Re: Python and Cors
Donal McMullan <[email protected]> Sun, 27 Aug 2017 20:43:51 +0100
| Newsgroups | gmane.comp.python.twisted.web |
|---|---|
| Message-ID | <CADf-aJEyVdZG5J9+A1bMiXoBCauUtTGRTob5VTXb_QUr=P8eVg@mail.gmail.com> |
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Ah sorry Deve - I failed to paste the first like of the render_GET method.
# Import necessary files
import serial
from twisted.web.resource import Resource
# Setup Arduino at correct speed
try:
arduino = serial.Serial('/dev/ttyACM0', 9600)
except:
arduino = serial.Serial('/dev/ttyACM1', 9600)
class MoveServo(Resource):
isLeaf = True
permitted_origins = ('http://192.168.1.122:9000',)
def render_GET(self,request):
origin = request.getHeader('Origin')
if origin in (self.permitted_origins):
request.setHeader('Access-Control-Allow-Origin', origin)
try:
# Send value over serial to the Arduino
arduino.write(request.args['value'][0])
return 'Success'
except:
return 'Failure'
resource = MoveServo()
On 27 August 2017 at 19:01, Deve Krehbiel <[email protected]> wrote:
> This is what I get without your code:
> index1.html:1 XMLHttpRequest cannot load http://192.168.1.122:81/
> servos.rpy?value=70P. No 'Access-Control-Allow-Origin' header is present
> on the requested resource. Origin 'http://192.168.1.122:9000' is
> therefore not allowed access.
> jquery.min.js:4 XHR failed loading: GET "http://192.168.1.122:81/
> servos.rpy?value=70P".
>
> This is what I get with it:
> jquery.min.js:4 GET http://192.168.1.122:81/servos.rpy?value=100P
> send @ jquery.min.js:4
> ajax @ jquery.min.js:4
> r.(anonymous function) @ jquery.min.js:4
> move @ index1.html:54
> onclick @ index1.html:17
> index1.html:1 XMLHttpRequest cannot load http://192.168.1.122:81/
> servos.rpy?value=100P. No 'Access-Control-Allow-Origin' header is present
> on the requested resource. Origin 'http://192.168.1.122:9000' is
> therefore not allowed access. *The response had HTTP status code 500.*
> jquery.min.js:4 XHR failed loading: GET "http://192.168.1.122:81/
> servos.rpy?value=100P".
>
> I appreciate your efforts and if you have any other ideas... Thank You!
>
> Deve
>
> On Sun, Aug 27, 2017 at 12:48 PM, Deve Krehbiel <[email protected]>
> wrote:
>
>> Thank you for the response. In trying that code, it made it so the LAN
>> cannot move the buttons either. Here is the error list I got:
>>
>> *web.Server Traceback (most recent call last):*
>> exceptions.NameError: global name 'origin' is not defined
>> /usr/lib/python2.7/dist-packages/twisted/web/server.py:189 in process
>> 188 self._encoder = encoder
>> 189 self.render(resrc)
>> 190 except:
>> /usr/lib/python2.7/dist-packages/twisted/web/server.py:238 in render
>> 237 try:
>> 238 body = resrc.render(self)
>> 239 except UnsupportedMethod as e:
>> /usr/lib/python2.7/dist-packages/twisted/web/resource.py:250 in render
>> 249 raise UnsupportedMethod(allowedMethods)
>> 250 return m(request)
>> 251
>> /usr/local/www/servos.rpy:15 in render_GET
>> 14 def render_GET(self,request):
>> 15 if origin in (self.permitted_origins):
>> 16 request.setHeader('Access-Control-Allow-Origin', origin)
>> exceptions.NameError: global name 'origin' is not defined
>>
>> Deve
>>
>> On Sun, Aug 27, 2017 at 12:03 PM, Donal McMullan <
>> [email protected]> wrote:
>>
>>> Perhaps you just need to set the 'Access-Control-Allow-Origin' header?
>>> Something like this might work:
>>>
>>>
>>> # Import necessary files
>>>
>>> import serial
>>>
>>> from twisted.web.resource import Resource
>>>
>>> # Setup Arduino at correct speed
>>>
>>> try:
>>>
>>> arduino = serial.Serial('/dev/ttyACM0', 9600)
>>>
>>> except:
>>>
>>> arduino = serial.Serial('/dev/ttyACM1', 9600)
>>>
>>>
>>>
>>> class MoveServo(Resource):
>>>
>>> isLeaf = True
>>>
>>> permitted_origins = ('http://192.168.1.122:9000',)
>>>
>>>
>>>
>>> def render_GET(self,request):
>>>
>>> if origin in (self.permitted_origins):
>>>
>>> request.setHeader('Access-Control-Allow-Origin', origin)
>>>
>>> try:
>>>
>>> # Send value over serial to the Arduino
>>>
>>> arduino.write(request.args['value'][0])
>>>
>>> return 'Success'
>>>
>>> except:
>>>
>>> return 'Failure'
>>>
>>>
>>>
>>> resource = MoveServo()
>>>
>>> On 27 August 2017 at 17:10, Deve Krehbiel <[email protected]> wrote:
>>>
>>>> First post so forgive me if I am not explaining this right.
