Date: 2020nov7 OS: Android Language: Java Q. Android: On an old project I needed to upgrade the http client A. Android 19 has URLConnection and httpclient builtin. It must be <= Java 1.6 Can not use httpclient 4 since that conflicts with the built in httpclient Can not use httpclient 5 since uses Java 1.7 Can not use okhttp1.x since used Java 1.7 Solution was to make simple client with the SSLSocket class