Hey! :wave: Using `MultiPartFormDataContent` to se...

# ktor

[Nacho Ruiz Martin]

Hey! 👋
Using MultiPartFormDataContent to set the boy of a request in the like:

setBody(
                MultiPartFormDataContent(
                    formData {
                        append("pub_id", pubId)
                        append("logo", logo, Headers.build {
                            append(HttpHeaders.ContentType, contentType)
                            append(HttpHeaders.ContentDisposition, "filename=\"$logoName\"")
                        })
                    }
                )
            )

on the server side (not Ktor) I’m getting the following:

{
  fields: {
    "nt-Disposition: form-data; name=pub_id\r\nContent-Length: ": "30"
  },
  files: {
    "nt-Disposition: form-data; name=log": {
      name: "nt-Disposition: form-data; name=log",
      filename: "Foto May 14 2024.jpg",
      contentType: "image/jpeg\r\nContent-Length: 6371508",
      size: 6371508,
      content: Uint8Array(6371508) [...]
    }
  }
}

As you can see, the Content-Disposition header is interpreted as part of the parameters and everything gets messy.

The server side is working as expected when sending the request with Postman, though.

Any idea what could be happening?

Thanks!

[Nacho Ruiz Martin]

According to Postman, the correct way to send this parameter with OkHTTP would be:

addFormDataPart("logo","Foto May 14 2024.jpg",
    RequestBody.create(MediaType.parse("application/octet-stream"),
    new File("/Users/ignacio.ruizmartin/Downloads/Foto May 14 2024.jpg")))

I’m surprised about the application/octet-stream part, shouldn’t that be the Mime Type of the file?

[Nacho Ruiz Martin]

By the way, the raw Form Data in KJS looks OK, but the parsed one is empty.

[Aleksei Tirman [JB]]

The raw form data looks well-formed to me. Can you try receiving the content using another server framework?

[Nacho Ruiz Martin]

Sure, I’ll try 🙂

[Nacho Ruiz Martin]

Yes, it works with a different server framework…

[Nacho Ruiz Martin]

That is weird, because it worked in Postman but, anyway, it ended great.

[Nacho Ruiz Martin]

Thanks!