1 files changed, 24 insertions, 1 deletions
diff --git a/requests/structures.py b/requests/structures.py
index 3746754..6c2e0b2 100644
--- a/requests/structures.py
+++ b/requests/structures.py
@@ -8,6 +8,28 @@ Data structures that power Requests.
 
 """
 
+import os
+from itertools import islice
+
+class IteratorProxy(object):
+    """docstring for IteratorProxy"""
+    def __init__(self, i):
+        self.i = i
+        # self.i = chain.from_iterable(i)
+
+    def __iter__(self):
+        return self.i
+
+    def __len__(self):
+        if hasattr(self.i, '__len__'):
+            return len(self.i)
+        if hasattr(self.i, 'len'):
+            return self.i.len
+        if hasattr(self.i, 'fileno'):
+            return os.fstat(self.i.fileno()).st_size
+
+    def read(self, n):
+        return "".join(islice(self.i, None, n))
 
 class CaseInsensitiveDict(dict):
     """Case-insensitive Dictionary
@@ -30,7 +52,7 @@ class CaseInsensitiveDict(dict):
         self._clear_lower_keys()
 
     def __delitem__(self, key):
-        dict.__delitem__(self, key)
+        dict.__delitem__(self, self.lower_keys.get(key.lower(), key))
         self._lower_keys.clear()
 
     def __contains__(self, key):
@@ -47,6 +69,7 @@ class CaseInsensitiveDict(dict):
         else:
             return default
 
+
 class LookupDict(dict):
     """Dictionary lookup object."""