SoundManager2 gets a data error and I cannot visualize anything?
or
I cannot access the song, permission denied?
or
It works when I first play it, but if I pause it and play again, I get a data error?
This has recently been fixed, as it was partly due to half of the needed files being there. Now it is fixed however, it still might not work off the bat.
The obvious first step is you use the api to get the track stream_url, which looks like http://api.soundcloud.com/tracks/69322564/stream?client_id=CLIENT_ID
If you use this as the media url in SoundCloud, you will find that you press play, and if you have visualizations they will work, and everything is nice. However if you now pause the track, and press play again, you will get a data error, metadata will cease to be accessible, and your visualizations will break. This is because api.soundcloud.com has a crossdomain file, and when you access it you get a 3XX redirect to ec-media.soundcloud.com. This site now also has a crossdomain.xml file, however that pesky 3XX redirect ruins both permissions, so you hit an error.
The answer to this is you make the redirect leap first, outside of soundmanager2, so that there is no redirect that will break it. For instance in Python:
import urllib2
starturl = 'http://api.soundcloud.com/tracks/69322564/stream?client_id=CLIENT_ID'
res = urllib2.urlopen(starturl)
finalurl = res.geturl()
print finalurl
This could be more elegant, but it will print the url that the api redirects to. This url will look something like http://ec-media.soundcloud.com/2j0lNF81jv9m.128.mp3?LONG_STRING&AWSAccessKeyId=ACCESS_KEY&Expires=1355864871&Signature=SIGNATURE
This domain has the crossdomain.xml file, and due to the fact that there is no redirect, things will run smoothly, data will be accessed, all will be well.
"I did this and it worked, but now it says the file is forbidden"
Now we draw your attention to the previous url, in particular &Expires=1355864871. The file you are redirected to is not permanent, so you need to grab it each time. For me this is easy, I work in django so I can simply run the python above in my views scripts. You'll have to find a way to implement this in your code of choice. (Should work in javascript too).
After all this is done, you should be able to pause and play as much as you want, and retrieve the waveform data, the EQ data, and the peak data. With these things, some fun things can be done. Hope this helped.
Related
We have a website that requires a username and password. Once logged in, the user can select a link to a PDF in the web browser. Once this has happened they are able to see the full URL path of the PDF, they could copy and paste the path into a different browser without logging in, or send the address to someone else to look at.
I am asking this for a co-worker so I am not too sure on what is needed, but they want to change it from say "documents/customerlist.pdf" to "documents/info.asp" (not sure what the file type should be, maybe just "documents/info"?) I think that is what the goal is. Is this possible? If someone could point me in the right direction we might be able to figure it out!
I should think you can do this in ASP. You'll need to deliver the PDF dynamically via an ASP page, which detects the user's session and only serves the data if they are suitably authenticated (so copying the URL to a different browser/machine will result in a 404 or access denied, as you wish). You'll need to read the data from file and binary-write it to the browser, and set HTTP headers for mime-type, content length etc.
I'd start off with serving it on a pdf.asp?file=customerlist URL, but you can later experiment with changing this to something more readable (docs/customerlist.php). You'll need to look into URL rewriting here.
So, that's the general approach. If you do a web-search around these topics ("ASP serve binary file", "ASP URL rewriting") you are sure to get plenty of examples.
We have a few sites that run on different CMS (Drupal, Joomla etc.). We would like these sites to share a phpbb forum (on a different domain) and for people that register on each site to have a user account automatically created on the forum as well.
For that I have writen a script that sends a php curl request that mimics phpbb's registration process.
First, I tired a simple sign up form and it worked well. But since the forum uses Captcha I needed to add a form to my script so the user could input the Captcha string. And here things did not pan out so well. After many hours of examining the phpbb code files I managed to more or less put my finger on where the problem occurs, although my limited phhbb knowledge prevents me from finding a solution so I thought I would ask for help here.
My script sends a curl request to ucp.php?mode=register to get past the "agree to terms" screen, parses the result to get the tokens and creation time and then sends another request. The returned value is the registration screen with the Captcha image. Except no image can be seen as the url to the image script is relative and so I alter the output result and make the url an absolute url.
So instead of
./ucp.php?mode=confirm&confirm_id=xxxxxxxxxxxxx&type=1
I alter the code to
http://www.mydomain.com/phpbb3/ucp.php?mode=confirm&confirm_id=xxxxxxxxxxxxx&type=1
And get a Captcha image (xxxxxxxxxxxxx is the confirm_id string that changes every time).
And this is where I hit a brick wall. The image generated is never the correct captcha string.
If I var_dump the $captcha variable in ucp_register.php I can see the correct string which is never the one in the Captcha image. I placed bits of code in the phpbb files that output certain variables to help me understand what's going on behind the scenes. Here is what I managed to gather, hoping some one could tell me why it's happening or at least point me in the right direction:
In captcha_abstract.php and captcha_gd.php the is the variable $this->confirm_code. When I dump this into a file in both cases I can see the right captcha code (same as when I output the $captcha var in ucp_register.php).
In ucp_confirm.php there is the $captcha->code var which turns out holds the string that I see when I output the Captcha image.
When I just go through the registration process normally through the browser $this->confirm_code and $captcha->code holds the same value.
