
-	github.com/fiatjaf/eventstore v0.1.0
-	github.com/nbd-wtf/go-nostr v0.25.7
+	github.com/fiatjaf/eventstore v0.3.1
+	github.com/nbd-wtf/go-nostr v0.27.1
 	github.com/puzpuzpuz/xsync/v2 v2.5.1
 	github.com/rs/cors v1.7.0
-	golang.org/x/exp v0.0.0-20230425010034-47ecfdc1ba53
+	github.com/sebest/xff v0.0.0-20210106013422-671bd2870b3a
+	golang.org/x/exp v0.0.0-20231006140011-7918f672742d
 )

 require (
+	github.com/PowerDNS/lmdb-go v1.9.2 // indirect
 	github.com/andybalholm/brotli v1.0.5 // indirect
 	github.com/aquasecurity/esquery v0.2.0 // indirect
-	github.com/bmatsuo/lmdb-go v1.8.0 // indirect
 	github.com/btcsuite/btcd/btcec/v2 v2.3.2 // indirect
 	github.com/btcsuite/btcd/chaincfg/chainhash v1.0.2 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
@@ -22,35 +23,35 @@ require (
 	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect
 	github.com/dgraph-io/badger/v4 v4.2.0 // indirect
 	github.com/dgraph-io/ristretto v0.1.1 // indirect
-	github.com/dustin/go-humanize v1.0.0 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/elastic/elastic-transport-go/v8 v8.3.0 // indirect
-	github.com/elastic/go-elasticsearch/v7 v7.6.0 // indirect
+	github.com/elastic/go-elasticsearch/v7 v7.17.10 // indirect
 	github.com/elastic/go-elasticsearch/v8 v8.10.1 // indirect
 	github.com/fatih/structs v1.1.0 // indirect
 	github.com/gobwas/httphead v0.1.0 // indirect
 	github.com/gobwas/pool v0.2.1 // indirect
-	github.com/gobwas/ws v1.2.0 // indirect
+	github.com/gobwas/ws v1.3.1 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/golang/glog v1.0.0 // indirect
-	github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6 // indirect
-	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/golang/snappy v0.0.3 // indirect
-	github.com/google/flatbuffers v1.12.1 // indirect
+	github.com/golang/glog v1.1.2 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
+	github.com/google/flatbuffers v23.5.26+incompatible // indirect
 	github.com/jmoiron/sqlx v1.3.5 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
-	github.com/klauspost/compress v1.16.5 // indirect
+	github.com/klauspost/compress v1.17.2 // indirect
 	github.com/lib/pq v1.10.9 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
-	github.com/mattn/go-sqlite3 v1.14.17 // indirect
+	github.com/mattn/go-sqlite3 v1.14.18 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/savsgio/gotils v0.0.0-20230208104028-c358bd845dee // indirect
-	github.com/tidwall/gjson v1.14.4 // indirect
+	github.com/tidwall/gjson v1.17.0 // indirect
 	github.com/tidwall/match v1.1.1 // indirect
-	github.com/tidwall/pretty v1.2.0 // indirect
+	github.com/tidwall/pretty v1.2.1 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasthttp v1.47.0 // indirect
-	go.opencensus.io v0.22.5 // indirect
-	golang.org/x/net v0.8.0 // indirect
-	golang.org/x/sys v0.8.0 // indirect
-	google.golang.org/protobuf v1.28.1 // indirect
+	go.opencensus.io v0.24.0 // indirect
+	golang.org/x/net v0.17.0 // indirect
+	golang.org/x/sys v0.14.0 // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
 )
--- a/go.sum
+++ b/go.sum
@@ -1,19 +1,21 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/PowerDNS/lmdb-go v1.9.2 h1:Cmgerh9y3ZKBZGz1irxSShhfmFyRUh+Zdk4cZk7ZJvU=
+github.com/PowerDNS/lmdb-go v1.9.2/go.mod h1:TE0l+EZK8Z1B4dx070ZxkWTlp8RG1mjN0/+FkFRQMtU=
 github.com/andybalholm/brotli v1.0.5 h1:8uQZIdzKmjc/iuPu7O2ioW48L81FgatrcpfFmiq/cCs=
 github.com/andybalholm/brotli v1.0.5/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
 github.com/aquasecurity/esquery v0.2.0 h1:9WWXve95TE8hbm3736WB7nS6Owl8UGDeu+0jiyE9ttA=
 github.com/aquasecurity/esquery v0.2.0/go.mod h1:VU+CIFR6C+H142HHZf9RUkp4Eedpo9UrEKeCQHWf9ao=
-github.com/bmatsuo/lmdb-go v1.8.0 h1:ohf3Q4xjXZBKh4AayUY4bb2CXuhRAI8BYGlJq08EfNA=
-github.com/bmatsuo/lmdb-go v1.8.0/go.mod h1:wWPZmKdOAZsl4qOqkowQ1aCrFie1HU8gWloHMCeAUdM=
 github.com/btcsuite/btcd/btcec/v2 v2.3.2 h1:5n0X6hX0Zk+6omWcihdYvdAlGf2DfasC0GMf7DClJ3U=
 github.com/btcsuite/btcd/btcec/v2 v2.3.2/go.mod h1:zYzJ8etWJQIv1Ogk7OzpWjowwOdXY1W/17j2MW85J04=
 github.com/btcsuite/btcd/chaincfg/chainhash v1.0.2 h1:KdUfX2zKommPRa+PD0sWZUyXe9w277ABlgELO7H04IM=
 github.com/btcsuite/btcd/chaincfg/chainhash v1.0.2/go.mod h1:7SFka0XMvUgj3hfZtydOrQY2mwhPclbT2snogU7SQQc=
+github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
 github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -27,49 +29,70 @@ github.com/dgraph-io/ristretto v0.1.1 h1:6CWw5tJNgpegArSHpNHJKldNeq03FQCwYvfMVWa
 github.com/dgraph-io/ristretto v0.1.1/go.mod h1:S1GPSBCYCIhmVNfcth17y2zZtQT6wzkzgwUve0VDWWA=
 github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2 h1:tdlZCpZ/P9DhczCTSixgIKmwPv6+wP5DGjqLYw5SUiA=
 github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
-github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
+github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
+github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
 github.com/elastic/elastic-transport-go/v8 v8.3.0 h1:DJGxovyQLXGr62e9nDMPSxRyWION0Bh6d9eCFBriiHo=
