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#1 03-16-2008 07:22:08
- clairebear
- New member
Null SendE -please help?
Whenever I try to submit my picture on ShiPainter, it pops up saying "Null SendE". Is there anything I can do as this was a major piece I've been working on my oekaki and I desperately want to finish it?
I tried switching from Firefox to IE, I tried restoring the applet and re-submitting, but it keeps coming up with the same problem. What does it relate to??
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#2 03-16-2008 21:43:43
- Waccoon
- Administrator
Re: Null SendE -please help?
"Null Send Error" means that the post has been rejected by the server, or the applet was not able to send data over a socket connection with the server. It can be difficult to track down this problem. Most of the time this happens if the post data is too large (due to a large canvas), or the server will not accept the RAW_POST_DATA method. Free hosts tend to have this issue.
Is this your oekaki? Is this the first time you have tried to submit a drawing to a particular board? Can you upload pictures with the "Upload" feature (as opposed to drawing pictures in the applets)? This is a Java/applet issue, so using a different web browser will not help.
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#3 03-19-2008 11:55:10
- clairebear
- New member
Re: Null SendE -please help?
I am using a rather large canvas (approx. 900 x 700) with animation to preserve the layers (it can take 15+ hours for this drawing which I cannot give in one sitting).
Yes, it is my oekaki, but I am not on a free server. It costs me about $140 per year and aside from the oekaki (on which I tend to be the only artist -I use it more as a private oekaki for producing pictures; one a week if that) the only page I have is my gallery. It is not the first picture I have submitted, nor the longest, and I have uploaded pictures before. It is, however, the largest piece I have worked on.
I waited a few hours and tried again and this time I did not get the Null error, but I am worried that given it happened twice on this picture it will happen again. Would there be anything I can do to ensure I can finish the picture as I am only about half way through? Anything on the oekaki control panel settings etc? Would freeing up space by deleting older animated oekaki pictures help (although I do have only about 40 pictures in total)? Or if I contact my host, is there any particular issue I should point out or is it just bandwidth/file space?
Also, should I check for java updates? Or would that not be recommended when a picture is safety saved.
Thank you for your help Wacoon, and of course for Wacintaki :3
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#4 03-22-2008 21:14:16
- Waccoon
- Administrator
Re: Null SendE -please help?
Well, just a heads up: the oekaki applets were designed for quick pictures, not 900x700 masterpieces, so lost data and transmission errors can happen at any time. Oekaki applets should not be treated as serious paint programs (after all, they have no proper "save" feature). If you are taking several hours on a picture, it's a good idea to take a screenshot every now and then. Having a dedicated program for taking screenshots is a good idea, too, so you don't have to deal with MS Paint or bother with a full-blown photo editing program.
Animations are also a real problem, because everything except for undos is tracked. The animation data can easily exceed the filesize of the picture itself, and trying to read an animation that large when retouching can freeze the applet completely. In that case, you can resume the drawing from the picture data, but not from the animation. I have a feeling that you won't be able to retouch the image via its animation, so your layers are probably not going to be retained.
The oekaki applets submit pictures by opening a network socket and streaming the data to the server, and then they wait for a plain text confirmation that the data was received. This is risky, because there is no checksum verification, and corruption can occur. If a socket connection is refused or prematurely closed, you can get a Null Send Error, or even worse, a broken picture that won't load into a web browser correctly, or at all. My guess is that the submission problem is related to the amount of data you're trying to send (the canvas and/or animation is too large), and this can lead to intermittent rejections. Deleting pictures on the server won't help; it's the picture you're trying to send that's the problem, not what you have on the board, or a control panel setting.
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