Fixed #12502 -- Improved middleware diagram.

docs/topics/http/_images/middleware.graffle

@@ -0,0 +1,957 @@
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+	<integer>0</integer>
+	<key>ApplicationVersion</key>
+	<array>
+		<string>com.omnigroup.OmniGrafflePro</string>
+		<string>139.16.0.171715</string>
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+	<key>AutoAdjust</key>
+	<true/>
+	<key>BackgroundGraphic</key>
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+		<key>Style</key>
+		<dict>
+			<key>shadow</key>
+			<dict>
+				<key>Draws</key>
+				<string>NO</string>
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+			<key>stroke</key>
+			<dict>
+				<key>Draws</key>
+				<string>NO</string>
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+	<key>BaseZoom</key>
+	<integer>0</integer>
+	<key>CanvasOrigin</key>
+	<string>{0, 0}</string>
+	<key>ColumnAlign</key>
+	<integer>1</integer>
+	<key>ColumnSpacing</key>
+	<real>36</real>
+	<key>CreationDate</key>
+	<string>2012-12-09 18:55:12 +0000</string>
+	<key>Creator</key>
+	<string>Aymeric Augustin</string>
+	<key>DisplayScale</key>
+	<string>1.000 cm = 1.000 cm</string>
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+	<key>GraphicsList</key>
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+			<string>Bezier</string>
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+					<string>{-0.5, 0.5}</string>
+					<string>{-0.5, 0.5}</string>
+					<string>{-0.47560975609756084, 0}</string>
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+					<string>{-0.47560975609756084, 0}</string>
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+\f0\fs24 \cf0 view function}</string>
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+			<key>Rotation</key>
+			<real>270</real>
+			<key>Shape</key>
+			<string>AdjustableArrow</string>
+			<key>ShapeData</key>
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+				<key>width</key>
+				<real>27</real>
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+			<key>Style</key>
+			<dict>
+				<key>fill</key>
+				<dict>
+					<key>Color</key>
+					<dict>
+						<key>a</key>
+						<string>0.8</string>
+						<key>b</key>
+						<string>1</string>
+						<key>g</key>
+						<string>1</string>
+						<key>r</key>
+						<string>1</string>
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+				<key>shadow</key>
+				<dict>
+					<key>Color</key>
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+						<key>a</key>
+						<string>0.4</string>
+						<key>b</key>
+						<string>0</string>
+						<key>g</key>
+						<string>0</string>
+						<key>r</key>
+						<string>0</string>
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+					<key>Draws</key>
+					<string>NO</string>
+					<key>Fuzziness</key>
+					<real>0.0</real>
+					<key>ShadowVector</key>
+					<string>{0, 2}</string>
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+				<key>stroke</key>
+				<dict>
+					<key>Color</key>
+					<dict>
+						<key>b</key>
+						<string>0</string>
+						<key>g</key>
+						<string>0</string>
+						<key>r</key>
+						<string>1</string>
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+					<key>Pattern</key>
+					<integer>1</integer>
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+			<key>Text</key>
+			<dict>
+				<key>Text</key>
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+
+\f0\fs24 \cf2 process_exception}</string>
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+			<key>TextRelativeArea</key>
+			<string>{{0.125, 0.25}, {0.75, 0.5}}</string>
+			<key>isConnectedShape</key>
+			<true/>
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+		<dict>
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+			<integer>30</integer>
+			<key>Rotation</key>
+			<real>270</real>
+			<key>Shape</key>
+			<string>AdjustableArrow</string>
+			<key>ShapeData</key>