 github.com/elastic/elastic-transport-go/v8 v8.3.0/go.mod h1:87Tcz8IVNe6rVSLdBux1o/PEItLtyabHU3naC7IoqKI=
-github.com/elastic/go-elasticsearch/v7 v7.6.0 h1:sYpGLpEFHgLUKLsZUBfuaVI9QgHjS3JdH9fX4/z8QI8=
 github.com/elastic/go-elasticsearch/v7 v7.6.0/go.mod h1:OJ4wdbtDNk5g503kvlHLyErCgQwwzmDtaFC4XyOxXA4=
+github.com/elastic/go-elasticsearch/v7 v7.17.10 h1:TCQ8i4PmIJuBunvBS6bwT2ybzVFxxUhhltAs3Gyu1yo=
+github.com/elastic/go-elasticsearch/v7 v7.17.10/go.mod h1:OJ4wdbtDNk5g503kvlHLyErCgQwwzmDtaFC4XyOxXA4=
 github.com/elastic/go-elasticsearch/v8 v8.10.1 h1:JJ3i2DimYTsJcUoEGbg6tNB0eehTNdid9c5kTR1TGuI=
 github.com/elastic/go-elasticsearch/v8 v8.10.1/go.mod h1:GU1BJHO7WeamP7UhuElYwzzHtvf9SDmeVpSSy9+o6Qg=
+github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
+github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/fasthttp/websocket v1.5.3 h1:TPpQuLwJYfd4LJPXvHDYPMFWbLjsT91n3GpWtCQtdek=
 github.com/fasthttp/websocket v1.5.3/go.mod h1:46gg/UBmTU1kUaTcwQXpUxtRwG2PvIZYeA8oL6vF3Fs=
 github.com/fatih/structs v1.1.0 h1:Q7juDM0QtcnhCpeyLGQKyg4TOIghuNXrkL32pHAUMxo=
 github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga6PJ7M=
-github.com/fiatjaf/eventstore v0.1.0 h1:/g7VTw6dsXmjICD3rBuHNIvAammHJ5unrKJ71Dz+VTs=
-github.com/fiatjaf/eventstore v0.1.0/go.mod h1:juMei5HL3HJi6t7vZjj7VdEItDPu31+GLROepdUK4tw=
-github.com/go-sql-driver/mysql v1.6.0 h1:BCTh4TKNUYmOmMUcQ3IipzF5prigylS7XXjEkfCHuOE=
+github.com/fiatjaf/eventstore v0.3.1 h1:GDuF8RxBNL6km9Y7qEucDQbkzKfkPJqoA/YiiIE0wao=
+github.com/fiatjaf/eventstore v0.3.1/go.mod h1:q3r6SuNhCxaSwfnK++2BratEVUcwK2NNr004hLOpz7Q=
 github.com/go-sql-driver/mysql v1.6.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
+github.com/go-sql-driver/mysql v1.7.1 h1:lUIinVbN1DY0xBg0eMOzmmtGoHwWBbvnWubQUrtU8EI=
+github.com/go-sql-driver/mysql v1.7.1/go.mod h1:OXbVy3sEdcQ2Doequ6Z5BW6fXNQTmx+9S1MCJN5yJMI=
 github.com/gobwas/httphead v0.1.0 h1:exrUm0f4YX0L7EBwZHuCF4GDp8aJfVeBrlLQrs6NqWU=
 github.com/gobwas/httphead v0.1.0/go.mod h1:O/RXo79gxV8G+RqlR/otEwx4Q36zl9rqC5u12GKvMCM=
 github.com/gobwas/pool v0.2.1 h1:xfeeEhW7pwmX8nuLVlqbzVc7udMDrwetjEv+TZIz1og=
 github.com/gobwas/pool v0.2.1/go.mod h1:q8bcK0KcYlCgd9e7WYLm9LpyS+YeLd8JVDW6WezmKEw=
-github.com/gobwas/ws v1.2.0 h1:u0p9s3xLYpZCA1z5JgCkMeB34CKCMMQbM+G8Ii7YD0I=
-github.com/gobwas/ws v1.2.0/go.mod h1:hRKAFb8wOxFROYNsT1bqfWnhX+b5MFeJM9r2ZSwg/KY=
+github.com/gobwas/ws v1.3.1 h1:Qi34dfLMWJbiKaNbDVzM9x27nZBjmkaW6i4+Ku+pGVU=
+github.com/gobwas/ws v1.3.1/go.mod h1:hRKAFb8wOxFROYNsT1bqfWnhX+b5MFeJM9r2ZSwg/KY=
 github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
 github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/glog v1.0.0 h1:nfP3RFugxnNRyKgeWd4oI1nYvXpxrx8ck8ZrcizshdQ=
-github.com/golang/glog v1.0.0/go.mod h1:EWib/APOK0SL3dFbYqvxE3UYd8E6s1ouQ7iEp/0LWV4=
-github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6 h1:ZgQEtGgCBiWRM39fZuwSd1LwSqqSW0hOdXCYYDX0R3I=
-github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/golang/glog v1.1.2 h1:DVjP2PbBOzHyzA+dn3WhHIq4NdVu3Q+pvivFICf/7fo=
+github.com/golang/glog v1.1.2/go.mod h1:zR+okUeTbrL6EL3xHUDxZuEtGv04p5shwip1+mL/rLQ=
+github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l8iNU+DwB5epxmsaqB+rhGL0m5jtYqE=
+github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
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 golang.org/x/sys v0.0.0-20221010170243-090e33056c14/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
-golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.14.0 h1:Vz7Qs629MkJkGyHxUlRHizWJRG2j8fbQKjELVSNhy7Q=
+golang.org/x/sys v0.14.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
@@ -173,15 +205,30 @@ golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8T
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
-google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
+google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
+google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
-google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
+google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
+google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
+google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
+google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc=
+google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
+google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
+google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
+google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
+google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
-google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
+google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
--- a/handlers.go
+++ b/handlers.go
@@ -6,6 +6,7 @@ import (
 	"crypto/sha256"
 	"encoding/hex"
 	"encoding/json"
+	"errors"
 	"net/http"
 	"strings"
 	"sync"
@@ -14,22 +15,25 @@ import (
 	"github.com/fasthttp/websocket"
 	"github.com/nbd-wtf/go-nostr"
 	"github.com/nbd-wtf/go-nostr/nip42"
+	"github.com/rs/cors"
 )

