Scala: wget/curl example

The following example shows how to implement the bones of a wget or curl style application in Scala, including checking for HTTPS and obtaining the certificate chain.

val testUrl = "https://" + domain
val url = new URL(testUrl)
val conn: HttpsURLConnectionImpl = url.openConnection() match {
  case httpsConn: HttpsURLConnectionImpl => httpsConn
  case conn => {
    println(conn.getClass)
    ???
  }
}

// Set any additional arguments here -
// E.g. timeout, user agent, "GET" vs "POST"
// prior to connect
conn.connect()

val certs = conn.getServerCertificateChain

println(conn.getResponseCode)
println(conn.getResponseMessage)
println(conn.getContentLength)
println(conn.getContent)
println(conn.getContentType)