package wasi:http

// The `wasi:http/proxy` world captures a widely-implementable intersection of
// hosts that includes HTTP forward and reverse proxies. Components targeting
// this world may concurrently stream in and out any number of incoming and
// outgoing HTTP requests.
world proxy {
  // HTTP proxies have access to time and randomness.
  import wasi:clocks/wall-clock
  import wasi:clocks/monotonic-clock
  import wasi:clocks/timezone
  import wasi:random/random

  // Proxies have standard output and error streams which are expected to
  // terminate in a developer-facing console provided by the host.
  import wasi:cli/stdout
  import wasi:cli/stderr

  // TODO: this is a temporary workaround until component tooling is able to
  // gracefully handle the absence of stdin. Hosts must return an eof stream
  // for this import, which is what wasi-libc + tooling will do automatically
  // when this import is properly removed.
  import wasi:cli/stdin

  // This is the default handler to use when user code simply wants to make an
  // HTTP request (e.g., via `fetch()`).
  import outgoing-handler

  // The host delivers incoming HTTP requests to a component by calling the
  // `handle` function of this exported interface. A host may arbitrarily reuse
  // or not reuse component instance when delivering incoming HTTP requests and
  // thus a component must be able to handle 0..N calls to `handle`.
  export incoming-handler
}