Re: [racket-users] Sending RESTful Commands using Racket
Hello, Use (define-values (a b c) (http-send-recv ...)) as a remplacement for define when you receive multiple values. Or (let-values ([(a b c) (http-send-recv ...)]) ...) the same idea but for let. You can search for binding ending with '-values'. see http://docs.racket-lang.org/reference/eval-model.html?q=values#%28part._values-model%29 and http://docs.racket-lang.org/reference/values.html?q=values#%28def._%28%28quote._~23~25kernel%29._values%29%29 example: (define-values (a b c) (values 1 2 3)) (define a (values 1 2 3)) ;; error expect one returned value get 3. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [racket-users] Sending RESTful Commands using Racket
Hi Jay,
Sorry for this newbie question, but how do I grab just the third value.
Everything I try gets me an arity mismatch:
result arity mismatch;
expected number of values not received
expected: 1
received: 3
values...:
#"HTTP/1.1 200 OK"
'(#"Cache-Control: no-store, no-cache, must-revalidate, post-check=0,
pre-che...
#
Thanks!
-Bruce
On Wednesday, June 17, 2015 at 5:24:09 PM UTC-4, Jay McCarthy wrote:
> The http-sendrecv function returns three values:
>
> status : bytes?
> header : (listof bytes?)
> response : input-port?
>
> You need to look at the third one for the response. You could pass it
> to read-json or you could do port->string or anything else that you
> can do with an input port.
>
> Jay
>
>
> On Wed, Jun 17, 2015 at 5:14 PM, Bruce wrote:
> > John,
> >
> > Thank you so much. That solved the problem of controlling the lights.
> > However, I still can't figure out how to get at the response from the Hue
> > Bridge. I should be receiving:
> >
> > [
> > {"success":{"/lights/1/state/on":true}},
> > {"success":{"/lights/1/state/bri":170}},
> > {"success":{"/lights/1/state/ct":500}}
> > ]
> >
> > I'm having the same problem when I use GET to inquire about the state of
> > the lights.
> >
> > My best,
> > Bruce
> >
> > On Wednesday, June 17, 2015 at 2:50:36 PM UTC-4, johnbclements wrote:
> >> > On Jun 17, 2015, at 11:38 AM, Bruce wrote:
> >> >
> >> > Thanks so much; however, I'm still having trouble getting the lights to
> >> > respond. I had to alter your example somewhat, because Racket was
> >> > complaining about an "in-string: contract violation". The following
> >> > seems to work:
> >>
> >> Oops forgot to cc: group:
> >>
> >> Going back to your original message, it appears that the data was encoded
> >> as JSON, not using a urlencoding (that would make sense for a GET, but not
> >> for a PUT or POST).
> >>
> >> Try using this code to generate the data:
> >>
> >> #lang racket
> >> (require json)
> >>
> >> (jsexpr->string
> >> (hash 'on #t
> >> 'bri 170
> >> 'ct 500))
> >>
> >> Let me know if you want me to stuff it into the http-sendrecv call.
> >>
> >> John
> >>
> >>
> >> >
> >>
> >> > (http-sendrecv
> >> > "192.168.1.95" "/api//lights/1/state"
> >> > #:method 'PUT
> >> > #:data
> >> > (alist->form-urlencoded
> >> > (list (cons 'bri "1")
> >> >(cons 'ct "500")))
> >> > #:headers
> >> > '("Content-Type: application/x-www-form-urlencoded"))
> >> >
> >> > However, instead of affecting the light, I just get the following on the
> >> > REPL:
> >> >
> >> > #"HTTP/1.1 200 OK"
> >> > '(#"Cache-Control: no-store, no-cache, must-revalidate, post-check=0,
> >> > pre-check=0"
> >> > #"Pragma: no-cache"
> >> > #"Expires: Mon, 1 Aug 2011 09:00:00 GMT"
> >> > #"Connection: close"
> >> > #"Access-Control-Max-Age: 3600"
> >> > #"Access-Control-Allow-Origin: *"
> >> > #"Access-Control-Allow-Credentials: true"
> >> > #"Access-Control-Allow-Methods: POST, GET, OPTIONS, PUT, DELETE, HEAD"
> >> > #"Access-Control-Allow-Headers: Content-Type"
> >> > #"Content-type: application/json")
> >> > #
> >> >
> >> > I've also tried sending the message using:
> >> >
> >> > #:data
> >> > (form-urlencoded-encode "\"bri\": 1")
> >> >
> >> > and changing the #:headers to '("Content-Type: application/json")
> >> >
> >> > Any thoughts?
