I am trying to implement DASH player in my local machine which is both server and client. I put the mpd and the dataset in the local host.How should I change the base url of mpd?
just remove the base url, then the content is retrieved relatively to the MPD location. Which player are you using for playback?
Related
How does an img tag works on browser?
If I have set src property to some image hosted online, and I use that in my app. Then from what I know is our app will download the image from that url and render it inside our application. But I'm confused about how will the load distribution be? What part of load will come on our server(say we are fetching that url from an API) and what will come on the url's server?
I'm actually using google's photo api(which returns url of the image hosted on their server) to render the images on my webpage.
So the download would be from their server but say if the image size is 4mb then will our network call also download 4mb since in the end the image is on our html
One of the big innovations of when the World Wide Web was first invented, was that it combined two concepts:
The identity/name of a thing (like a document or image)
The instructions on how to find it
And it packs those in a URL. So the great thing about browsers was that you no longer needed tell it what server to connect to find the thing you want. The browser just looks at a URL, and will connect to server with the name from the 'host' part of the URL, using the port in URL and protocol and retrieve the path.
So given:
<img src="http://example/image.jpg" />
The browser has everything it needs to find the image, and will do so without needing help from the server that rendered that image tag.
I have 3 servers running as a cluster managed by flynn (a bit like heroku) which I can attach a shared drive to so that in theory they all have access to the same files.
However I'm a bit unsure if it's possible to access a mounted drive from my nodejs app to save and access files.
Can anyone shed some light on if this is possible and roughly how I'd go about doing it.
With node.js, your file system path has literally nothing to do with the URLs that your server supports. node.js servers do not serve ANY files by default (unlike some other servers).
If you want an incoming browser request for http://example.com/uploads/test.jpg to read a file from /mnt/shared/uploads, then you have to create a web server route handler that includes the incoming path http://example.com/uploads/test.jpg and then reads the data from /mnt/shared/uploads and writes that data out as the http response.
Depending upon what web server environment you are using, there are helpers to do that mapping. For example, express has express.static() that helps with some auto mapping. But, the web server by itself does not server any files like this automatically.
So, if what you want is that all incoming requests for http://example.com/uploads/* will be read from /mnt/shared/uploads/*, then you can use express.static() to help you do that like this:
app.use("/uploads", express.static("/mnt/shared/uploads"));
This will take any path it finds after /uploads and look for that path in /mnt/shared/uploads. If found, it will automatically serve the content as static content.
So, it would work like this with the incoming URL shown first and the place express.static() would look for a matching file:
/uploads/test.jpg ==> /mnt/shared/uploads/test.jpg
/uploads/bob/test.txt ==> /mnt/shared/uploads/bob/test.txt
I have used p:fileUpload to upload an image. I don't really need to upload the image to the server but I just need to get the full local URL(ie.c:/.../../..) of the file(image) which is saved in the local disk, I tried but I just got the filename with the extension. This is an web application which is used locally, so both sever and client are on the same machine. The URL need to be saved in database.
For security reasons, browsers don't send the full client side file path. They only send the file contents and the file name. Ancient browsers and MSIE are the only browsers who expose the security bug of still sending the full client side file path along with the file upload. You should not be relying on this security bug in your application.
You're supposed to grab the file contents in flavor of InputStream of byte[] and write it immediately to a more permanent storage location yourself by FileOutputStream or perhaps via a #Lob to a BLOB column in DB. You can if necessary use File#createTempFile() to autogenerate an unique filename.
Note that a local disk file sytem path can't represent a valid HTTP URL which the client could use to obtain the file. Browsers like Firefox refuse to serve file:// URLs when the initial webpage itself is opened by http:// instead of file://. So you really need to serve those uploaded files back via a web server. It's recommended to just store only the file name (not full path!) in the DB. You can then configure the webserver to publish a certain folder to the web, or create a simple servlet to serve a certain folder to the web.
See also:
How to save uploaded file in JSF
How to convert Part to Blob, so I can store it in MySQL?
Load images from outside of webapps / webcontext / deploy folder using <h:graphicImage> or <img> tag
I have soundmanager2 as player for mp3 sounds.
When I loading .swf file from same server as webapp its playing mp3 files normally
When I load .swf file from another server its not okay
The only change i added is:
soundManager.setup({
url: 'http://s3.amazonaws.com/mybucket/swf/'
})
In firebug>Net bookmark i can see that swf loaded but no mp3 load (when i click play in site)
I added crossdomain.xml but this not helped.
Worked according to this sample: http://www.schillmania.com/projects/soundmanager2/doc/getstarted/
Assume my webapp running locally at: http://local.dev
and swf served in another localapp running under http://local.media
so when i do:
url: 'http://local.media/swf/'
from local.dev app, its not loading nor playing.
Even for amazon it has to have crossdomain.xml :-\ even if i managed ACL well
Is there any way in which I can download all the first visits to a webpage to my local box and all the subsequent visits will retrieve the data from the local box rather than the internet? That is, like a service is running on a port and if i access that port and not the HTTP port, i get the data from local box?
I need to use this service for parsing webpages whose contents might change every time, so that i get the same content to work with.
You can use a caching proxy such as squid.
The squid service stores the webpages locally and the next requests return the stored file.
Sounds like you're talking about a proxy server
I need to use this service for parsing webpages whose contents might change
Have a look for a spidering engine, e.g. pavuk.