Can not upload large file by chunks

Question

I am trying to upload file by chunks. Here is my code&nbsp;
self.client.files.uploadSessionStart(input: chunkOfData).response { response, error in
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if let result = response {
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // the call succeeded
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; print(result)
&nbsp;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; while(end &lt; fileSize) {
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; end += self.CHUNK_SIZE;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; var chunkOfData = data.subdataWithRange(NSRange(location: end, length: self.CHUNK_SIZE)) // get range of bytes from file
&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; self.client.files.uploadSessionAppendV2(cursor: Files.UploadSessionCursor(sessionId: result.sessionId, offset: end), input: chunkOfData)
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }
&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // we're ready to finish the upload and commit the file
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; self.client.files.uploadSessionFinish(cursor: Files.UploadSessionCursor(sessionId: result.sessionId, offset: end),
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; commit: Files.CommitInfo(path: self.filePath),
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // no additional data to add at this point in this case
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; body:NSData()).response { response, error in
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if let result = response {
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; print(result)
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else {
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; print(error!)
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; } else {
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // the call failed
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; print(error!)
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }
&nbsp; &nbsp; &nbsp; &nbsp; }
Please help what am I doing wrong.
&nbsp;

Greg-DB · Answer

What specifically isn't working as expected? Are you getting an error?
There's a sample here that may be helpful:
https://stackoverflow.com/documentation/dropbox-api/409/uploading-a-file/1357/uploading-a-file-with-every-error-case-handled-using-the-swiftydropbox-library#t=201609081416309785993

uosuser u. · Answer

Hi Gregory,
I too am unable to upload a file in chunks. As far as I remember this used to work earlier for sure. I am using v2 API. The error occurs at the /finish stage. The exact error is:
Error transferring https://content.dropboxapi.com/2/files/upload_session/finish - server replied: Bad Request
With HTTP status Code: 400
&nbsp;The /start and /append_v2 sessions works and return Status Code: 200.
P.S: I'm using REST API v2.

Steve M. · Answer

uosuser, please create a new thread to get help with your issue, and please share the body of the&nbsp;400 response. (The body should be JSON that describes the&nbsp;error.)

Forum Discussion

Can not upload large file by chunks

3 Replies

About Dropbox API Support & Feedback

Related Content

chunk upload error if only one chunk c#

Uploading very large files (300GB)

Dropbox Backup: Untouched large file keeps restarting upload

Can I resume large file upload?

Large Upload too slow

Recent Discussions

/oauth2/authorize (code flow) redirects to http://www.dropbox.com/home instead of redirect_uri

Add id and .tag fields to DeletedMetadata in the API

Shared Link - Download in .NET

Dropbox API server root certificate changes for .Net

GetCurrentAccountAsync API Failing for some Team Members while using Impersonation