├── .gitignore ├── LICENSE.txt ├── Makefile ├── README.md ├── config.go ├── example.config.yaml ├── go.mod ├── go.sum ├── handlers.go ├── logger.go ├── main.go └── store.go /.gitignore: -------------------------------------------------------------------------------- 1 | bin/ 2 | config.yaml 3 | *db/ 4 | -------------------------------------------------------------------------------- /LICENSE.txt: -------------------------------------------------------------------------------- 1 | GNU AFFERO GENERAL PUBLIC LICENSE 2 | Version 3, 19 November 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU Affero General Public License is a free, copyleft license for 11 | software and other kinds of works, specifically designed to ensure 12 | cooperation with the community in the case of network server software. 13 | 14 | The licenses for most software and other practical works are designed 15 | to take away your freedom to share and change the works. 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It is safest 628 | to attach them to the start of each source file to most effectively 629 | state the exclusion of warranty; and each file should have at least 630 | the "copyright" line and a pointer to where the full notice is found. 631 | 632 | 633 | Copyright (C) 634 | 635 | This program is free software: you can redistribute it and/or modify 636 | it under the terms of the GNU Affero General Public License as published 637 | by the Free Software Foundation, either version 3 of the License, or 638 | (at your option) any later version. 639 | 640 | This program is distributed in the hope that it will be useful, 641 | but WITHOUT ANY WARRANTY; without even the implied warranty of 642 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 643 | GNU Affero General Public License for more details. 644 | 645 | You should have received a copy of the GNU Affero General Public License 646 | along with this program. If not, see . 647 | 648 | Also add information on how to contact you by electronic and paper mail. 649 | 650 | If your software can interact with users remotely through a computer 651 | network, you should also make sure that it provides a way for users to 652 | get its source. For example, if your program is a web application, its 653 | interface could display a "Source" link that leads users to an archive 654 | of the code. There are many ways you could offer source, and different 655 | solutions will be better for different programs; see section 13 for the 656 | specific requirements. 657 | 658 | You should also get your employer (if you work as a programmer) or school, 659 | if any, to sign a "copyright disclaimer" for the program, if necessary. 660 | For more information on this, and how to apply and follow the GNU AGPL, see 661 | . 662 | 663 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | .PHONY: build 2 | build: 3 | go build -o ./bin/nostr-relay-proxy . 4 | 5 | .PHONY: run 6 | run: 7 | go run *.go 8 | 9 | .PHONY: test 10 | test: 11 | go test -v ./... 12 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # nostr-relay-proxy 2 | 3 | > ⚠️ WARNING: Experimental software. Use at your own risk. 4 | 5 | A fan-in / fan-out nostr relay proxy. Instead of connecting your 6 | nostr client to many relays, connect it to a single nostr relay proxy and enjoy: 7 | 8 | - **Efficient bandwidth usage**: events are deduplicated before being sent to the client. 9 | - **Increased performance**: offloading deduplication in addition to event caching optimizes query performance. 