 // ServeHTTP implements http.Handler interface.
 func (rl *Relay) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if rl.ServiceURL == "" {
+		rl.ServiceURL = getServiceBaseURL(r)
+	}
+
 	if r.Header.Get("Upgrade") == "websocket" {
 		rl.HandleWebsocket(w, r)
 	} else if r.Header.Get("Accept") == "application/nostr+json" {
-		rl.HandleNIP11(w, r)
+		cors.AllowAll().Handler(http.HandlerFunc(rl.HandleNIP11)).ServeHTTP(w, r)
 	} else {
 		rl.serveMux.ServeHTTP(w, r)
 	}
 }

 func (rl *Relay) HandleWebsocket(w http.ResponseWriter, r *http.Request) {
-	ctx := r.Context()
-
 	conn, err := rl.upgrader.Upgrade(w, r, nil)
 	if err != nil {
 		rl.Log.Printf("failed to upgrade websocket: %v\n", err)
@@ -43,21 +47,35 @@ func (rl *Relay) HandleWebsocket(w http.ResponseWriter, r *http.Request) {
 	rand.Read(challenge)

 	ws := &WebSocket{
-		conn:           conn,
-		Challenge:      hex.EncodeToString(challenge),
-		WaitingForAuth: make(chan struct{}),
+		conn:      conn,
+		Request:   r,
+		Challenge: hex.EncodeToString(challenge),
+		Authed:    make(chan struct{}),
+	}
+
+	ctx, cancel := context.WithCancel(
+		context.WithValue(
+			context.Background(),
+			wsKey, ws,
+		),
+	)
+
+	kill := func() {
+		for _, ondisconnect := range rl.OnDisconnect {
+			ondisconnect(ctx)
+		}
+
+		ticker.Stop()
+		cancel()
+		if _, ok := rl.clients.Load(conn); ok {
+			conn.Close()
+			rl.clients.Delete(conn)
+			removeListener(ws)
+		}
 	}

-	// reader
 	go func() {
-		defer func() {
-			ticker.Stop()
-			if _, ok := rl.clients.Load(conn); ok {
-				conn.Close()
-				rl.clients.Delete(conn)
-				removeListener(ws)
-			}
-		}()
+		defer kill()

 		conn.SetReadLimit(rl.MaxMessageSize)
 		conn.SetReadDeadline(time.Now().Add(rl.PongWait))
@@ -75,13 +93,14 @@ func (rl *Relay) HandleWebsocket(w http.ResponseWriter, r *http.Request) {
 			if err != nil {
 				if websocket.IsUnexpectedCloseError(
 					err,
+					websocket.CloseNormalClosure,    // 1000
 					websocket.CloseGoingAway,        // 1001
 					websocket.CloseNoStatusReceived, // 1005
 					websocket.CloseAbnormalClosure,  // 1006
 				) {
 					rl.Log.Printf("unexpected close error from %s: %v\n", r.Header.Get("X-Forwarded-For"), err)
 				}
-				break
+				return
 			}

 			if typ == websocket.PingMessage {
@@ -90,152 +109,118 @@ func (rl *Relay) HandleWebsocket(w http.ResponseWriter, r *http.Request) {
 			}

 			go func(message []byte) {
-				ctx = context.Background()
-
-				var request []json.RawMessage
-				if err := json.Unmarshal(message, &request); err != nil {
+				envelope := nostr.ParseMessage(message)
+				if envelope == nil {
 					// stop silently
 					return
 				}

-				if len(request) < 2 {
-					ws.WriteJSON(nostr.NoticeEnvelope("request has less than 2 parameters"))
-					return
-				}
-
-				var typ string
-				json.Unmarshal(request[0], &typ)
-
-				switch typ {
-				case "EVENT":
-					// it's a new event
-					var evt nostr.Event
-					if err := json.Unmarshal(request[1], &evt); err != nil {
-						ws.WriteJSON(nostr.NoticeEnvelope("failed to decode event: " + err.Error()))
+				switch env := envelope.(type) {
+				case *nostr.EventEnvelope:
+					// check id
+					hash := sha256.Sum256(env.Event.Serialize())
+					id := hex.EncodeToString(hash[:])
+					if id != env.Event.ID {
+						ws.WriteJSON(nostr.OKEnvelope{EventID: env.Event.ID, OK: false, Reason: "invalid: id is computed incorrectly"})
 						return
 					}