>>>>
>>>> I am trying to make a baby cam and then heavily document it for
>>>> everyone to have access to. I am using a Raspberry Pi with Rasbian. I am
>>>> using mjpg-streamer for the streaming with no problems.
>>>>
>>>> The problem is I am also using two servos for pan and tilt. To
>>>> accomplish this I am using an Arduino Uno. This is so I can add IR lighting
>>>> for night vision, etc later. I am not a programmer so this is getting
>>>> frustrating after a few weeks of failure.
>>>>
>>>> How is it failing you might ask..well, its working perfectly with only
>>>> ONE exception:
>>>> Every time I push the button for left/right/up/down I get this:
>>>>
>>>> XMLHttpRequest cannot load http://192.168.1.122:81/servos
>>>> .rpy?value=100P. No 'Access-Control-Allow-Origin' header is present on
>>>> the requested resource. Origin 'http://192.168.1.122:9000' is
>>>> therefore not allowed access.
>>>>
>>>> On the local area network, it still works, but taking it to the
>>>> internet it does not.
>>>>
>>>> Here are the two programs that make this happen. One is servos.rpy and
>>>> the other is the supporting HTML/Get script;
>>>> ****
>>>> servos.rpy
>>>> -----------------------------------
>>>> # Import necessary files
>>>> import serial
>>>> from twisted.web.resource import Resource
>>>> # Setup Arduino at correct speed
>>>> try:
>>>> arduino = serial.Serial('/dev/ttyACM0', 9600)
>>>> except:
>>>> arduino = serial.Serial('/dev/ttyACM1', 9600)
>>>>
>>>> class MoveServo(Resource):
>>>> isLeaf = True
>>>> def render_GET(self,request):
>>>> try:
>>>> # Send value over serial to the Arduino
>>>> arduino.write(request.args['value'][0])
>>>> return 'Success'
>>>> except:
>>>> return 'Failure'
>>>>
>>>> resource = MoveServo()
>>>> ***
>>>>
>>>> Now for the HTML/Get script:
>>>>
>>>> **
>>>> <!doctype html>
>>>> <html>
>>>> <head>
>>>> <title>Make Use Of DIY Security Camera</title>
>>>> <style type="text/css">
>>>> #container {
>>>> /* center the content */
>>>> margin: 0 auto;
>>>> text-align: center;
>>>> }
>>>> </style>
>>>> </head>
>>>> <body>
>>>> <div id="container">
>>>> <img src="/?action=stream" /><br>
>>>> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jque
>>>> ry.min.js"></script><br />
>>>> <button onclick="servos.move('P', 10)">Left</button>
>>>> <button onclick="servos.move('P', -10)">Right</button>
>>>> <button onclick="servos.move('T', -10)">Down</button>
>>>> <button onclick="servos.move('T', 10)">Up</button>
>>>> </div>
>>>> </body>
>>>> <script>
>>>> var servos;
>>>> $( document ).ready(function() {
>>>> servos = moveServos();
>>>> });
>>>> function moveServos() {
>>>> // Store some settings, adjust to suit
>>>> var panPos = 70,
>>>> tiltPos = 90,
>>>> tiltMax = 170,
>>>> tiltMin = 45,
>>>> panMax = 170,
>>>> panMin = 20;
>>>> return {
>>>> move:function(servo, adjustment) {
>>>> var value;
>>>> if(servo == 'P') {
>>>> if(!((panPos >= panMax && adjustment > 0) || (panPos <= panMin &&
>>>> adjustment < 0))) {
>>>> // Still within allowed range, "schedule" the movement
>>>> panPos += adjustment;
>>>> }
>>>> value = panPos + 'P';
>>>> }
>>>> else if(servo == 'T') {
>>>> if(!((tiltPos >= tiltMax && adjustment > 0) || (tiltPos <= tiltMin &&
>>>> adjustment < 0))) {
>>>> // Still within allowed range, "schedule" the movement
>>>> tiltPos += adjustment;
>>>> }
>>>> value = tiltPos + 'T';
>>>> }
>>>> // Use AJAX to actually move the servo
>>>> $.get('http://192.168.1.122:81/servos.rpy?value=' + value);
>>>> },
>>>> }
>>>> }
>>>> </script>
>>>> </html>
>>>>
>>>> *****
>>>> Twisted is started: sudo twistd -n web -p 81 --path /usr/local/www/
>>>>
>>>> I would be forever grateful if someone could take a serious look at
>>>> this and tell me where I am going wrong. Once this is fixed, I can start
>>>> documenting the entire system for everyone. Thank you!