10 | - **Client IP obfuscation**: upstream relays only see the IP of the nostr relay proxy, not the client. 11 | 12 | ## Features 13 | 14 | #### Authentication 15 | 16 | Access to your nostr relay proxy may be restricted to a whitelist of allowed users. 17 | There are two layers of authentication employed to restrict access: 18 | 19 | 1. **Public key allowlist**: A list of `allowed_npubs` in the config file restricts reads and writes to whitelisted users. 20 | 2. **[NIP-42](https://github.com/nostr-protocol/nips/blob/master/42.md)**: 21 | Queries are restricted to authenticated clients only. 22 | 23 | #### Local database 24 | 25 | Events from upstream relays are stored locally on disk in a [LMDB](https://en.wikipedia.org/wiki/Lightning_Memory-Mapped_Database). 26 | As queries are received, the proxy will check its local database first and return 27 | matching events if found. This read-through style cache dramatically speeds up query responses. 28 | 29 | ## Quickstart 30 | 31 | 1. Build the source code 32 | ``` 33 | make build 34 | ``` 35 | 36 | 2. Create a config file 37 | ``` 38 | cp example.config.yaml config.yaml 39 | ``` 40 | 41 | 3. Run the nostr-relay-proxy 42 | ``` 43 | ./bin/nostr-relay-proxy -config ./path/to/config.yaml 44 | ``` 45 | -------------------------------------------------------------------------------- /config.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "os" 5 | "runtime/debug" 6 | "strings" 7 | 8 | "github.com/nbd-wtf/go-nostr/nip19" 9 | "gopkg.in/yaml.v3" 10 | ) 11 | 12 | const ( 13 | defaultPort = 8001 14 | defaultHost = "0.0.0.0" 15 | ) 16 | 17 | // Config is the relay configuration. 18 | type Config struct { 19 | // RelayURL is the websocket address of the relay. 20 | RelayURL string `yaml:"relay_url"` 21 | // RelayName is the NIP-11 relay name. 22 | RelayName string `yaml:"relay_name"` 23 | // RelayNpub is the NIP-11 relay pubkey in npub encoding. 24 | RelayNpub string `yaml:"relay_npub"` 25 | // RelayContact is the NIP-11 relay contact. 26 | RelayContact string `yaml:"relay_contact"` 27 | // RelayDescription is the NIP-11 relay description. 28 | RelayDescription string `yaml:"relay_description"` 29 | // RelayIconURL is the NIP-11 relay Icon URL. 30 | RelayIconURL string `yaml:"relay_icon_url"` 31 | RelayVersion string // set automatically 32 | 33 | // Port is the listen port. 34 | Port int `yaml:"port"` 35 | // Host is the listen host. 36 | Host string `yaml:"host"` 37 | // LogLevel sets the log level, either 'debug' or 'error'. Defaults error. 38 | LogLevel string `yaml:"log_level"` 39 | // AllowedNpubs is a list of npubs the relay will accept events from. 40 | AllowedNpubs []string `yaml:"allowed_npubs"` 41 | // ReadRelays is a list of relay URLs events will be read from. 42 | ReadRelays []string `yaml:"read_relays"` 43 | // WriteRelays is a list of relay URLs new events will be written to. 44 | WriteRelays []string `yaml:"write_relays"` 45 | // LocalDBPath sets the directory of local event storage. Defaults ./lmdb.db. 46 | LocalDBPath string `yaml:"local_db_path"` 47 | // DisableAuth disables the NIP-42 auth requirement. 48 | DisableAuth bool `yaml:"disable_auth"` 49 | // DisableLocalDB disables local event storage. 