hostlist: make random an option.

lib/net/hostlist.js

@@ -73,6 +73,7 @@ class HostList {
     this.address = this.options.address;
     this.brontide = this.options.brontide;
     this.resolve = this.options.resolve;
+    this.random = this.options.random;
 
     this.key = rng.randomBytes(32);
     this.hash = new Hash256();
@@ -412,7 +413,7 @@ class HostList {
       buckets = this.fresh;
 
     if (this.totalUsed > 0) {
-      if (this.totalFresh === 0 || random(2) === 0)
+      if (this.totalFresh === 0 || this.random(2) === 0)
         buckets = this.used;
     }
 
@@ -424,13 +425,13 @@ class HostList {
     let factor = 1;
 
     for (;;) {
-      const i = random(buckets.length);
+      const i = this.random(buckets.length);
       const bucket = buckets[i];
 
       if (bucket.size === 0)
         continue;
 
-      let index = random(bucket.size);
+      let index = this.random(bucket.size);
       let entry;
 
       if (buckets === this.used) {
@@ -445,7 +446,7 @@ class HostList {
         }
       }
 
-      const num = random(1 << 30);
+      const num = this.random(1 << 30);
 
       if (num < factor * entry.chance(now) * (1 << 30))
         return entry;
@@ -586,7 +587,7 @@ class HostList {
       for (let i = 0; i < entry.refCount; i++)
         factor *= 2;
 
-      if (random(factor) !== 0)
+      if (this.random(factor) !== 0)
         return false;
     } else {
       if (!src)
@@ -862,7 +863,7 @@ class HostList {
       items.push(entry);
 
     for (let i = 0; i < items.length && out.length < 2500; i++) {
-      const j = random(items.length - i);
+      const j = this.random(items.length - i);
 
       [items[i], items[i + j]] = [items[i + j], items[i]];
 
@@ -1672,6 +1673,7 @@ class HostListOptions {
     this.onion = false;
     this.brontideOnly = false;
     this.banTime = common.BAN_TIME;
+    this.random = random;
 
     this.address = new NetAddress();
     this.address.services = this.services;
@@ -1804,6 +1806,11 @@ class HostListOptions {
       this.flushInterval = options.flushInterval;
     }
 
+    if (options.random != null) {
+      assert(typeof options.random === 'function');
+      this.random = options.random;;
+    }
+
     this.address.time = this.network.now();
     this.address.services = this.services;