>>>>
>>>> Deve
>>>>
>>>> _______________________________________________
>>>> Twisted-web mailing list
>>>> [email protected]
>>>> https://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web
>>>>
>>>>
>>>
>>> _______________________________________________
>>> Twisted-web mailing list
>>> [email protected]
>>> https://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web
>>>
>>>
>>
>
> _______________________________________________
> Twisted-web mailing list
> [email protected]
> https://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web
>
>
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<div dir=3D"ltr">Ah sorry Deve - =C2=A0I failed to paste the first like of =
the render_GET method.<br><br><div># Import necessary files =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0</div><div>import serial =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0=
</div><div>from twisted.web.resource import Resource =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</div><div># Setup Arduino at c=
orrect speed =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0</div><div>try: =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0</div><div>=C2=A0 =C2=A0 arduino =3D serial.Serial('/d=
ev/ttyACM0', 9600) =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</div><div>except=
: =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</div><div>=C2=A0 =C2=A0 arduino =3D s=
erial.Serial('/dev/ttyACM1', 9600) =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
=C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0=C2=A0</div><div>class MoveServo(Resource): =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0</div><div>=C2=A0 =C2=A0 isLeaf =3D True =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</div><div>=C2=A0 =C2=
=A0 permitted_origins =3D ('<a href=3D"http://192.168.1.122:9000">http:=
//192.168.1.122:9000</a>',) =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0</div><div>=C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</div><div>=C2=A0 =C2=A0=
def render_GET(self,request): =C2=A0 =C2=A0 =C2=A0</div><div>=C2=A0 =C2=A0=
=C2=A0 =C2=A0 origin =3D request.getHeader('Origin') =C2=A0 =C2=A0=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</div><div>=C2=A0=
=C2=A0 =C2=A0 =C2=A0 if origin in (self.permitted_origins): =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 request.setHeader('Access-Control-Allow-Origin', origin)=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0 =
=C2=A0 try: =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 # Send value over serial to the Arduino =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0=
</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 arduino.write(request.=
args['value'][0]) =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</div><div>=C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 return 'Success' =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 except: =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</d=
iv><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 return 'Failure' =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</div><div>resource =3D MoveServo()=C2=
=A0</div></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On=
27 August 2017 at 19:01, Deve Krehbiel <span dir=3D"ltr"><<a href=3D"ma=
ilto:[email protected]" target=3D"_blank">[email protected]</a>></sp=
an> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;=
border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr"><div>This is =
what I get without your code:</div><div>index1.html:1 XMLHttpRequest cannot=
load <a href=3D"http://192.168.1.122:81/servos.rpy?value=3D70P" target=3D"=
_blank">http://192.168.1.122:81/<wbr>servos.rpy?value=3D70P</a>. No 'Ac=
cess-Control-Allow-Origin' header is present on the requested resource.=
Origin '<a href=3D"http://192.168.1.122:9000" target=3D"_blank">http:/=
/192.168.1.122:9000</a>' is therefore not allowed access.</div><div>jqu=
ery.min.js:4 XHR failed loading: GET "<a href=3D"http://192.168.1.122:=
81/servos.rpy?value=3D70P" target=3D"_blank">http://192.168.1.122:81/<wbr>s=
ervos.rpy?value=3D70P</a>".</div><div><br></div><div>This is what I ge=
t with it:</div><div><div>jquery.min.js:4 GET <a href=3D"http://192.168.1.1=
22:81/servos.rpy?value=3D100P" target=3D"_blank">http://192.168.1.122:81/<w=
br>servos.rpy?value=3D100P</a>=C2=A0</div><div>send @ jquery.min.js:4</div>=
<div>ajax @ jquery.min.js:4</div><div>r.(anonymous function) @ jquery.min.j=
s:4</div><div>move @ index1.html:54</div><div>onclick @ index1.html:17</div=
