From 787aa001b6078eb67c06baf94eb3858b3dc0cc57 Mon Sep 17 00:00:00 2001
From: Rimas <rmisev@users.noreply.github.com>
Date: Thu, 12 Jan 2017 02:25:10 +0200
Subject: [PATCH] Fix not compressing trailing zeros in IPv6

Fixes a bug in the function findLongestZeroSequence, which ignored trailing zeros sequences.
---
 src/url-state-machine.js |  6 ++++++
 test/to-upstream.json    | 16 ++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/src/url-state-machine.js b/src/url-state-machine.js
index 10ad78d..4534bd6 100644
--- a/src/url-state-machine.js
+++ b/src/url-state-machine.js
@@ -417,6 +417,12 @@ function findLongestZeroSequence(arr) {
     }
   }
 
+  // if trailing zeros
+  if (currLen > maxLen) {
+    maxIdx = currStart;
+    maxLen = currLen;
+  }
+
   return {
     idx: maxIdx,
     len: maxLen
diff --git a/test/to-upstream.json b/test/to-upstream.json
index 0d4f101..bce5fc4 100644
--- a/test/to-upstream.json
+++ b/test/to-upstream.json
@@ -1,2 +1,18 @@
 [
+  "# IPv6 trailing zeros compress test",
+  {
+    "input": "http://[1:0::]",
+    "base": "http://example.net/",
+    "href": "http://[1::]/",
+    "origin": "http://[1::]",
+    "protocol": "http:",
+    "username": "",
+    "password": "",
+    "host": "[1::]",
+    "hostname": "[1::]",
+    "port": "",
+    "pathname": "/",
+    "search": "",
+    "hash": ""
+  }
 ]