108 lines
4.3 KiB
OCaml
108 lines
4.3 KiB
OCaml
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(*----------------------------------------------------------------------------
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Copyright (c) 2017 Inhabited Type LLC.
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Copyright (c) 2025 Robur Cooperative
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the author nor the names of his contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND ANY EXPRESS
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OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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----------------------------------------------------------------------------*)
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open Httpun_types
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type t =
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{ version : Version.t
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; status : Status.t
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; reason : string
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; headers : Headers.t }
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let create ?reason ?(version=Version.v1_1) ?(headers=Headers.empty) status =
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let reason =
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match reason with
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| Some reason -> reason
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| None ->
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begin match status with
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| #Status.standard as status -> Status.default_reason_phrase status
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| `Code _ -> "Non-standard status code"
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end
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in
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{ version; status; reason; headers }
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let persistent_connection ?proxy { version; headers; _ } =
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Message.persistent_connection ?proxy version headers
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let proxy_error = `Error `Bad_gateway
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let server_error = `Error `Internal_server_error
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module Body_length = struct
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type t = [
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| `Fixed of Int64.t
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| `Chunked
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| `Close_delimited
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| `Error of [ `Bad_gateway | `Internal_server_error ]
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]
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let pp_hum fmt (len : t) =
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match len with
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| `Fixed n -> Format.fprintf fmt "Fixed %Li" n
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| `Chunked -> Format.pp_print_string fmt "Chunked"
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| `Close_delimited -> Format.pp_print_string fmt "Close delimited"
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| `Error `Bad_gateway -> Format.pp_print_string fmt "Error: Bad gateway"
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| `Error `Internal_server_error ->
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Format.pp_print_string fmt "Error: Internal server error"
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;;
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end
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let body_length ?(proxy=false) ~request_method { status; headers; _ } : Body_length.t =
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match status, request_method with
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| _, `HEAD -> `Fixed 0L
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| (`No_content | `Not_modified), _ -> `Fixed 0L
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| s, _ when Status.is_informational s -> `Fixed 0L
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| s, `CONNECT when Status.is_successful s -> `Close_delimited
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| _, _ ->
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(* The last entry in transfer-encoding is the correct entry. We only handle
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chunked transfer-encodings. *)
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begin match List.rev (Headers.get_multi headers "transfer-encoding") with
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| value::_ when Headers.ci_equal value "chunked" -> `Chunked
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| _ ::_ -> `Close_delimited
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| [] ->
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begin match Message.unique_content_length_values headers with
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| [] -> `Close_delimited
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| [ len ] ->
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let len = Message.content_length_of_string len in
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if len >= 0L
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then `Fixed len
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else if proxy then proxy_error else server_error
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| _ ->
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if proxy then proxy_error else server_error
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end
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end
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let pp_hum fmt { version; status; reason; headers } =
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Format.fprintf fmt "((version \"%a\") (status %a) (reason %S) (headers %a))"
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Version.pp_hum version Status.pp_hum status reason Headers.pp_hum headers
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