><div>index1.html:1 XMLHttpRequest cannot load <a href=3D"http://192.168.1.=
122:81/servos.rpy?value=3D100P" target=3D"_blank">http://192.168.1.122:81/<=
wbr>servos.rpy?value=3D100P</a>. No 'Access-Control-Allow-Origin' h=
eader is present on the requested resource. Origin '<a href=3D"http://1=
92.168.1.122:9000" target=3D"_blank">http://192.168.1.122:9000</a>' is =
therefore not allowed access. <b>The response had HTTP status code 500.</b>=
</div><div>jquery.min.js:4 XHR failed loading: GET "<a href=3D"http://=
192.168.1.122:81/servos.rpy?value=3D100P" target=3D"_blank">http://192.168.=
1.122:81/<wbr>servos.rpy?value=3D100P</a>".</div></div><div><br></div>=
<div>I appreciate your efforts and if you have any other ideas... Thank You=
!</div></div><div class=3D"gmail_extra"><span class=3D"HOEnZb"><font color=
=3D"#888888"><br clear=3D"all"><div><div class=3D"m_8117101615705453869gmai=
l_signature" data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div><div =
dir=3D"ltr"><div>Deve</div></div></div></div></div></div></font></span><div=
><div class=3D"h5">
<br><div class=3D"gmail_quote">On Sun, Aug 27, 2017 at 12:48 PM, Deve Krehb=
iel <span dir=3D"ltr"><<a href=3D"mailto:[email protected]" target=3D"=
_blank">[email protected]</a>></span> wrote:<br><blockquote class=3D"g=
mail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-l=
eft:1ex"><div dir=3D"ltr">Thank you for the response. In trying that code, =
it made it so the LAN cannot move the buttons either. Here is the error lis=
t I got:<div><br></div><div><b style=3D"color:rgb(0,0,0);font-family:"=
Times New Roman";font-size:medium">web.Server Traceback (most recent c=
all last):</b><span style=3D"color:rgb(0,0,0);font-family:"Times New R=
oman";font-size:medium"></span><div style=3D"font-family:Verdana,Arial=
,helvetica,sans-serif;color:rgb(0,0,0);font-size:medium"><div class=3D"m_81=
17101615705453869m_8371283913762161110error" style=3D"color:red;font-weight=
:bold">exceptions.NameError:=C2=A0global name 'origin' is not defin=
ed</div><div class=3D"m_8117101615705453869m_8371283913762161110gmail-stack=
Trace"><div class=3D"m_8117101615705453869m_8371283913762161110gmail-frame"=
style=3D"padding:1em;background-image:initial;background-position:initial;=
background-size:initial;background-repeat:initial;background-origin:initial=
;background-clip:initial;border-bottom:thin dashed black;border-top:thin da=
shed black"><div class=3D"m_8117101615705453869m_8371283913762161110gmail-l=
ocation">/usr/lib/python2.7/dist-packag<wbr>es/twisted/web/server.py:189=C2=
=A0<wbr>in=C2=A0<span class=3D"m_8117101615705453869m_8371283913762161110gm=
ail-function" style=3D"font-weight:bold;font-family:"Courier New"=
,courier,monospace">process</span></div><div class=3D"m_8117101615705453869=
m_8371283913762161110gmail-snippet" style=3D"margin-bottom:0.5em;margin-lef=
t:1em;background:rgb(255,255,221)"><div class=3D"m_8117101615705453869m_837=
1283913762161110gmail-snippetLine"><span class=3D"m_8117101615705453869m_83=
71283913762161110gmail-lineno">188</span>=C2=A0<code class=3D"m_81171016157=
05453869m_8371283913762161110gmail-code">=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0self._encoder =3D encoder</code></div><d=
iv class=3D"m_8117101615705453869m_8371283913762161110gmail-snippetHighligh=
tLine" style=3D"color:red"><span class=3D"m_8117101615705453869m_8371283913=
762161110gmail-lineno">189</span>=C2=A0<code class=3D"m_8117101615705453869=
m_8371283913762161110gmail-code">=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0s=
elf.render(resrc)</code></div><div class=3D"m_8117101615705453869m_83712839=
13762161110gmail-snippetLine"><span class=3D"m_8117101615705453869m_8371283=
913762161110gmail-lineno">190</span>=C2=A0<code class=3D"m_8117101615705453=
869m_8371283913762161110gmail-code">=C2=A0 =C2=A0 =C2=A0 =C2=A0except:</cod=
e></div></div></div><div class=3D"m_8117101615705453869m_837128391376216111=
0gmail-frame" style=3D"padding:1em;background-image:initial;background-posi=
tion:initial;background-size:initial;background-repeat:initial;background-o=
rigin:initial;background-clip:initial;border-bottom:thin dashed black"><div=
class=3D"m_8117101615705453869m_8371283913762161110gmail-location">/usr/li=
b/python2.7/dist-packag<wbr>es/twisted/web/server.py:238=C2=A0<wbr>in=C2=A0=
<span class=3D"m_8117101615705453869m_8371283913762161110gmail-function" st=
yle=3D"font-weight:bold;font-family:"Courier New",courier,monospa=
ce">render</span></div><div class=3D"m_8117101615705453869m_837128391376216=
1110gmail-snippet" style=3D"margin-bottom:0.5em;margin-left:1em;background:=