> >> >
> >> > My best,
> >> > Bruce
> >> >
> >> > On Wednesday, June 17, 2015 at 11:35:32 AM UTC-4, Alexis King wrote:
> >> >> You probably want to use the net/http-client library, specifically the
> >> >> http-sendrecv function. I’m not 100% sure, but I’d guess that the
> >> >> equivalent Racket code for your curl command would look something like
> >> >> this.
> >> >>
> >> >> (require net/http-client
> >> >> net/uri-codec)
> >> >>
> >> >> (http-sendrecv
> >> >> "192.168.1.20" "/api//lights/8/state"
> >> >> #:method 'PUT
> >> >> #:data
> >> >> (alist->form-urlencoded
> >> >> '((on #t)
> >> >>(bri 170)
> >> >>(ct 500)))
> >> >> #:headers
> >> >> '("Content-Type: application/x-www-form-urlencoded"))
> >> >>
> >> >> See
> >> >> http://docs.racket-lang.org/net/http-client.html#%28def._%28%28lib._net%2Fhttp-client..rkt%29._http-sendrecv%29%29
> >> >>
> >> >>> On Jun 17, 2015, at 7:57 AM, Bruce wrote:
> >> >>>
> >> >>> Hello,
> >> >>>
> >> >>> I'm new to programming, so patience is appreciated. I'm writing a
> >> >>> simple program in Racket to control Phillip Hue Bulbs in a performance
> >> >>> environment. Phillips has a simple RESTful API and I'm looking for the
> >> >>> Racket commands or library to send the commands. Previously I've used
> >> >>> AppleScript to launch bash curl commands, like:
> >> >>>
> >> >>> curl -x PUT -d '{"on":true,"bri":170,"ct":500}'
> >> >>> http://192.168.1.20/api//lights/8/state
> >> >>>
> >> >>> Is there an easy way to send a similar message in Racket?
> >> >>>
> >> >>> Thank you,
> >> >>> Bruce
> >> >
> >> > --
> >> > You received this message because y
Re: [racket-users] Sending RESTful Commands using Racket
If you're on linux, one dirty trick you could try is to start up a local
"web server" like netcat to just listen on the HTTP port and show you
the request that's happening:
nc -l -p 80
Then, point Curl and your Racket script to localhost and compare the
request sent by each.
bruc...@gmail.com writes:
> John,
>
> Thank you so much. That solved the problem of controlling the lights.
> However, I still can't figure out how to get at the response from the Hue
> Bridge. I should be receiving:
>
> [
> {"success":{"/lights/1/state/on":true}},
> {"success":{"/lights/1/state/bri":170}},
> {"success":{"/lights/1/state/ct":500}}
> ]
>
> I'm having the same problem when I use GET to inquire about the state of the
> lights.
>
> My best,
> Bruce
>
> On Wednesday, June 17, 2015 at 2:50:36 PM UTC-4, johnbclements wrote:
>> > On Jun 17, 2015, at 11:38 AM, Bruce wrote:
>> >
>> > Thanks so much; however, I'm still having trouble getting the lights to
>> > respond. I had to alter your example somewhat, because Racket was
>> > complaining about an "in-string: contract violation". The following seems
>> > to work:
>>
>> Oops forgot to cc: group:
>>
>> Going back to your original message, it appears that the data was encoded as
>> JSON, not using a urlencoding (that would make sense for a GET, but not for
>> a PUT or POST).