-					// check serialization
-					serialized := evt.Serialize()
-
-					// assign ID
-					hash := sha256.Sum256(serialized)
-					evt.ID = hex.EncodeToString(hash[:])
-
-					// check signature (requires the ID to be set)
-					if ok, err := evt.CheckSignature(); err != nil {
-						ws.WriteJSON(nostr.OKEnvelope{EventID: evt.ID, OK: false, Reason: "error: failed to verify signature"})
+					// check signature
+					if ok, err := env.Event.CheckSignature(); err != nil {
+						ws.WriteJSON(nostr.OKEnvelope{EventID: env.Event.ID, OK: false, Reason: "error: failed to verify signature"})
 						return
 					} else if !ok {
-						ws.WriteJSON(nostr.OKEnvelope{EventID: evt.ID, OK: false, Reason: "invalid: signature is invalid"})
+						ws.WriteJSON(nostr.OKEnvelope{EventID: env.Event.ID, OK: false, Reason: "invalid: signature is invalid"})
 						return
 					}

 					var ok bool
-					if evt.Kind == 5 {
-						err = rl.handleDeleteRequest(ctx, &evt)
+					var writeErr error
+					if env.Event.Kind == 5 {
+						// this always returns "blocked: " whenever it returns an error
+						writeErr = rl.handleDeleteRequest(ctx, &env.Event)
 					} else {
-						err = rl.AddEvent(ctx, &evt)
+						// this will also always return a prefixed reason
+						writeErr = rl.AddEvent(ctx, &env.Event)
 					}

 					var reason string
-					if err == nil {
+					if writeErr == nil {
 						ok = true
 					} else {
-						reason = err.Error()
+						reason = writeErr.Error()
+						if strings.HasPrefix(reason, "auth-required:") {
+							RequestAuth(ctx)
+						}
 					}
-					ws.WriteJSON(nostr.OKEnvelope{EventID: evt.ID, OK: ok, Reason: reason})
-				case "COUNT":
+					ws.WriteJSON(nostr.OKEnvelope{EventID: env.Event.ID, OK: ok, Reason: reason})
+				case *nostr.CountEnvelope:
 					if rl.CountEvents == nil {
-						ws.WriteJSON(nostr.NoticeEnvelope("this relay does not support NIP-45"))
+						ws.WriteJSON(nostr.ClosedEnvelope{SubscriptionID: env.SubscriptionID, Reason: "unsupported: this relay does not support NIP-45"})
 						return
 					}
-
-					var id string
-					json.Unmarshal(request[1], &id)
-					if id == "" {
-						ws.WriteJSON(nostr.NoticeEnvelope("COUNT has no <id>"))
-						return
-					}
-
 					var total int64
-					filters := make(nostr.Filters, len(request)-2)
-					for i, filterReq := range request[2:] {
-						if err := json.Unmarshal(filterReq, &filters[i]); err != nil {
-							ws.WriteJSON(nostr.NoticeEnvelope("failed to decode filter"))
-							continue
-						}
-						total += rl.handleCountRequest(ctx, ws, filters[i])
+					for _, filter := range env.Filters {
+						total += rl.handleCountRequest(ctx, ws, filter)
 					}
-
-					ws.WriteJSON([]interface{}{"COUNT", id, map[string]int64{"count": total}})
-				case "REQ":
-					var id string
-					json.Unmarshal(request[1], &id)
-					if id == "" {
-						ws.WriteJSON(nostr.NoticeEnvelope("REQ has no <id>"))
-						return
-					}
-
-					filters := make(nostr.Filters, len(request)-2)
+					ws.WriteJSON(nostr.CountEnvelope{SubscriptionID: env.SubscriptionID, Count: &total})
+				case *nostr.ReqEnvelope:
 					eose := sync.WaitGroup{}
-					eose.Add(len(request[2:]))
+					eose.Add(len(env.Filters))

-					for i, filterReq := range request[2:] {
-						if err := json.Unmarshal(filterReq, &filters[i]); err != nil {
-							ws.WriteJSON(nostr.NoticeEnvelope("failed to decode filter"))
-							eose.Done()
-							continue
+					// a context just for the "stored events" request handler
+					reqCtx, cancelReqCtx := context.WithCancelCause(ctx)
+
+					// expose subscription id in the context
+					reqCtx = context.WithValue(reqCtx, subscriptionIdKey, env.SubscriptionID)
+
+					// handle each filter separately -- dispatching events as they're loaded from databases
+					for _, filter := range env.Filters {
+						err := rl.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
 						}
-
-						go rl.handleRequest(ctx, id, &eose, ws, filters[i])
 					}

 					go func() {
+						// when all events have been loaded from databases and dispatched
+						// we can cancel the context and fire the EOSE message
 						eose.Wait()
-						ws.WriteJSON(nostr.EOSEEnvelope(id))
+						cancelReqCtx(nil)
+						ws.WriteJSON(nostr.EOSEEnvelope(env.SubscriptionID))
 					}()