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+				<real>27</real>
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+			<key>Style</key>
+			<dict>
+				<key>fill</key>
+				<dict>
+					<key>Color</key>
+					<dict>
+						<key>a</key>
+						<string>0.8</string>
+						<key>b</key>
+						<string>1</string>
+						<key>g</key>
+						<string>1</string>
+						<key>r</key>
+						<string>1</string>
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+					<key>MiddleFraction</key>
+					<real>0.70634919404983521</real>
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+				<key>shadow</key>
+				<dict>
+					<key>Color</key>
+					<dict>
+						<key>a</key>
+						<string>0.4</string>
+						<key>b</key>
+						<string>0</string>
+						<key>g</key>
+						<string>0</string>
+						<key>r</key>
+						<string>0</string>
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+					<key>Draws</key>
+					<string>NO</string>
+					<key>Fuzziness</key>
+					<real>0.0</real>
+					<key>ShadowVector</key>
+					<string>{0, 2}</string>
+				</dict>
+				<key>stroke</key>
+				<dict>
+					<key>Color</key>
+					<dict>
+						<key>b</key>
+						<string>0</string>
+						<key>g</key>
+						<string>0.501961</string>
+						<key>r</key>
+						<string>0</string>
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+				</dict>
+			</dict>
+			<key>Text</key>
+			<dict>
+				<key>Text</key>
+				<string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
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+{\colortbl;\red255\green255\blue255;\red0\green128\blue0;}
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+
+\f0\fs24 \cf2 process_response}</string>
+			</dict>
+			<key>TextRelativeArea</key>
+			<string>{{0.125, 0.25}, {0.75, 0.5}}</string>
+			<key>isConnectedShape</key>
+			<true/>
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+		<dict>
+			<key>Bounds</key>
+			<string>{{283.5, 238.5}, {297, 36}}</string>
+			<key>Class</key>
+			<string>ShapedGraphic</string>
+			<key>ID</key>
+			<integer>29</integer>
+			<key>Rotation</key>
+			<real>270</real>
+			<key>Shape</key>
+			<string>AdjustableArrow</string>
+			<key>ShapeData</key>
+			<dict>
+				<key>width</key>
+				<real>27</real>
+			</dict>
+			<key>Style</key>
+			<dict>
+				<key>fill</key>
+				<dict>
+					<key>Color</key>
+					<dict>
+						<key>a</key>
+						<string>0.8</string>
+						<key>b</key>
+						<string>1</string>
+						<key>g</key>
+						<string>1</string>
+						<key>r</key>
+						<string>1</string>
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+					<key>MiddleFraction</key>
+					<real>0.70634919404983521</real>
+				</dict>
+				<key>shadow</key>
+				<dict>
+					<key>Color</key>
+					<dict>
+						<key>a</key>
+						<string>0.4</string>
+						<key>b</key>
+						<string>0</string>
+						<key>g</key>
+						<string>0</string>
+						<key>r</key>
+						<string>0</string>
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+					<key>Draws</key>
+					<string>NO</string>
+					<key>Fuzziness</key>
+					<real>0.0</real>
+					<key>ShadowVector</key>
+					<string>{0, 2}</string>
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+				<key>stroke</key>
+				<dict>
+					<key>Color</key>
+					<dict>
+						<key>b</key>
+						<string>0</string>
+						<key>g</key>
+						<string>0.501961</string>
+						<key>r</key>
+						<string>0</string>
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+					<key>Pattern</key>
+					<integer>1</integer>
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+			</dict>
+			<key>Text</key>
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+				<key>Text</key>
+				<string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
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+			</dict>
+			<key>TextRelativeArea</key>
+			<string>{{0.125, 0.25}, {0.75, 0.5}}</string>
+			<key>isConnectedShape</key>
+			<true/>
