Seeking a HTTP driver

[Mr .Flibble]

Are there any HTTP drivers available for C4? Something that lets you do a HTTP GET or POST, ideally sending along variables in the request.

Edit: why do I think this would be useful? Because it would allow people to easily build 'drivers' off the controller, in their preferred programming language on their preferred platform. If you wanted to send an SMS you can just make your own SMS app with a HTTP interface and call http://server/sendsms?to=12345678&msg=abcdef

etc.

[thecodeman]

A little searching on http get led me to this, which might help you, but this sort of information is out of my wheelhouse and more in line with RyanE and AlanChow

http://c4forums.com/viewtopic.php?id=12963

[LSDave]

There is a generic TCP/IP driver out there. I think it sells for $50 and can hand about 25 messages.

Here is the link to the site

http://p5.hu/hu/

And i'm set up as an authorized dealer with them.

[wappinghigh]

Fabulous idea.

Would an example of a use for this be turning on/off the DDNAS ? You can already do this by HTTP...

...but there is nothing specific in the DDNas c4 driver..

Maybe James could get onto Writing an HTTP driver...( when he's better, and down to task no 99...)

[Mr .Flibble]

A little searching on http get led me to this, which might help you, but this sort of information is out of my wheelhouse and more in line with RyanE and AlanChow

http://c4forums.com/viewtopic.php?id=12963

Perfect. That's exactly the thing I needed. With that and by looking at some existing drivers I'll be able to work out how to make some sort of HTTP driver.

[RyanE]

BTW, if you're doing it in 2.2 or later (even better in the upcoming 2.3 release), it's a one-line call for a url Get or Post.

C4:urlGet(URL)

I don't remember the parameters or what it calls, but it's pretty darn easy.

RyanE

[RyanE]

Duh, the other post says that, but the urlGet is easier.

RyanE

[Mr .Flibble]

BTW, if you're doing it in 2.2 or later (even better in the upcoming 2.3 release), it's a one-line call for a url Get or Post.

C4:urlGet(URL)

I don't remember the parameters or what it calls, but it's pretty darn easy.

RyanE

Thanks. Yup, I'm there. Right now I'm trying to get my head around how to pass user variables about now. Can't work out how to get them...

the API docs say

"Gets and prints the User Variable registered with the project as variable 209:

print(C4:GetDeviceVariable(100001, 209))"

But right now I see variables named with string keys in Composer, not numbers. I can't work out how to get the numerical variable ID.

Is there a function like C4:GetUserVariable("userVarName") or C4:UserVar["userVarName"] ?

I think I should probably be looking for a way to pass a user variable key to the driver at runtime instead than hard coding a variable key, but that's another day's adventure.

[RyanE]

I don't think there's a way to get numeric variables the same way you can with string, by declaring parameters as string types.

What variable values are you trying to send? There may be a better way to do it.

RyanE