diff --git a/dev_server/dev_server.py b/dev_server/dev_server.py
index 895537b..2b22c8b 100755
--- a/dev_server/dev_server.py
+++ b/dev_server/dev_server.py
@@ -17,13 +17,6 @@
 
 from sae.channel import _channel_wrapper
 
-app_root = search_file_bottom_up('config.yaml')
-if app_root is None:
-    print >> sys.stderr, \
-        'Error: Not an app directory(or any of the parent directories)'
-    sys.exit(1)
-if app_root != os.getcwd(): os.chdir(app_root)
-
 def setup_sae_environ(conf):
     # Add dummy pylibmc module
     import sae.memcache
@@ -61,6 +54,7 @@ def setup_sae_environ(conf):
         sae.const.MYSQL_PASS = password
         sae.const.MYSQL_PORT = port
         sae.const.MYSQL_HOST = host
+        sae.const.MYSQL_HOST_S = host
 
         print 'MySQL: %s.%s' % (conf.mysql, dbname)
     else:
@@ -202,4 +196,11 @@ def main(options):
     parser.add_option("--kvdb-file", dest="kvdb", help="File to save kvdb data")
     (options, args) = parser.parse_args()
 
+    app_root = search_file_bottom_up('config.yaml')
+    if app_root is None:
+        print >> sys.stderr, \
+            'Error: Not an app directory(or any of the parent directories)'
+        sys.exit(1)
+    if app_root != os.getcwd(): os.chdir(app_root)
+
     main(options)
diff --git a/dev_server/sae/__init__.py b/dev_server/sae/__init__.py
index 32cb350..e4f1229 100644
--- a/dev_server/sae/__init__.py
+++ b/dev_server/sae/__init__.py
@@ -10,3 +10,31 @@ def create_wsgi_app(app):
 
 def dev_server(conf):
     core.environ = conf
+
+import sys, os.path
+_PYTHON_VERSION = 'python%d.%d' % (sys.version_info[0], sys.version_info[1])
+
+def add_vendor_dir(path, index=1):
+    """Insert site dir or virtualenv at a given index in sys.path.
+
+    Args:
+      path: relative path to a site dir or virtualenv.
+      index: sys.path position to insert the site dir.
+
+    Raises:
+      ValueError: path doesn't exist.
+    """
+    venv_path = os.path.join(path, 'lib', _PYTHON_VERSION, 'site-packages')
+    if os.path.isdir(venv_path):
+        site_dir = venv_path
+    elif os.path.isdir(path):
+        site_dir = path
+    else:
+        raise ValueError('virtualenv: cannot access %s: '
+                         'No such virtualenv or site directory' % path)
+
+    sys_path = sys.path[:]
+    del sys.path[index:]
+    import site
+    site.addsitedir(site_dir)
+    sys.path.extend(sys_path[index:])
diff --git a/dev_server/sae/channel.py b/dev_server/sae/channel.py
index 2b612b8..373c74f 100644
--- a/dev_server/sae/channel.py
+++ b/dev_server/sae/channel.py
@@ -61,7 +61,7 @@ def create_channel(name, duration=None):
     _cache[name] = []
     return 'http://%s/_sae/channel/%s' % (os.environ['HTTP_HOST'], name)
 
-def send_message(name, message):
+def send_message(name, message, async=False):
     client_id = name
 
     if isinstance(message, unicode):
diff --git a/dev_server/saecloud b/dev_server/saecloud
index 10f99ed..c9520e2 100755
--- a/dev_server/saecloud
+++ b/dev_server/saecloud
@@ -168,7 +168,7 @@ def install(args):
 
     import tempfile
     tmpdir = tempfile.gettempdir()
-    argv = ['install', '-I',
+    argv = ['install', '-I', '--allow-all-external',
             '--install-option=--install-lib=%s' % dest,
             '--install-option=--install-data=%s' % dest,
             '--install-option=--install-scripts=%s' % tmpdir]
diff --git a/dev_server/setup.py b/dev_server/setup.py
index b42f7c2..f311a94 100755
--- a/dev_server/setup.py
+++ b/dev_server/setup.py
@@ -2,7 +2,7 @@
 import os.path
 from setuptools import setup, find_packages
 
-VERSION = '1.3.2'
+VERSION = '1.3.6'
 
 scripts = ['dev_server.py', 'saecloud', 'cloudsql.py']
 
diff --git a/examples/apibus/README b/examples/apibus/README
deleted file mode 100644
index 2e21d57..0000000
--- a/examples/apibus/README
+++ /dev/null
@@ -1 +0,0 @@
-如何在外部调用SAE服务。
diff --git a/examples/apibus/apibus_handler.py b/examples/apibus/apibus_handler.py
index 9cba8bb..14bc4fd 100644
--- a/examples/apibus/apibus_handler.py
+++ b/examples/apibus/apibus_handler.py
@@ -1,27 +1,31 @@
 #-*-coding: utf8 -*-
 
 """
-urllib2 handler for SAE APIBus Service
+SAE API auth handler for urllib2 and requests
 
-Usage:
+urllib2:
 
