Make clear protection timeout configurable.

fixes #335

backend/src/api/mempool.ts

@@ -10,7 +10,6 @@ import loadingIndicators from './loading-indicators';
 
 class Mempool {
   private static WEBSOCKET_REFRESH_RATE_MS = 10000;
-  private static CLEAR_PROTECTION_MINUTES = 10;
   private inSync: boolean = false;
   private mempoolCache: { [txId: string]: TransactionExtended } = {};
   private mempoolInfo: IBitcoinApi.MempoolInfo = { loaded: false, size: 0, bytes: 0, usage: 0,
@@ -143,7 +142,7 @@ class Mempool {
       setTimeout(() => {
         this.mempoolProtection = 2;
         logger.warn('Mempool clear protection resumed.');
-      }, 1000 * 60 * Mempool.CLEAR_PROTECTION_MINUTES);
+      }, 1000 * 60 * config.MEMPOOL.CLEAR_PROTECTION_MINUTES);
     }
 
     let newMempool = {};

backend/src/config.ts

@@ -9,6 +9,7 @@ interface IConfig {
     API_URL_PREFIX: string;
     POLL_RATE_MS: number;
     CACHE_DIR: string;
+    CLEAR_PROTECTION_MINUTES: number;
   };
   ESPLORA: {
     REST_API_URL: string;
@@ -61,7 +62,8 @@ const defaults: IConfig = {
     'SPAWN_CLUSTER_PROCS': 0,
     'API_URL_PREFIX': '/api/v1/',
     'POLL_RATE_MS': 2000,
-    'CACHE_DIR': './cache'
+    'CACHE_DIR': './cache',
+    'CLEAR_PROTECTION_MINUTES': 20,
   },
   'ESPLORA': {
     'REST_API_URL': 'http://127.0.0.1:3000',