Roku Developer Program

[squirreltown]

I have an rss feed working fine from an http GET request from the Roku. I am trying to change it to http POST. I am getting an error and the feed isnt being parsed. I know the rss feed is outputting the proper format/info from the POST request, but am having trouble capturing it back at the Roku.
Here is the error

<br />
Found error in the file '<b>/home/phcom/public_html/web/rss13/index3.php</b>' at line <b>30</b>.<br />
Called '<b>getAll</b>' function with erroneous argument #<b>0</b>.<br /><br />

and the calling function:

Function  SendFavsViaPost(feed_url)
 	
	strx = ReadAsciiFile("tmp:/apfavorites")
	
	m.http.SetUrl(feed_url)
	m.http.PostFromString("AID=" + strx)
	xml=m.http.GetToString()
	
	print xml
	
	rss=CreateObject("roXMLElement")
	if not rss.Parse(xml) then stop
	print "rss@version=";rss@version
	pl=CreateObject("roList")
	for each item in rss.channel.item
		pl.Push(newPhotoFromXML(m.http, item))
		print "photo title=";pl.Peek().GetTitle()
	next
	return pl

End Function

[RokuChris]

That's a PHP error. It's being generated by the server, not by your BrightScript.

And it looks like you're doing a POST followed by a GET, so when you print the response, it's the result of the GET not the POST. You probably want to do one or the other, not both.

[squirreltown]

Thank you Chris, I'm obviously not clear on this.

this is supposed to append to the URL in a POST request right? - m.http.PostFromString("AID=" + strx)

And then this is supposed to capture the body result from the request - xml=m.http.GetToString()

without the second line above, how do i get the result into the xml variable? There is no PostToString() is there?

[RokuMarkn]

Both PostFromString and PostFromFile discard the response. If you want the response from a POST you should use AsyncPostFromX. The body is available from the roUrlEvent (GetString).

--Mark

[squirreltown]

Thank you Mark, I read that but it seemed like the GetToString() approach might work since the docs don't actually say it only works on GET requests but it should have been obvious. Could you help me out on how to write that line since there are no examples in the docs and don't know how to get a URL event - Does it have to be in a loop like some other events?

m.http.AsyncPostFromString("AID=" + strx)
	xml=m.http.GetString()

this of course doesnt work.

[squirreltown]

Ok tried this but the result is not getting into the variable.

Function  SendFavsViaPost(feed_url)
 	
	strx = ReadAsciiFile("tmp:/apfavorites")
	m.http.SetUrl(feed_url)
	m.http.AsyncPostFromString("AID=" + strx)
	
while true
      msg = Wait( 100, m.port )
      If msg = invalid Then
         ' Timeout
         Return "Error: timed out"
   	 Else If Type( msg ) = "roUrlEvent" Then
 		Return msg.GetString()
      	xml =  msg.GetString()
exit while
      
      End If
end while
	
	
	rss=CreateObject("roXMLElement")
	if not rss.Parse(xml) then stop
	print "rss@version=";rss@version
	pl=CreateObject("roList")
	for each item in rss.channel.item
		pl.Push(newPhotoFromXML(m.http, item))
		print "photo title=";pl.Peek().GetTitle()
	next
	return pl

End Function

[RokuMarkn]

Do you really want to return from SendFavsViaPost as soon as you get the roUrlEvent? None of the code after the while loop will be executed.

--Mark

[TheEndless]

"RokuMarkn" wrote:
Do you really want to return from SendFavsViaPost as soon as you get the roUrlEvent? None of the code after the while loop will be executed.

--Mark

He's also only waiting 100 milliseconds for a response from the server, which seems awfully short, so I'd bet he's hitting the "msg = invalid" condition first.

[squirreltown]

I'm getting msg=invalid with it set to 8000 which is about 4 times longer than it ever takes. This response works fine with a GET request, and I know the POST is getting through because its writing an xml file to the server at the same time so i can check. I'm out of ideas.

[RokuMarkn]

Did you set m.port as the message port for m.http?

--Mark