Replay Attacks (Global)
High-quality technical overview of Replay Attacks in the context of blockchain security.
Status Codes: 1xx (Info), 2xx (Success), 3xx (Redirection), 4xx (Client Error), 5xx (Server Error). Evolution: HTTP/0.9 -> 1.0 -> 1.1 -> 2.0 -> 3.0.
graph LR
Center["Replay Attacks (Global)"]:::main
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🧒 5 yaşındaki gibi açıkla
Imagine you are at a restaurant. You are the 'Client' and the kitchen is the 'Server'. [HTTP](/tr/terms/http) is the waiter who takes your order (Request) and brings back the food (Response). If you order something they don't have, the waiter tells you 'Error 404'. If they bring the food, it's '200 OK'. Every time you click a website, a waiter (HTTP) is running back and forth to get the data for you.
🤓 Expert Deep Dive
Technically, HTTP is an application-layer protocol that typically runs over TCP/IP. It is a 'Request-Response' protocol where the client initiates a connection. Key methods include GET (fetch data), POST (send data), PUT (update), and DELETE. While HTTP/1.1 was text-based and suffered from 'Head-of-Line Blocking', HTTP/2 introduced 'Multiplexing' (sending multiple files over one connection) and binary framing. The latest version, HTTP/3, moves to the UDP-based QUIC protocol to further reduce latency and improve performance on unstable mobile networks.