-					setListener(id, ws, filters)
-				case "CLOSE":
-					var id string
-					json.Unmarshal(request[1], &id)
-					if id == "" {
-						ws.WriteJSON(nostr.NoticeEnvelope("CLOSE has no <id>"))
-						return
-					}
-
-					removeListenerId(ws, id)
-				case "AUTH":
-					if rl.ServiceURL != "" {
-						var evt nostr.Event
-						if err := json.Unmarshal(request[1], &evt); err != nil {
-							ws.WriteJSON(nostr.NoticeEnvelope("failed to decode auth event: " + err.Error()))
-							return
-						}
-						if pubkey, ok := nip42.ValidateAuthEvent(&evt, ws.Challenge, rl.ServiceURL); ok {
-							ws.Authed = pubkey
-							close(ws.WaitingForAuth)
-							ctx = context.WithValue(ctx, AUTH_CONTEXT_KEY, pubkey)
-							ws.WriteJSON(nostr.OKEnvelope{EventID: evt.ID, OK: true})
-						} else {
-							ws.WriteJSON(nostr.OKEnvelope{EventID: evt.ID, OK: false, Reason: "error: failed to authenticate"})
-						}
+					setListener(env.SubscriptionID, ws, env.Filters, cancelReqCtx)
+				case *nostr.CloseEnvelope:
+					removeListenerId(ws, string(*env))
+				case *nostr.AuthEnvelope:
+					wsBaseUrl := strings.Replace(rl.ServiceURL, "http", "ws", 1)
+					if pubkey, ok := nip42.ValidateAuthEvent(&env.Event, ws.Challenge, wsBaseUrl); ok {
+						ws.AuthedPublicKey = pubkey
+						close(ws.Authed)
+						ws.WriteJSON(nostr.OKEnvelope{EventID: env.Event.ID, OK: true})
+					} else {
+						ws.WriteJSON(nostr.OKEnvelope{EventID: env.Event.ID, OK: false, Reason: "error: failed to authenticate"})
 					}
 				}
 			}(message)
 		}
 	}()

-	// writer
 	go func() {
-		defer func() {
-			ticker.Stop()
-			conn.Close()
-		}()
+		defer kill()

 		for {
 			select {
+			case <-ctx.Done():
+				return
 			case <-ticker.C:
 				err := ws.WriteMessage(websocket.PingMessage, nil)
 				if err != nil {
@@ -251,5 +236,11 @@ func (rl *Relay) HandleWebsocket(w http.ResponseWriter, r *http.Request) {

 func (rl *Relay) HandleNIP11(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/nostr+json")
-	json.NewEncoder(w).Encode(rl.Info)
+
+	info := *rl.Info
+	for _, ovw := range rl.OverwriteRelayInformation {
+		info = ovw(r.Context(), r, info)
+	}
+
+	json.NewEncoder(w).Encode(info)
 }
--- a/helpers.go
+++ b/helpers.go
@@ -0,0 +1,42 @@
+package khatru
+
+import (
+	"hash/maphash"
+	"net/http"
+	"strconv"
+	"strings"
+	"unsafe"
+
+	"github.com/nbd-wtf/go-nostr"
+)
+
+func pointerHasher[V any](_ maphash.Seed, k *V) uint64 {
+	return uint64(uintptr(unsafe.Pointer(k)))
+}
+
+func isOlder(previous, next *nostr.Event) bool {
+	return previous.CreatedAt < next.CreatedAt ||
+		(previous.CreatedAt == next.CreatedAt && previous.ID > next.ID)
+}
+
+func getServiceBaseURL(r *http.Request) string {
+	host := r.Header.Get("X-Forwarded-Host")
+	if host == "" {
+		host = r.Host
+	}
+	proto := r.Header.Get("X-Forwarded-Proto")
+	if proto == "" {
+		if host == "localhost" {
+			proto = "http"
+		} else if strings.Index(host, ":") != -1 {
+			// has a port number
+			proto = "http"
+		} else if _, err := strconv.Atoi(strings.ReplaceAll(host, ".", "")); err == nil {
+			// it's a naked IP
+			proto = "http"
+		} else {
+			proto = "https"
+		}
+	}
+	return proto + "://" + host
+}
--- a/listener.go
+++ b/listener.go
@@ -1,12 +1,16 @@
 package khatru

 import (
+	"context"
+	"fmt"
+
 	"github.com/nbd-wtf/go-nostr"
 	"github.com/puzpuzpuz/xsync/v2"
 )

 type Listener struct {
 	filters nostr.Filters
+	cancel  context.CancelCauseFunc
 }

 var listeners = xsync.NewTypedMapOf[*WebSocket, *xsync.MapOf[string, *Listener]](pointerHasher[WebSocket])
@@ -43,24 +47,28 @@ func GetListeningFilters() nostr.Filters {
 	return respfilters
 }

-func setListener(id string, ws *WebSocket, filters nostr.Filters) {
+func setListener(id string, ws *WebSocket, filters nostr.Filters, cancel context.CancelCauseFunc) {
 	subs, _ := listeners.LoadOrCompute(ws, func() *xsync.MapOf[string, *Listener] {
 		return xsync.NewMapOf[*Listener]()
 	})
-	subs.Store(id, &Listener{filters: filters})
+	subs.Store(id, &Listener{filters: filters, cancel: cancel})
 }

-// Remove a specific subscription id from listeners for a given ws client
+// remove a specific subscription id from listeners for a given ws client
+// and cancel its specific context
 func removeListenerId(ws *WebSocket, id string) {
 	if subs, ok := listeners.Load(ws); ok {
-		subs.Delete(id)
+		if listener, ok := subs.LoadAndDelete(id); ok {
+			listener.cancel(fmt.Errorf("subscription closed by client"))
+		}
 		if subs.Size() == 0 {
 			listeners.Delete(ws)
 		}
 	}
 }

-// Remove WebSocket conn from listeners
+// remove WebSocket conn from listeners
+// (no need to cancel contexts as they are all inherited from the main connection context)
 func removeListener(ws *WebSocket) {
 	listeners.Delete(ws)
 }
--- a/policies/events.go
+++ b/policies/events.go
@@ -1,4 +1,4 @@
-package plugins
+package policies

 import (
 	"context"
@@ -64,9 +64,7 @@ func PreventLargeTags(maxTagValueLen int) func(context.Context, *nostr.Event) (b
 func RestrictToSpecifiedKinds(kinds ...uint16) func(context.Context, *nostr.Event) (bool, string) {
 	max := 0
 	min := 0
-	allowed := make(map[uint16]struct{}, len(kinds))
 	for _, kind := range kinds {
-		allowed[kind] = struct{}{}
 		if int(kind) > max {
 			max = int(kind)
 		}
@@ -86,7 +84,7 @@ func RestrictToSpecifiedKinds(kinds ...uint16) func(context.Context, *nostr.Even
 		}