50 | DisableLocalDB bool `yaml:"disable_local_db"` 51 | } 52 | 53 | func LoadConfig(path string) (Config, error) { 54 | var c Config 55 | 56 | f, err := os.Open(path) 57 | if err != nil { 58 | return c, err 59 | } 60 | defer f.Close() 61 | 62 | if err := yaml.NewDecoder(f).Decode(&c); err != nil { 63 | return c, err 64 | } 65 | 66 | c.setDefaults() 67 | 68 | return c, nil 69 | } 70 | 71 | func (c *Config) setDefaults() { 72 | if c.Port == 0 { 73 | c.Port = defaultPort 74 | } 75 | if c.Host == "" { 76 | c.Host = defaultHost 77 | } 78 | if c.LogLevel == "" { 79 | c.LogLevel = "error" 80 | } 81 | if c.LocalDBPath == "" { 82 | c.LocalDBPath = "lmdb.db" 83 | } 84 | 85 | // Set relay version as git commit 86 | if info, ok := debug.ReadBuildInfo(); ok { 87 | for _, setting := range info.Settings { 88 | switch setting.Key { 89 | case "vcs.revision": 90 | c.RelayVersion = setting.Value[:7] 91 | } 92 | } 93 | } 94 | } 95 | 96 | func (c Config) PubkeyIsAllowed(pk string) bool { 97 | if pk == "" { 98 | return false 99 | } 100 | 101 | npub, err := nip19.EncodePublicKey(pk) 102 | if err != nil { 103 | return false 104 | } 105 | 106 | for _, allowedNpub := range c.AllowedNpubs { 107 | if strings.EqualFold(allowedNpub, npub) { 108 | return true 109 | } 110 | } 111 | 112 | return false 113 | } 114 | 115 | func (c Config) decodeRelayNpub() string { 116 | prefix, val, err := nip19.Decode(c.RelayNpub) 117 | if err != nil || prefix != "npub" { 118 | return "" 119 | } 120 | return val.(string) 121 | } 122 | -------------------------------------------------------------------------------- /example.config.yaml: -------------------------------------------------------------------------------- 1 | relay_url: wss://example.com 2 | relay_name: nostr relay proxy 3 | relay_npub: npub1q6jhqge4fql3kvhhq4zf72w6nav7temdcamyxe7vu5ys34s6mvlqc5suxj 4 | relay_description: A nostr relay proxy instance 5 | relay_icon_url: "https://images.unsplash.com/photo-1494216928456-ae75fd96603d?q=80&w=300&auto=format&fit=crop&ixlib=rb-4.0.3" 6 | host: 0.0.0.0 7 | port: 8000 8 | local_db_path: data 9 | allowed_npubs: 10 | - npub10000000thpep7auj058803nqtymqlf3rw87lzhe6mkfeywnpxg5sjw7nql 11 | read_relays: 12 | - wss://nos.lol 13 | - wss://relay.damus.io 14 | - wss://relay.plebstr.com 15 | write_relays: 16 | - wss://nos.lol 17 | - wss://relay.damus.io 18 | 19 | # for additional configuration parameters, see config.go. 20 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module github.com/bndw/nostr-relay-proxy 2 | 3 | go 1.21.4 4 | 5 | toolchain go1.21.5 6 | 7 | require ( 8 | github.com/fiatjaf/eventstore v0.3.11 9 | github.com/fiatjaf/khatru v0.3.1 10 | github.com/nbd-wtf/go-nostr v0.28.4 11 | github.com/prometheus/client_golang v1.18.0 12 | gopkg.in/yaml.v3 v3.0.1 13 | ) 14 | 15 | require ( 16 | github.com/PowerDNS/lmdb-go v1.9.2 // indirect 17 | github.com/andybalholm/brotli v1.0.6 // indirect 18 | github.com/beorn7/perks v1.0.1 // indirect 19 | github.com/btcsuite/btcd/btcec/v2 v2.3.2 // indirect 20 | github.com/btcsuite/btcd/btcutil v1.1.5 // indirect 21 | github.com/btcsuite/btcd/chaincfg/chainhash v1.1.0 // indirect 22 | github.com/cespare/xxhash/v2 v2.2.0 // indirect 23 | github.com/decred/dcrd/crypto/blake256 v1.0.1 // indirect 24 | github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect 25 | github.com/fasthttp/websocket v1.5.7 // indirect 26 | github.com/gobwas/httphead v0.1.0 // indirect 27 | github.com/gobwas/pool v0.2.1 // indirect 28 | github.com/gobwas/ws v1.3.1 // indirect 29 | github.com/josharian/intern v1.0.0 // indirect 30 | github.com/klauspost/compress v1.17.4 // indirect 31 | github.com/mailru/easyjson v0.7.7 // indirect 32 | github.com/matttproud/golang_protobuf_extensions/v2 v2.0.0 // indirect 33 | github.com/prometheus/client_model v0.5.0 // indirect 34 | github.com/prometheus/common v0.45.0 // indirect 35 | github.com/prometheus/procfs v0.12.0 // indirect 36 | github.com/puzpuzpuz/xsync/v3 v3.0.2 // indirect 37 | github.com/rogpeppe/go-internal v1.12.0 // indirect 38 | github.com/rs/cors v1.10.1 // indirect 39 | github.com/savsgio/gotils v0.0.0-20230208104028-c358bd845dee // indirect 40 | github.com/sebest/xff v0.0.0-20210106013422-671bd2870b3a // indirect 41 | github.com/tidwall/gjson v1.17.0 // indirect 42 | github.com/tidwall/match v1.1.1 // indirect 43 | github.com/tidwall/pretty v1.2.1 // indirect 44 | github.com/valyala/bytebufferpool v1.0.0 // indirect 45 | github.com/valyala/fasthttp v1.51.0 // indirect 46 | golang.org/x/exp v0.0.0-20231226003508-02704c960a9b // indirect 47 | golang.org/x/net v0.19.0 // indirect 48 | golang.org/x/sys v0.15.0 // indirect 49 | google.golang.org/protobuf v1.31.0 // indirect 50 | ) 51 | -------------------------------------------------------------------------------- /go.sum: -------------------------------------------------------------------------------- 1 | github.com/PowerDNS/lmdb-go v1.9.2 h1:Cmgerh9y3ZKBZGz1irxSShhfmFyRUh+Zdk4cZk7ZJvU= 2 | github.com/PowerDNS/lmdb-go v1.9.2/go.mod h1:TE0l+EZK8Z1B4dx070ZxkWTlp8RG1mjN0/+FkFRQMtU= 3 | github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII= 4 | github.com/andybalholm/brotli v1.0.6 h1:Yf9fFpf49Zrxb9NlQaluyE92/+X7UVHlhMNJN2sxfOI= 5 | github.com/andybalholm/brotli v1.0.6/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig= 6 | github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM= 7 | github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw= 8 | github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ= 9 | github.com/btcsuite/btcd v0.22.0-beta.0.20220111032746-97732e52810c/go.mod h1:tjmYdS6MLJ5/s0Fj4DbLgSbDHbEqLJrtnHecBFkdz5M= 10 | github.com/btcsuite/btcd v0.23.5-0.20231215221805-96c9fd8078fd/go.mod h1:nm3Bko6zh6bWP60UxwoT5LzdGJsQJaPo6HjduXq9p6A= 11 | github.com/btcsuite/btcd/btcec/v2 v2.1.0/go.mod h1:2VzYrv4Gm4apmbVVsSq5bqf1Ec8v56E48Vt0Y/umPgA= 12 | github.com/btcsuite/btcd/btcec/v2 v2.1.3/go.mod h1:ctjw4H1kknNJmRN4iP1R7bTQ+v3GJkZBd6mui8ZsAZE= 13 | github.com/btcsuite/btcd/btcec/v2 v2.3.2 h1:5n0X6hX0Zk+6omWcihdYvdAlGf2DfasC0GMf7DClJ3U= 14 | github.com/btcsuite/btcd/btcec/v2 v2.3.2/go.mod h1:zYzJ8etWJQIv1Ogk7OzpWjowwOdXY1W/17j2MW85J04= 15 | github.com/btcsuite/btcd/btcutil v1.0.0/go.mod h1:Uoxwv0pqYWhD//tfTiipkxNfdhG9UrLwaeswfjfdF0A= 16 | github.com/btcsuite/btcd/btcutil v1.1.0/go.mod h1:5OapHB7A2hBBWLm48mmw4MOHNJCcUBTwmWH/0Jn8VHE= 17 | github.com/btcsuite/btcd/btcutil v1.1.5 h1:+wER79R5670vs/ZusMTF1yTcRYE5GUsFbdjdisflzM8= 18 | github.com/btcsuite/btcd/btcutil v1.1.5/go.mod h1:PSZZ4UitpLBWzxGd5VGOrLnmOjtPP/a6HaFo12zMs00= 19 | github.com/btcsuite/btcd/chaincfg/chainhash v1.0.0/go.mod h1:7SFka0XMvUgj3hfZtydOrQY2mwhPclbT2snogU7SQQc= 20 | github.com/btcsuite/btcd/chaincfg/chainhash v1.0.1/go.mod h1:7SFka0XMvUgj3hfZtydOrQY2mwhPclbT2snogU7SQQc= 21 | github.com/btcsuite/btcd/chaincfg/chainhash v1.1.0 h1:59Kx4K6lzOW5w6nFlA0v5+lk/6sjybR934QNHSJZPTQ= 22 | github.com/btcsuite/btcd/chaincfg/chainhash v1.1.0/go.mod h1:7SFka0XMvUgj3hfZtydOrQY2mwhPclbT2snogU7SQQc= 23 | github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f/go.mod h1:TdznJufoqS23FtqVCzL0ZqgP5MqXbb4fg/WgDys70nA= 24 | github.com/btcsuite/btcutil v0.0.0-20190425235716-9e5f4b9a998d/go.mod h1:+5NJ2+qvTyV9exUAL/rxXi3DcLg2Ts+ymUAY5y4NvMg= 25 | github.com/btcsuite/go-socks v0.0.0-20170105172521-4720035b7bfd/go.mod h1:HHNXQzUsZCxOoE+CPiyCTO6x34Zs86zZUiwtpXoGdtg= 26 | github.com/btcsuite/goleveldb v0.0.0-20160330041536-7834afc9e8cd/go.mod h1:F+uVaaLLH7j4eDXPRvw78tMflu7Ie2bzYOH4Y8rRKBY= 27 | github.com/btcsuite/goleveldb v1.0.0/go.mod