i am trying to read a csv file from a multipart re...

# ktor

[bitkid]

i am trying to read a csv file from a multipart request and somehow it behaves weird. when i do

for (line in part.streamProvider().reader().readLines())

it fails with "Underlying input stream returned zero bytes" but when i do

for (line in ByteArrayInputStream(part.streamProvider().readAllBytes()).reader().readLines())

it works as expected. the weird part is when i run "unix2dos file" before uploading it, it works also with the first bit of code. do i need some content type headers or something like this? reading the file locally also works with the first part, so something along the lines

for(line in File("bla").reader().readLines())

[bitkid]

that's the uploading code

[bitkid]

protected fun TestApplicationEngine.uploadDataForMatrix(file: File, path: String, method: HttpMethod = HttpMethod.Put): TestApplicationResponse {
        return handleRequest(method, path) {
            val boundary = "***bbb***"
            addHeader(HttpHeaders.ContentType, ContentType.MultiPart.FormData.withParameter("boundary", boundary).toString())
            setBody(boundary, listOf(
                    PartData.FileItem({ file.inputStream().asInput() }, {}, headersOf(
                            HttpHeaders.ContentDisposition,
                            ContentDisposition.File
                                    .withParameter(ContentDisposition.Parameters.Name, "file")
                                    .withParameter(ContentDisposition.Parameters.FileName, "file.txt")
                                    .withParameter(ContentDisposition.Parameters.Size, "${file.length()}")
                                    .toString()
                    ))
            ))
        }.response
    }

[bitkid]

when i convert it back with dos2unix it fails again

[bitkid]

what is weird that i can read file locally without ktor without problems. seems like the upload is messing with the file somehow

[bitkid]

part.streamProvider().readAllBytes() works .. part.streamProvider().reader().readText() fails