-import urllib2
-from apibus_handler import APIBusHandler
-opener = urllib2.build_opener(APIBusHandler(ACCESSKEY, SECRETKEY))
+>>> import urllib2
+>>> apibus_handler = SaeApibusAuthHandler(ACCESSKEY, SECRETKEY)
+>>> opener = urllib2.build_opener(apibus_handler)
+>>> print opener.open('http://g.sae.sina.com.cn/log/http/2015-06-18/1-access.log').read()
 
-Then you can use *opener* to request sae internal service such as segement,
-sms as you want.
+requests:
+
+>>> import requests
+>>> print requests.get('http://g.sae.sina.com.cn/log/http/2015-06-18/1-access.log?head/0/10|fields/ /1/2/3/4', auth=SaeApibusAuth(ACCESSKEY, SECRETKEY)).content
 """
 
 import hmac
 import base64
 import hashlib
 import time
+import urllib
 from urllib2 import BaseHandler, Request
 
-_APIBUS_ENDPOINT = 'http://g.apibus.io'
+_APIBUS_URL_PREFIX = 'http://g.sae.sina.com.cn/'
 
-class APIBusHandler(BaseHandler):
+class SaeApibusAuthHandler(BaseHandler):
     # apibus handler must be in front
     handler_order = 100
 
@@ -29,26 +33,52 @@ def __init__(self, accesskey, secretkey):
         self.accesskey = accesskey
         self.secretkey = secretkey
 
-    def _signature(self, headers):
-        msg = ''.join([k + v for k, v in headers])
-        h = hmac.new(self.secretkey, msg, hashlib.sha256).digest()
-        return base64.b64encode(h)
-
     def http_request(self, req):
         orig_url = req.get_full_url()
+        if not orig_url.startswith(_APIBUS_URL_PREFIX):
+            return req
+
         timestamp = str(int(time.time()))
         headers = [
-            ('Fetchurl', orig_url),
-            ('Timestamp', timestamp),
-            ('Accesskey', self.accesskey),
+            ('x-sae-timestamp', timestamp),
+            ('x-sae-accesskey', self.accesskey),
         ]
-        headers.append(('Signature', self._signature(headers)))
-        # Create a new request
-        _req = Request(_APIBUS_ENDPOINT, req.get_data(), origin_req_host=orig_url)
-        _req.headers.update(req.header_items())
-        _req.headers.update(headers)
-        _req.timeout = req.timeout
-        return _req
+        req.headers.update(headers)
+
+        method = req.get_method()
+        resource = urllib.unquote(req.get_full_url()[len(_APIBUS_URL_PREFIX)-1:])
+        sae_headers = [(k.lower(), v.lower()) for k, v in req.headers.items() if k.lower().startswith('x-sae-')]
+        req.add_header('Authorization', _signature(self.secretkey, method, resource, sae_headers))
+        return req
 
     https_request = http_request
 
+try:
+    from requests.auth import AuthBase
+
+    class SaeApibusAuth(AuthBase):
+        """Attaches HTTP Basic Authentication to the given Request object."""
+        def __init__(self, accesskey, secretkey):
+            self.accesskey = accesskey
+            self.secretkey = secretkey
+
+        def __call__(self, r):
+            timestamp = str(int(time.time()))
+            r.headers['x-sae-timestamp'] = timestamp
+            r.headers['x-sae-accesskey'] = self.accesskey
+            resource = urllib.unquote(r.url[len(_APIBUS_URL_PREFIX)-1:])
+            #resource = r.url[len(_APIBUS_URL_PREFIX)-1:]
+            sae_headers = [(k.lower(), v.lower()) for k, v in r.headers.items() if k.lower().startswith('x-sae-')]
+            r.headers['Authorization'] = _signature(self.secretkey, r.method, resource, sae_headers)
+            return r
+except ImportError:
+    # requests was not present!
+    pass
+
+def _signature(secret, method, resource, headers):
+    msgToSign = "\n".join([
+        method, resource,
+        "\n".join([(k + ":" + v) for k, v in sorted(headers)]),
+    ])
+    return "SAEV1_HMAC_SHA256 " + base64.b64encode(hmac.new(secret, msgToSign, hashlib.sha256).digest())
+
diff --git a/examples/apibus/demo.py b/examples/apibus/demo.py
deleted file mode 100644
index 4777456..0000000
--- a/examples/apibus/demo.py
+++ /dev/null
@@ -1,23 +0,0 @@
-# -*-coding: utf8 -*-
-
-import urllib
-import urllib2
-from apibus_handler import APIBusHandler
-
-ACCESSKEY = '你的某个开启了服务的应用的accesskey'
-SECRETKEY = '你的某个开启了服务的应用的secretkey'
-
-apibus_handler = APIBusHandler(ACCESSKEY, SECRETKEY)
-opener = urllib2.build_opener(apibus_handler)
-
-print 'call sae segment api:'
-chinese_text = '中文文本'
-url = 'http://segment.sae.sina.com.cn/urlclient.php?word_tag=1&encoding=UTF-8'
-payload = urllib.urlencode([('context', chinese_text),])
-print opener.open(url, payload).read()
-
-# sending sms
-print 'call sae sms api:'
-url = 'http://inno.smsinter.sina.com.cn/sae_sms_service/sendsms.php'
-payload = 'mobile=186****8203&msg=helloworld'
-print opener.open(url, payload).read()