Build Your Own Web Server From Scratch in Node.JS: Learn network programming, HTTP, and WebSocket by coding a Web Server – James Smith

Contents
01.Introduction 1
1.1 Why Code a Web Server? ……1
1.2 Build Your Own X From Scratch …..1
1.3 The Book ……..2
02.HTTP Overview 4
2.1 Overview ……..4
2.2 HTTP by Example …….4
2.3 The Evolution of HTTP ……5
2.4 Command Line Tools …….6
03.Code A TCP Server 8
3.1 TCP Quick Review …….8
3.2 Socket Primitives …….10
3.3 Socket API in Node.js …….11
3.4 Discussion: Half-Open Connections …..15
3.5 Discussion: The Event Loop & Concurrency ….15
3.6 Discussion: Asynchronous vs.Synchronous ….16
3.7 Discussion: Promise-Based IO ……18
04.Promises and Events 19
4.1 Introduction to ‘async‘ and ‘await‘ …..19
4.2 Understanding ‘async‘ and ‘await‘ …..20
4.3 From Events To Promises ……21
4.3 Using ‘async‘ and ‘await‘ ……26
4.5 Discussion: Backpressure ……27
4.6 Discussion: Events and Ordered Execution ….29
4.7 Conclusion: Promise vs.Callback …..30
05.A Simple Network Protocol 31
5.1 Message Echo Server …….31
5.2 Dynamic Buffers …….31
5.3 Implementing a Message Protocol …..33
5.4 Discussion: Pipelined Requests ……35
5.5 Discussion: Smarter Buffers ……37
5.6 Conclusion: Network Programming Basics ….38
06.HTTP Semantics and Syntax 39
6.1 High-Level Structures ……39
6.2 Content-Length …….39
6.3 Chunked Transfer Encoding ……40
6.4 Ambiguities in HTTP …….41
6.5 HTTP Message Format ……42
6.6 Common Header Fields ……43
6.7 HTTP Methods …….44
6.8 Discussion: Text vs.Binary ……46
6.9 Discussion: Delimiters ……47
07.Code A Basic HTTP Server 49
7.1 Start Coding ……..49
7.2 Testing ……..58
7.3 Discussion: Nagle's Algorithm ……59
7.4 Discussion: Buffered Writer ……60
08.Dynamic Content and Streaming 62
8.1 Chunked Transfer Encoding ……62
8.2 Generating Chunked Responses …..63
8.3 JS Generators …….64
8.4 Reading Chunked Requests ……66
8.5 Discussion: Debugging with Packet Capture Tools …69
8.6 Discussion: WebSocket ……71
09.File IO & Resource Management 73
9.1 File IO in Node.JS …….73
9.2 Serving Disk Files …….74
9.3 Discussion: Manual Resource Management ….78
9.4 Discussion: Reusing Buffers ……81
10.Range Requests 84
10.1 How Range Requests Work ……84
10.2 Implementing Range Requests …..88
11.HTTP Caching 91
11.1 Cache Validator …….91
11.2 Discussion: Server-Side Cache Control …..93
12.Compression & the Stream API 97
12.1 How HTTP Compression Works …..97
12.2 Data Processing with Pipes ……99
12.3 Exploring the Stream API in Node.JS …..100
12.4 Implementing HTTP Compression …..101
12.5 Discussion: Refactoring to Stream …..106
12.6 Discussion: High Water Mark and Backpressure ….107
13.WebSocket & Concurrency 109
13.1 Establishing WebSockets ……109
13.2 WebSocket Protocol …….111
13.3 Introduction to Concurrent Programming ….113
13.4 Coding a Blocking Queue ……116
13.5 WebSocket Server …….119
13.6 Discussion: WebSocket in the Browser …..125
13.7 Conclusion: What We Have Learned …..126