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+		<dict>
+			<key>Bounds</key>
+			<string>{{27, 243}, {288, 36}}</string>
+			<key>Class</key>
+			<string>ShapedGraphic</string>
+			<key>ID</key>
+			<integer>28</integer>
+			<key>Rotation</key>
+			<real>90</real>
+			<key>Shape</key>
+			<string>AdjustableArrow</string>
+			<key>ShapeData</key>
+			<dict>
+				<key>width</key>
+				<real>27</real>
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+			<key>Style</key>
+			<dict>
+				<key>fill</key>
+				<dict>
+					<key>Color</key>
+					<dict>
+						<key>a</key>
+						<string>0.8</string>
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+						<string>1</string>
+						<key>g</key>
+						<string>1</string>
+						<key>r</key>
+						<string>1</string>
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+					<key>MiddleFraction</key>
+					<real>0.70634919404983521</real>
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+				<key>shadow</key>
+				<dict>
+					<key>Color</key>
+					<dict>
+						<key>a</key>
+						<string>0.4</string>
+						<key>b</key>
+						<string>0</string>
+						<key>g</key>
+						<string>0</string>
+						<key>r</key>
+						<string>0</string>
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+					<key>Draws</key>
+					<string>NO</string>
+					<key>Fuzziness</key>
+					<real>0.0</real>
+					<key>ShadowVector</key>
+					<string>{0, 2}</string>
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+				<key>stroke</key>
+				<dict>
+					<key>Color</key>
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+						<key>b</key>
+						<string>0</string>
+						<key>g</key>
+						<string>0.501961</string>
+						<key>r</key>
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+			<key>Text</key>
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+				<key>Text</key>
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+
+\f0\fs24 \cf2 process_view}</string>
+			</dict>
+			<key>TextRelativeArea</key>
+			<string>{{0.125, 0.25}, {0.75, 0.5}}</string>
+			<key>isConnectedShape</key>
+			<true/>
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+		<dict>
+			<key>Bounds</key>
+			<string>{{-40.500000000767386, 220.49999999804004}, {297, 36}}</string>
+			<key>Class</key>
+			<string>ShapedGraphic</string>
+			<key>ID</key>
+			<integer>27</integer>
+			<key>Rotation</key>
+			<real>90</real>
+			<key>Shape</key>
+			<string>AdjustableArrow</string>
+			<key>ShapeData</key>
+			<dict>
+				<key>width</key>
+				<real>27</real>
+			</dict>
+			<key>Style</key>
+			<dict>
+				<key>fill</key>
+				<dict>
+					<key>Color</key>
+					<dict>
+						<key>a</key>
+						<string>0.8</string>
+						<key>b</key>
+						<string>1</string>
+						<key>g</key>
+						<string>1</string>
+						<key>r</key>
+						<string>1</string>
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+					<key>MiddleFraction</key>
+					<real>0.70634919404983521</real>
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+				<key>shadow</key>
+				<dict>
+					<key>Color</key>
+					<dict>
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+						<string>0.4</string>
+						<key>b</key>
+						<string>0</string>
+						<key>g</key>
+						<string>0</string>
+						<key>r</key>
+						<string>0</string>
+					</dict>
+					<key>Draws</key>
+					<string>NO</string>
+					<key>Fuzziness</key>
+					<real>0.0</real>
+					<key>ShadowVector</key>
+					<string>{0, 2}</string>
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+						<string>0</string>
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+						<key>r</key>
+						<string>0</string>
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+			<string>{{0.125, 0.25}, {0.75, 0.5}}</string>
+			<key>isConnectedShape</key>
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+			<string>{{360, 63}, {144, 27}}</string>
