android studio 2.2.3 http post to flask server

Let's say we want to write a To Do List application and we want to design a web service for it. The task of designing a web service or API that adheres to the REST guidelines then becomes an exercise in identifying the resources that will be exposed and how they will be affected by the different request methods. In general data is provided in the request body as a JSON blob, or sometimes as arguments in the query string portion of the URL. The REST design does not require a specific format for the data provided with the requests. (update order #123, from data provided with the request) (create a new order, from data provided with the request) The HTTP request methods are typically designed to affect a given resource in standard ways: HTTP Method The clients send requests to these URIs using the methods defined by the HTTP protocol, and possibly as a result of that the state of the affected resource changes. The REST architecture was originally designed to fit the HTTP protocol that the world wide web uses.Ĭentral to the concept of RESTful web services is the notion of resources.

This constraint is the only one that is optional. Code on demand: Servers can provide executable code or scripts for clients to execute in their context.Uniform Interface: The method of communication between a client and a server must be uniform.Layered System: Communication between a client and a server should be standardized in such a way that allows intermediaries to respond to requests instead of the end server, without the client having to do anything different.Cacheable: The server must indicate to the client if requests can be cached or not.In other words, the server cannot store information provided by the client in one request and use it in another request. Stateless: Each request from a client must contain all the information required by the server to carry out the request.Client-Server: There should be a separation between the server that offers a service, and the client that consumes it.The characteristics of a REST system are defined by six design rules:

In this article I'm going to show you how easy it is to create a RESTful web service using Python and the Flask microframework. In recent years REST (REpresentational State Transfer) has emerged as the standard architectural design for web services and web APIs.

Android studio 2.2.3 http post to flask server