 		// hopefully this map of uint16s is very fast
-		if _, allowed := allowed[uint16(event.Kind)]; allowed {
+		if _, allowed := slices.BinarySearch(kinds, uint16(event.Kind)); allowed {
 			return false, ""
 		}
 		return true, "event kind not allowed"
--- a/policies/filters.go
+++ b/policies/filters.go
@@ -1,4 +1,4 @@
-package plugins
+package policies

 import (
 	"context"
@@ -7,6 +7,7 @@ import (
 	"golang.org/x/exp/slices"
 )

+// NoComplexFilters disallows filters with more than 2 tags.
 func NoComplexFilters(ctx context.Context, filter nostr.Filter) (reject bool, msg string) {
 	items := len(filter.Tags) + len(filter.Kinds)

@@ -17,6 +18,7 @@ func NoComplexFilters(ctx context.Context, filter nostr.Filter) (reject bool, ms
 	return false, ""
 }

+// NoEmptyFilters disallows filters that don't have at least a tag, a kind, an author or an id.
 func NoEmptyFilters(ctx context.Context, filter nostr.Filter) (reject bool, msg string) {
 	c := len(filter.Kinds) + len(filter.IDs) + len(filter.Authors)
 	for _, tagItems := range filter.Tags {
@@ -28,6 +30,13 @@ func NoEmptyFilters(ctx context.Context, filter nostr.Filter) (reject bool, msg
 	return false, ""
 }

+// AntiSyncBots tries to prevent people from syncing kind:1s from this relay to else by always
+// requiring an author parameter at least.
+func AntiSyncBots(ctx context.Context, filter nostr.Filter) (reject bool, msg string) {
+	return (len(filter.Kinds) == 0 || slices.Contains(filter.Kinds, 1)) &&
+		len(filter.Authors) == 0, "an author must be specified to get their kind:1 notes"
+}
+
 func NoSearchQueries(ctx context.Context, filter nostr.Filter) (reject bool, msg string) {
 	if filter.Search != "" {
 		return true, "search is not supported"
--- a/policies/nip04.go
+++ b/policies/nip04.go
@@ -1,4 +1,4 @@
-package plugins
+package policies

 import (
 	"context"
@@ -8,7 +8,8 @@ import (
 	"golang.org/x/exp/slices"
 )

-func rejectKind04Snoopers(ctx context.Context, filter nostr.Filter) (bool, string) {
+// RejectKind04Snoopers prevents reading NIP-04 messages from people not involved in the conversation.
+func RejectKind04Snoopers(ctx context.Context, filter nostr.Filter) (bool, string) {
 	// prevent kind-4 events from being returned to unauthed users,
 	//   only when authentication is a thing
 	if !slices.Contains(filter.Kinds, 4) {
@@ -19,13 +20,13 @@ func rejectKind04Snoopers(ctx context.Context, filter nostr.Filter) (bool, strin
 	senders := filter.Authors
 	receivers, _ := filter.Tags["p"]
 	switch {
-	case ws.Authed == "":
+	case ws.AuthedPublicKey == "":
 		// not authenticated
 		return true, "restricted: this relay does not serve kind-4 to unauthenticated users, does your client implement NIP-42?"
-	case len(senders) == 1 && len(receivers) < 2 && (senders[0] == ws.Authed):
+	case len(senders) == 1 && len(receivers) < 2 && (senders[0] == ws.AuthedPublicKey):
 		// allowed filter: ws.authed is sole sender (filter specifies one or all receivers)
 		return false, ""
-	case len(receivers) == 1 && len(senders) < 2 && (receivers[0] == ws.Authed):
+	case len(receivers) == 1 && len(senders) < 2 && (receivers[0] == ws.AuthedPublicKey):
 		// allowed filter: ws.authed is sole receiver (filter specifies one or all senders)
 		return false, ""
 	default:
--- a/relay.go
+++ b/relay.go
@@ -18,8 +18,9 @@ func NewRelay() *Relay {
 		Log: log.New(os.Stderr, "[khatru-relay] ", log.LstdFlags),

 		Info: &nip11.RelayInformationDocument{
-			Software: "https://github.com/fiatjaf/khatru",
-			Version:  "n/a",
+			Software:      "https://github.com/fiatjaf/khatru",
+			Version:       "n/a",
+			SupportedNIPs: make([]int, 0),
 		},

 		upgrader: websocket.Upgrader{
@@ -39,22 +40,24 @@ func NewRelay() *Relay {
 }

 type Relay struct {
-	ServiceURL string // required for nip-42
+	ServiceURL string

