add http_file example to python example.

examples/python/conf/python.conf

@@ -5,6 +5,7 @@ load		./python.so onload
 # import both python modules.
 python_import	src/index.py onload
 python_import	src/websockets.py
+python_import	src/upload.py
 
 bind		127.0.0.1 8888
 
@@ -33,6 +34,7 @@ domain * {
 	static	/json	json_parse
 	static	/state	state_test
 	static	/ws	ws_connect
+	static	/upload	upload
 
 	# Use the builtin asset_serve_* to serve frontend HTML.
 	static	/wspage	asset_serve_frontend_html

examples/python/src/upload.py

@@ -0,0 +1,59 @@
+#
+# Copyright (c) 2017 Joris Vink <joris@coders.se>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+
+# Processing incoming files in a multipart form.
+
+import sys
+import kore
+
+#
+# This handler receives a POST with a multipart data.
+# It extracts the file called "file" and writes it to a new file.
+#
+def upload(req):
+	# We only allow POST's.
+	if req.method is not kore.METHOD_POST:
+		req.response_header("allow", "post")
+		req.response(400, b'')
+		return kore.RESULT_OK
+
+	# Ask kore to parse incoming multipart data.
+	req.populate_multi()
+
+	# Lookup the file called "file".
+	file = req.file_lookup("file")
+	if not file:
+		req.response(400, b'')
+		return kore.RESULT_OK
+
+	kore.log(kore.LOG_INFO,
+	    "%s (%s, filename=%s)" % (file, file.name, file.filename))
+
+	# Open target file.
+	f = open(file.filename, "wb")
+	if not f:
+		req.response(500, b'')
+		return kore.RESULT_OK
+
+	# Read all data from incoming file and write it to the output file.
+	len = True
+	while len:
+		len, bytes = file.read(1024)
+		kore.log(kore.LOG_INFO, "got %d bytes of data" % len)
+		f.write(bytes)
+
+	req.response(200, b'')
+	return kore.RESULT_OK