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+.. _qtut_request_response:
+
+=======================================
+10: Handling Web Requests and Responses
+=======================================
+
+Web applications handle incoming requests and return outgoing responses.
+Pyramid makes working with requests and responses convenient and
+reliable.
+
+Objectives
+==========
+
+- Learn the background on Pyramid's choices for requests and responses
+
+- Grab data out of the request
+
+- Change information in the response headers
+
+Background
+==========
+
+Developing for the web means processing web requests. As this is a
+critical part of a web application, web developers need a robust,
+mature set of software for web requests and returning web
+responses.
+
+Pyramid has always fit nicely into the existing world of Python web
+development (virtual environments, packaging, scaffolding,
+first to embrace Python 3, etc.) For request handling, Pyramid turned
+to the well-regarded :term:`WebOb` Python library for request and
+response handling. In our example
+above, Pyramid hands ``hello_world`` a ``request`` that is
+:ref:`based on WebOb <webob_chapter>`.
+
+Steps
+=====
+
+#. First we copy the results of the ``view_classes`` step:
+
+   .. code-block:: bash
+
+    $ cd ..; cp -r view_classes request_response; cd request_response
+    $ $VENV/bin/python setup.py develop
+
+#. Simplify the routes in ``request_response/tutorial/__init__.py``:
+
+   .. literalinclude:: request_response/tutorial/__init__.py
+
+#. We only need one view in ``request_response/tutorial/views.py``:
+
+   .. literalinclude:: request_response/tutorial/views.py
+
+#. Update the tests in ``request_response/tutorial/tests.py``:
+
+   .. literalinclude:: request_response/tutorial/tests.py
+
+#. Now run the tests:
+
+   .. code-block:: bash
+
+    $ $VENV/bin/nosetests tutorial
+
+#. Run your Pyramid application with:
+
+   .. code-block:: bash
+
+    $ $VENV/bin/pserve development.ini --reload
+
+#. Open http://localhost:6543/ in your browser. You will be
+   redirected to http://localhost:6543/plain
+
+#. Open http://localhost:6543/plain?name=alice in your browser.
+
+Analysis
+========
+
+In this view class we have two routes and two views, with the first
+leading to the second by an HTTP redirect. Pyramid can
+:ref:`generate redirects <http_redirect>` by returning a
+special object from a view or raising a special exception.
+
+In this Pyramid view, we get the URL being visited from ``request.url``.
+Also, if you visited http://localhost:6543/plain?name=alice,
+the name is included in the body of the response::
+
+  URL http://localhost:6543/plain?name=alice with name: alice
+
+Finally, we set the response's content type and body, then return the
+Response.
+
+We updated the unit and functional tests to prove that our code
+does the redirection, but also handles sending and not sending
+``/plain?name``.
+
+Extra Credit
+============
+
+#. Could we also ``raise HTTPFound(location='/plain')`` instead of
+   returning it?  If so, what's the difference?
+
+.. seealso:: :ref:`webob_chapter`,
+   :ref:`generate redirects <http_redirect>`