Programming Cloud Services for Android Handheld Systems Week 2

  1. Building Cloud Services on HTTP use http request(query parameter) to send command to
    1. PUT - store new video
    2. GET - query/fetch video http response(response code - status, body - data(vido, just text), content type) put video(name, content type in header) in mutil-part body

  2. Protocol Layering & HTTP Design Methodologies web services on top of http rest api

  3. REST get video/1/deration

  4. HTTP Polling start with client client decide web socket

  5. Push Messaging GCM service

  6. Java Servlet web.xml to routing request

  7. HttpServlet

  8. Request Routing and Web.xml

  9. Video Servlet Walkthrough lots of Servlet doGet(){ resp.setHeader(); resp.setContextType(“text/plain”); } doPost(){ //get values from the client String name = req.getParameter(“name”); //validate duration //set content type //validate parameters //tell client bad request //tell client successful processed }

    loop each video video are stored in the java object anyone can pertend to be your client and send you data, you need to check the data

  10. Securely Handling Client Data & Avoid Injectiong Attacks

    client send some data, because of that data can be a command, we execute that command.

    Don’t trust client data.