>>
>> Try using this code to generate the data:
>>
>> #lang racket
>> (require json)
>>
>> (jsexpr->string
>> (hash 'on #t
>> 'bri 170
>> 'ct 500))
>>
>> Let me know if you want me to stuff it into the http-sendrecv call.
>>
>> John
>>
>>
>> >
>>
>> > (http-sendrecv
>> > "192.168.1.95" "/api//lights/1/state"
>> > #:method 'PUT
>> > #:data
>> > (alist->form-urlencoded
>> > (list (cons 'bri "1")
>> >(cons 'ct "500")))
>> > #:headers
>> > '("Content-Type: application/x-www-form-urlencoded"))
>> >
>> > However, instead of affecting the light, I just get the following on the
>> > REPL:
>> >
>> > #"HTTP/1.1 200 OK"
>> > '(#"Cache-Control: no-store, no-cache, must-revalidate, post-check=0,
>> > pre-check=0"
>> > #"Pragma: no-cache"
>> > #"Expires: Mon, 1 Aug 2011 09:00:00 GMT"
>> > #"Connection: close"
>> > #"Access-Control-Max-Age: 3600"
>> > #"Access-Control-Allow-Origin: *"
>> > #"Access-Control-Allow-Credentials: true"
>> > #"Access-Control-Allow-Methods: POST, GET, OPTIONS, PUT, DELETE, HEAD"
>> > #"Access-Control-Allow-Headers: Content-Type"
>> > #"Content-type: application/json")
>> > #
>> >
>> > I've also tried sending the message using:
>> >
>> > #:data
>> > (form-urlencoded-encode "\"bri\": 1")
>> >
>> > and changing the #:headers to '("Content-Type: application/json")
>> >
>> > Any thoughts?
>> >
>> > My best,
>> > Bruce
>> >
>> > On Wednesday, June 17, 2015 at 11:35:32 AM UTC-4, Alexis King wrote:
>> >> You probably want to use the net/http-client library, specifically the
>> >> http-sendrecv function. I’m not 100% sure, but I’d guess that the
>> >> equivalent Racket code for your curl command would look something like
>> >> this.
>> >>
>> >> (require net/http-client
>> >> net/uri-codec)
>> >>
>> >> (http-sendrecv
>> >> "192.168.1.20" "/api//lights/8/state"
>> >> #:method 'PUT
>> >> #:data
>> >> (alist->form-urlencoded
>> >> '((on #t)
>> >>(bri 170)
>> >>(ct 500)))
>> >> #:headers
>> >> '("Content-Type: application/x-www-form-urlencoded"))
>> >>
>> >> See
>> >> http://docs.racket-lang.org/net/http-client.html#%28def._%28%28lib._net%2Fhttp-client..rkt%29._http-sendrecv%29%29
>> >>
>> >>> On Jun 17, 2015, at 7:57 AM, Bruce wrote:
>> >>>
>> >>> Hello,
>> >>>
>> >>> I'm new to programming, so patience is appreciated. I'm writing a simple
>> >>> program in Racket to control Phillip Hue Bulbs in a performance
>> >>> environment. Phillips has a simple RESTful API and I'm looking for the
>> >>> Racket commands or library to send the commands. Previously I've used
>> >>> AppleScript to launch bash curl commands, like:
>> >>>
>> >>> curl -x PUT -d '{"on":true,"bri":170,"ct":500}'
>> >>> http://192.168.1.20/api//lights/8/state
>> >>>
>> >>> Is there an easy way to send a similar message in Racket?
>> >>>
>> >>> Thank you,
>> >>> Bruce
>> >
>> > --
>> > You received this message because you are subscribed to the Google Groups
>> > "Racket Users" group.
>> > To unsubscribe from this group and stop receiving emails from it, send an
>> > email to racket-users+unsubscr...@googlegroups.com.
>> > For more options, visit https://groups.google.com/d/optout.
