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92ab7db6f8
As per permission from Google (Emilia). Reviewed-by: Richard Levitte <levitte@openssl.org>
45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
/*
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* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#ifndef HEADER_PACKETED_BIO
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#define HEADER_PACKETED_BIO
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#include <openssl/base.h>
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#include <openssl/bio.h>
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#if defined(OPENSSL_SYS_WINDOWS)
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OPENSSL_MSVC_PRAGMA(warning(push, 3))
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#include <winsock2.h>
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OPENSSL_MSVC_PRAGMA(warning(pop))
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#else
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#include <sys/time.h>
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#endif
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// PacketedBioCreate creates a filter BIO which implements a reliable in-order
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// blocking datagram socket. It internally maintains a clock and honors
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// |BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT| based on it.
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//
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// During a |BIO_read|, the peer may signal the filter BIO to simulate a
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// timeout. If |advance_clock| is true, it automatically advances the clock and
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// continues reading, subject to the read deadline. Otherwise, it fails
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// immediately. The caller must then call |PacketedBioAdvanceClock| before
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// retrying |BIO_read|.
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bssl::UniquePtr<BIO> PacketedBioCreate(bool advance_clock);
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// PacketedBioGetClock returns the current time for |bio|.
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timeval PacketedBioGetClock(const BIO *bio);
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// PacketedBioAdvanceClock advances |bio|'s internal clock and returns true if
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// there is a pending timeout. Otherwise, it returns false.
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bool PacketedBioAdvanceClock(BIO *bio);
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#endif // HEADER_PACKETED_BIO
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