update

httplib/exceptions.py

@@ -28,20 +28,41 @@ class IncompleteResponse(HTTPException):
     def __init(self, cause):
         self.cause = cause
 
+
 class HTTPServerException(Exception):
     """ Base class for HTTP Server exceptions """
+    status_code: str
+    message: str
 
 
 class BadRequest(HTTPServerException):
     """ Malformed HTTP request"""
+    status_code = 400
+    message = "Bad Request"
+
 
 class MethodNotAllowed(HTTPServerException):
     """ Method is not allowed """
+    status_code = 405
+    message = "Method Not Allowed"
+
     def __init(self, allowed_methods):
         self.allowed_methods = allowed_methods
 
+
+class InternalServerError(HTTPServerException):
+    """ Internal Server Error """
+    status_code = 500
+    message = "Internal Server Error"
+
+
 class NotImplemented(HTTPServerException):
     """ Functionality not implemented """
+    status_code = 501
+    message = "Not Implemented"
+
 
 class NotFound(HTTPServerException):
-    """ Resource not found """
+    """ Resource not found """
+    status_code = 404
+    message = "Not Found"

httplib/retriever.py

@@ -97,8 +97,6 @@ class ContentLengthRetriever(Retriever):
             cur_payload_size += len(buffer)
             yield buffer
 
-        return b""
-
 
 class RawRetriever(Retriever):