So it's obvious that changing the ucp.php?mode=confirm line above is causing this, yet I can not avoid that as if I don't do it I don't get a Captcha Image.
I'm trying to achieve urls in the form of http://localhost:9294/users instead of http://localhost:9294/#/users
This seems possible according to the documentation but I haven't been able to get this working for "bookmarkable" urls.
To clarify, browsing directly to http://localhost:9294/users gives a 404 "Not found: /users"
You can turn on HTML5 History support in Spine like this:
Spine.Route.setup(history: true)
By passing the history: true argument to Spine.Route.setup() that will enable the fancy URLs without hash.
The documentation for this is actually buried a bit, but it's here (second to last section): http://spinejs.com/docs/routing
EDIT:
In order to have urls that can be navigated to directly, you will have to do this "server" side. For example, with Rails, you would have to build a way to take the parameter of the url (in this case "/users"), and pass it to Spine accordingly. Here is an excerpt from the Spine docs:
However, there are some things you need to be aware of when using the
History API. Firstly, every URL you send to navigate() needs to have a
real HTML representation. Although the browser won't request the new
URL at that point, it will be requested if the page is subsequently
reloaded. In other words you can't make up arbitrary URLs, like you
can with hash fragments; every URL passed to the API needs to exist.
One way of implementing this is with server side support.
When browsers request a URL (expecting a HTML response) you first make
sure on server-side that the endpoint exists and is valid. Then you
can just serve up the main application, which will read the URL,
invoking the appropriate routes. For example, let's say your user
navigates to http://example.com/users/1. On the server-side, you check
that the URL /users/1 is valid, and that the User record with an ID of
1 exists. Then you can go ahead and just serve up the JavaScript
application.
The caveat to this approach is that it doesn't give search engine
crawlers any real content. If you want your application to be
crawl-able, you'll have to detect crawler bot requests, and serve them
a 'parallel universe of content'. That is beyond the scope of this
documentation though.
It's definitely a good bit of effort to get this working properly, but it CAN be done. It's not possible to give you a specific answer without knowing the stack you're working with.
I used the following rewrites as explained in this article.
http://www.josscrowcroft.com/2012/code/htaccess-for-html5-history-pushstate-url-routing/
Can we stop user not to print our webpage or save it with the use of some scripts of some kind of that?
No, there is no way. You won't stop users trying to rip the page and will annoy legitimate users. Even if you do find a way, how will you prevent a screenshot ?
There is no way to stop people saving the web page from the browser unless you control what browser they use.
Most browsers will create a temporary file on the user's disk in order to cache your page, therefore it is already saved. There are 0 things you can do to prevent this.
Everything you put into a web page has to reach the user's computer, therefore you cannot stop them from saving it. If they really want your content they can just grab the packets before they hit the browser, thus circumventing anything you might do.
If you do not want people to be able to keep your content, do not give it to them.
I need to display pages in a tutorial fashion. I looked in to netsupport, beamyourscreen and other possibilities but, I do not want the viewers to download anything. I cannot use gd / send screenshots due to audio / video instructions embedded in some of the pages.
Basically, I need the ability to "refresh" a users browser window to a different page via an interface on my end. Whether via a form submission, javascript or any other type of "controller" that allows me to change the page on the viewers browser. PERL preferred but, PHP / javascript whatever works and is cross browser. I set up a simple javascript page forward timer that "works" but, page load times and conversation interruptions are a huge factor.
The entire tutorial website will be developed around this ability.
I was looking in to curl / cron / wget methods but, found little information.
I have seen forum and chat scripts that basically perform a similar task but, there must be a simple(ish) solution in leau of hacking up another script to suit my needs.
I do not want others to control the pages either. The site really, only needs to be accessable during the tutorial however, It "could" remain web accessable as long as user interaction was normal unless (being controlled).
The initial site concept is based on instructing people how to properly introduce new pets into a home. Will be operated by a veteranarian that saved my pets life. I wanted to give something back.
Possible? I really appreciate simple examples etc...
You have no other way but to keep polling the server for "instructions" using javascript. No, you can't send nothing to the end user browser, neither curl nor wget.
Mainly, you'll have to set up a simple request/response protocol between the browser and the server.
If you want to go deeper, you can use something like cometd/meteord/etc. If not, a hidden iframe that reloads himself and receives pages with javascript code for the needed actions can do the trick.
Another alternative.
With javascript dopolling and single character flatfile. Have a simple one character flatfile with a single var. Write it in perl (it is faster and uses less resources than php). The parent script calls a javascript variable in a flatfile. It hits the flatfile and goes wherever the var sets it. The flatfile is written to by the controller. Done.
I guess you could also rename an empty flatfile and use that as the controller. I am usure which is faster, open and read a specific file or hit the directory and return the file name. On the controller side, opening and writing to a file vs renaming a file. Maybe they counter each other in resources and time?
This way the site can act as a normal site. When you want to have remote users see a "presentation" (automatically being shown the site pages at the controllers pace), the controller activates polling and tells the viewers to push a start button. This allows a remote instructor to load pages for the viewers at his leisure.
It is a simple solution that works with nothing really sophisticated going on. No frames are needed either. Just need javascript enabled.
Any better suggestions are welcome!
It occurred to me that what you might want to use is HTML Push technology. Check out the wiki, they have several links. I have never used it myself