re-added request_stream example.

examples/request_stream/client.py

@@ -0,0 +1,10 @@
+import requests
+
+# Warning: This is a heavy process.
+
+data = ""
+for i in range(1, 250000):
+    data += str(i)
+
+r = requests.post('http://0.0.0.0:8000/stream', data=data)
+print(r.text)

examples/request_stream/server.py

@@ -0,0 +1,65 @@
+from sanic import Sanic
+from sanic.views import CompositionView
+from sanic.views import HTTPMethodView
+from sanic.views import stream as stream_decorator
+from sanic.blueprints import Blueprint
+from sanic.response import stream, text
+
+bp = Blueprint('blueprint_request_stream')
+app = Sanic('request_stream')
+
+
+class SimpleView(HTTPMethodView):
+
+    @stream_decorator
+    async def post(self, request):
+        result = ''
+        while True:
+            body = await request.stream.get()
+            if body is None:
+                break
+            result += body.decode('utf-8')
+        return text(result)
+
+
+@app.post('/stream', stream=True)
+async def handler(request):
+    async def streaming(response):
+        while True:
+            body = await request.stream.get()
+            if body is None:
+                break
+            body = body.decode('utf-8').replace('1', 'A')
+            response.write(body)
+    return stream(streaming)
+
+
+@bp.put('/bp_stream', stream=True)
+async def bp_handler(request):
+    result = ''
+    while True:
+        body = await request.stream.get()
+        if body is None:
+            break
+        result += body.decode('utf-8').replace('1', 'A')
+    return text(result)
+
+
+async def post_handler(request):
+    result = ''
+    while True:
+        body = await request.stream.get()
+        if body is None:
+            break
+        result += body.decode('utf-8')
+    return text(result)
+
+app.blueprint(bp)
+app.add_route(SimpleView.as_view(), '/method_view')
+view = CompositionView()
+view.add(['POST'], post_handler, stream=True)
+app.add_route(view, '/composition_view')
+
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port=8000)