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+			<string>ShapedGraphic</string>
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+				<string>{-1, 0}</string>
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+			<key>Shape</key>
+			<string>Rectangle</string>
+			<key>Text</key>
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+\f0\fs24 \cf0 HttpResponse}</string>
+			</dict>
+		</dict>
+		<dict>
+			<key>Bounds</key>
+			<string>{{72, 63}, {144, 27}}</string>
+			<key>Class</key>
+			<string>ShapedGraphic</string>
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+			<integer>11</integer>
+			<key>Magnets</key>
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+				<string>{0, -1}</string>
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+				<string>{-1, 0}</string>
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+			<key>Shape</key>
+			<string>Rectangle</string>
+			<key>Text</key>
+			<dict>
+				<key>Text</key>
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+\f0\fs24 \cf0 HttpRequest}</string>
+			</dict>
+		</dict>
+		<dict>
+			<key>Bounds</key>
+			<string>{{72, 324}, {432, 27}}</string>
+			<key>Class</key>
+			<string>ShapedGraphic</string>
+			<key>ID</key>
+			<integer>10</integer>
+			<key>Magnets</key>
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+				<string>{0, -1}</string>
+				<string>{1, 0}</string>
+				<string>{-1, 0}</string>
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+			<key>Shape</key>
+			<string>Rectangle</string>
+			<key>Style</key>
+			<dict>
+				<key>fill</key>
+				<dict>
+					<key>FillType</key>
+					<integer>2</integer>
+					<key>GradientAngle</key>
+					<real>90</real>
+					<key>GradientColor</key>
+					<dict>
+						<key>w</key>
+						<string>0.666667</string>
+					</dict>
+				</dict>
+				<key>stroke</key>
+				<dict>
+					<key>CornerRadius</key>
+					<real>5</real>
+				</dict>
+			</dict>
+			<key>Text</key>
+			<dict>
+				<key>Text</key>
+				<string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
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+\pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\pardirnatural\qc
+
+\f0\fs24 \cf0 MessageMiddleware}</string>
+			</dict>
+		</dict>
+		<dict>
+			<key>Bounds</key>
+			<string>{{72, 279}, {432, 27}}</string>
+			<key>Class</key>
+			<string>ShapedGraphic</string>
+			<key>ID</key>
+			<integer>9</integer>
+			<key>Magnets</key>
+			<array>
+				<string>{0, 1}</string>
+				<string>{0, -1}</string>
+				<string>{1, 0}</string>
+				<string>{-1, 0}</string>
+			</array>
+			<key>Shape</key>
+			<string>Rectangle</string>
+			<key>Style</key>
+			<dict>
+				<key>fill</key>
+				<dict>
+					<key>FillType</key>
+					<integer>2</integer>
+					<key>GradientAngle</key>
+					<real>90</real>
+					<key>GradientColor</key>
+					<dict>
+						<key>w</key>
+						<string>0.666667</string>
+					</dict>
+				</dict>
+				<key>stroke</key>
+				<dict>
+					<key>CornerRadius</key>
+					<real>5</real>
+				</dict>
+			</dict>
+			<key>Text</key>
+			<dict>
+				<key>Text</key>
+				<string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
+\cocoascreenfonts1{\fonttbl\f0\fmodern\fcharset0 Courier;}
+{\colortbl;\red255\green255\blue255;}
+\pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\pardirnatural\qc
+
+\f0\fs24 \cf0 AuthenticationMiddleware}</string>
+			</dict>
+		</dict>
+		<dict>
+			<key>Bounds</key>
+			<string>{{72, 234}, {432, 27}}</string>
+			<key>Class</key>
+			<string>ShapedGraphic</string>
+			<key>ID</key>
+			<integer>8</integer>
+			<key>Magnets</key>
+			<array>
+				<string>{0, 1}</string>
+				<string>{0, -1}</string>
+				<string>{1, 0}</string>
+				<string>{-1, 0}</string>
+			</array>
+			<key>Shape</key>
+			<string>Rectangle</string>
+			<key>Style</key>
+			<dict>
+				<key>fill</key>
+				<dict>
+					<key>FillType</key>
+					<integer>2</integer>
+					<key>GradientAngle</key>
