The body of your POST request is not well-formed on iOS

[skyliwq]

Content-Disposition: form-data;Name="{key}"\r\n\n{value}\r\n--{boundary} sends without problems in this format, such as rn-fetch-blob. {name: 'policy', data: OSS.policy}....

my code

BlobCourier.uploadParts({
   method: 'POST',
   returnResponse: true,
   filename: imageName,
   parts: {
     policy: {
       payload: OSS.policy,
       type: 'string',
     },
     file: {
       payload: {
         absoluteFilePath: absoluteFilePath,
         mimeType: 'application/' + imageType,
       },
       type: 'file',
     },
   },
   url: OSS.host,
})

[edeckers]

Hey @skyliwq thank you for reaching out once more, I'll have a look at it! And I'll keep you posted on the progress.

[skyliwq]

Android normal iOS error

[edeckers]

Alright, that's helpful. And that's what I was afraid of: on iOS I build each part of the POST-body manually as that seems to be the way it is done on iOS. I'll check it out.