1 files changed, 29 insertions, 1 deletions
diff --git a/requests/exceptions.py b/requests/exceptions.py
index c7b98e6..22207e3 100644
--- a/requests/exceptions.py
+++ b/requests/exceptions.py
@@ -8,24 +8,52 @@ This module contains the set of Requests' exceptions.
 
 """
 
-class RequestException(Exception):
+
+class RequestException(IOError):
     """There was an ambiguous exception that occurred while handling your
     request."""
 
+
 class HTTPError(RequestException):
     """An HTTP error occurred."""
 
+    def __init__(self, *args, **kwargs):
+        """ Initializes HTTPError with optional `response` object. """
+        self.response = kwargs.pop('response', None)
+        super(HTTPError, self).__init__(*args, **kwargs)
+
+
 class ConnectionError(RequestException):
     """A Connection error occurred."""
 
+
 class SSLError(ConnectionError):
     """An SSL error occurred."""
 
+
 class Timeout(RequestException):
     """The request timed out."""
 
+
 class URLRequired(RequestException):
     """A valid URL is required to make a request."""
 
+
 class TooManyRedirects(RequestException):
     """Too many redirects."""
+
+
+class MissingSchema(RequestException, ValueError):
+    """The URL schema (e.g. http or https) is missing."""
+
+
+class InvalidSchema(RequestException, ValueError):
+    """See defaults.py for valid schemas."""
+
+
+class InvalidURL(RequestException, ValueError):
+    """ The URL provided was somehow invalid. """
+
+
+class ChunkedEncodingError(RequestException):
+    """The server declared chunked encoding but sent an invalid chunk."""