diff --git a/src/main/java/org/csource/fastdfs/pool/ConnectionFactory.java b/src/main/java/org/csource/fastdfs/pool/ConnectionFactory.java
index 3d026ed..a7d0738 100644
--- a/src/main/java/org/csource/fastdfs/pool/ConnectionFactory.java
+++ b/src/main/java/org/csource/fastdfs/pool/ConnectionFactory.java
@@ -23,7 +23,7 @@ public class ConnectionFactory {
             sock.connect(socketAddress, ClientGlobal.g_connect_timeout);
             return new Connection(sock, socketAddress);
         } catch (Exception e) {
-            throw new MyException("get connection error, ip:host = " + socketAddress.getHostName() + ":" + socketAddress.getPort() + ", emsg:" + e.getMessage());
+            throw new MyException("connect to server, " + socketAddress.getAddress().getHostAddress() + ":" + socketAddress.getPort() + " fail, emsg:" + e.getMessage());
         }
     }
 }
diff --git a/src/main/java/org/csource/fastdfs/pool/ConnectionManager.java b/src/main/java/org/csource/fastdfs/pool/ConnectionManager.java
index 0b1b251..cd9ccae 100644
--- a/src/main/java/org/csource/fastdfs/pool/ConnectionManager.java
+++ b/src/main/java/org/csource/fastdfs/pool/ConnectionManager.java
@@ -66,10 +66,10 @@ public class ConnectionManager {
                             //wait single success
                             continue;
                         }
-                        throw new MyException("get connection fail,ip:port = " + inetSocketAddress.getHostName() + ":" + inetSocketAddress.getPort() + " ,wait_time > " + ClientGlobal.g_connection_pool_max_wait_time_in_ms + "ms");
+                        throw new MyException("connect to server " + inetSocketAddress.getHostName() + ":" + inetSocketAddress.getPort() + " fail, wait_time > " + ClientGlobal.g_connection_pool_max_wait_time_in_ms + "ms");
                     } catch (InterruptedException e) {
                         e.printStackTrace();
-                        throw new MyException("get connection fail, ip:port = " + inetSocketAddress.getHostName() + ":" + inetSocketAddress.getPort() + ", emsg:" + e.getMessage());
+                        throw new MyException("connect to server " + inetSocketAddress.getHostName() + ":" + inetSocketAddress.getPort() + " fail, emsg:" + e.getMessage());
                     }
                 }
                 return connection;
@@ -102,7 +102,7 @@ public class ConnectionManager {
                 connection.closeDirectly();
             }
         } catch (IOException e) {
-            System.err.println("close socket error,ip:port = " + inetSocketAddress.getHostName() + ":" + inetSocketAddress.getPort() + ",emsg:" + e.getMessage());
+            System.err.println("close socket[" + inetSocketAddress.getAddress().getHostAddress() + ":" + inetSocketAddress.getPort() + "] error ,emsg:" + e.getMessage());
             e.printStackTrace();
         }
     }
diff --git a/src/main/java/org/csource/fastdfs/pool/ConnectionPool.java b/src/main/java/org/csource/fastdfs/pool/ConnectionPool.java
index b643adf..f5ac1ec 100644
--- a/src/main/java/org/csource/fastdfs/pool/ConnectionPool.java
+++ b/src/main/java/org/csource/fastdfs/pool/ConnectionPool.java
@@ -63,7 +63,7 @@ public class ConnectionPool {
         if (socketAddress == null) {
             return null;
         }
-        return String.format("%s:%s", socketAddress.getHostName(), socketAddress.getPort());
+        return String.format("%s:%s", socketAddress.getAddress().getHostAddress(), socketAddress.getPort());
     }
 
     @Override