November 2019
Beginner to intermediate
408 pages
9h 29m
Korean
Content preview from 밑바닥부터 시작하는 비트코인
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밑바닥부터 시작하는 비트코인
260
연습문제
10.3
NetworkEnvelope
클래스의
serialize
메서드를 작성하시오.
10.2
페이로드 파싱
각 커맨드마다 서로 다른 페이로드를 구성합니다. 따라서 페이로드 내용을 구성에 따라 파싱할
수 있습니다. [그림
10
-
2
]은
version
커맨드의 페이로드를 파싱한 예입니다.
그림
10-2
version
커맨드의 페이로드 파싱
위 필드에는 두 노드가 본격적으로 통신하는 데 필요한 정보를 담고 있습니다.
첫 번째 필드 (
Protocol
version
)는 네트워크 프로토콜 버전 정보를 갖고 있습니다. 프로토
콜에 따라서 통신 가능한 메시지가 제한됩니다. 서비스 필드(
Network
services
)는 연결된
노드 사이에 사용 가능한 서비스 정보를 담고 있습니다.
8
바이트의 유닉스 타임스탬프 필드
(
timestamp
)는 리틀엔디언 정수로 읽습니다 (참고로 블록 헤더에 있는 타임스탬프는
4
바이
트입니다 ).
10
장
네트워킹
261
다음 필드 (
Network
address
)는
IP
주소로
IPv6
,
IPv4
또는
OnionCat
(
TOR
의
.
onion ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.