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Building an HTTP Server

Jonathan Leeming

Building an HTTP Server

What is HTTP?

Hyper

Text

Transfer

Protocol

Clarification

Evolution of HTTP – MDN

What does HTTP look like?

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GET /greet HTTP/1.0
Host: example.com
Content-Type: application/json
Content-Length: 19

{ "name": "world" }

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GET /greet HTTP/1.0
Host: example.com
Content-Type: application/json
Content-Length: 19

{ "name": "world" }

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GET /greet HTTP/1.0
Host: example.com
Content-Type: application/json
Content-Length: 19

{ "name": "world" }

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GET /greet HTTP/1.0
Host: example.com
Content-Type: application/json
Content-Length: 19

{ "name": "world" }

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HTTP/1.0 200 OK
Server: my-http
Date: Mon, 11 Sep 2023 09:48:19 GMT
Content-Length: 13

Hello, world!

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HTTP/1.0 200 OK
Server: my-http
Date: Mon, 11 Sep 2023 09:48:19 GMT
Content-Length: 13

Hello, world!

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HTTP/1.0 200 OK
Server: my-http
Date: Mon, 11 Sep 2023 09:48:19 GMT
Content-Length: 13

Hello, world!

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HTTP/1.0 200 OK
Server: my-http
Date: Mon, 11 Sep 2023 09:48:19 GMT
Content-Length: 13

Hello, world!
  1. Download the template
  2. Echo server
  3. Handle control data
  4. Handle headers
  5. Handle body
  6. Send a static response
  7. Generate a response dynamically
  8. Return error responses
  9. Handle requests to different URLs