-	RejectEvent              []func(ctx context.Context, event *nostr.Event) (reject bool, msg string)
-	RejectFilter             []func(ctx context.Context, filter nostr.Filter) (reject bool, msg string)
-	RejectCountFilter        []func(ctx context.Context, filter nostr.Filter) (reject bool, msg string)
-	OverwriteDeletionOutcome []func(ctx context.Context, target *nostr.Event, deletion *nostr.Event) (acceptDeletion bool, msg string)
-	OverwriteResponseEvent   []func(ctx context.Context, event *nostr.Event)
-	OverwriteFilter          []func(ctx context.Context, filter *nostr.Filter)
-	OverwriteCountFilter     []func(ctx context.Context, filter *nostr.Filter)
-	StoreEvent               []func(ctx context.Context, event *nostr.Event) error
-	DeleteEvent              []func(ctx context.Context, event *nostr.Event) error
-	QueryEvents              []func(ctx context.Context, filter nostr.Filter) (chan *nostr.Event, error)
-	CountEvents              []func(ctx context.Context, filter nostr.Filter) (int64, error)
-	OnAuth                   []func(ctx context.Context, pubkey string)
-	OnConnect                []func(ctx context.Context)
-	OnEventSaved             []func(ctx context.Context, event *nostr.Event)
+	RejectEvent               []func(ctx context.Context, event *nostr.Event) (reject bool, msg string)
+	RejectFilter              []func(ctx context.Context, filter nostr.Filter) (reject bool, msg string)
+	RejectCountFilter         []func(ctx context.Context, filter nostr.Filter) (reject bool, msg string)
+	OverwriteDeletionOutcome  []func(ctx context.Context, target *nostr.Event, deletion *nostr.Event) (acceptDeletion bool, msg string)
+	OverwriteResponseEvent    []func(ctx context.Context, event *nostr.Event)
+	OverwriteFilter           []func(ctx context.Context, filter *nostr.Filter)
+	OverwriteCountFilter      []func(ctx context.Context, filter *nostr.Filter)
+	OverwriteRelayInformation []func(ctx context.Context, r *http.Request, info nip11.RelayInformationDocument) nip11.RelayInformationDocument
+	StoreEvent                []func(ctx context.Context, event *nostr.Event) error
+	DeleteEvent               []func(ctx context.Context, event *nostr.Event) error
+	QueryEvents               []func(ctx context.Context, filter nostr.Filter) (chan *nostr.Event, error)
+	CountEvents               []func(ctx context.Context, filter nostr.Filter) (int64, error)
+	OnAuth                    []func(ctx context.Context, pubkey string)
+	OnConnect                 []func(ctx context.Context)
+	OnDisconnect              []func(ctx context.Context)
+	OnEventSaved              []func(ctx context.Context, event *nostr.Event)

 	// editing info will affect
 	Info *nip11.RelayInformationDocument
@@ -80,8 +83,3 @@ type Relay struct {
 	PingPeriod     time.Duration // Send pings to peer with this period. Must be less than pongWait.
 	MaxMessageSize int64         // Maximum message size allowed from peer.
 }
-
-func (rl *Relay) RequestAuth(ctx context.Context) {
-	ws := GetConnection(ctx)
-	ws.WriteJSON(nostr.AuthEnvelope{Challenge: &ws.Challenge})
-}
--- a/serve-req.go
+++ b/serve-req.go
@@ -2,12 +2,13 @@ package khatru

 import (
 	"context"
+	"errors"
 	"sync"

 	"github.com/nbd-wtf/go-nostr"
 )

-func (rl *Relay) handleRequest(ctx context.Context, id string, eose *sync.WaitGroup, ws *WebSocket, filter nostr.Filter) {
+func (rl *Relay) handleRequest(ctx context.Context, id string, eose *sync.WaitGroup, ws *WebSocket, filter nostr.Filter) error {
 	defer eose.Done()

 	// overwrite the filter (for example, to eliminate some kinds or
@@ -17,7 +18,7 @@ func (rl *Relay) handleRequest(ctx context.Context, id string, eose *sync.WaitGr
 	}

 	if filter.Limit < 0 {
-		return
+		return errors.New("blocked: filter invalidated")
 	}

 	// then check if we'll reject this filter (we apply this after overwriting
@@ -27,7 +28,7 @@ func (rl *Relay) handleRequest(ctx context.Context, id string, eose *sync.WaitGr
 	for _, reject := range rl.RejectFilter {
 		if reject, msg := reject(ctx, filter); reject {
 			ws.WriteJSON(nostr.NoticeEnvelope(msg))
-			return
+			return errors.New(nostr.NormalizeOKMessage(msg, "blocked"))
 		}
 	}

@@ -52,6 +53,8 @@ func (rl *Relay) handleRequest(ctx context.Context, id string, eose *sync.WaitGr
 			eose.Done()
 		}(ch)
 	}
+
+	return nil
 }

 func (rl *Relay) handleCountRequest(ctx context.Context, ws *WebSocket, filter nostr.Filter) int64 {
--- a/utils.go
+++ b/utils.go
@@ -2,37 +2,45 @@ package khatru

 import (
 	"context"
-	"hash/maphash"
-	"regexp"
-	"unsafe"

 	"github.com/nbd-wtf/go-nostr"
+	"github.com/sebest/xff"
 )

 const (
-	AUTH_CONTEXT_KEY = iota
-	WS_KEY           = iota
+	wsKey = iota
+	subscriptionIdKey
 )

-var nip20prefixmatcher = regexp.MustCompile(`^\w+: `)
+func RequestAuth(ctx context.Context) {
+	ws := GetConnection(ctx)
+	ws.WriteJSON(nostr.AuthEnvelope{Challenge: &ws.Challenge})
+}

 func GetConnection(ctx context.Context) *WebSocket {
-	return ctx.Value(WS_KEY).(*WebSocket)
+	return ctx.Value(wsKey).(*WebSocket)
 }

