Android Question Strange Multipart request failure

jazzzzzzz · Dec 18, 2016

I have to upload a image file to a server,I have used okhttp multipart upload request to send the request,I have tested the upload in lan using php server and it works perfectly in lan.

But when the php code is hosted in web it does not work.It gives this error in the app

B4X:

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>501 Method Not Implemented</title>
</head><body>
<h1>Method Not Implemented</h1>
<p>GET to /photo_admin/mobile_api.php not supported.<br />
</p>
<p>Additionally, a 501 Method Not Implemented
error was encountered while trying to use an ErrorDocument to handle the request.</p>
</body></html>
Method Not Implemented

So I thought there is some server configuration issue and tested the same request using postman in my laptop and the file was uploaded perfectly..I Am totally confused why this is not working in App in web (but works on lan)

B4X:

<p>GET to /photo_admin/mobile_api.php not supported.<br />

But this line here shows its a get request..but multipartpost is a post request Why this happens...!

Any idea or suggestions>?

Erel · Dec 18, 2016

jazzzzzzz said:
I have to upload a image file to a server,I have used okhttp multipart upload request

Are you using OkHttpUtils2?

jazzzzzzz · Dec 18, 2016

Yes I am

Erel · Dec 18, 2016

HttpJob.PostMultipart creates a POST request.

Seems like a server misconfiguration. Maybe the redirect table converts the POST request to a GET request.

jazzzzzzz · Dec 18, 2016

Erel said:
HttpJob.PostMultipart creates a POST request.

Seems like a server misconfiguration. Maybe the redirect table converts the POST request to a GET request.

But its working good in postman,If its a server configuration issue then post man should also fail right?

DonManfred · Dec 18, 2016

Can you post the code which sends the request?

Erel · Dec 18, 2016

Yes. However PostMultipart creates a POST request. It will never create a GET request.

You can use this php script to log the request:

B4X:

<?php
print "POST variables:\r\n";
var_dump($_POST);
print "\r\nGET variables:\r\n";
var_dump($_GET);
?>

DonManfred · Dec 18, 2016

Erel said:
es. However PostMultipart creates a POST request. It will never create a GET request.

I´m sure you are right.

BUT (i may be wrong)

Assuming the following code

B4X:

    Dim files As List
    files.Initialize
   
    Dim fd As MultipartFileData
    fd.Initialize
    fd.KeyName = "pdf"
    fd.Dir = File.DirAssets
    fd.FileName = "schadensanzeige.pdf"
    fd.ContentType = "application/pdf"
    files.Add(fd)

    Dim job As HttpJob
    job.Initialize("Upload",Me)
    job.PostMultipart("http://basic4android.de/?varA=16",CreateMap("action":"panne","knr":7,files)

This IS is Post-Request.

But the value varA is given via GET and "action" and "knr" is given inside the post-payload as POST values.

Or i am wrong with this?

jazzzzzzz · Dec 18, 2016

DonManfred said:
Can you post the code which sends the request?

B4X:

Log("upload_pic")
    Dim j As HttpJob
    j.Initialize("upload_pic", Me)
    Dim fd As MultipartFileData
    fd.Initialize
    fd.KeyName = "upload_photo"
    fd.Dir = File.DirDefaultExternal
    fd.FileName = "1.jpg"
    fd.ContentType = "image/png"

    j.PostMultipart(Main.parentURL, CreateMap("action":"upload","access_token":Main.accessToken _
    ,"contest_id":Main.currentContestId,"user_id": Main.userID,"caption":desc.Text), Array(fd))

DonManfred · Dec 18, 2016

and Main.parentURL contains what?

jazzzzzzz · Dec 18, 2016

http://medbaltra.com/photo_admin/mobile_api.php

DonManfred · Dec 18, 2016

Ok, than my guess in #8 does not apply here.

jazzzzzzz · Dec 18, 2016

Am totally stuck now.!

Erel · Dec 18, 2016

You should upload the PHP script I posted to your server and see what your server receives.

jazzzzzzz · Dec 18, 2016

Please check the text files I have uploaded.

One is data from emulator (This one does not works),And the other one is from postman(This one works).
Both data fetched by wireshark,I think the data looks same ..

DonManfred · Dec 18, 2016

You are not running this with a real device?

jazzzzzzz · Dec 18, 2016

DonManfred said:
You are not running this with a real device?

I just used emulator to take data from Wireshark.Device and emultor both are not working

Erel · Dec 18, 2016

DonManfred said:
But the value varA is given via GET and "action" and "knr" is given inside the post-payload as POST values.

Or i am wrong with this?

You are correct that the parameters are GET parameters. However the request itself is a POST request.

@jazzzzzzz based on the wireshark logs we can see that it is actually a POST request. The server error message is wrong.

Where did the cookie value come from?

jazzzzzzz · Dec 18, 2016

Where did the cookie value come from?

I dont know..!

jazzzzzzz · Dec 19, 2016

I did lot of testing today..

I think its some issue related to our upload because I have test it with native iOS test app and uploading is working good.
So browser and native iOS upload is working good.I haven't test native java android

Please check this sample B4A project for testing upload http://arunneeraj.com/uploads/upload_test_b4a.zip

Given below is the server code.

B4X:

<?php

$imgName=$_FILES["file"]["name"];
move_uploaded_file($_FILES["file"]["tmp_name"],"uploads/" . $_FILES["file"]["name"]);
   
echo "success";

?>

To check whether the file is uploaded you can go to http://arunneeraj.com/uploads/
The link lists all the file that are uploaded.

Once again this is the error am getting

B4X:

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>501 Method Not Implemented</title>
</head><body>
<h1>Method Not Implemented</h1>
<p>GET to /upload_demo.php not supported.<br />
</p>
<p>Additionally, a 501 Method Not Implemented
error was encountered while trying to use an ErrorDocument to handle the request.</p>
</body></html>

Can any one check on these???

Android Question Strange Multipart request failure

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