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https://github.com/xbol0/nostring

A Nostr relay library written in Deno
https://github.com/xbol0/nostring

deno nostr postgresql relay typescript

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A Nostr relay library written in Deno

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README 

        
# Nostring



[Nostr](https://github.com/nostr-protocol/nostr) relay written in Deno.



You can easily host a relay by [Deno Deploy](https://deno.com/deploy) and [Bit.io](https://bit.io/).



## Features



- PostgreSQL database

- Spam filter

- Relay Bot

- Zap for admission



## Usage



Configure you environments or create a `.env` file.

More details are below.



And then:



```bash

deno run --allow-net --allow-read --allow-env \

  https://deno.land/x/nostring/scripts/start.ts

```



Or you can clone this repo and start manually:



```bash

git clone https://github.com/xbol0/nostring

cd nostring

deno task start

```



## Environment configuration



| Name | Required | Description | Default |

|:-:|:-:|:-|:-:|

|DB_URL|yes|PostgreSQL connect URL||

|PORT|no|HTTP server listen port|`9000`|

|DB_POOL_SIZE|no|Database client connection pool size|`3`|

|RELAY_NAME|no, recommanded|NIP-11 Relay name|`nostring`|

|RELAY_DESC|no|NIP-11 Relay desciption||

|ADMIN_PUBKEY|no, recommanded|NIP-11 Relay admin pubkey, hex encoding. Would be used for bot if enabled.||

|RELAY_COUNTRIES|no|NIP-11 Relay countries||

|ENABLE_BROADCASTCHANNEL|no|Enable [BraodcastChannel on Deno Deploy](https://deno.com/deploy/docs/runtime-broadcast-channel)||

|ENABLE_ALLOW_UNKNOWN_KIND|no|Enable save unknown kind events||

|DISABLE_NIP11|no|Disable handle NIP-11 request||

|SPAM_DETECT_PERCENT|no|Setup spam filter detect percentage, 0 to disable spam filter|`0.5`|

|BOT_KEY|no, yes if enabled payment|Bot private key, in hex encoding, if you enabled payment for relay, you should setup this||

|BOT_NAME|no|Bot name|You relay's name + `'s bot`|

|BOT_AVATAR|no|Bot picture|`https://media-uploader.orzv.workers.dev/pomf2.lain.la/f/m4lnneh4.png`|

|BOT_RELAY|no, yes if enabled payment|You bot relay list||

|MAX_MESSAGE_LENGTH|no|Max message length per websocket send|`393216` -> 384KB|

|MAX_SUBSCRIPTIONS|no|Max subscriptions per connection|`32`|

|MAX_FILTER|no|Max filters per REQ subscription|`10`|

|MAX_LIMIT|no|Max limit per filter|`500`|

|MAX_SUBID_LENGTH|no|Max subscription id length|`64`|

|MIN_PREFIX|no|Min prefix for ids and authors param|`32`|

|MAX_EVENT_TAGS|no|Max tags per event|`2048`|

|MAX_CONTENT_LENGTH|no|Max content length per event|`102400` -> 100KB|

|MIN_POW_DIFFICULTY|no|Min NIP-13 PoW diffieculty|`0`|

|AUTH_REQUIRED|no|Need auth for access||

|PAYMENT_REQUIRED|no|Need pay for access||

|NIPS|no|NIP-11 supported nips|`1,9,11,12,13,15,16,20,22,26,33,40,42`|

|EVENT_RETENTION|no|NIP-11 event retention, in JSON format|`[{"kinds":[1,4],"time":31536000,"count":5000},{"kinds":[6,7],"count":10000},{"kinds":[0,2,3],"count":1},{"count":1000}]`|

|EVENT_TIMESTAMP_RANGE|no|NIP-22 timestamp accepted range|`-86400~300` -> one day ago to 5 minites later|

|BROADCAST_RELAYS|no|Events broadcast to other relays, seperated by comma||

|WHITELIST_PUBKEYS|no|Whitelist pubkeys, seperated by comma||

|LANGUAGE_TAGS|no|NIP-11 language tags||

|TAGS|no|NIP-11 tags||

|POSTING_POLICY|no|NIP-11 posting policy url||

|PAYMENT_LNURL|no|Payment LNURL||

|FEES_ADMISSION|no|Fees for admission, unit sats, eg. `1000,2000,3000`||

|FEES_SUBSCRIPTION|no|Fees for subscription, unit sats, eg. `1000/2592000,2000/31536000`||

|FEES_PUBLICATION|no|Fees for publication, unit sats, eg. `1,2,3:10,4,10000:100`||