rgb(255,255,221)"><div class=3D"m_8117101615705453869m_8371283913762161110g=
mail-snippetLine"><span class=3D"m_8117101615705453869m_8371283913762161110=
gmail-lineno">237</span>=C2=A0<code class=3D"m_8117101615705453869m_8371283=
913762161110gmail-code">=C2=A0 =C2=A0 =C2=A0 =C2=A0try:</code></div><div cl=
ass=3D"m_8117101615705453869m_8371283913762161110gmail-snippetHighlightLine=
" style=3D"color:red"><span class=3D"m_8117101615705453869m_837128391376216=
1110gmail-lineno">238</span>=C2=A0<code class=3D"m_8117101615705453869m_837=
1283913762161110gmail-code">=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0body =
=3D resrc.render(self)</code></div><div class=3D"m_8117101615705453869m_837=
1283913762161110gmail-snippetLine"><span class=3D"m_8117101615705453869m_83=
71283913762161110gmail-lineno">239</span>=C2=A0<code class=3D"m_81171016157=
05453869m_8371283913762161110gmail-code">=C2=A0 =C2=A0 =C2=A0 =C2=A0except =
UnsupportedMethod as e:</code></div></div></div><div class=3D"m_81171016157=
05453869m_8371283913762161110gmail-frame" style=3D"padding:1em;background-i=
mage:initial;background-position:initial;background-size:initial;background=
-repeat:initial;background-origin:initial;background-clip:initial;border-bo=
ttom:thin dashed black"><div class=3D"m_8117101615705453869m_83712839137621=
61110gmail-location">/usr/lib/python2.7/dist-packag<wbr>es/twisted/web/reso=
urce.py:<wbr>250=C2=A0in=C2=A0<span class=3D"m_8117101615705453869m_8371283=
913762161110gmail-function" style=3D"font-weight:bold;font-family:"Cou=
rier New",courier,monospace">render</span></div><div class=3D"m_811710=
1615705453869m_8371283913762161110gmail-snippet" style=3D"margin-bottom:0.5=
em;margin-left:1em;background:rgb(255,255,221)"><div class=3D"m_81171016157=
05453869m_8371283913762161110gmail-snippetLine"><span class=3D"m_8117101615=
705453869m_8371283913762161110gmail-lineno">249</span>=C2=A0<code class=3D"=
m_8117101615705453869m_8371283913762161110gmail-code">=C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0raise UnsupportedMethod(allowedMetho<wbr>ds)</code></di=
v><div class=3D"m_8117101615705453869m_8371283913762161110gmail-snippetHigh=
lightLine" style=3D"color:red"><span class=3D"m_8117101615705453869m_837128=
3913762161110gmail-lineno">250</span>=C2=A0<code class=3D"m_811710161570545=
3869m_8371283913762161110gmail-code">=C2=A0 =C2=A0 =C2=A0 =C2=A0return m(re=
quest)</code></div><div class=3D"m_8117101615705453869m_8371283913762161110=
gmail-snippetLine"><span class=3D"m_8117101615705453869m_837128391376216111=
0gmail-lineno">251</span><code class=3D"m_8117101615705453869m_837128391376=
2161110gmail-code"></code></div></div></div><div class=3D"m_811710161570545=
3869m_8371283913762161110gmail-frame" style=3D"padding:1em;background-image=
:initial;background-position:initial;background-size:initial;background-rep=
eat:initial;background-origin:initial;background-clip:initial;border-bottom=
:thin dashed black"><div class=3D"m_8117101615705453869m_837128391376216111=
0gmail-location">/usr/local/www/servos.rpy:15=C2=A0i<wbr>n=C2=A0<span class=
=3D"m_8117101615705453869m_8371283913762161110gmail-function" style=3D"font=
-weight:bold;font-family:"Courier New",courier,monospace">render_=
GET</span></div><div class=3D"m_8117101615705453869m_8371283913762161110gma=
il-snippet" style=3D"margin-bottom:0.5em;margin-left:1em;background:rgb(255=
,255,221)"><div class=3D"m_8117101615705453869m_8371283913762161110gmail-sn=
ippetLine"><span class=3D"m_8117101615705453869m_8371283913762161110gmail-l=
ineno">14</span>=C2=A0<code class=3D"m_8117101615705453869m_837128391376216=
1110gmail-code">=C2=A0 =C2=A0def render_GET(self,request):</code></div><div=
class=3D"m_8117101615705453869m_8371283913762161110gmail-snippetHighlightL=
ine" style=3D"color:red"><span class=3D"m_8117101615705453869m_837128391376=
2161110gmail-lineno">15</span>=C2=A0<code class=3D"m_8117101615705453869m_8=
371283913762161110gmail-code">=C2=A0 =C2=A0 =C2=A0 =C2=A0if origin in (self=
.permitted_origins):</code></div><div class=3D"m_8117101615705453869m_83712=
83913762161110gmail-snippetLine"><span class=3D"m_8117101615705453869m_8371=
283913762161110gmail-lineno">16</span>=C2=A0<code class=3D"m_81171016157054=
53869m_8371283913762161110gmail-code">=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0request.setHeader('Access-Con<wbr>trol-Allow-Origin', origin)=
</code></div></div></div></div><div class=3D"m_8117101615705453869m_8371283=
913762161110error" style=3D"color:red;font-weight:bold">exceptions.NameErro=
r:=C2=A0global name 'origin' is not defined</div></div></div></div>=
