66 lines
3 KiB
OCaml
66 lines
3 KiB
OCaml
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(*----------------------------------------------------------------------------
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* Copyright (c) 2019 António Nuno Monteiro
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*
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* All rights reserved.
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*
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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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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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN 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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(* From RFC7540§5.1.1:
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* Streams are identified with an unsigned 31-bit integer. *)
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type t = int32
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let ( === ) = Int32.equal
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let[@inline] ( <= ) s1 s2 = Int32.compare s1 s2 <= 0
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let[@inline] ( > ) s1 s2 = Int32.compare s1 s2 > 0
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let[@inline] ( >= ) s1 s2 = Int32.compare s1 s2 >= 0
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(* From RFC7540§5.1.1:
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* A stream identifier of zero (0x0) is used for connection control messages;
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* the stream identifier of zero cannot be used to establish a new stream. *)
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let connection = Int32.zero
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(* From RFC7540§5.1.1:
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* A stream identifier of zero (0x0) is used for connection control messages;
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* the stream identifier of zero cannot be used to establish a new stream. *)
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let[@inline] is_connection id = Int32.equal id connection
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(* From RFC7540§5.1.1:
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* Streams initiated by a client MUST use odd-numbered stream
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* identifiers [...]. *)
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let[@inline] is_request id = Int32.rem id 2l === 1l
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(* From RFC7540§5.1.1:
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* Streams initiated by [...] the server MUST use even-numbered stream
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* identifiers. A stream identifier of zero (0x0) is used for connection
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* control messages [...]. *)
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let[@inline] is_pushed = function 0l -> false | n -> Int32.rem n 2l === 0l
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(* From RFC7540§5.1.1:
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* Streams are identified with an unsigned 31-bit integer. *)
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let max_stream_id = Int32.max_int
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