Add asyncio file upload example

examples/uploads/uploads.py

@@ -1,6 +1,7 @@
-from microdot import Microdot, send_file
+from microdot import Microdot, send_file, Request
 
 app = Microdot()
+Request.max_content_length = 1024 * 1024  # 1MB (change as needed)
 
 
 @app.get('/')
@@ -30,4 +31,4 @@ def upload(request):
 
 
 if __name__ == '__main__':
-    app.run()
+    app.run(debug=True)

examples/uploads/uploads_async.py

@@ -0,0 +1,34 @@
+from microdot_asyncio import Microdot, send_file, Request
+
+app = Microdot()
+Request.max_content_length = 1024 * 1024  # 1MB (change as needed)
+
+
+@app.get('/')
+async def index(request):
+    return send_file('index.html')
+
+
+@app.post('/upload')
+async def upload(request):
+    # obtain the filename and size from request headers
+    filename = request.headers['Content-Disposition'].split(
+        'filename=')[1].strip('"')
+    size = int(request.headers['Content-Length'])
+
+    # sanitize the filename
+    filename = filename.replace('/', '_')
+
+    # write the file to the files directory in 1K chunks
+    with open('files/' + filename, 'wb') as f:
+        while size > 0:
+            chunk = await request.stream.read(min(size, 1024))
+            f.write(chunk)
+            size -= len(chunk)
+
+    print('Successfully saved file: ' + filename)
+    return ''
+
+
+if __name__ == '__main__':
+    app.run(debug=True)