h1:QiK9vBlgftBg6rWQIj6wFzbPfRjiykIEhBH4obrXJ/I= 28 | github.com/btcsuite/snappy-go v0.0.0-20151229074030-0bdef8d06723/go.mod h1:8woku9dyThutzjeg+3xrA5iCpBRH8XEEg3lh6TiUghc= 29 | github.com/btcsuite/snappy-go v1.0.0/go.mod h1:8woku9dyThutzjeg+3xrA5iCpBRH8XEEg3lh6TiUghc= 30 | github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792/go.mod h1:ghJtEyQwv5/p4Mg4C0fgbePVuGr935/5ddU9Z3TmDRY= 31 | github.com/btcsuite/winsvc v1.0.0/go.mod h1:jsenWakMcC0zFBFurPLEAyrnc/teJEM1O46fmI40EZs= 32 | github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44= 33 | github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= 34 | github.com/davecgh/go-spew v0.0.0-20171005155431-ecdeabc65495/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= 35 | github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= 36 | github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= 37 | github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= 38 | github.com/decred/dcrd/crypto/blake256 v1.0.0/go.mod h1:sQl2p6Y26YV+ZOcSTP6thNdn47hh8kt6rqSlvmrXFAc= 39 | github.com/decred/dcrd/crypto/blake256 v1.0.1 h1:7PltbUIQB7u/FfZ39+DGa/ShuMyJ5ilcvdfma9wOH6Y= 40 | github.com/decred/dcrd/crypto/blake256 v1.0.1/go.mod h1:2OfgNZ5wDpcsFmHmCK5gZTPcCXqlm2ArzUIkw9czNJo= 41 | github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1/go.mod h1:hyedUtir6IdtD/7lIxGeCxkaw7y45JueMRL4DIyJDKs= 42 | github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 h1:8UrgZ3GkP4i/CLijOJx79Yu+etlyjdBU4sfcs2WYQMs= 43 | github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0/go.mod h1:v57UDF4pDQJcEfFUCRop3lJL149eHGSe9Jvczhzjo/0= 44 | github.com/decred/dcrd/lru v1.0.0/go.mod h1:mxKOwFd7lFjN2GZYsiz/ecgqR6kkYAl+0pz0tEMk218= 45 | github.com/fasthttp/websocket v1.5.7 h1:0a6o2OfeATvtGgoMKleURhLT6JqWPg7fYfWnH4KHau4= 46 | github.com/fasthttp/websocket v1.5.7/go.mod h1:bC4fxSono9czeXHQUVKxsC0sNjbm7lPJR04GDFqClfU= 47 | github.com/fiatjaf/eventstore v0.3.11 h1:tJtmFdrf4Pmm1slfx0rAWeFfk93D/tQ5V2IO3z8BCWM= 48 | github.com/fiatjaf/eventstore v0.3.11/go.mod h1:Fp8nCPq2wPjyd9sV7YaE3TYlhtV6FZQ7/ezXMcXFcfw= 49 | github.com/fiatjaf/khatru v0.3.1 h1:wuiu6CD/FfKDAao1kxWIEnD9JFSkh5p1IkYA7xNkGHE= 50 | github.com/fiatjaf/khatru v0.3.1/go.mod h1:GTplSjXtShIiL/o8q2KiyoAVidcHKSCHVqylj1pL8P0= 51 | github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo= 52 | github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ= 53 | github.com/gobwas/httphead v0.1.0 h1:exrUm0f4YX0L7EBwZHuCF4GDp8aJfVeBrlLQrs6NqWU= 54 | github.com/gobwas/httphead v0.1.0/go.mod h1:O/RXo79gxV8G+RqlR/otEwx4Q36zl9rqC5u12GKvMCM= 55 | github.com/gobwas/pool v0.2.1 h1:xfeeEhW7pwmX8nuLVlqbzVc7udMDrwetjEv+TZIz1og= 56 | github.com/gobwas/pool v0.2.1/go.mod h1:q8bcK0KcYlCgd9e7WYLm9LpyS+YeLd8JVDW6WezmKEw= 57 | github.com/gobwas/ws v1.3.1 h1:Qi34dfLMWJbiKaNbDVzM9x27nZBjmkaW6i4+Ku+pGVU= 58 | github.com/gobwas/ws v1.3.1/go.mod h1:hRKAFb8wOxFROYNsT1bqfWnhX+b5MFeJM9r2ZSwg/KY= 59 | github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= 60 | github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8= 61 | github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA= 62 | github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs= 63 | github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w= 64 | github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0= 65 | github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI= 66 | github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk= 67 | github.com/golang/snappy v0.0.4/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q= 68 | github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= 69 | github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= 70 | github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= 71 | github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= 72 | github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38= 73 | github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY= 74 | github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE= 75 | github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU= 76 | github.com/jessevdk/go-flags v0.0.0-20141203071132-1679536dcc89/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI= 77 | github.com/jessevdk/go-flags v1.4.0/go.mod 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h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= 167 | golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= 168 | golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= 169 | golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= 170 | google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8= 171 | google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0= 172 | google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM= 173 | google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE= 174 | google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo= 175 | google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU= 176 | google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw= 177 | google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8= 178 | google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I= 179 | gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= 180 | gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk= 181 | gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q= 182 | gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys= 183 | gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw= 184 | gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 185 | gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 186 | gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 187 | gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= 188 | gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= 189 | gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= 190 | -------------------------------------------------------------------------------- /handlers.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "net/http" 5 | ) 6 | 7 | func handleIndex(w http.ResponseWriter, r *http.Request) { 8 | http.Redirect(w, r, "https://github.com/bndw/nostr-relay-proxy", http.StatusTemporaryRedirect) 9 | } 10 | -------------------------------------------------------------------------------- /logger.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "log" 5 | "os" 6 | ) 7 | 8 | const ( 9 | logLevelDebug logLevel = iota 10 | logLevelError 11 | ) 12 | 13 | type logLevel int 14 | 15 | func parseLogLevel(s string) logLevel { 16 | switch s { 17 | case "debug": 18 | return logLevelDebug 19 | default: 20 | return logLevelError 21 | } 22 | } 23 | 24 | type logger interface { 25 | Infof(format string, v ...any) 26 | Warningf(format string, v ...any) 27 | Errorf(format string, v ...any) 28 | setLogLevel(level logLevel) 29 | } 30 | 31 | func newLogger() logger { 32 | l := log.New(os.Stderr, "", log.LstdFlags) 33 | return &stdLogger{ 34 | log: l, 35 | logLevel: logLevelError, 36 | } 37 | } 38 | 39 | type stdLogger struct { 40 | log *log.Logger 41 | logLevel logLevel 42 | } 43 | 44 | func (l *stdLogger) setLogLevel(level logLevel) { 45 | l.logLevel = level 46 | } 47 | 48 | func (l stdLogger) Infof(format string, v ...any) { 49 | if l.logLevel != logLevelDebug { 50 | return 51 | } 52 | l.log.Printf(format, v...) 53 | } 54 | 55 | func (l stdLogger) Warningf(format string, v ...any) { 56 | if l.logLevel != logLevelDebug { 57 | return 58 | } 59 | l.log.Printf(format, v...) 60 | } 61 | 62 | func (l stdLogger) Errorf(format string, v ...any) { 63 | l.log.Printf(format, v...) 64 | } 65 | -------------------------------------------------------------------------------- /main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "flag" 5 | "fmt" 6 | "net/http" 7 | "os" 8 | 9 | "github.com/fiatjaf/khatru" 10 | "github.com/prometheus/client_golang/prometheus/promhttp" 11 | ) 12 | 13 | func main() { 14 | cfgPath := flag.String("config", "config.yaml", "path to config file") 15 | flag.Parse() 16 | 17 | log := newLogger() 18 | 19 | cfg, err := LoadConfig(*cfgPath) 20 | if err != nil { 21 | log.Errorf("load config: %v", err) 22 | os.Exit(1) 23 | } 24 | log.setLogLevel(parseLogLevel(cfg.LogLevel)) 25 | 26 | log.Infof("loaded config: %#v", cfg) 27 | 28 | store := newProxyStore(log, cfg) 29 | if err := store.Init(); err != nil { 30 | log.Errorf("store init: %v", err) 31 | os.Exit(1) 32 | } 33 | 34 | relay := khatru.NewRelay() 35 | relay.ServiceURL = cfg.RelayURL 36 | relay.Info.Name = cfg.RelayName 37 | relay.Info.PubKey = cfg.decodeRelayNpub() 38 | relay.Info.Contact = cfg.RelayContact 39 | relay.Info.Description = cfg.RelayDescription 40 | relay.Info.Icon = cfg.RelayIconURL 41 | relay.Info.Software = "https://github.com/bndw/nostr-relay-proxy" 42 | relay.Info.Version = cfg.RelayVersion 43 | relay.StoreEvent = append(relay.StoreEvent, store.SaveEvent) 44 | relay.QueryEvents = append(relay.QueryEvents, store.QueryEvents) 45 | relay.DeleteEvent = append(relay.DeleteEvent, store.DeleteEvent) 46 | relay.RejectEvent = append(relay.RejectEvent, store.RejectEvent) 47 | relay.RejectFilter = append(relay.RejectFilter, store.RejectFilter) 48 | relay.Router().HandleFunc("/", handleIndex) 49 | relay.Router().Handle("/metrics", promhttp.Handler()) 50 | 51 | listenAddr := fmt.Sprintf("%s:%d", cfg.Host, cfg.Port) 52 | log.Errorf("listening on: %s", listenAddr) 53 | http.ListenAndServe(listenAddr, relay) 54 | } 55 | -------------------------------------------------------------------------------- /store.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "context" 5 | "fmt" 6 | "math/rand" 7 | "sync" 8 | 9 | "github.com/fiatjaf/eventstore" 10 | "github.com/fiatjaf/eventstore/lmdb" 11 | "github.com/fiatjaf/eventstore/nullstore" 12 | "github.com/fiatjaf/khatru" 13 | "github.com/nbd-wtf/go-nostr" 14 | ) 15 | 16 | func newProxyStore(log logger, cfg Config) *proxyStore { 17 | return &proxyStore{ 18 | log: log, 19 | config: cfg, 20 | db: &nullstore.NullStore{}, 21 | } 22 | } 23 | 24 | type proxyStore struct { 25 | log logger 26 | config Config 27 | 28 | db eventstore.Store 29 | pool *nostr.SimplePool 30 | } 31 | 32 | func (s *proxyStore) Init() error { 33 | if !s.config.DisableLocalDB { 34 | s.db = &lmdb.LMDBBackend{Path: s.config.LocalDBPath} 35 | if err := s.db.Init(); err != nil { 36 | return err 37 | } 38 | } 39 | 40 | s.pool = nostr.NewSimplePool(context.Background()) 41 | 42 | for _, url := range s.config.ReadRelays { 43 | if _, err := s.pool.EnsureRelay(url); err != nil { 44 | s.log.Errorf("pool connect to %v err: %v", url, err) 45 | } 46 | } 47 | 48 | return nil 49 | } 50 | 51 | func (s proxyStore) Close() {} 52 | 53 | func (s proxyStore) DeleteEvent(ctx context.Context, evt *nostr.Event) error { 54 | return nil 55 | } 56 | 57 | func (s proxyStore) QueryEvents(ctx context.Context, filter nostr.Filter) (chan *nostr.Event, error) { 58 | tok := genToken() 59 | s.log.Infof("QueryEvents[%s]: starting", tok) 60 | 61 | var ( 62 | wg sync.WaitGroup 63 | seen sync.Map 64 | events = make(chan *nostr.Event) 65 | localCount, upstreamCount = 0, 0 66 | ) 67 | 68 | // Local db 69 | wg.Add(1) 70 | go func() { 71 | defer func() { 72 | wg.Done() 73 | s.log.Infof("QueryEvents[%s]: local done", tok) 74 | }() 75 | 76 | local, err := s.db.QueryEvents(ctx, filter) 77 | if err != nil { 78 | s.log.Infof("err QueryEvents[%s] local err: %v", tok, err) 79 | return 80 | } 81 | 82 | for event := range local { 83 | if _, ok := seen.Load(event.ID); ok { 84 | continue 85 | } 86 | 87 | events <- event 88 | localCount++ 89 | 90 | seen.Store(event.ID, struct{}{}) 91 | } 92 | }() 93 | 94 | // Upstream relays 95 | wg.Add(1) 96 | go func() { 97 | defer func() { 98 | wg.Done() 99 | s.log.Infof("QueryEvents[%s]: upstream done", tok) 100 | }() 101 | 102 | defer func() { 103 | // TODO: Some calls to db.SaveEvent are panicing about an out of bounds idx 104 | if r := recover(); r != nil { 105 | s.log.Errorf("QueryEvents[%s]: panic recovered: %v", tok, r) 106 | } 107 | }() 108 | 109 | upstream := s.pool.SubMany(ctx, s.config.ReadRelays, []nostr.Filter{filter}) 110 | for event := range upstream { 111 | if _, ok := seen.Load(event.ID); ok { 112 | continue 113 | } 114 | 115 | events <- event.Event 116 | upstreamCount++ 117 | 118 | seen.Store(event.ID, struct{}{}) 119 | s.db.SaveEvent(ctx, event.Event) 120 | } 121 | }() 122 | 123 | go func() { 124 | <-ctx.Done() 125 | wg.Wait() 126 | s.log.Infof("QueryEvents[%s]: complete. %d local %d upstream", tok, localCount, upstreamCount) 127 | close(events) 128 | }() 129 | 130 | return events, nil 131 | } 132 | 133 | func (s proxyStore) SaveEvent(ctx context.Context, event *nostr.Event) error { 134 | s.log.Infof("SaveEvent: %#v", *event) 135 | 136 | for _, url := range s.config.WriteRelays { 137 | relay, err := nostr.RelayConnect(ctx, url) 138 | if err != nil { 139 | s.log.Infof("err: relay connect %q: %v", url, err) 140 | continue 141 | } 142 | defer relay.Close() 143 | 144 | err = relay.Publish(ctx, *event) 145 | if err != nil { 146 | s.log.Infof("err: relay publish %q: %v", url, err) 147 | continue 148 | } 149 | 150 | s.log.Infof("published to %s", url) 151 | } 152 | 153 | s.db.SaveEvent(ctx, event) 154 | 155 | return nil 156 | } 157 | 158 | func (s proxyStore) RejectEvent(ctx context.Context, event *nostr.Event) (bool, string) { 159 | if len(s.config.AllowedNpubs) > 0 && !s.config.PubkeyIsAllowed(event.PubKey) { 160 | s.log.Infof("pubkey not authorized to write: %q", event.PubKey) 161 | return true, "unauthorized pubkey" 162 | } 163 | 164 | return false, "" 165 | } 166 | 167 | func (s proxyStore) RejectFilter(ctx context.Context, filter nostr.Filter) (bool, string) { 168 | pk := khatru.GetAuthed(ctx) 169 | if !s.config.DisableAuth && pk == "" { 170 | return true, "auth-required: only authenticated users can read from this relay" 171 | } 172 | 173 | if len(s.config.AllowedNpubs) > 0 && !s.config.PubkeyIsAllowed(pk) { 174 | s.log.Infof("pubkey not authorized to read: %q", pk) 175 | return true, "unauthorized pubkey" 176 | } 177 | 178 | return false, "" 179 | } 180 | 181 | func genToken() string { 182 | tkn := make([]byte, 4) 183 | rand.Read(tkn) 184 | return fmt.Sprintf("%x", tkn) 185 | } 186 | --------------------------------------------------------------------------------