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Forum Discussion
Re: Error in call to API function "files/upload": HTTP header "Dropbox-API-Arg":
good you are available
Said so, pls let me know How to fix it.
to recap:
a) my ap is written in swift, NO other components (neither official dropbox library, too big and too messy)
b) it did ...
Greg-DB
Dropbox Staff
Dropbox StaffI'll be happy to help with any issues you're having with the Dropbox API, but I'll need some more information. Please reply with:
- the steps to reproduce the issue, including relevant code snippet(s), but don't include any access or refresh token(s)
- the full text of any error or unexpected output
this is my Swift code:
case .Upload:
var optionsStr = "{\"path\": \"PATH_PLACEHOLDER\",\"mode\": \"add\",\"autorename\": AUTORENAME_PLACEHOLDER, \"mute\": false,\"strict_conflict\": false}"
optionsStr = optionsStr.replacingOccurrences(of: "PATH_PLACEHOLDER", with: remotePath!)
let autoRename = autoRenameOnServer ? "true" : "false"
optionsStr = optionsStr.replacingOccurrences(of: "AUTORENAME_PLACEHOLDER", with: autoRename)
#if DEBUG
print("header: ", optionsStr, "\n")
#endif
request.setValue(optionsStr, forHTTPHeaderField: "Dropbox-API-Arg")
request.setValue("application/octet-stream", forHTTPHeaderField: "Content-Type")
And I send it AS other cases (for example LIST)
the above code is for uploading.
As said, it worked a couple of weeks ago and for more than 2 years.
SO the unique reason is Siem Apis is changed OR other inner things, but NO decent details.,
to be cleat: after this code we issued the USUAL, beloved, apple-endorsed code:
let session = URLSession.shared
let task = session.dataTask(with: request as URLRequest, completionHandler: {data, response, error -> Void in
......
would be useful alo if Your programmers can send back some simular code (shell scripts..) I can run via MAC/Unix/Linux bash to get the same result uploading a file.
- Greg-DB
For reference, the documentation for /2/files/upload includes a basic example of how you might call curl in a shell to perform an upload. The API Explorer can also be useful for prototyping and testing calls. (Click "Show Code" to see an example of what the code would look like.)
Anyway, the /2/files/upload endpoint is a "Content-upload" style endpoint, so it takes the parameters as JSON in the "Dropbox-API-Arg" header. In your code I see you're building that JSON by replacing portions of a pre-existing string. I recommend using actual JSON writing functionality (for instance, provided by your platform or a library) to build that instead, as that should be less error prone.
For instance, it's possible I see you're inputting the remotePath value, and it's possible that value has changed to something that is causing your code to produce invalid JSON, such as to include some character that needs to be escaped.
When putting these values in the header, make sure you're encoding them properly. We have a documentation page here that explains what needs to be escaped, including an example written on Swift at the bottom. Check that out and make sure you're building and encoding your JSON string properly as shown there.
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