Network Programming Practice
Following some documents & http://mobilelab.khu.ac.kr/wordpress/fssn/?vid=14

Information Exchange

• python echo-server.py
  
• python echo-client.py
  
• netstat -an - Viewing Socket State
  
  

realpython/python-sockets
Socket Programming w/C

• Get PID Get-Process -Id (Get-NetTCPConnection -LocalPort 포트#).OwningProcess
  -> KILL taskkill /F /PID PID#

Kernel -> Application

ZeroMQ
ZeroMQ Github
PyPI pyzmq

메시지 기반 요청 - 응답 구조

• Resources: Media-Types (Content-type, ..), URI
• Transactions: HTTP Methods, Status Code
• Methods: GET, HEAD, PUT, POST, TRACE, OPTIONS, DELETE
• Monolithic vs SOA vs Microservice
• SOAP(XML) vs REST(JSON)

• Connections: HTTP over TCP/IP and TLS/SSL, Proxy
• GET(R), PUT(U), POST(C), DELETE(D)

• gRPC HTTP/2, RPC기반 Protobuf 활용 통신
  learn.microsoft - gRPC 서비스와 HTTP API 비교
  Python Microservices With gRPC

• HTTP/2 Google SPDY - 구글의 비표준 네트워크 프로토콜
  

  • binary framing layer 도입
  • 지연시간 감소, 응답 다중화, 헤더필드 압축, 우선순위 지정, 서버 푸시 Go http2 package
    Certificates for localhost

UDP 위에서 동작하는 (+ TCP에 상응하는) QUIC[L4]
QUIC Working Group

1. HTTP/1.1 - ASCII over TCP
2. HTTP/2 - Binary multiplexed over TCP
3. HTTP/3 Binary over Multiplexed QUIC

Web P2P Real Time Communication

webrtc.org
mdn web docs > Web APIs > WebRTC API