Source file `httpun_async.ml`

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(*----------------------------------------------------------------------------
    Copyright (c) 2018 Inhabited Type LLC.
    Copyright (c) 2019 António Nuno Monteiro

    All rights reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions
    are met:

    1. Redistributions of source code must retain the above copyright
       notice, this list of conditions and the following disclaimer.

    2. Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.

    3. Neither the name of the author nor the names of his contributors
       may be used to endorse or promote products derived from this software
       without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND ANY EXPRESS
    OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
    ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
    OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
    ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.
  ----------------------------------------------------------------------------*)

open Async

module Server = struct
  type 'a socket = ([`Active], [< Socket.Address.t] as 'a) Socket.t

  let create_connection_handler
    ?(config=Httpun.Config.default)
    ~request_handler
    ~error_handler =
    fun client_addr socket ->
      let create_connection =
        Httpun.Server_connection.create
          ~config
          ~error_handler:(error_handler client_addr)
      in
      Gluten_async.Server.create_upgradable_connection_handler
        ~read_buffer_size:config.read_buffer_size
        ~protocol:(module Httpun.Server_connection)
        ~create_protocol:create_connection
        ~request_handler
        client_addr
        socket

  module SSL = struct
    let create_connection_handler
      ?(config=Httpun.Config.default)
      ~request_handler
      ~error_handler =
      fun client_addr socket ->
        let create_connection =
          Httpun.Server_connection.create
            ~config
            ~error_handler:(error_handler client_addr)
        in
        Gluten_async.Server.SSL.create_upgradable_connection_handler
          ~read_buffer_size:config.read_buffer_size
          ~protocol:(module Httpun.Server_connection)
          ~create_protocol:create_connection
          ~request_handler
          client_addr
          socket

    let create_connection_handler_with_default
      ~certfile
      ~keyfile
      ?config
      ~request_handler
      ~error_handler =
      let make_ssl_server =
        Gluten_async.Server.SSL.create_default
          ~alpn_protocols:["http/1.1"]
          ~certfile
          ~keyfile
      in
      fun client_addr socket ->
        make_ssl_server client_addr socket
        >>= fun ssl_server ->
          create_connection_handler
            ?config
            ~request_handler
            ~error_handler
            client_addr
            ssl_server
  end
end

module Client = struct
  module Client_runtime = Gluten_async.Client

  type 'a socket = 'a Client_runtime.socket

  type 'a runtime = 'a Client_runtime.t

  type 'a t =
    { connection: Httpun.Client_connection.t
    ; runtime: 'a runtime
    }

  let create_connection ?(config=Httpun.Config.default) socket =
    let connection = Httpun.Client_connection.create ~config () in
    Client_runtime.create
      ~read_buffer_size:config.read_buffer_size
      ~protocol:(module Httpun.Client_connection)
      connection
      socket
    >>| fun runtime ->
      { runtime; connection }

  let request t = Httpun.Client_connection.request t.connection

  let shutdown t = Client_runtime.shutdown t.runtime

  let is_closed t = Client_runtime.is_closed t.runtime

  let upgrade t protocol = Client_runtime.upgrade t.runtime protocol

  module SSL = struct
    module Client_runtime = Gluten_async.Client.SSL
    type 'a socket = 'a Client_runtime.socket

    type 'a runtime = 'a Client_runtime.t

    type 'a t =
      { connection: Httpun.Client_connection.t
      ; runtime: 'a runtime
      }

    let create_connection ?(config=Httpun.Config.default) socket =
      let connection = Httpun.Client_connection.create ~config () in
      Client_runtime.create
        ~read_buffer_size:config.read_buffer_size
        ~protocol:(module Httpun.Client_connection)
        connection
        socket
      >>| fun runtime ->
        { runtime; connection }

    let request t = Httpun.Client_connection.request t.connection

    let shutdown t = Client_runtime.shutdown t.runtime

    let is_closed t = Client_runtime.is_closed t.runtime

    let upgrade t protocol = Client_runtime.upgrade t.runtime protocol

    let create_connection_with_default ?config socket =
      Client_runtime.create_default
        ~alpn_protocols:["http/1.1"]
        socket
      >>= fun ssl_client ->
        create_connection ?config ssl_client
  end
end