+					<real>90</real>
+					<key>GradientColor</key>
+					<dict>
+						<key>w</key>
+						<string>0.666667</string>
+					</dict>
+				</dict>
+				<key>stroke</key>
+				<dict>
+					<key>CornerRadius</key>
+					<real>5</real>
+				</dict>
+			</dict>
+			<key>Text</key>
+			<dict>
+				<key>Text</key>
+				<string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
+\cocoascreenfonts1{\fonttbl\f0\fmodern\fcharset0 Courier;}
+{\colortbl;\red255\green255\blue255;}
+\pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\pardirnatural\qc
+
+\f0\fs24 \cf0 CsrfViewMiddleware}</string>
+			</dict>
+		</dict>
+		<dict>
+			<key>Bounds</key>
+			<string>{{72, 189}, {432, 27}}</string>
+			<key>Class</key>
+			<string>ShapedGraphic</string>
+			<key>ID</key>
+			<integer>7</integer>
+			<key>Magnets</key>
+			<array>
+				<string>{0, 1}</string>
+				<string>{0, -1}</string>
+				<string>{1, 0}</string>
+				<string>{-1, 0}</string>
+			</array>
+			<key>Shape</key>
+			<string>Rectangle</string>
+			<key>Style</key>
+			<dict>
+				<key>fill</key>
+				<dict>
+					<key>FillType</key>
+					<integer>2</integer>
+					<key>GradientAngle</key>
+					<real>90</real>
+					<key>GradientColor</key>
+					<dict>
+						<key>w</key>
+						<string>0.666667</string>
+					</dict>
+				</dict>
+				<key>stroke</key>
+				<dict>
+					<key>CornerRadius</key>
+					<real>5</real>
+				</dict>
+			</dict>
+			<key>Text</key>
+			<dict>
+				<key>Text</key>
+				<string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
+\cocoascreenfonts1{\fonttbl\f0\fmodern\fcharset0 Courier;}
+{\colortbl;\red255\green255\blue255;}
+\pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\pardirnatural\qc
+
+\f0\fs24 \cf0 SessionMiddleware}</string>
+			</dict>
+		</dict>
+		<dict>
+			<key>Bounds</key>
+			<string>{{72, 144}, {432, 27}}</string>
+			<key>Class</key>
+			<string>ShapedGraphic</string>
+			<key>ID</key>
+			<integer>6</integer>
+			<key>Magnets</key>
+			<array>
+				<string>{0, 1}</string>
+				<string>{0, -1}</string>
+				<string>{1, 0}</string>
+				<string>{-1, 0}</string>
+			</array>
+			<key>Shape</key>
+			<string>Rectangle</string>
+			<key>Style</key>
+			<dict>
+				<key>fill</key>
+				<dict>
+					<key>FillType</key>
+					<integer>2</integer>
+					<key>GradientAngle</key>
+					<real>90</real>
+					<key>GradientColor</key>
+					<dict>
+						<key>w</key>
+						<string>0.666667</string>
+					</dict>
+				</dict>
+				<key>stroke</key>
+				<dict>
+					<key>CornerRadius</key>
+					<real>5</real>
+				</dict>
+			</dict>
+			<key>Text</key>
+			<dict>
+				<key>Text</key>
+				<string>{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf340
+\cocoascreenfonts1{\fonttbl\f0\fmodern\fcharset0 Courier;}
+{\colortbl;\red255\green255\blue255;}
+\pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\pardirnatural\qc
+
+\f0\fs24 \cf0 CommonMiddleware}</string>
+			</dict>
+		</dict>
+	</array>
+	<key>GridInfo</key>
+	<dict>
+		<key>ShowsGrid</key>
+		<string>YES</string>
+		<key>SnapsToGrid</key>
+		<string>YES</string>
+	</dict>
+	<key>GuidesLocked</key>
+	<string>NO</string>
+	<key>GuidesVisible</key>
+	<string>YES</string>
+	<key>HPages</key>
+	<integer>1</integer>
+	<key>ImageCounter</key>
+	<integer>1</integer>
+	<key>KeepToScale</key>
+	<false/>
+	<key>Layers</key>
+	<array>
+		<dict>
+			<key>Lock</key>
+			<string>NO</string>
+			<key>Name</key>
+			<string>Calque 1</string>
+			<key>Print</key>
+			<string>YES</string>
+			<key>View</key>
+			<string>YES</string>
+		</dict>
+	</array>
+	<key>LayoutInfo</key>
+	<dict>
+		<key>Animate</key>
+		<string>NO</string>
+		<key>circoMinDist</key>
+		<real>18</real>
+		<key>circoSeparation</key>
+		<real>0.0</real>
+		<key>layoutEngine</key>
+		<string>dot</string>
+		<key>neatoSeparation</key>
+		<real>0.0</real>
+		<key>twopiSeparation</key>
+		<real>0.0</real>
+	</dict>
+	<key>LinksVisible</key>