>
> --
> You received this message because you are subscribed to the Google Groups
> "Racket Users" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to racket-users+unsubscr...@googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.
--
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To unsubscribe from this group and stop receiving emails from it, send an email
Re: [racket-users] Sending RESTful Commands using Racket
The http-sendrecv function returns three values:
status : bytes?
header : (listof bytes?)
response : input-port?
You need to look at the third one for the response. You could pass it
to read-json or you could do port->string or anything else that you
can do with an input port.
Jay
On Wed, Jun 17, 2015 at 5:14 PM, wrote:
> John,
>
> Thank you so much. That solved the problem of controlling the lights.
> However, I still can't figure out how to get at the response from the Hue
> Bridge. I should be receiving:
>
> [
> {"success":{"/lights/1/state/on":true}},
> {"success":{"/lights/1/state/bri":170}},
> {"success":{"/lights/1/state/ct":500}}
> ]
>
> I'm having the same problem when I use GET to inquire about the state of the
> lights.
>
> My best,
> Bruce
>
> On Wednesday, June 17, 2015 at 2:50:36 PM UTC-4, johnbclements wrote:
>> > On Jun 17, 2015, at 11:38 AM, Bruce wrote:
>> >
>> > Thanks so much; however, I'm still having trouble getting the lights to
>> > respond. I had to alter your example somewhat, because Racket was
>> > complaining about an "in-string: contract violation". The following seems
>> > to work:
>>
>> Oops forgot to cc: group:
>>
>> Going back to your original message, it appears that the data was encoded as
>> JSON, not using a urlencoding (that would make sense for a GET, but not for
>> a PUT or POST).
>>
>> Try using this code to generate the data:
>>
>> #lang racket
>> (require json)
>>
>> (jsexpr->string
>> (hash 'on #t
>> 'bri 170
>> 'ct 500))
>>
>> Let me know if you want me to stuff it into the http-sendrecv call.
>>
>> John
>>
>>
>> >
>>
>> > (http-sendrecv
>> > "192.168.1.95" "/api//lights/1/state"
>> > #:method 'PUT
>> > #:data
>> > (alist->form-urlencoded
>> > (list (cons 'bri "1")
>> >(cons 'ct "500")))
>> > #:headers
>> > '("Content-Type: application/x-www-form-urlencoded"))
>> >
>> > However, instead of affecting the light, I just get the following on the
>> > REPL:
>> >
>> > #"HTTP/1.1 200 OK"
>> > '(#"Cache-Control: no-store, no-cache, must-revalidate, post-check=0,
>> > pre-check=0"
>> > #"Pragma: no-cache"
>> > #"Expires: Mon, 1 Aug 2011 09:00:00 GMT"
>> > #"Connection: close"
>> > #"Access-Control-Max-Age: 3600"
>> > #"Access-Control-Allow-Origin: *"
>> > #"Access-Control-Allow-Credentials: true"
>> > #"Access-Control-Allow-Methods: POST, GET, OPTIONS, PUT, DELETE, HEAD"
>> > #"Access-Control-Allow-Headers: Content-Type"
>> > #"Content-type: application/json")
>> > #
>> >
>> > I've also tried sending the message using:
>> >
>> > #:data
>> > (form-urlencoded-encode "\"bri\": 1")
>> >
>> > and changing the #:headers to '("Content-Type: application/json")
>> >
>> > Any thoughts?
>> >
>> > My best,
>> > Bruce
>> >
>> > On Wednesday, June 17, 2015 at 11:35:32 AM UTC-4, Alexis King wrote:
>> >> You probably want to use the net/http-client library, specifically the
>> >> http-sendrecv function. I’m not 100% sure, but I’d guess that the
>> >> equivalent Racket code for your curl command would look something like
>> >> this.
