Module cf 

Access Cloudflare Worker bindings and request context from inside #[server] functions.

Binding shortcuts

• cf::d1() — D1 database (combines env + binding lookup + error conversion)
• cf::kv() — Workers KV namespace
• cf::r2() — R2 bucket
• cf::durable_object() — Durable Object namespace
• [cf::queue()] — Queue producer (requires queue feature)
• cf::secret() — encrypted secret (set via wrangler secret put)
• cf::var() — plaintext environment variable (set in [vars])
• cf::ai() — Workers AI inference
• cf::service() — Service binding (call other Workers)

Raw access

• cf::env() — the full Worker Env (for bindings without a shorthand)
• cf::req() — the raw worker::Request (headers, IP)

Incoming cookies

• cf::cookie() — read a named cookie from the request
• cf::cookies() — read all cookies from the request

Outgoing cookies

• cf::set_cookie() — queue an HttpOnly auth cookie (secure defaults)
• cf::set_cookie_with() — queue a cookie with custom options
• cf::clear_cookie() — queue a cookie-clearing header (logout)

Outgoing cookies are queued in thread-local storage and applied to the response by handle — no &mut Response needed inside server functions.

Sessions

• cf::session() — load the session (async first call, cached after); returns Session handle

Requires .session(SessionConfig::kv("SESSIONS")) on the Handler.

WebSocket helpers

• cf::websocket_upgrade() — create a WebSocketPair and 101 response in one call
• cf::websocket_pair() — create a raw WebSocketPair for custom handling

Structs

CookieBuilder

Builder for cookies with custom options.

Session

Zero-sized session handle — all operations access thread-local state.

Enums

SameSite

SameSite attribute for cookies.

Functions

ai

Access a Workers AI binding by name.

clear_cookie

Queue a cookie-clearing header on the outgoing response (Max-Age=0).

cookie

Read a named cookie from the incoming request’s Cookie header.

cookies

Read all cookies from the incoming request’s Cookie header.

d1

Access a D1 database binding by name.

durable_object

Access a Durable Object namespace binding by name.

env

Access the Cloudflare Worker Env from inside any #[server] function.

kv

Access a Workers KV namespace binding by name.

r2

Access an R2 bucket binding by name.

req

Access the raw Cloudflare Worker worker::Request for the current request.

secret

Access a secret environment variable by name.

service

Access a Service binding by name.

session

Load the session for the current request.

set_cookie

Queue an HttpOnly auth cookie on the outgoing response.

set_cookie_with

Start building a cookie with custom options.

var

Access a plaintext environment variable by name.

websocket_pair

Create a raw [WebSocketPair] without building the upgrade response.

websocket_upgrade

Create a [WebSocketPair] and build the 101 Upgrade response in one call.