GetClientInfo

// See also The Quintessential Servlet

// This method is called by the servlet container to process a GET request.
public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
    // Get client's IP address
    String addr = req.getRemoteAddr(); // 123.123.123.123

    // Get client's hostname
    String host = req.getRemoteHost(); // hostname.com
}

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