diff --git a/examples/frameworks/django/testing/testing/apps/someapp/views.py b/examples/frameworks/django/testing/testing/apps/someapp/views.py
index d685b5bc..714abaaf 100755
--- a/examples/frameworks/django/testing/testing/apps/someapp/views.py
+++ b/examples/frameworks/django/testing/testing/apps/someapp/views.py
@@ -1,6 +1,7 @@
 # Create your views here.
 
 import csv
+import io
 import os
 from django import forms
 from django.http import HttpResponse
@@ -28,10 +29,15 @@ def home(request):
             subject = form.cleaned_data['subject']
             message = form.cleaned_data['message']
             f = request.FILES['f']
+
+
             if not hasattr(f, "fileno"):
                 size = len(f.read())
             else:
-                size = int(os.fstat(f.fileno())[6])
+                try:
+                    size = int(os.fstat(f.fileno())[6])
+                except io.UnsupportedOperation:
+                    size = len(f.read())
     else:
         form = MsgForm()
 
diff --git a/gunicorn/http/wsgi.py b/gunicorn/http/wsgi.py
index 5ea54f28..a32c2573 100644
--- a/gunicorn/http/wsgi.py
+++ b/gunicorn/http/wsgi.py
@@ -275,7 +275,7 @@ class Response(object):
         self.send_headers()
 
         if isinstance(arg, text_type):
-            arg = arg.decode('utf-8')
+            arg = arg.encode('utf-8')
 
         assert isinstance(arg, binary_type), "%r is not a byte." % arg
 
diff --git a/gunicorn/util.py b/gunicorn/util.py
index 142f6e10..f367d2e3 100644
--- a/gunicorn/util.py
+++ b/gunicorn/util.py
@@ -225,9 +225,9 @@ except ImportError:
 
 def write_chunk(sock, data):
     if isinstance(data, text_type):
-        data = data.decode('utf-8')
+        data = data.encode('utf-8')
     chunk_size = "%X\r\n" % len(data)
-    chunk = b"".join([chunk_size.decode('utf-8'), data, b"\r\n"])
+    chunk = b"".join([chunk_size.encode('utf-8'), data, b"\r\n"])
     sock.sendall(chunk)
 
 def write(sock, data, chunked=False):