WEBSERVER EXTENSION FOR FEZ COBRA using SD Card help

NETMF & Gadgeteer
1

Wouter Huysentruit, was generous enough to give this example:
[url]http://code.tinyclr.com/project/243/webserver-extension-for-fez-cobra/[/url]

I would like to add the ability to get my web files from SD card instead.
Can anyone provide a bit of help for the newbie ?

2

The webserver handles two type of requests.

  1. You can add files
    To add a single file: call AddFile
    To add a complete directory with subdirs: call AddVirtualDirectory
    The first argument is the virtual path on the webserver: so “/” means the file will be accessible from the root. When you call: AddFile( “/test” , “SDpath\image.jpg” ) it will host the image.jpg on url http:///text

(If you need a hint on how to access the SD card, see another example: http://code.tinyclr.com/project/362/rlp-streaming-audio-driver/ )

  1. You can add events
    F.e. you want to host dynamic data:

 AddEvent("/readtemp", webServer_ReadTemp);

 private static void webServer_Capabilities(object sender, WebServer.EventCallbackEventArgs e)
 {
            e.ResponseContentType = "text/xml";
            e.Response = ReadTempAsXml();
 }
3

Thanks for the time, will give it a try.

4

The webserver also has a DefaultFile property which sets the default file of a virtual directory. DefaultFile is set to ‘index.html’ by default.

F.e. when you call


AddVirtualDirectory("/mysite", "path", true);

All files in ‘path’ will be hosted on http:///path/filename.ext
when browsing to http:///path/ the DefaultFile (index.html) will be transmitted.

5

My brain just poofed smoke out my ears. This is far beyond what i know. Will have to finish the class i am taking and revisit this at a later date :wink:

I do thank you for the time though.

P.S just out of curiosity, can one also add the web files to the project instead of the SD if they wanted to ?

6

are you on google+ or facebook ? otherwise give me your e-mail so I can add you, I’m willing to get that beast started on your board :slight_smile:

Or join the chat on tinyclr

7 

        public static void Main()
        {
            using (WebServer server = new WebServer())
            {
                webServer.AddVirtualDirectory("/", volume.RootDirectory, true);
                //server.AddEvent("/", new WebServer.EventCallback(sendForm));
                //server.AddEvent("/form", new WebServer.EventCallback(analyseForm));

                // Sleep forever
                Thread.Sleep(Timeout.Infinite);
            }
        }
8 


        public static void Main()
        {

            if (PersistentStorage.DetectSDCard())
            {
                using (PersistentStorage storage = new PersistentStorage("SD"))
                {
                    storage.MountFileSystem();
                    VolumeInfo volume = new VolumeInfo("SD");
                }
            }
            else
            {
                Debug.Print("SD card not detected");
            }


            using (WebServer server = new WebServer())
            {
                server.AddVirtualDirectory("/", volume.RootDirectory, true);
                //server.AddEvent("/", new WebServer.EventCallback(sendForm));
                //server.AddEvent("/form", new WebServer.EventCallback(analyseForm));

                // Sleep forever
                Thread.Sleep(Timeout.Infinite);
            }
        }
9 

public static void Main()
        {
            if (PersistentStorage.DetectSDCard())
            {
                using (PersistentStorage storage = new PersistentStorage("SD"))
                using (WebServer server = new WebServer())
                {
                    storage.MountFileSystem();
                    VolumeInfo volume = new VolumeInfo("SD");

                    server.AddVirtualDirectory("/", volume.RootDirectory, true);

                    Thread.Sleep(Timeout.Infinite);
                    storage.UnmountFileSystem();
                }
            }
            else
            {
                Debug.Print("SD card not detected");
            }
        }
10

@ Wouter,

Thank you again so much for the chat session. Its working great, and i just cannot thank you enough for taking the time to guide me.

11

you’re welcome. we’re always happy to help :slight_smile:

12

Can one get the files from flash instead of from SD card ?
In my project can i add the web site files to the resource folder and have it grab them from there ?

13

Of course. You use AddEvent like in the example and then read your resource file and return it.

14

Gotcha, thanks.

15

The only difference will be that, when hosting files from SD-card, the file is read in smaller blocks, so less memory is used. Now you’ll have to load the whole file in RAM and duplicate it, to pass it as a result.

16

how exactly am i getting my resource file to work in the call ?

// This is my resource file
Resources.StringResources.index



private static void sendForm(object sender, WebServer.EventCallbackEventArgs e)
{
  
   // IS this what would go here ?
    e.Response = Resources.StringResources.index;

    e.ResponseContentType = "text/html";



}
17

use this:


e.Response = Resources.GetString(Resources.StringResources.index);
e.ResponseContentType = "text/html";
18

Thanks all, its working now :wink:

19

ok, got another one.

what if its a BinaryResources file


e.Response = Resource.BinaryResources.index1;
e.ResponseContentType = "application/x-shockwave-flash";
20

Same thing except Resources.GetBytes