Fixed - Redis or Valkey hostname parsing. #3807

redisson/src/main/java/org/redisson/misc/RedisURI.java

@@ -68,6 +68,10 @@ public RedisURI(String uri) {
                     password = URLDecoder.decode(details[1], StandardCharsets.UTF_8.toString());
                 }
             }
+            if (url.getHost().isEmpty()) {
+                throw new IllegalArgumentException("Redis host can't be parsed");
+            }
+
             host = url.getHost();
             port = url.getPort();
             ssl = uri.startsWith("rediss://");

redisson/src/test/java/org/redisson/misc/RedisURITest.java

@@ -1,5 +1,6 @@
 package org.redisson.misc;
 
+import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -28,6 +29,13 @@ public void testIPv6Braces() {
         assertThat(uri2.getPort()).isEqualTo(6379);
     }
 
+    @Test
+    public void testHostname() {
+        Assertions.assertThrowsExactly(IllegalArgumentException.class, () -> {
+            new RedisURI("redis:///localhost:15319");
+        }, "Redis host can't be parsed");
+    }
+
     @Test
     public void testUsernamePassword() {
         RedisURI uri1 = new RedisURI("redis://user:[email protected]:15319");