add an app example using readline

examples/readline.py

@@ -0,0 +1,45 @@
+# -*- coding: utf-8 -
+#
+# This file is part of gunicorn released under the MIT license.
+# See the NOTICE for more information.
+#
+# Simple example of readline, reading from a stream then echoing the response
+#
+# Usage:
+#
+# Launch a server with the app in a terminal
+#
+#     $ gunicorn -w3 readline:app
+#
+# Then in another terminal launch the following command:
+#
+#     $ curl -XPOST -d'test\r\ntest2\r\n' -H"Transfer-Encoding: Chunked" http://localhost:8000
+
+
+
+from gunicorn import __version__
+
+
+def app(environ, start_response):
+    """Simplest possible application object"""
+    status = '200 OK'
+
+    response_headers = [
+        ('Content-type', 'text/plain'),
+        ('Transfer-Encoding', "chunked"),
+        ('X-Gunicorn-Version', __version__),
+        #("Test", "test тест"),
+    ]
+    start_response(status, response_headers)
+
+    body = environ['wsgi.input']
+
+    lines = []
+    while True:
+        line = body.readline()
+        if line == b"":
+            break
+        print(line)
+        lines.append(line)
+
+    return iter(lines)