def __call__(self, environ, start_response):
request = self.request
callback = request.GET.get('c', None)
if callback is None:
self.status = 500
self.body = '"callback" parameter required'
return super(HTMLFileTransport, self).__call__(
environ, start_response)
write = start_response(self.status, self.headerlist)
prelude = PRELUDE % callback.encode('UTF-8')
prelude += ' ' * 1024
write(prelude)
timing = self.timing
session = self.session
if session.state == STATE_NEW:
write('<script>\np("o");\n</script>\r\n')
session.open()
size = 0
try:
while True:
try:
message = [session.get_transport_message(timeout=timing)]
except Empty:
message = HEARTBEAT
session.heartbeat()
else:
message = message_frame(message)
if session.state == STATE_CLOSING:
try:
write("<script>\np(%s);\n</script>\r\n" %
encode(close_frame('session closed','connection expired')))
except Exception as e:
print "Error closing html streaming sockjs protocol"
session.closed()
break
message = "<script>\np(%s);\n</script>\r\n" % encode(message)
try:
write(message)
except:
session.closed()
raise StopStreaming()
size += len(message)
if size > self.maxsize:
break
finally:
session.release()
return []
def __call__(self, environ, start_response):
request = self.request
callback = request.GET.get('c', None)
if callback is None:
self.status = 500
self.body = '"callback" parameter required'
return super(HTMLFileTransport,
self).__call__(environ, start_response)
write = start_response(self.status, self.headerlist)
prelude = PRELUDE % callback
prelude += ' ' * 1024
write(prelude)
timing = self.timing
session = self.session
if session.state == STATE_NEW:
write('<script>\np("o");\n</script>\r\n')
session.open()
size = 0
try:
while True:
try:
message = [session.get_transport_message(timeout=timing)]
except Empty:
message = HEARTBEAT
session.heartbeat()
else:
message = message_frame(message)
if session.state == STATE_CLOSING:
write("<script>\np(%s);\n</script>\r\n" %
encode(close_frame('Go away!')))
session.closed()
break
message = "<script>\np(%s);\n</script>\r\n" % encode(message)
try:
write(message)
except:
session.closed()
raise StopStreaming()
size += len(message)
if size > self.maxsize:
break
finally:
session.release()
return []
def JSONPolling(session, request):
meth = request.method
response = request.response
response.headers['Content-Type'] = 'application/javascript; charset=UTF-8'
response.headerlist.append(
('Cache-Control', 'no-store, no-cache, must-revalidate, max-age=0'))
session_cookie(request)
if session.state == STATE_NEW:
callback = request.GET.get('c', None)
if callback is None:
return HTTPServerError('"callback" parameter required')
response.text = '%s("o");\r\n' % callback
session.open()
session.release()
elif meth == "GET":
callback = request.GET.get('c', None)
if callback is None:
return HTTPServerError('"callback" parameter required')
if session.state in (STATE_CLOSING, STATE_CLOSED):
response.text = "%s(%s);\r\n" % (
callback, encode(close_frame(3000, 'Go away!')))
if session.state == STATE_CLOSING:
session.closed()
else:
messages = []
try:
messages.append(session.get_transport_message(timeout=timing))
while True:
try:
messages.append(
session.get_transport_message(block=False))
except Empty:
break
except Empty:
messages = HEARTBEAT
session.heartbeat()
else:
messages = message_frame(messages)
response.text = "%s(%s);\r\n" % (callback, encode(messages))
session.release()
elif meth == "POST":
data = request.body_file.read()
ctype = request.headers.get('Content-Type', '').lower()
if ctype == 'application/x-www-form-urlencoded':
if not data.startswith('d='):
return HTTPServerError("Payload expected.")
data = unquote_plus(data[2:])
if not data:
return HTTPServerError("Payload expected.")
try:
messages = decode(data)
except:
return HTTPServerError("Broken JSON encoding.")
for msg in messages:
session.message(msg)
response.status = 200
response.headers['Content-Type'] = 'text/plain; charset=UTF-8'
response.body = 'ok'
else:
raise Exception("No support for such method: %s" % meth)
return response
def test_encode(self):
from pyramid_sockjs import protocol
self.assertEqual(protocol.encode({}), json.dumps({}))
self.assertEqual(protocol.encode(['test']), json.dumps(['test']))
self.assertEqual(protocol.encode('"test"'), json.dumps('"test"'))
def test_message_frame_endline(self):
from pyramid_sockjs import protocol
msg = protocol.message_frame(['msg1', 'msg2'], '\n')
self.assertEqual(msg, 'a%s\n' % protocol.encode(['msg1', 'msg2']))
def test_encode(self):
from pyramid_sockjs import protocol
self.assertEqual(protocol.encode({}), json.dumps({}))
self.assertEqual(protocol.encode(['test']), json.dumps(['test']))
self.assertEqual(protocol.encode('"test"'), json.dumps('"test"'))
def test_message_frame_endline(self):
from pyramid_sockjs import protocol
msg = protocol.message_frame(['msg1', 'msg2'], '\n')
self.assertEqual(msg, 'a%s\n'%protocol.encode(['msg1', 'msg2']))
def JSONPolling(session, request):
meth = request.method
response = request.response
response.headers['Content-Type'] = 'application/javascript; charset=UTF-8'
response.headerlist.append(
('Cache-Control', 'no-store, no-cache, must-revalidate, max-age=0'))
session_cookie(request)
if session.state == STATE_NEW:
callback = request.GET.get('c', None)
if callback is None:
return HTTPServerError('"callback" parameter required')
response.text = '%s("o");\r\n' % callback
session.open()
session.release()
elif meth == "GET":
callback = request.GET.get('c', None)
if callback is None:
return HTTPServerError('"callback" parameter required')
if session.state in (STATE_CLOSING, STATE_CLOSED):
response.text = "%s(%s);\r\n"%(
callback, encode(close_frame(3000, 'Go away!')))
if session.state == STATE_CLOSING:
session.closed()
else:
messages = []
try:
messages.append(session.get_transport_message(timeout=timing))
while True:
try:
messages.append(
session.get_transport_message(block=False))
except Empty:
break
except Empty:
messages = HEARTBEAT
session.heartbeat()
else:
messages = message_frame(messages)
response.text = "%s(%s);\r\n"%(callback, encode(messages))
session.release()
elif meth == "POST":
data = request.body_file.read()
ctype = request.headers.get('Content-Type', '').lower()
if ctype == 'application/x-www-form-urlencoded':
if not data.startswith('d='):
return HTTPServerError("Payload expected.")
data = unquote_plus(data[2:])
if not data:
return HTTPServerError("Payload expected.")
try:
messages = decode(data)
except:
return HTTPServerError("Broken JSON encoding.")
for msg in messages:
session.message(msg)
response.status = 200
response.headers['Content-Type'] = 'text/plain; charset=UTF-8'
response.body = 'ok'
else:
raise Exception("No support for such method: %s"%meth)
return response