diff --git a/eventlet/greenlib.py b/eventlet/greenlib.py
index 1c3f995..8de50e0 100644
--- a/eventlet/greenlib.py
+++ b/eventlet/greenlib.py
@@ -1,3 +1,23 @@
+# Copyright (c) 2005-2006, Bob Ippolito
+# Copyright (c) 2007, Linden Research, Inc.
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
 from eventlet.api import Greenlet
 
 class SwitchingToDeadGreenlet(Exception):
diff --git a/greentest/wsgi_test.py b/greentest/wsgi_test.py
index 3fe4646..2b043a9 100644
--- a/greentest/wsgi_test.py
+++ b/greentest/wsgi_test.py
@@ -19,6 +19,7 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 
+
 import cgi
 import os
 from unittest import TestCase, main
@@ -291,9 +292,23 @@ class TestHttpd(TestCase):
         sock = api.ssl_listener(('', 4201), certificate_file, private_key_file)
 
         api.spawn(wsgi.server, sock, wsgi_app)
-
+    
         result = httpc.post("https://localhost:4201/foo", "abc")
         self.assertEquals(result, 'abc')
+        
+    def test_013_empty_return(self):
+        from eventlet import httpc
+        def wsgi_app(environ, start_response):
+            start_response("200 OK", [])
+            return [""]
+    
+        certificate_file = os.path.join(os.path.dirname(__file__), 'test_server.crt')
+        private_key_file = os.path.join(os.path.dirname(__file__), 'test_server.key')
+        sock = api.ssl_listener(('', 4202), certificate_file, private_key_file)
+        api.spawn(wsgi.server, sock, wsgi_app)
+        
+        res = httpc.get("https://localhost:4202/foo")
+        self.assertEquals(res, '')
 
     def test_013_empty_return(self):
         from eventlet import httpc