upload image to server

[acronyte]

I know unity has www form to save images to a server through a php or cgi script on the server, but how is this done through tnet? Im thinking it has something to do with saving bytes of a texture and uploading that data to server? I dont know where to begin...

[cmifwdll]

Custom packet handler and byte array? Add handler on server to save byte array to disk. TNet has built-in serialization for Unity's Texture2D, so you don't even need byte array. It uses Texture2D.EncodeToPNG under the hood.

[acronyte]

I managed to get this done using tnet save ....

1.  IEnumerator ProcessPicture()
2.     {
3.         // We should only read the screen after all rendering is complete
4.         yield return new WaitForEndOfFrame();
5.  
6.         // Create a texture the size of the screen, RGB24 format
7.         int width = Screen.width;
8.         int height = Screen.height;
9.         var tex = new Texture2D(width, height, TextureFormat.RGB24, false);
10.  
11.         // Read screen contents into the texture
12.         tex.ReadPixels(new Rect(0, 0, width, height), 0, 0);
13.         tex.Apply();
14.  
15.         // Encode texture into PNG
16.         byte[] bytes = tex.EncodeToPNG();
17.         //Destroy(tex);
18.  
19.         StartCoroutine(UploadPicture(bytes));
20.     }
21.  
22.  
23. IEnumerator UploadPicture(byte[] b)
24.     {
25.         yield return new WaitForSeconds(1);
26.  
27.         TNManager.SaveFile("filename" , b);
28.  
29.     }

[cmifwdll]

Awesome, even easier

[acronyte]

Im now trying to download that file , and apply it to a texture. All works well, except however, I randomly sometimes receive a "Malformed data packet" when downloading.

1. public void GetPicture()
2.     {
3.         TNManager.LoadFile("filename.bytes", OnLoadFile);
4.     }
5.  
6.     void OnLoadFile(string filename, byte[] data)
7.     {
8.         if (data.Length == 0)
9.         {
10.  
11.         }
12.         else
13.         {
14.  
15.             Debug.Log("download picture a success!");
16.             Texture2D tex;
17.             tex = new Texture2D(4, 4, TextureFormat.DXT1, false);
18.             tex.LoadImage(data);
19.             tex.Apply();
20.  
21.             mytexture.texture = tex;
22.         }

Unity says the "Malformed data packet" error is coming from 'GetPicture' function.

[cmifwdll]

Which version of TNet? I used your exact code w/ TNet 3.0.9 and received no errors.

[acronyte]

I managed to solve getting the "Malformed data packet" error.....

In my code where is says

1. // Encode texture into PNG
2.         byte[] bytes = tex.EncodeToPNG();

I changed that to

1. // Encode texture into JPG
2.         byte[] bytes = tex.EncodeToJPG(30);

which basically saves as a jpg rather than a png.... The difference between the two save types is a larger resulting file (png larger than jpg)....

The orginal code saved the png at 400kb, while the new code saves as jpg at 20kb...

I can only assume the error was caused by the size of the file?

[cmifwdll]

TNet should support packets up to 16777216 bytes (16 MB).

I'd say it's more likely an issue with the Buffer class not packing the packets properly. I recall there being a bug with Buffer's length or size property back in TNet 2, don't remember if it was officially fixed.

Either way, glad you found a workaround

[ArenMook]

In Sightseer I let server admins upload their own flag textures, and I've seen fairly large ones (>700 kb) being used without issues. Can't say I've ran into the "malformed data packet" error. Maybe the SaveFile didn't have a chance to complete?