>> >>
>> >> (require net/http-client
>> >> net/uri-codec)
>> >>
>> >> (http-sendrecv
>> >> "192.168.1.20" "/api//lights/8/state"
>> >> #:method 'PUT
>> >> #:data
>> >> (alist->form-urlencoded
>> >> '((on #t)
>> >>(bri 170)
>> >>(ct 500)))
>> >> #:headers
>> >> '("Content-Type: application/x-www-form-urlencoded"))
>> >>
>> >> See
>> >> http://docs.racket-lang.org/net/http-client.html#%28def._%28%28lib._net%2Fhttp-client..rkt%29._http-sendrecv%29%29
>> >>
>> >>> On Jun 17, 2015, at 7:57 AM, Bruce wrote:
>> >>>
>> >>> Hello,
>> >>>
>> >>> I'm new to programming, so patience is appreciated. I'm writing a simple
>> >>> program in Racket to control Phillip Hue Bulbs in a performance
>> >>> environment. Phillips has a simple RESTful API and I'm looking for the
>> >>> Racket commands or library to send the commands. Previously I've used
>> >>> AppleScript to launch bash curl commands, like:
>> >>>
>> >>> curl -x PUT -d '{"on":true,"bri":170,"ct":500}'
>> >>> http://192.168.1.20/api//lights/8/state
>> >>>
>> >>> Is there an easy way to send a similar message in Racket?
>> >>>
>> >>> Thank you,
>> >>> Bruce
>> >
>> > --
>> > You received this message because you are subscribed to the Google Groups
>> > "Racket Users" group.
>> > To unsubscribe from this group and stop receiving emails from it, send an
>> > email to racket-users+unsubscr...@googlegroups.com.
>> > For more options, visit https://groups.google.com/d/optout.
>
> --
> You received this message because you are subscribed to the Google Groups
> "Racket Users" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to racket-users+unsubscr...@googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.
--
Jay McCarthy
http://jeapostrophe.github.io
"Wherefore, be not weary in well-doing,
for ye are laying the foundation of a great wor
Re: [racket-users] Sending RESTful Commands using Racket
John,
Thank you so much. That solved the problem of controlling the lights. However,
I still can't figure out how to get at the response from the Hue Bridge. I
should be receiving:
[
{"success":{"/lights/1/state/on":true}},
{"success":{"/lights/1/state/bri":170}},
{"success":{"/lights/1/state/ct":500}}
]
I'm having the same problem when I use GET to inquire about the state of the
lights.
My best,
Bruce
On Wednesday, June 17, 2015 at 2:50:36 PM UTC-4, johnbclements wrote:
> > On Jun 17, 2015, at 11:38 AM, Bruce wrote:
> >
> > Thanks so much; however, I'm still having trouble getting the lights to
> > respond. I had to alter your example somewhat, because Racket was
> > complaining about an "in-string: contract violation". The following seems
> > to work:
>
> Oops forgot to cc: group:
>
> Going back to your original message, it appears that the data was encoded as
> JSON, not using a urlencoding (that would make sense for a GET, but not for a
> PUT or POST).
>
> Try using this code to generate the data:
>
> #lang racket
> (require json)
>
> (jsexpr->string
> (hash 'on #t
> 'bri 170
> 'ct 500))
>
> Let me know if you want me to stuff it into the http-sendrecv call.
>
> John
>
>
> >
>
> > (http-sendrecv
> > "192.168.1.95" "/api//lights/1/state"
> > #:method 'PUT
> > #:data
> > (alist->form-urlencoded
> > (list (cons 'bri "1")
> >(cons 'ct "500")))
> > #:headers
> > '("Content-Type: application/x-www-form-urlencoded"))
> >
> > However, instead of affecting the light, I just get the following on the
> > REPL:
> >
> > #"HTTP/1.1 200 OK"
> > '(#"Cache-Control: no-store, no-cache, must-revalidate, post-check=0,
> > pre-check=0"
> > #"Pragma: no-cache"
> > #"Expires: Mon, 1 Aug 2011 09:00:00 GMT"
> > #"Connection: close"
> > #"Access-Control-Max-Age: 3600"
> > #"Access-Control-Allow-Origin: *"
> > #"Access-Control-Allow-Credentials: true"
> > #"Access-Control-Allow-Methods: POST, GET, OPTIONS, PUT, DELETE, HEAD"
> > #"Access-Control-Allow-Headers: Content-Type"
> > #"Content-type: application/json")
> > #
> >
> > I've also tried sending the message using:
> >
> > #:data
> > (form-urlencoded-encode "\"bri\": 1")
> >
> > and changing the #:headers to '("Content-Type: application/json")
> >
> > Any thoughts?