 func GetAuthed(ctx context.Context) string {
-	authedPubkey := ctx.Value(AUTH_CONTEXT_KEY)
-	if authedPubkey == nil {
-		return ""
+	return GetConnection(ctx).AuthedPublicKey
+}
+
+func GetIP(ctx context.Context) string {
+	return xff.GetRemoteAddr(GetConnection(ctx).Request)
+}
+
+func GetSubscriptionID(ctx context.Context) string {
+	return ctx.Value(subscriptionIdKey).(string)
+}
+
+func GetOpenSubscriptions(ctx context.Context) []nostr.Filter {
+	if subs, ok := listeners.Load(GetConnection(ctx)); ok {
+		res := make([]nostr.Filter, 0, listeners.Size()*2)
+		subs.Range(func(_ string, sub *Listener) bool {
+			res = append(res, sub.filters...)
+			return true
+		})
+		return res
 	}
-	return authedPubkey.(string)
-}
-
-func pointerHasher[V any](_ maphash.Seed, k *V) uint64 {
-	return uint64(uintptr(unsafe.Pointer(k)))
-}
-
-func isOlder(previous, next *nostr.Event) bool {
-	return previous.CreatedAt < next.CreatedAt ||
-		(previous.CreatedAt == next.CreatedAt && previous.ID > next.ID)
+	return nil
 }
--- a/websocket.go
+++ b/websocket.go
@@ -1,6 +1,7 @@
 package khatru

 import (
+	"net/http"
 	"sync"

 	"github.com/fasthttp/websocket"
@@ -10,10 +11,13 @@ type WebSocket struct {
 	conn  *websocket.Conn
 	mutex sync.Mutex

+	// original request
+	Request *http.Request
+
 	// nip42
-	Challenge      string
-	Authed         string
-	WaitingForAuth chan struct{}
+	Challenge       string
+	AuthedPublicKey string
+	Authed          chan struct{}
 }

 func (ws *WebSocket) WriteJSON(any any) error {
Author	SHA1	Message	Date
fiatjaf	5b17786273	bring back RequestAuth(ctx), now as a global.	2023-12-25 09:30:13 -03:00
fiatjaf	77600dc05c	expose GetSubscriptionID(ctx)	2023-12-25 09:14:09 -03:00
fiatjaf	9f635e4e41	fix writeErr nil pointer.	2023-12-22 22:35:44 -03:00
fiatjaf	9b22ea3ee6	fail properly when a storage function errors and other fixes related to prefixed reason messages.	2023-12-22 19:51:35 -03:00
fiatjaf	08a527f9d8	upgrade eventstore dependency.	2023-12-22 19:50:32 -03:00
fiatjaf	7e06629953	superficial tweaks to auth handling.	2023-12-09 14:41:54 -03:00
fiatjaf	3ec0020baa	add OnDisconnect() handlers.	2023-12-09 09:00:11 -03:00
fiatjaf	d3a0c545d2	GetIP() and GetOpenSubscriptions() utils.	2023-12-09 08:19:37 -03:00
fiatjaf	c09d21b621	clarity: break->return	2023-12-09 00:14:08 -03:00
fiatjaf	5823515d27	streamlined connection closes on failure. account for the fact that the time.Ticker channel is not closed when the ticker is stopped.	2023-12-09 00:00:22 -03:00
fiatjaf	9273a4b809	use a special context for each REQ stored-events handler that can be canceled.	2023-12-08 23:48:30 -03:00
fiatjaf	ddfc9ab64a	fun with connection contexts and context cancelations.	2023-12-08 22:51:00 -03:00
fiatjaf	375236cfe2	fix sign on error checking.	2023-12-06 21:32:48 -03:00
fiatjaf	35e801379a	make NIP-42 actually work, with inferred ServiceURL if that's not manually set.	2023-12-06 15:03:53 -03:00
fiatjaf	22da06b629	new flow for auth based on "auth-required: " rejection messages.	2023-12-06 12:14:58 -03:00
fiatjaf	7bfde76ab1	example fix.	2023-12-06 12:14:27 -03:00
fiatjaf	ad92d0b051	return CLOSED if any of the filters get rejected.	2023-12-06 11:56:56 -03:00
fiatjaf	728417852e	fix nip04 policy.	2023-11-29 12:30:18 -03:00
fiatjaf	3c1b062eb8	include original http.Request in WebSocket struct.	2023-11-29 12:26:04 -03:00
fiatjaf	84d01dc1d3	rename auth-related fields on WebSocket struct.	2023-11-29 12:23:21 -03:00
fiatjaf	888ac8c1c0	use updated released go-nostr.	2023-11-29 12:23:02 -03:00
fiatjaf	e1fd6aaa56	update examples plugins->policies	2023-11-29 12:22:37 -03:00
fiatjaf	386a89676a	use go-nostr envelopes and support CLOSED when filters are rejected.	2023-11-28 22:43:06 -03:00
fiatjaf	90697ad3d3	OverwriteRelayInformation	2023-11-27 00:54:45 -03:00
fiatjaf	8c8a435a0b	ensure supported_nips is always a list, even if empty.	2023-11-23 19:37:01 -03:00
fiatjaf	d608c67791	store websocket object under WS_KEY at the connection context.	2023-11-23 19:36:46 -03:00
fiatjaf	c0069f1e1b	fix example in readme.	2023-11-23 19:36:20 -03:00
fiatjaf	7a221cf9f0	add missing return when checking id.	2023-11-22 17:30:34 -03:00
fiatjaf	194ec994d7	rename plugins to policies.	2023-11-22 17:11:05 -03:00
fiatjaf	d592bd95a9	AntiSyncBots policy.	2023-11-22 17:10:11 -03:00
fiatjaf	2edf754907	cors.	2023-11-20 09:07:52 -03:00
fiatjaf	18e4904a00	check id before signature and do not allow invalid ids.	2023-11-19 16:40:29 -03:00
fiatjaf	591b49fe73	do not log on normal websocket close.	2023-11-19 08:30:06 -03:00
fiatjaf	5db3b5fb8b	use binary search in RestrictToSpecifiedKinds()	2023-11-18 23:23:01 -03:00