data flow

docs/README.md

@@ -1 +1,49 @@
 # webserv
+
+
+### Date Flow Overview
+
+```
+src/
+ ├─ main.cpp              # starts server
+ ├─ Server.cpp/.hpp       # listens & manages event loop
+ ├─ Connection.cpp/.hpp   # represents a single client
+ ├─ RequestParser.cpp/.hpp
+ ├─ Router.cpp/.hpp
+ ├─ Response.cpp/.hpp
+ ├─ CGIHandler.cpp/.hpp
+ ├─ Config.cpp/.hpp       # parses config file
+ └─ Utils.cpp/.hpp
+```
+
+```
+[Client TCP packet]
+       │
+       ▼
+┌───────────────┐
+│ Event Loop    │  (poll/select/epoll)
+└──────┬────────┘
+       │
+       ▼
+┌───────────────┐
+│ RequestParser │  (builds Request struct)
+└──────┬────────┘
+       │
+       ▼
+┌───────────────┐
+│ Router        │  (selects location, checks methods)
+└──────┬────────┘
+       │
+       ▼
+┌───────────────┐
+│ Handler       │  (static file, CGI, error)
+└──────┬────────┘
+       │
+       ▼
+┌───────────────┐
+│ ResponseBuilder│ (status line + headers + body)
+└──────┬────────┘
+       │
+       ▼
+[Send response back to client]
+```