Library
Module
Module type
Parameter
Class
Class type
Resolve URIs to endpoints using the Lwt library
module IO : Conduit.IO with type 'a t = 'a Lwt.t
IO module compatible with Conduit.IO
that uses Lwt
module type S =
Resolver.S with type svc = Resolver.service and type 'a io = 'a Lwt.t
Module type that specialises Conduit.RESOLVER
to use Lwt threads
include S
type 'a io = 'a Lwt.t
Abstract type of the cooperative threading library used, normally defined via the IO
module type
include Sexplib0.Sexpable.S with type t := t
val t_of_sexp : Sexplib0.Sexp.t -> t
val sexp_of_t : t -> Sexplib0.Sexp.t
type svc = Resolver.service
Abstract type for a service entry, which maps a URI scheme into a protocol handler and TCP port
val sexp_of_svc : svc -> Sexplib0.Sexp.t
val svc_of_sexp : Sexplib0.Sexp.t -> svc
type rewrite_fn = svc -> Uri.t -> Conduit.endp io
A rewrite function resolves a service and a URI into a concrete endpoint.
val (++) : service_fn -> service_fn -> service_fn
f ++ g
is the composition of the service functions f
and g
.
val init :
?service:service_fn ->
?rewrites:(string * rewrite_fn) list ->
unit ->
t
init ?service ?rewrites
will initialize the resolver and return a state handler. The service argument should contain the system-specific resolution mechanism for URI schemas.
The rewrites
argument can optionally override a subset of the URI domain name with the given rewrite_fn
to permit custom resolution rules. For example, a rewrite rule for ".xen" would let the rewrite function resolve hostnames such as "foo.xen" into a shared memory channel for the "foo" virtual machine.
val add_rewrite : host:string -> f:rewrite_fn -> t -> unit
add_rewrite ~host f t
will add to the t
resolver the f
rewrite rule for all the domain names that shortest-prefix match host
val set_service : f:service_fn -> t -> unit
val service : t -> service_fn
service t
is the function which is called when trying to resolve a hostname with t
.
val resolve_uri :
?rewrites:(string * rewrite_fn) list ->
uri:Uri.t ->
t ->
Conduit.endp io
resolve_uri ?rewrites ~uri t
will use t
to resolve the uri
into a concrete endpoint. Any rewrites
that are passed in will be overlayed on the existing rules within the t
resolver, but not otherwise modify it.