> >
> > My best,
> > Bruce
> >
> > On Wednesday, June 17, 2015 at 11:35:32 AM UTC-4, Alexis King wrote:
> >> You probably want to use the net/http-client library, specifically the
> >> http-sendrecv function. I’m not 100% sure, but I’d guess that the
> >> equivalent Racket code for your curl command would look something like
> >> this.
> >>
> >> (require net/http-client
> >> net/uri-codec)
> >>
> >> (http-sendrecv
> >> "192.168.1.20" "/api//lights/8/state"
> >> #:method 'PUT
> >> #:data
> >> (alist->form-urlencoded
> >> '((on #t)
> >>(bri 170)
> >>(ct 500)))
> >> #:headers
> >> '("Content-Type: application/x-www-form-urlencoded"))
> >>
> >> See
> >> http://docs.racket-lang.org/net/http-client.html#%28def._%28%28lib._net%2Fhttp-client..rkt%29._http-sendrecv%29%29
> >>
> >>> On Jun 17, 2015, at 7:57 AM, Bruce wrote:
> >>>
> >>> Hello,
> >>>
> >>> I'm new to programming, so patience is appreciated. I'm writing a simple
> >>> program in Racket to control Phillip Hue Bulbs in a performance
> >>> environment. Phillips has a simple RESTful API and I'm looking for the
> >>> Racket commands or library to send the commands. Previously I've used
> >>> AppleScript to launch bash curl commands, like:
> >>>
> >>> curl -x PUT -d '{"on":true,"bri":170,"ct":500}'
> >>> http://192.168.1.20/api//lights/8/state
> >>>
> >>> Is there an easy way to send a similar message in Racket?
> >>>
> >>> Thank you,
> >>> Bruce
> >
> > --
> > You received this message because you are subscribed to the Google Groups
> > "Racket Users" group.
> > To unsubscribe from this group and stop receiving emails from it, send an
> > email to racket-users+unsubscr...@googlegroups.com.
> > For more options, visit https://groups.google.com/d/optout.
--
You received this message because you are subscribed to the Google Groups
"Racket Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to racket-users+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
Re: [racket-users] Sending RESTful Commands using Racket
> On Jun 17, 2015, at 11:38 AM, bruc...@gmail.com wrote:
>
> Thanks so much; however, I'm still having trouble getting the lights to
> respond. I had to alter your example somewhat, because Racket was complaining
> about an "in-string: contract violation". The following seems to work:
Oops forgot to cc: group:
Going back to your original message, it appears that the data was encoded as
JSON, not using a urlencoding (that would make sense for a GET, but not for a
PUT or POST).
Try using this code to generate the data:
#lang racket
(require json)
(jsexpr->string
(hash 'on #t
'bri 170
'ct 500))
Let me know if you want me to stuff it into the http-sendrecv call.
John
>
> (http-sendrecv
> "192.168.1.95" "/api//lights/1/state"
> #:method 'PUT
> #:data
> (alist->form-urlencoded
> (list (cons 'bri "1")
>(cons 'ct "500")))
> #:headers
> '("Content-Type: application/x-www-form-urlencoded"))
>
> However, instead of affecting the light, I just get the following on the REPL:
>
> #"HTTP/1.1 200 OK"
> '(#"Cache-Control: no-store, no-cache, must-revalidate, post-check=0,
> pre-check=0"
> #"Pragma: no-cache"
> #"Expires: Mon, 1 Aug 2011 09:00:00 GMT"
> #"Connection: close"
> #"Access-Control-Max-Age: 3600"
> #"Access-Control-Allow-Origin: *"
> #"Access-Control-Allow-Credentials: true"
> #"Access-Control-Allow-Methods: POST, GET, OPTIONS, PUT, DELETE, HEAD"
> #"Access-Control-Allow-Headers: Content-Type"
> #"Content-type: application/json")
> #
>
> I've also tried sending the message using:
>
> #:data
> (form-urlencoded-encode "\"bri\": 1")
>
> and changing the #:headers to '("Content-Type: application/json")
>
> Any thoughts?