+	<string>NO</string>
+	<key>MagnetsVisible</key>
+	<string>NO</string>
+	<key>MasterSheets</key>
+	<array/>
+	<key>ModificationDate</key>
+	<string>2012-12-09 19:48:54 +0000</string>
+	<key>Modifier</key>
+	<string>Aymeric Augustin</string>
+	<key>NotesVisible</key>
+	<string>NO</string>
+	<key>Orientation</key>
+	<integer>2</integer>
+	<key>OriginVisible</key>
+	<string>NO</string>
+	<key>PageBreaks</key>
+	<string>YES</string>
+	<key>PrintInfo</key>
+	<dict>
+		<key>NSBottomMargin</key>
+		<array>
+			<string>float</string>
+			<string>41</string>
+		</array>
+		<key>NSHorizonalPagination</key>
+		<array>
+			<string>coded</string>
+			<string>BAtzdHJlYW10eXBlZIHoA4QBQISEhAhOU051bWJlcgCEhAdOU1ZhbHVlAISECE5TT2JqZWN0AIWEASqEhAFxlwCG</string>
+		</array>
+		<key>NSLeftMargin</key>
+		<array>
+			<string>float</string>
+			<string>18</string>
+		</array>
+		<key>NSPaperSize</key>
+		<array>
+			<string>size</string>
+			<string>{595.28997802734375, 841.8900146484375}</string>
+		</array>
+		<key>NSPrintReverseOrientation</key>
+		<array>
+			<string>int</string>
+			<string>0</string>
+		</array>
+		<key>NSRightMargin</key>
+		<array>
+			<string>float</string>
+			<string>18</string>
+		</array>
+		<key>NSTopMargin</key>
+		<array>
+			<string>float</string>
+			<string>18</string>
+		</array>
+	</dict>
+	<key>PrintOnePage</key>
+	<false/>
+	<key>ReadOnly</key>
+	<string>NO</string>
+	<key>RowAlign</key>
+	<integer>1</integer>
+	<key>RowSpacing</key>
+	<real>36</real>
+	<key>SheetTitle</key>
+	<string>Canevas 1</string>
+	<key>SmartAlignmentGuidesActive</key>
+	<string>YES</string>
+	<key>SmartDistanceGuidesActive</key>
+	<string>YES</string>
+	<key>UniqueID</key>
+	<integer>1</integer>
+	<key>UseEntirePage</key>
+	<false/>
+	<key>VPages</key>
+	<integer>1</integer>
+	<key>WindowInfo</key>
+	<dict>
+		<key>CurrentSheet</key>
+		<integer>0</integer>
+		<key>ExpandedCanvases</key>
+		<array/>
+		<key>Frame</key>
+		<string>{{248, 4}, {694, 874}}</string>
+		<key>ListView</key>
+		<true/>
+		<key>OutlineWidth</key>
+		<integer>142</integer>
+		<key>RightSidebar</key>
+		<false/>
+		<key>ShowRuler</key>
+		<true/>
+		<key>Sidebar</key>
+		<true/>
+		<key>SidebarWidth</key>
+		<integer>120</integer>
+		<key>VisibleRegion</key>
+		<string>{{0, 0}, {559, 735}}</string>
+		<key>Zoom</key>
+		<real>1</real>
+		<key>ZoomValues</key>
+		<array>
+			<array>
+				<string>Canevas 1</string>
+				<real>1</real>
+				<real>1</real>
+			</array>
+		</array>
+	</dict>
+</dict>
+</plist>

docs/topics/http/middleware.txt

@@ -32,17 +32,20 @@ created by :djadmin:`django-admin.py startproject <startproject>`::
         'django.contrib.messages.middleware.MessageMiddleware',
     )
 
-During the request phases (:meth:`process_request` and :meth:`process_view`
-middleware), Django applies middleware in the order it's defined in
+During the request phases (:meth:`process_request` and :meth:`process_view`),
+Django applies middleware in the order it's defined in
 :setting:`MIDDLEWARE_CLASSES`, top-down. During the response phases
-(:meth:`process_response` and :meth:`process_exception` middleware), the
-classes are applied in reverse order, from the bottom up. You can think of it
-like an onion: each middleware class is a "layer" that wraps the view:
-
-.. image:: _images/middleware.png
-   :width: 502
-   :height: 417
-   :alt: Middleware application order.
+(:meth:`process_template_response`, :meth:`process_response`, and
+:meth:`process_exception`), the classes are applied in reverse order, from the
+bottom up.
+
+.. image:: _images/middleware.svg
+   :alt: middleware application order
+   :width: 480
+   :height: 408
+
+If you prefer, you can also think of it like an onion: each middleware class
+is a "layer" that wraps the view.
 
 A Django installation doesn't require any middleware -- e.g.,
 :setting:`MIDDLEWARE_CLASSES` can be empty, if you'd like -- but it's strongly