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/* Copyright (c) 2014, Google Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#ifndef HEADER_ASYNC_BIO
#define HEADER_ASYNC_BIO
#include <openssl/bio.h>
#include "../../crypto/test/scoped_types.h"
// AsyncBioCreate creates a filter BIO for testing asynchronous state
// machines which consume a stream socket. Reads and writes will fail
// and return EAGAIN unless explicitly allowed. Each async BIO has a
// read quota and a write quota. Initially both are zero. As each is
// incremented, bytes are allowed to flow through the BIO.
ScopedBIO AsyncBioCreate();
// AsyncBioCreateDatagram creates a filter BIO for testing for
// asynchronous state machines which consume datagram sockets. The read
// and write quota count in packets rather than bytes.
ScopedBIO AsyncBioCreateDatagram();
// AsyncBioAllowRead increments |bio|'s read quota by |count|.
void AsyncBioAllowRead(BIO *bio, size_t count);
// AsyncBioAllowWrite increments |bio|'s write quota by |count|.
void AsyncBioAllowWrite(BIO *bio, size_t count);
// AsyncBioEnforceWriteQuota configures where |bio| enforces its write quota.
void AsyncBioEnforceWriteQuota(BIO *bio, bool enforce);
#endif // HEADER_ASYNC_BIO
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