What is the process of utilizing an HTTP request to transfer an image to a server using Kotlin?

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The process of utilizing an HTTP request to transfer an image to a server using Kotlin involves the following steps:

1. Create an instance of the HttpRequest class.
2. Set the HTTP method to POST.
3. Set the URL of the server endpoint to which the image is to be uploaded.
4. Create an instance of HttpURLConnection and open a connection with the server.
5. Set the headers of the request, including the content type and length of the image.
6. Get the OutputStream of the connection and write the image data to it.
7. Close the OutputStream and send the request to the server.
8. Check the response code from the server to verify that the upload was successful.
9. If the upload was successful, retrieve the response data from the server.

Here's some sample code in Kotlin that illustrates these steps:

val url = URL("http://example.com/upload")
val connection = url.openConnection() as HttpURLConnection
connection.requestMethod = "POST"
connection.doOutput = true
connection.doInput = true
connection.useCaches = false

val boundary = "*****"
val contentType = "multipart/form-data;boundary=$boundary"
connection.setRequestProperty("Content-Type", contentType)

val outputStream = DataOutputStream(connection.outputStream)
outputStream.writeBytes("--$boundary\r\n")
outputStream.writeBytes("Content-Disposition: form-data; name=\"image\"; filename=\"image.png\"\r\n")
outputStream.writeBytes("Content-Type: image/png\r\n\r\n")

val fileInputStream = FileInputStream(file)
val buffer = ByteArray(1024)
var bytesRead: Int = fileInputStream.read(buffer)
while (bytesRead != -1) {
    outputStream.write(buffer, 0, bytesRead)
    bytesRead = fileInputStream.read(buffer)
}

outputStream.writeBytes("\r\n--$boundary--\r\n")
fileInputStream.close()
outputStream.flush()
outputStream.close()

val responseCode = connection.responseCode
if (responseCode == HttpURLConnection.HTTP_OK) {
    val inputStream = connection.inputStream
    val reader = BufferedReader(InputStreamReader(inputStream))
    val response = reader.readText()
    reader.close()
    inputStream.close()
}