Error closed when uploading file using /upload_session/append_v2

[ashlesha t.]

I am uploading file of 20.3 MB using C++ with Qt development environment. I am using session upload. I am uploading with chunk size of 4*1024*1024. 

In first upload/start("https://content.dropboxapi.com/2/files/upload_session/start") i am getting sessionId.

As in this above request i am passing 4MB bytearray from file so in next session upload i am passing "Dropbox-API-Arg: ("{\"cursor\": {\"session_id\": \""+m_strUploadId+"\","\"offset\": 4194304},\"close\": false}")

But, I am getting HTTP response atrribute as :409 

Error: 

"{\n \"error\": {\n \".tag\": \"closed\"\n },\n \"error_summary\": \"closed/..\"\n}\n"

Still more bytes need to send before that why session is getting closed?

I have entered the same as comment in discussion 

[Greg-DB]

The closed error from /files/upload_session/append_v2 should indicate that the upload session identified by the session_id is already closed.

Can you share the request/response for the call to /files/upload_session/start? (Just be sure to redact the access token and file content.)

[ashlesha t.]

Hi Gregory,

I was following document given https://www.dropbox.com/developers/documentation/http/documentation#files-upload_session-start .

As given in format I was setting "Dropbox-API-Arg", QByteArray("{\"close\":true}"). Reading your comment I again refer it and changed header and it worked.

Thank you your prompt help.

[ashlesha t.]

So now i am able to upload file using session.