[fix] #1091 The fork window was not accurate enough

app/lib/blockchain/DuniterBlockchain.ts

@@ -213,15 +213,15 @@ export class DuniterBlockchain extends MiscIndexedBlockchain {
 
     const TAIL = await dal.bindexDAL.tail();
     const bindexSize = [
-      block.issuersCount,
-      block.issuersFrame,
+      TAIL.issuersCount,
+      TAIL.issuersFrame,
       conf.medianTimeBlocks,
       conf.dtDiffEval
     ].reduce((max, value) => {
       return Math.max(max, value);
     }, 0);
-    const MAX_BINDEX_SIZE = 2 * bindexSize;
-    const currentSize = indexes.HEAD.number - TAIL.number + 1;
+    const MAX_BINDEX_SIZE = conf.forksize + bindexSize
+    const currentSize = indexes.HEAD.number - TAIL.number + 1
     if (currentSize > MAX_BINDEX_SIZE) {
       await dal.trimIndexes(indexes.HEAD.number - MAX_BINDEX_SIZE);
     }

app/lib/computation/QuickSync.ts

@@ -203,7 +203,7 @@ export class QuickSynchronizer {
         }
 
         // Trim the bindex
-        sync_bindexSize = [
+        sync_bindexSize = this.conf.forksize + [
           block.issuersCount,
           block.issuersFrame,
           this.conf.medianTimeBlocks,

test/dal/triming.js

@@ -128,6 +128,7 @@ describe("Triming", function(){
         pub: 'HgTTJLAQ5sqfknMq7yLPZbehtuLSsKj9CxWN7k8QvYJd',
         sec: '51w4fEShBk1jCMauWu4mLpmDVfHksKmWcygpxriqCEZizbtERA6de4STKRkQBpxmMUwsKXRjSzuQ8ECwmqN1u2DP'
       },
+      forksize: 9,
       sigQty: 1,
       dtDiffEval: 2,
       medianTimeBlocks: 3