diff --git a/samples/java/S3Sample.java b/samples/java/S3Sample.java
index ca6a639..01ecc86 100644
--- a/samples/java/S3Sample.java
+++ b/samples/java/S3Sample.java
@@ -99,9 +99,10 @@ public static void main(String[] args) throws IOException {
 
         S3ClientOptions clientOptions = new S3ClientOptions();
         clientOptions.setPathStyleAccess(true);
+        clientOptions.disableChunkedEncoding();
 
         AmazonS3 s3 = new AmazonS3Client(customProvider);
-        s3.setEndpoint("https://zeppelin-gateway-host");
+        s3.setEndpoint("http://zeppelin-gateway-host");
         s3.setS3ClientOptions(clientOptions);
 
         String bucketName = "my-first-s3-bucket-" + UUID.randomUUID();
diff --git a/samples/php/S3Sample.php b/samples/php/S3Sample.php
index ab3fa87..9422b71 100644
--- a/samples/php/S3Sample.php
+++ b/samples/php/S3Sample.php
@@ -9,7 +9,7 @@
   'version'           => '2006-03-01',
   'signature_version' => 'v4',
   'use_path_style_endpoint' => true,
-  'endpoint' => 'https://zeppelin-gateway-host',
+  'endpoint' => 'http://zeppelin-gateway-host',
   'credentials' => [
     'key'    => 'XXXXXXXXXXXXXXXXXXXX',
     'secret' => 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'
diff --git a/samples/python/S3Sample.py b/samples/python/S3Sample.py
index 8761f95..8ef6f5a 100644
--- a/samples/python/S3Sample.py
+++ b/samples/python/S3Sample.py
@@ -2,9 +2,9 @@
 from botocore.client import Config
     
 s3_cli = boto3.client('s3', 'sh-bt-1',
-    config=Config(signature_version='s3v4'), use_ssl=True,
-    verify='/path-to/cacert.pem, or delete me and set use_ssl=False',
-    endpoint_url='https://zeppelin-gateway-host',
+    config=Config(signature_version='s3v4'), use_ssl=False,
+    # verify='/path-to/cacert.pem, or delete me and set use_ssl=False',
+    endpoint_url='http://zeppelin-gateway-host',
     aws_secret_access_key='XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX',
     aws_access_key_id='XXXXXXXXXXXXXXXXXXXX')
 
diff --git a/src/s3_cmds/zgw_s3_command.cc b/src/s3_cmds/zgw_s3_command.cc
index fbf854f..a4993af 100644
--- a/src/s3_cmds/zgw_s3_command.cc
+++ b/src/s3_cmds/zgw_s3_command.cc
@@ -113,18 +113,17 @@ void DestroyCmdTable(S3CmdTable* cmd_table) {
 }
 
 bool S3Cmd::TryAuth() {
-  if (!bucket_name_.empty()) {
+  if ((flags() & kFlagsRead) && !bucket_name_.empty()) {
     zgwstore::Bucket bkt;
     std::string unuseful_name;
     bool anonymous = true;
     Status s = store_->GetBucket(unuseful_name, bucket_name_, &bkt, anonymous);
     if (!s.ok()) {
+      http_ret_code_ = 403;
       GenerateErrorXml(kInvalidAccessKeyId);
       return false;
     }
-    if (bkt.acl == "FULL_CONTROL" ||
-        (bkt.acl == "READ" && flags() & kFlagsRead) ||
-        (bkt.acl == "WRITE" && flags() & kFlagsWrite)) {
+    if (bkt.acl == "FULL_CONTROL" || bkt.acl == "READ") {
       user_name_.assign(bkt.owner);
       return true;
     }