InputStreamRequestBody for retrofit

InputStreamRequestBody

import okhttp3.MediaType
import okhttp3.RequestBody
import okio.BufferedSink
import okio.source
import java.io.IOException
import java.io.InputStream

class InputStreamRequestBody(private val contentType: MediaType, private val inputStream: InputStream) : RequestBody() {
    override fun contentType(): MediaType {
        return contentType
    }

    @Throws(IOException::class)
    override fun contentLength(): Long {
        return -1
    }

    @Throws(IOException::class)
    override fun writeTo(sink: BufferedSink) {
        sink.writeAll(inputStream.source())
    }
}

Usage val file = InputStreamRequestBody("multipart/form-data".toMediaType(),inputStream)