client: add bootnodes option

Author: jochem-brouwer

packages/client/bin/cli.ts

@@ -79,6 +79,10 @@ const args = require('yargs')
       describe: 'Path to chain parameters json file',
       coerce: path.resolve,
     },
+    bootnodes: {
+      describe: 'Whitespace seperated list of bootnodes',
+      array: true,
+    },
   })
   .locale('en_EN').argv
 
@@ -157,6 +161,7 @@ async function run() {
     loglevel: args.loglevel,
     minPeers: args.minPeers,
     maxPeers: args.maxPeers,
+    bootnodes: args.bootnodes,
   })
   logger = config.logger
 

packages/client/lib/config.ts

@@ -101,6 +101,13 @@ export interface ConfigOptions {
    * Default: `25`
    */
   maxPeers?: number
+
+  /**
+   * List of bootnodes. These get added to the default bootnodes, which are loaded from the relevant common
+   *
+   * Default: The bootnodes loaded from the relevant common
+   */
+  bootnodes?: string[]
 }
 
 export class Config {
@@ -132,6 +139,7 @@ export class Config {
   public readonly loglevel: string
   public readonly minPeers: number
   public readonly maxPeers: number
+  public readonly bootnodes: string[]
 
   public readonly servers: (RlpxServer | Libp2pServer)[] = []
 
@@ -149,6 +157,7 @@ export class Config {
     this.loglevel = options.loglevel ?? Config.LOGLEVEL_DEFAULT
     this.minPeers = options.minPeers ?? Config.MINPEERS_DEFAULT
     this.maxPeers = options.maxPeers ?? Config.MAXPEERS_DEFAULT
+    this.bootnodes = options.bootnodes ?? []
 
     if (options.logger) {
       if (options.loglevel) {
@@ -174,7 +183,34 @@ export class Config {
       // Otherwise parse transports from transports option
       this.servers = parseTransports(this.transports).map((t) => {
         if (t.name === 'rlpx') {
-          t.options.bootnodes = t.options.bootnodes || this.common.bootstrapNodes()
+          if (!t.options.bootnodes) {
+            const defaultNodes = this.common.bootstrapNodes()
+            const clonedNodes = [...defaultNodes]
+
+            this.bootnodes.forEach((string) => {
+              // First split the string of format "<ID>@<IP>:<PORT>" at the "@" character
+              // Then split the string after the "@" at the ":" character.
+              const splitID_IP = string.split('@')
+              if (splitID_IP.length != 2) {
+                throw new Error('Invalid bootnode: ' + string)
+              }
+              const id = splitID_IP[0]
+              const splitIP_Port = splitID_IP[1].split(':')
+              if (splitIP_Port.length != 2) {
+                throw new Error('Invalid bootnode: ' + string)
+              }
+              const ip = splitIP_Port[0]
+              const port = parseInt(splitIP_Port[1])
+
+              clonedNodes.push({
+                id,
+                ip,
+                port,
+              })
+            })
+
+            t.options.bootnodes = <any>clonedNodes
+          }
           return new RlpxServer({ config: this, ...t.options })
         } else {
           return new Libp2pServer({ config: this, ...t.options })