fix: increase providers validity to 48 hours

packages/kad-dht/src/constants.ts

@@ -1,10 +1,3 @@
-// MaxRecordAge specifies the maximum time that any node will hold onto a record
-// from the time its received. This does not apply to any other forms of validity that
-// the record may contain.
-// For example, a record may contain an ipns entry with an EOL saying its valid
-// until the year 2020 (a great time in the future). For that record to stick around
-// it must be rebroadcasted more frequently than once every 'MaxRecordAge'
-
 import { KEEP_ALIVE } from '@libp2p/interface'
 
 export const second = 1000
@@ -15,7 +8,10 @@ export const MAX_RECORD_AGE = 36 * hour
 
 export const PROTOCOL = '/ipfs/kad/1.0.0'
 
-export const PROVIDERS_VALIDITY = 24 * hour
+/**
+ * @see https://github.com/libp2p/specs/blob/master/kad-dht/README.md#content-provider-advertisement-and-discovery
+ */
+export const PROVIDERS_VALIDITY = 48 * hour
 
 export const PROVIDERS_CLEANUP_INTERVAL = hour
 

packages/kad-dht/src/index.ts

@@ -377,21 +377,21 @@ export interface ReProvideInit {
   /**
    * How long before the record expiry to re-provide in ms
    *
-   * @default 7200000
+   * @default 7200000 (2 hours)
    */
   threshold?: number
 
   /**
    * How often to check which records need reproviding in ms
    *
-   * @default 3600000
+   * @default 3600000 (1 hour)
    */
   interval?: number
 
   /**
    * How long provider records are valid for in ms
    *
-   * @default 86400000
+   * @default 172800000 (48 hours)
    */
   validity?: number
 }