<div class=3D"gmail_extra"><span class=3D"m_8117101615705453869HOEnZb"><fon=
t color=3D"#888888"><br clear=3D"all"><div><div class=3D"m_8117101615705453=
869m_8371283913762161110gmail_signature" data-smartmail=3D"gmail_signature"=
><div dir=3D"ltr"><div><div dir=3D"ltr"><div>Deve</div></div></div></div></=
div></div></font></span><div><div class=3D"m_8117101615705453869h5">
<br><div class=3D"gmail_quote">On Sun, Aug 27, 2017 at 12:03 PM, Donal McMu=
llan <span dir=3D"ltr"><<a href=3D"mailto:[email protected]" targ=
et=3D"_blank">[email protected]</a>></span> wrote:<br><blockquote=
class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc soli=
d;padding-left:1ex"><div dir=3D"ltr"><div>Perhaps you just need to set the =
'Access-Control-Allow-Origin' header? Something like this might wor=
k:</div><span><div><br></div><div><br></div><div># Import necessary files =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0</div><div>import serial =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0=C2=A0</div><div>from twisted.web.resource import Resource =C2=A0=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</div><div># Setu=
p Arduino at correct speed =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0</div><div>try: =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0</div><div>=C2=A0 =C2=A0 arduino =3D serial.=
Serial('/dev/ttyACM0', 9600) =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</d=
iv><div>except: =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</div><div>=C2=A0 =C2=A0=
arduino =3D serial.Serial('/dev/ttyACM1', 9600) =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0=C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0=C2=A0</div><div>class MoveServo(Resource): =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0</div><div>=C2=A0 =C2=A0 isLeaf =3D True =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</div></sp=
an><div>=C2=A0 =C2=A0 permitted_origins =3D ('<a href=3D"http://192.168=
.1.122:9000" target=3D"_blank">http://192.168.1.122:9000</a>',) =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0=C2=A0</div><div>=C2=A0 =C2=A0 def render_GET(self,request): =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0=C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 if origin in (self.permi=
tted_origins): =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0</div><div>=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 request.setHeader('Access-Cont<w=
br>rol-Allow-Origin', origin) =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
</div><span><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 try: =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0</div><di=
v>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 # Send value over serial to the=
Arduino =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0=
=C2=A0 =C2=A0 arduino.write(request.args['va<wbr>lue'][0]) =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0=C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
return 'Success' =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0</div><div>=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 except: =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 return 'Failure' =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
=C2=A0</div><div>resource =3D MoveServo()=C2=A0</div></span></div><div clas=
s=3D"gmail_extra"><br><div class=3D"gmail_quote"><div><div class=3D"m_81171=
01615705453869m_8371283913762161110h5">On 27 August 2017 at 17:10, Deve Kre=
hbiel <span dir=3D"ltr"><<a href=3D"mailto:[email protected]" target=
=3D"_blank">[email protected]</a>></span> wrote:<br></div></div><block=
quote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc=
solid;padding-left:1ex"><div><div class=3D"m_8117101615705453869m_83712839=
13762161110h5"><div dir=3D"ltr">First post so forgive me if I am not explai=
ning this right.=C2=A0<div><br></div><div>I am trying to make a baby cam an=
d then heavily document it for everyone to have access to. I am using a Ras=
pberry Pi with Rasbian. I am using mjpg-streamer for the streaming with no =
problems.=C2=A0</div><div><br></div><div>The problem is I am also using two=
servos for pan and tilt. To accomplish this I am using an Arduino Uno. Thi=
s is so I can add IR lighting for night vision, etc later. I am not a progr=
ammer so this is getting frustrating after a few weeks of failure.</div><di=
v><br></div><div>How is it failing you might ask..well, its working perfect=
ly with only ONE exception:</div><div>Every time I push the button for left=
