package capnp-rpc-lwt

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Send and receive capnp messages over a byte-stream.

type t

A wrapper for a byte-stream (flow).

val send : t -> 'a Capnp.BytesMessage.Message.t -> (unit, [ `Closed | `Msg of string ]) Stdlib.result Lwt.t

send t msg transmits msg.

val recv : t -> ( Capnp.BytesMessage.Message.t, [> `Closed ]) Stdlib.result Lwt.t

recv t reads the next message from the remote peer. It returns Error `Closed if the connection to the peer is lost (this will also happen if the switch is turned off).

val of_flow : switch:Lwt_switch.t -> peer_id:Auth.Digest.t -> (module Mirage_flow_lwt.S with type flow = 'flow) -> 'flow -> t

of_flow ~switch ~peer_id (module F) flow sends and receives on flow. The caller should arrange for flow to be closed when the switch is turned off. If the flow is closed, the switch will be turned off. If the flow returns an error when the switch is off, the endpoint will return `Closed instead of the underlying error.

val peer_id : t -> Auth.Digest.t

peer_id t is the fingerprint of the peer's public key, or Auth.Digest.insecure TLS isn't being used.

val disconnect : t -> unit Lwt.t

disconnect t turns off t's switch.

val pp_error : [< `Closed | `Msg of string ] Fmt.t

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