From f6298af4c4222a12b3c90e2916af2d0f0b654932 Mon Sep 17 00:00:00 2001
From: C-3PO <c-3po@jedipedia.net>
Date: Fri, 16 Nov 2018 17:28:01 +0100
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=8E=20Switch=20to=20master=20source=20?=
 =?UTF-8?q?if=20CDN=20too=20slow?=
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

---
 src/cdn/downloadWrapper.ts          | 9 ++++++---
 src/cdn/heartbeatDns.ts             | 3 ++-
 src/interfaces/PatchMasterSource.ts | 2 ++
 3 files changed, 10 insertions(+), 4 deletions(-)
 create mode 100644 src/interfaces/PatchMasterSource.ts

diff --git a/src/cdn/downloadWrapper.ts b/src/cdn/downloadWrapper.ts
index b1854b8..cd2b658 100644
--- a/src/cdn/downloadWrapper.ts
+++ b/src/cdn/downloadWrapper.ts
@@ -1,5 +1,6 @@
 import * as os from 'os';
 import * as nodePath from 'path';
+import patchMasterSource from '../interfaces/PatchMasterSource';
 import downloadWithCurl from './downloadWithCurl';
 import checkLocalCache from './funcs/checkLocalCache';
 import createDirRecursively from './funcs/createDirRecursively';
@@ -21,10 +22,12 @@ export default async function downloadWrapper({ host, path, size }: {host: strin
   }
 
   //Download via curl
-  //Try up to ten times
-  for (let i = 0; i < 10; i += 1) {
+  //Try up to 15 times
+  for (let i = 0; i < 15; i += 1) {
     try {
-      const downloadResult = await downloadWithCurl({ host, path, tempFileName });
+      //After five tries from CDN, switch to master source
+      const currentHost = (host === 'cdn-patch.swtor.com' && i >= 5 ? patchMasterSource : host);
+      const downloadResult = await downloadWithCurl({ host: currentHost, path, tempFileName });
       return downloadResult;
     } catch (err) {
       console.error(err);
diff --git a/src/cdn/heartbeatDns.ts b/src/cdn/heartbeatDns.ts
index e9185e2..7529ee0 100644
--- a/src/cdn/heartbeatDns.ts
+++ b/src/cdn/heartbeatDns.ts
@@ -1,4 +1,5 @@
 import { IServerEntry } from '../interfaces/IDnsResult';
+import patchMasterSource from '../interfaces/PatchMasterSource';
 import resolveDns from './funcs/resolveDns';
 
 /** Time when this script started, for delta time calculations */
@@ -8,7 +9,7 @@ let lastUpdate = 0;
 /** List of servers, sorted by reliability */
 let servers: IServerEntry[] = [];
 //the master source is included by default
-servers.push({ ip: '159.153.92.51', type: 'master', lastSeen: Infinity, weight: Infinity });
+servers.push({ ip: patchMasterSource, type: 'master', lastSeen: Infinity, weight: Infinity });
 
 /** Updates the list of servers based on current DNS data */
 async function heartbeatDns(domain: string) {
diff --git a/src/interfaces/PatchMasterSource.ts b/src/interfaces/PatchMasterSource.ts
new file mode 100644
index 0000000..9342b37
--- /dev/null
+++ b/src/interfaces/PatchMasterSource.ts
@@ -0,0 +1,2 @@
+/** The master server hosting the patch files. */
+export default '159.153.92.51';