/right/up/down I get this:</div><div><br></div><div>XMLHttpRequest cannot l=
oad <a href=3D"http://192.168.1.122:81/servos.rpy?value=3D100P" target=3D"_=
blank">http://192.168.1.122:81/servos<wbr>.rpy?value=3D100P</a>. No 'Ac=
cess-Control-Allow-Origin' header is present on the requested resource.=
Origin '<a href=3D"http://192.168.1.122:9000" target=3D"_blank">http:/=
/192.168.1.122:9000</a>' is therefore not allowed access.</div><div><br=
></div><div>On the local area network, it still works, but taking it to the=
internet it does not.</div><div><br></div><div>Here are the two programs t=
hat make this happen. One is servos.rpy and the other is the supporting HTM=
L/Get script;</div><div>****</div><div>servos.rpy</div><div>---------------=
---------------<wbr>-----</div><div><div># Import necessary files</div><div=
>import serial</div><div>from twisted.web.resource import Resource</div><di=
v># Setup Arduino at correct speed</div><div>try:</div><div>=C2=A0 =C2=A0 =
=C2=A0 =C2=A0 arduino =3D serial.Serial('/dev/ttyACM0', 9600)</div>=
<div>except:</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 arduino =3D serial.Seria=
l('/dev/ttyACM1', 9600)</div><div><br></div><div>class MoveServo(Re=
source):</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 isLeaf =3D True</div><div>=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 def render_GET(self,request):</div><div>=C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 try:</div><div>=C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <span style=3D"white-space:pr=
e-wrap"> </span># Send value over serial to the Arduino</div><div>=C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 arduino.write(request.args['va<wbr>lue'][0])</div><div>=C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 return 'Success'</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 except:</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 return 'Failure'</=
div><div><br></div><div>resource =3D MoveServo()</div></div><div>***</div><=
div><br></div><div>Now for the HTML/Get script:</div><div><br></div><div>**=
</div><div><div><!doctype html></div><div><html></div><div><spa=
n style=3D"white-space:pre-wrap"> </span><head></div><div><span style=
=3D"white-space:pre-wrap"> </span><title>Make Use Of DIY Security Ca=
mera</title></div><div><span style=3D"white-space:pre-wrap"> </span>=
<style type=3D"text/css"></div><div><span style=3D"white-sp=
ace:pre-wrap"> </span>#container {</div><div><span style=3D"white-space:p=
re-wrap"> </span>/* center the content */</div><div><span style=3D"white=
-space:pre-wrap"> </span>margin: 0 auto;<span style=3D"white-space:pre-w=
rap"> </span></div><div><span style=3D"white-space:pre-wrap"> </span>tex=
t-align: center;</div><div><span style=3D"white-space:pre-wrap"> </span>}=
</div><div><span style=3D"white-space:pre-wrap"> </span></style></di=
v><div><span style=3D"white-space:pre-wrap"> </span></head></div><div=
><span style=3D"white-space:pre-wrap"> </span><body></div><div><span =
style=3D"white-space:pre-wrap"> </span><div id=3D"container"&=
gt;</div><div><span style=3D"white-space:pre-wrap"> </span><img src=3D=
"/?action=3Dstream" /><br></div><div><span style=3D"whit=
e-space:pre-wrap"> </span><script src=3D"<a href=3D"https://ajax.=
googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js" target=3D"_blank">http=
s://ajax.googleapis.c<wbr>om/ajax/libs/jquery/3.1.0/jque<wbr>ry.min.js</a>&=
quot;></script><br /></div><div><span style=3D"white-space:p=
re-wrap"> </span><button onclick=3D"servos.move('P', 10)&=
quot;>Left</button></div><div><span style=3D"white-space:pre-wrap"=
> </span><button onclick=3D"servos.move('P', -10)"&g=
t;Right</button></div><div><span style=3D"white-space:pre-wrap"> </=
span><button onclick=3D"servos.move('T', -10)">Down=
</button></div><div><span style=3D"white-space:pre-wrap"> </span>&l=
t;button onclick=3D"servos.move('T', 10)">Up</butto=
n></div><div><span style=3D"white-space:pre-wrap"> </span></div><=
/div><div><span style=3D"white-space:pre-wrap"> </span></body></div><=
div><span style=3D"white-space:pre-wrap"> </span><script></div><div><=
span style=3D"white-space:pre-wrap"> </span>var servos;</div><div><span st=
yle=3D"white-space:pre-wrap"> </span>$( document ).ready(function() {</div=
><div><span style=3D"white-space:pre-wrap"> </span>servos =3D moveServos(=
);</div><div><span style=3D"white-space:pre-wrap"> </span>});</div><div><s=
pan style=3D"white-space:pre-wrap"> </span>function moveServos() {</div><d=
iv><span style=3D"white-space:pre-wrap"> </span>// Store some settings, a=