>
> My best,
> Bruce
>
> On Wednesday, June 17, 2015 at 11:35:32 AM UTC-4, Alexis King wrote:
>> You probably want to use the net/http-client library, specifically the
>> http-sendrecv function. I’m not 100% sure, but I’d guess that the equivalent
>> Racket code for your curl command would look something like this.
>>
>> (require net/http-client
>> net/uri-codec)
>>
>> (http-sendrecv
>> "192.168.1.20" "/api//lights/8/state"
>> #:method 'PUT
>> #:data
>> (alist->form-urlencoded
>> '((on #t)
>>(bri 170)
>>(ct 500)))
>> #:headers
>> '("Content-Type: application/x-www-form-urlencoded"))
>>
>> See
>> http://docs.racket-lang.org/net/http-client.html#%28def._%28%28lib._net%2Fhttp-client..rkt%29._http-sendrecv%29%29
>>
>>> On Jun 17, 2015, at 7:57 AM, Bruce wrote:
>>>
>>> Hello,
>>>
>>> I'm new to programming, so patience is appreciated. I'm writing a simple
>>> program in Racket to control Phillip Hue Bulbs in a performance
>>> environment. Phillips has a simple RESTful API and I'm looking for the
>>> Racket commands or library to send the commands. Previously I've used
>>> AppleScript to launch bash curl commands, like:
>>>
>>> curl -x PUT -d '{"on":true,"bri":170,"ct":500}'
>>> http://192.168.1.20/api//lights/8/state
>>>
>>> Is there an easy way to send a similar message in Racket?
>>>
>>> Thank you,
>>> Bruce
>
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Re: [racket-users] Sending RESTful Commands using Racket
Thanks so much; however, I'm still having trouble getting the lights to
respond. I had to alter your example somewhat, because Racket was complaining
about an "in-string: contract violation". The following seems to work:
(http-sendrecv
"192.168.1.95" "/api//lights/1/state"
#:method 'PUT
#:data
(alist->form-urlencoded
(list (cons 'bri "1")
(cons 'ct "500")))
#:headers
'("Content-Type: application/x-www-form-urlencoded"))
However, instead of affecting the light, I just get the following on the REPL:
#"HTTP/1.1 200 OK"
'(#"Cache-Control: no-store, no-cache, must-revalidate, post-check=0,
pre-check=0"
#"Pragma: no-cache"
#"Expires: Mon, 1 Aug 2011 09:00:00 GMT"
#"Connection: close"
#"Access-Control-Max-Age: 3600"
#"Access-Control-Allow-Origin: *"
#"Access-Control-Allow-Credentials: true"
#"Access-Control-Allow-Methods: POST, GET, OPTIONS, PUT, DELETE, HEAD"
#"Access-Control-Allow-Headers: Content-Type"
#"Content-type: application/json")
#
I've also tried sending the message using:
#:data
(form-urlencoded-encode "\"bri\": 1")
and changing the #:headers to '("Content-Type: application/json")
Any thoughts?
My best,
Bruce
On Wednesday, June 17, 2015 at 11:35:32 AM UTC-4, Alexis King wrote:
> You probably want to use the net/http-client library, specifically the
> http-sendrecv function. I’m not 100% sure, but I’d guess that the equivalent
> Racket code for your curl command would look something like this.
