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-rw-r--r--src/main/java/eu/siacs/conversations/utils/DNSHelper.java5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/main/java/eu/siacs/conversations/utils/DNSHelper.java b/src/main/java/eu/siacs/conversations/utils/DNSHelper.java
index f3c4f79a2..e07df627e 100644
--- a/src/main/java/eu/siacs/conversations/utils/DNSHelper.java
+++ b/src/main/java/eu/siacs/conversations/utils/DNSHelper.java
@@ -227,10 +227,11 @@ public class DNSHelper {
}
public static boolean isIp(final String server) {
- return PATTERN_IPV4.matcher(server).matches()
+ return server != null && (
+ PATTERN_IPV4.matcher(server).matches()
|| PATTERN_IPV6.matcher(server).matches()
|| PATTERN_IPV6_6HEX4DEC.matcher(server).matches()
|| PATTERN_IPV6_HEX4DECCOMPRESSED.matcher(server).matches()
- || PATTERN_IPV6_HEXCOMPRESSED.matcher(server).matches();
+ || PATTERN_IPV6_HEXCOMPRESSED.matcher(server).matches());
}
}