djust to suit</div><div><span style=3D"white-space:pre-wrap"> </span>var =
panPos =3D 70,=C2=A0</div><div><span style=3D"white-space:pre-wrap"> </s=
pan>tiltPos =3D 90,=C2=A0</div><div><span style=3D"white-space:pre-wrap"> =
</span>tiltMax =3D 170,=C2=A0</div><div><span style=3D"white-space:pre-wr=
ap"> </span>tiltMin =3D 45,=C2=A0</div><div><span style=3D"white-space:p=
re-wrap"> </span>panMax =3D 170,=C2=A0</div><div><span style=3D"white-sp=
ace:pre-wrap"> </span>panMin =3D 20;</div><div><span style=3D"white-spac=
e:pre-wrap"> </span>return {</div><div><span style=3D"white-space:pre-wra=
p"> </span>move:function(servo, adjustment) {</div><div><span style=3D"w=
hite-space:pre-wrap"> </span>var value;</div><div><span style=3D"white-=
space:pre-wrap"> </span>if(servo =3D=3D 'P') {</div><div><span =
style=3D"white-space:pre-wrap"> </span>if(!((panPos >=3D panMax &am=
p;& adjustment > 0) || (panPos <=3D panMin && adjustment =
< 0))) {</div><div><span style=3D"white-space:pre-wrap"> </span>//=
Still within allowed range, "schedule" the movement</div><div><s=
pan style=3D"white-space:pre-wrap"> </span>panPos +=3D adjustment;</d=
iv><div><span style=3D"white-space:pre-wrap"> </span>}</div><div><span=
style=3D"white-space:pre-wrap"> </span>value =3D panPos + 'P'=
;</div><div><span style=3D"white-space:pre-wrap"> </span>}</div><div><s=
pan style=3D"white-space:pre-wrap"> </span>else if(servo =3D=3D 'T&=
#39;) {</div><div><span style=3D"white-space:pre-wrap"> </span>if(!((t=
iltPos >=3D tiltMax && adjustment > 0) || (tiltPos <=3D ti=
ltMin && adjustment < 0))) {</div><div><span style=3D"white-spac=
e:pre-wrap"> </span>// Still within allowed range, "schedule&quo=
t; the movement</div><div><span style=3D"white-space:pre-wrap"> </spa=
n>tiltPos +=3D adjustment;</div><div><span style=3D"white-space:pre-wrap"> =
</span>}</div><div><span style=3D"white-space:pre-wrap"> </span>v=
alue =3D tiltPos + 'T';</div><div><span style=3D"white-space:pre-wr=
ap"> </span>}</div><div><span style=3D"white-space:pre-wrap"> </spa=
n>// Use AJAX to actually move the servo</div><div><span style=3D"white-spa=
ce:pre-wrap"> </span>$.get('<a href=3D"http://192.168.1.122:81/serv=
os.rpy?value=3D" target=3D"_blank">http://192.168.1.122:81<wbr>/servos.rpy?=
value=3D</a>' + value);</div><div><span style=3D"white-space:pre-wrap">=
</span>},</div><div><span style=3D"white-space:pre-wrap"> </span>}</d=
iv><div><span style=3D"white-space:pre-wrap"> </span>}</div><div><span sty=
le=3D"white-space:pre-wrap"> </span></script></div><div></html>=
</div></div><div><br></div><div>*****</div><div>Twisted is started: =C2=A0s=
udo twistd -n web -p 81 --path /usr/local/www/</div><div><br></div><div>I w=
ould be forever grateful if someone could take a serious look at this and t=
ell me where I am going wrong. Once this is fixed, I can start documenting =
the entire system for everyone. Thank you!</div><span class=3D"m_8117101615=
705453869m_8371283913762161110m_-4865426837896638325HOEnZb"><font color=3D"=
#888888"><div><br clear=3D"all"><div><div class=3D"m_8117101615705453869m_8=
371283913762161110m_-4865426837896638325m_-2487397493353888386gmail_signatu=
re"><div dir=3D"ltr"><div><div dir=3D"ltr"><div>Deve</div></div></div></div=
></div></div>
</div></font></span></div>
<br></div></div>______________________________<wbr>_________________<br>
Twisted-web mailing list<br>
<a href=3D"mailto:[email protected]" target=3D"_blank">Twisted-=
[email protected]</a><br>
<a href=3D"https://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web" =
rel=3D"noreferrer" target=3D"_blank">https://twistedmatrix.com/cgi-<wbr>bin=
/mailman/listinfo/twisted-w<wbr>eb</a><br>
<br></blockquote></div><br></div>
<br>______________________________<wbr>_________________<br>
Twisted-web mailing list<br>
<a href=3D"mailto:[email protected]" target=3D"_blank">Twisted-=
[email protected]</a><br>
<a href=3D"https://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web" =
rel=3D"noreferrer" target=3D"_blank">https://twistedmatrix.com/cgi-<wbr>bin=
/mailman/listinfo/twisted-w<wbr>eb</a><br>
<br></blockquote></div><br></div></div></div>
</blockquote></div><br></div></div></div>
<br>______________________________<wbr>_________________<br>
Twisted-web mailing list<br>
<a href=3D"mailto:[email protected]">Twisted-web@twistedmatrix.=
com</a><br>
<a href=3D"https://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web" =
rel=3D"noreferrer" target=3D"_blank">https://twistedmatrix.com/cgi-<wbr>bin=
/mailman/listinfo/twisted-<wbr>web</a><br>
<br></blockquote></div><br></div>
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