diff --git a/smack-core/src/main/java/org/jivesoftware/smack/util/IpAddressUtil.java b/smack-core/src/main/java/org/jivesoftware/smack/util/IpAddressUtil.java index 55586e2c3..8d1ad7b78 100644 --- a/smack-core/src/main/java/org/jivesoftware/smack/util/IpAddressUtil.java +++ b/smack-core/src/main/java/org/jivesoftware/smack/util/IpAddressUtil.java @@ -29,6 +29,8 @@ public class IpAddressUtil { return false; } + assert matcher.groupCount() == 4; + for (int i = 1; i <= 4; i++) { String ipSegment = matcher.group(i); int ipSegmentInt;