Binary multipart upload by HTTP POST to web service

[bluedude]

I have a simple idea but i'm not sure how to code it. I want an image captured by the camera uploaded by HTTP to a web service.

Anyone any ideas on how to do this? The image should be uploaded binary.

 

[Erel]

There is an example in the manual that uses the HTTP PUT method to upload a binary file: HTTP
I guess that it shouldn't be too difficult to convert it to use POST method instead (you will need to first set the content type and length which you can find with FileSize).

 

[bluedude]

You think it would work with this..

TwitPic / Share photos on Twitter

 

[Erel]

It will be a little bit more complicated.
I've found some c# code that deals with this problem: how to upload file via c# code - bytes
I will convert it to Basic4ppc and upload it tomorrow.

 

[bluedude]

Any succes with this?

Erel,

Any luck with this?

 

[Erel]

That was a long day
I've uploaded a small program based on this code: how to upload file via c# code - bytes
I don't have an account so I get an 'unknown user' error.
Tell me how it went.

 

[Aspire89]

I don't have an account so I get an 'unknown user' error.
Tell me how it went.

Thanks, good example.
I have an account on this site and tried how it works. In response, I receive an error:

<? xml version = "1.0" encoding = "UTF-8"?>
<rsp stat="fail">
<err Code="1002" msg="Image not found" />
</ rsp>

The path to the file checked, all OK.
Then he looked at his request in HttpAnalizer. Although the method is POST, and POST data is empty, and the username and password into the stream.

 

[Erel]

It did send the data using POST. I'm sorry but I don't know what is the problem.

 

[Aspire89]

I used the following code:

    request.New1("http://tweeterwall.mallplace.com/tw/vote")
    request.Method = "POST"
    request.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; ru; rv:1.9.1.1) Gecko/20090715 MRA 5.3 (build 02560) Firefox/3.5.1 (.NET CLR 3.5.30729)"    
    Request.ContentType = "text/javascript"
    stream.New1(Request.GetStream,False) 
    name = "uid=27024&country_id=68&token=049226fb46577eb02790105aae66dc1e"
    stream.WriteBytes(stream.StringToBytes(name))
    response.New1
    request.GetAsyncResponse

and HttpAnalizer received the following (details in the screenshot)

 

[Aspire89]

There are 2 similar resource: ImageshackAPI - imageshackapi - Project Hosting on Google Code and YFrogAPI - imageshackapi - Project Hosting on Google Code, can they try?​

 

[bluedude]

Problem too

Hi Erel,

First let me say that you are very quick in replies etc! You do a great job running this forum and software.

The multipart post solution for Twipic does not work for me, same problem as the other user.

What i'm basically looking for is a generic sample that combines posting fields and a file in one call. Im working on a product that can talk to a whole bunch of web services (POST) and this binary upload stuff frustrates me.

For some services i write my own small PHP wrappers to make it easier but the uploading stuff in combination with input fields I cannot get to run.

This sample has a lot of stuff I don't understand (boundary).

Hope you have a generic sample and maybe even better with Async stuff.

 

[Erel]

I'm sorry but I'm not an expert in this field too.
I did my best to convert this c# code into Basic4ppc.

 

[bluedude]

Understood

Ok, that is understood.

Need to figure out how to do it in BASIC4PPC. Posting data is simple but not sure how to combine file and input fields.

 

[bluedude]

Multipart upload

Erel,

This multipart stuff is killing me, there are so many projects where you need HTTP upload to create interesting applications.

Here is s simpler sample in VB: Sample Visual Basic Examples by Conor Hackett - TweetPhoto Developers | Google Groups

Has anyone solved this in the end?

Is there anyone who has time to develop a dll for this? I think a generic multipart upload dll would be awesome.

Without it we are very limited regarding file operations, FTP is not really an option because none of these web services support FTP.

Any help is appreciated, i'm even prepared to pay for it!!!

 

[TWELVE]

I can help out here, had the same issue with the POST multipart, after some intense network tracing, comparing and reading a couple of RFCs i finally got it to work.

I will post example code here soon, once i've tested everything...


regards,

TWELVE

 

[a6000000]

Please can anyone post how to find the last Picture from camera to upload?
[EDIT] find: http://www.b4x.com/forum/code-sampl...e-using-internal-camera-your-application.html [/EDIT]

BUT: to send a binary file-stream (picture) , for send over HTTP-POST works
'// ( no more problems with PUT -the samples here I do not bring to work)
when I convert it to ascii - I convert it to longer stream , and ONLY USE PRINTABLE chars
(I was inspirated by JSON ) and tested til 2Megabyte Pictures on desktop , now I will try on my ppc .
in the web I reconvert the POST to binary with php.