@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

3.374.0 (2023-07-20)

Bug Fixes

• packages: fix migrated package imports (#4990) (d800f78)

Features

• client-codecatalyst: This release adds support for updating and deleting spaces and projects in Amazon CodeCatalyst. It also adds support for creating, getting, and deleting source repositories in CodeCatalyst projects. (05a9f89)
• client-connectcases: This release adds the ability to assign a case to a queue or user. (f47d6f4)
• client-lex-models-v2: This release updates type for Channel field in SessionSpecification and UtteranceSpecification (1f77d0a)
• client-route53resolver: This release adds support for Route 53 On Outposts, a new feature that allows customers to run Route 53 Resolver and Resolver endpoints locally on their Outposts. (8acc64c)
• client-s3: Improve performance of S3 clients by simplifying and optimizing endpoint resolution. (72eb598)
• client-sagemaker-featurestore-runtime: Cross account support for SageMaker Feature Store (b0593ab)
• client-sagemaker: Cross account support for SageMaker Feature Store (e4918c1)
• client-securitylake: Adding support for Tags on Create and Resource Tagging API. (596636d)
• client-transcribe: Added API argument --toxicity-detection to startTranscriptionJob API, which allows users to view toxicity scores of submitted audio. (9e7552a)
• smithy-client: update client defaults provider (830cb06)