Chapter 10. Client-server communications using Node.js, TypeScript, and WebSockets
This chapter covers
- Why a blockchain may need a server
- The longest chain rule
- How to create a Node.js WebSocket server in TypeScript
- Practical use of TypeScript interfaces, abstract classes, access qualifiers, enums, and generics
In the previous chapter, you learned that each block miner can take a number of pending transactions, create a valid block that includes the proof of work, and add the new block to the blockchain. This workflow is easy to follow when there is only one miner creating the proof of work. Realistically, there could be thousands of miners around the world trying to find the valid hash for a block with the same transactions, which may cause ...
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