Change the behavior of url dispatching with quote characters.

The quoted characters of the URL will not be significant during url dispatching
but will be decoded after the matching.

For example, with this route:

```
@asyncio.coroutine
def handler(request):
    return web.Response(body=repr(request.match_info))

app = Application(loop=loop)
app.router.add_route('GET', '/{route}', handler)
```

The following query will generate this match_info:

```
curl -I http://127.0.0.1:8080/route%2Fslash
HTTP/1.1 200 OK
...
<MatchInfo {'route': 'route/slash'}: <DynamicRoute [*] /{route} -> <function handler at 0x10b888158>>
```

CHANGES.txt

@@ -19,6 +19,10 @@ CHANGES
 
 - Allow gzip compression in high-level server response interface #403
 
+- Make UrlDispatcher ignore quoted characters during url matching #414
+Backward-compatibility warning: this may change the url matched by your queries
+if they send quoted characted (like %2F for /).
+
 
 0.16.5 (06-13-2015)
 -------------------

CONTRIBUTORS.txt

@@ -14,6 +14,7 @@ Anton Kasyanov
 Arthur Darcet
 Ben Bader
 Brian C. Lane
+Boris Feld
 Chris Laws
 Daniel Nelson
 David Michael Brown

aiohttp/web_reqrep.py

@@ -179,12 +179,21 @@ def _splitted_path(self):
         return urlsplit(self._path_qs)
 
     @property
+    def raw_path(self):
+        """ The URL including raw *PATH INFO* without the host or scheme.
+        Warning, the path is unquoted and may contains non valid URL characters.
+
+        E.g., ``/my%2Fpath%7Cwith%21some%25strange%24characters``
+        """
+        return self._splitted_path.path
+
+    @reify
     def path(self):
         """The URL including *PATH INFO* without the host or scheme.
 
         E.g., ``/app/blog``
         """
-        return unquote(self._splitted_path.path)
+        return unquote(self.raw_path)
 
     @reify
     def query_string(self):

aiohttp/web_urldispatcher.py

@@ -10,7 +10,7 @@
 import os
 import inspect
 
-from urllib.parse import urlencode
+from urllib.parse import urlencode, unquote
 
 from . import hdrs
 from .abc import AbstractRouter, AbstractMatchInfo
@@ -304,7 +304,7 @@ def __init__(self):
 
     @asyncio.coroutine
     def resolve(self, request):
-        path = request.path
+        path = request.raw_path
         method = request.method
         allowed_methods = set()
 
@@ -315,6 +315,9 @@ def resolve(self, request):
 
             route_method = route.method
             if route_method == method or route_method == hdrs.METH_ANY:
+                # Unquote separate matching parts
+                match_dict = {key: unquote(value) for key, value in
+                              match_dict.items()}
                 return UrlMappingMatchInfo(match_dict, route)
 
             allowed_methods.add(route_method)

docs/web_reference.rst

@@ -72,6 +72,15 @@ first positional parameter.
 
       Read-only :class:`str` property.
 
+   .. attribute:: raw_path
+
+      The URL including raw *PATH INFO* without the host or scheme.
+      Warning, the path is unquoted and may contains non valid URL characters.
+      e.g.,
+      ``/my%2Fpath%7Cwith%21some%25strange%24characters``
+
+      Read-only :class:`str` property.
+
    .. attribute:: query_string
 
       The query string in the URL, e.g., ``id=10``
@@ -966,6 +975,11 @@ Router is any object that implements :class:`AbstractRouter` interface.
    *Named route* can be retrieved by ``app.router[name]`` call, checked for
    existence by ``name in app.router`` etc.
 
+   You can tell UrlDispatcher to use unquoted_path for dispatching instead
+   of quoted path by passing ``unquoted_path=true``. It's necessary if you try
+   to call the server with paths including ``/`` as they may interfere with
+   normal route matching. You will be then responsible for unquoting the path.
+
    .. seealso:: :ref:`Route classes <aiohttp-web-route>`
 
    .. method:: add_route(method, path, handler, *, \

tests/test_urldispatch.py

@@ -2,6 +2,7 @@
 import os
 import unittest
 from unittest import mock
+from urllib.parse import unquote
 import aiohttp.web
 from aiohttp import hdrs
 from aiohttp.web import (UrlDispatcher, Request, Response,
@@ -528,3 +529,19 @@ def go():
             self.assertEqual({'name': 'file', 'ext': 'html'}, match_info)
 
         self.loop.run_until_complete(go())
+
+    def test_dynamic_match_unquoted_path(self):
+
+        @asyncio.coroutine
+        def go():
+            handler = self.make_handler()
+            self.router.add_route('GET', '/{path}/{subpath}', handler)
+            resource_id = 'my%2Fpath%7Cwith%21some%25strange%24characters'
+            req = self.make_request('GET', '/path/{0}'.format(resource_id))
+            match_info = yield from self.router.resolve(req)
+            self.assertEqual(match_info, {
+                'path': 'path',
+                'subpath': unquote(resource_id)
+            })
+
+        self.loop.run_until_complete(go())