@aws-sdk/protocol-http

What is @aws-sdk/protocol-http?

@aws-sdk/protocol-http is a package within the AWS SDK for JavaScript that provides HTTP request and response handling functionalities. It is designed to facilitate communication with AWS services by creating and managing HTTP requests and responses.

What are @aws-sdk/protocol-http's main functionalities?

Creating HTTP Requests

This feature allows you to create an HTTP request object with specified hostname, method, path, and headers. This is useful for setting up requests to AWS services or other endpoints.

const { HttpRequest } = require('@aws-sdk/protocol-http');

const request = new HttpRequest({
  hostname: 'example.com',
  method: 'GET',
  path: '/path',
  headers: {
    'Content-Type': 'application/json'
  }
});

console.log(request);

Handling HTTP Responses

This feature allows you to create an HTTP response object with specified status code, headers, and body. This is useful for handling responses from AWS services or other endpoints.

const { HttpResponse } = require('@aws-sdk/protocol-http');

const response = new HttpResponse({
  statusCode: 200,
  headers: {
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({ message: 'Success' })
});

console.log(response);

Middleware Integration

This feature demonstrates how to integrate middleware into the request/response lifecycle. Middleware can be used to add custom logic, such as logging or modifying requests and responses.

const { HttpRequest, HttpResponse } = require('@aws-sdk/protocol-http');
const { middlewareStack } = require('@aws-sdk/middleware-stack');

const stack = middlewareStack();

stack.add(
  (next, context) => async (args) => {
    console.log('Request:', args.request);
    const result = await next(args);
    console.log('Response:', result.response);
    return result;
  },
  {
    step: 'initialize',
    name: 'loggingMiddleware',
    priority: 'high'
  }
);

const request = new HttpRequest({
  hostname: 'example.com',
  method: 'GET',
  path: '/path'
});

stack.resolve(
  (handler) => handler({ request }),
  { request }
).then((result) => console.log(result));

Other packages similar to @aws-sdk/protocol-http

axios

Axios is a popular promise-based HTTP client for the browser and Node.js. It provides a simple API for making HTTP requests and handling responses. Compared to @aws-sdk/protocol-http, Axios is more general-purpose and widely used for various web development tasks, not specifically tailored for AWS services.

node-fetch

Node-fetch is a lightweight module that brings `window.fetch` to Node.js. It allows you to make HTTP requests in a similar way to the Fetch API in the browser. While node-fetch is simpler and more lightweight, @aws-sdk/protocol-http offers more advanced features and integrations specifically for AWS services.

request

Request is a simplified HTTP client for Node.js with a user-friendly API. It has been widely used for making HTTP requests but is now deprecated. Compared to @aws-sdk/protocol-http, Request was more general-purpose and not specifically designed for AWS services.

README

@aws-sdk/protocol-http

Changelog

3.290.0 (2023-03-13)

Features

• client-appintegrations: Adds FileConfiguration to Amazon AppIntegrations CreateDataIntegration supporting scheduled downloading of third party files into Amazon Connect from sources such as Microsoft SharePoint. (6780524)
• client-s3-control: Added support for cross-account Multi-Region Access Points. Added support for S3 Replication for S3 on Outposts. (0be873b)
• client-tnb: This release adds tagging support to the following Network Instance APIs : Instantiate, Update, Terminate. (dfdcf0e)
• client-wisdom: This release extends Wisdom CreateKnowledgeBase API to support SharePoint connector type by removing the @required trait for objectField (79c9f81)
• clients: update client endpoints as of 2023-03-13 (7110e0a)
• protocol-http: implement SRA HttpRequest (#4514) (d9d24b0)
• smithy-client: update client defaults provider (a092b53)