ContributionsMost RecentMost LikesSolutionsRe: How to set content type for multipart/form-data part? Tanya Do you know if this problem got resolved? I have a multi-part request with two parts, a file and json metadata. The "file" part I can set the content-type through the attachment, but the "json" part seems to be defaulting to application/octet-stream which causes a 415. Re: How to set content type for multipart/form-data part? Did you get a solution to this? My request multipart/form-data does the same thing it puts the wrong content -type