>
> (require net/http-client
> net/uri-codec)
>
> (http-sendrecv
> "192.168.1.20" "/api//lights/8/state"
> #:method 'PUT
> #:data
> (alist->form-urlencoded
> '((on #t)
> (bri 170)
> (ct 500)))
> #:headers
> '("Content-Type: application/x-www-form-urlencoded"))
>
> See
> http://docs.racket-lang.org/net/http-client.html#%28def._%28%28lib._net%2Fhttp-client..rkt%29._http-sendrecv%29%29
>
> > On Jun 17, 2015, at 7:57 AM, Bruce wrote:
> >
> > Hello,
> >
> > I'm new to programming, so patience is appreciated. I'm writing a simple
> > program in Racket to control Phillip Hue Bulbs in a performance
> > environment. Phillips has a simple RESTful API and I'm looking for the
> > Racket commands or library to send the commands. Previously I've used
> > AppleScript to launch bash curl commands, like:
> >
> > curl -x PUT -d '{"on":true,"bri":170,"ct":500}'
> > http://192.168.1.20/api//lights/8/state
> >
> > Is there an easy way to send a similar message in Racket?
> >
> > Thank you,
> > Bruce
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Re: [racket-users] Sending RESTful Commands using Racket
> On Jun 17, 2015, at 8:35 AM, Alexis King wrote:
>
> You probably want to use the net/http-client library, specifically the
> http-sendrecv function. I’m not 100% sure, but I’d guess that the equivalent
> Racket code for your curl command would look something like this.
>
> (require net/http-client
> net/uri-codec)
>
> (http-sendrecv
> "192.168.1.20" "/api//lights/8/state"
> #:method 'PUT
> #:data
> (alist->form-urlencoded
> '((on #t)
>(bri 170)
>(ct 500)))
> #:headers
> '("Content-Type: application/x-www-form-urlencoded"))
>
> See
> http://docs.racket-lang.org/net/http-client.html#%28def._%28%28lib._net%2Fhttp-client..rkt%29._http-sendrecv%29%29
Wait… http-client? That’s *way* better than all of the post-pure-port stuff
I’ve been doing. How long has this been around? Okay, I probably don’t want to
know.
Many thanks!
John Clements
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Re: [racket-users] Sending RESTful Commands using Racket
You probably want to use the net/http-client library, specifically the
http-sendrecv function. I’m not 100% sure, but I’d guess that the equivalent
Racket code for your curl command would look something like this.
(require net/http-client
net/uri-codec)
(http-sendrecv
"192.168.1.20" "/api//lights/8/state"
#:method 'PUT
#:data
(alist->form-urlencoded
'((on #t)
(bri 170)
(ct 500)))
#:headers
'("Content-Type: application/x-www-form-urlencoded"))
See
http://docs.racket-lang.org/net/http-client.html#%28def._%28%28lib._net%2Fhttp-client..rkt%29._http-sendrecv%29%29
> On Jun 17, 2015, at 7:57 AM, bruc...@gmail.com wrote:
>
> Hello,
>
> I'm new to programming, so patience is appreciated. I'm writing a simple
> program in Racket to control Phillip Hue Bulbs in a performance environment.
> Phillips has a simple RESTful API and I'm looking for the Racket commands or
> library to send the commands. Previously I've used AppleScript to launch bash
> curl commands, like:
>
> curl -x PUT -d '{"on":true,"bri":170,"ct":500}'
> http://192.168.1.20/api//lights/8/state
>
> Is there an easy way to send a similar message in Racket?
>
> Thank you,
> Bruce
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[racket-users] Sending RESTful Commands using Racket
Hello,
I'm new to programming, so patience is appreciated. I'm writing a simple
program in Racket to control Phillip Hue Bulbs in a performance environment.
Phillips has a simple RESTful API and I'm looking for the Racket commands or
library to send the commands. Previously I've used AppleScript to launch bash
curl commands, like:
curl -x PUT -d '{"on":true,"bri":170,"ct":500}'
http://192.168.1.20/api//lights/8/state
Is there an easy way to send a similar message in Racket?
Thank you,
Bruce
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