On reconnection, select the correct db index

src/main/java/redis/clients/jedis/BinaryClient.java

@@ -53,7 +53,11 @@ public class BinaryClient extends Connection {
         if (!isConnected()) {
             super.connect();
             if (password != null) {
-                sendCommand(AUTH, password);
+                auth(password);
+                getStatusCodeReply();
+            }
+            if (db > 0) {
+                select(Long.valueOf(db).intValue());
                 getStatusCodeReply();
             }
         }

src/main/java/redis/clients/jedis/Connection.java

@@ -24,6 +24,10 @@ public class Connection {
     private int pipelinedCommands = 0;
     private int timeout = Protocol.DEFAULT_TIMEOUT;
 
+    public Socket getSocket() {
+        return socket;
+    }
+
     public int getTimeout() {
         return timeout;
     }

src/test/java/redis/clients/jedis/tests/JedisTest.java

@@ -1,5 +1,6 @@
 package redis.clients.jedis.tests;
 
+import java.io.IOException;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -59,4 +60,13 @@ public class JedisTest extends JedisCommandTestBase {
     public void failWhenSendingNullValues() {
         jedis.set("foo", null);
     }
+
+    @Test
+    public void shouldReconnectToSameDB() throws IOException {
+        jedis.select(1);
+        jedis.set("foo", "bar");
+        jedis.getClient().getSocket().shutdownInput();
+        jedis.getClient().getSocket().shutdownOutput();
+        assertEquals("bar", jedis.get("foo"));
+    }
 }