Imported Upstream version 4.8.0.309

Former-commit-id: 5f9c6ae75f295e057a7d2971f3a6df4656fa8850

external/boringssl/ssl/test/packeted_bio.h

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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_PACKETED_BIO
+#define HEADER_PACKETED_BIO
+
+#include <openssl/base.h>
+#include <openssl/bio.h>
+
+#include "../../crypto/test/scoped_types.h"
+
+#if defined(OPENSSL_WINDOWS)
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <winsock2.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#else
+#include <sys/time.h>
+#endif
+
+
+// PacketedBioCreate creates a filter BIO which implements a reliable in-order
+// blocking datagram socket. It internally maintains a clock and honors
+// |BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT| based on it.
+//
+// During a |BIO_read|, the peer may signal the filter BIO to simulate a
+// timeout. If |advance_clock| is true, it automatically advances the clock and
+// continues reading, subject to the read deadline. Otherwise, it fails
+// immediately. The caller must then call |PacketedBioAdvanceClock| before
+// retrying |BIO_read|.
+ScopedBIO PacketedBioCreate(bool advance_clock);
+
+// PacketedBioGetClock returns the current time for |bio|.
+timeval PacketedBioGetClock(const BIO *bio);
+
+// PacketedBioAdvanceClock advances |bio|'s internal clock and returns true if
+// there is a pending timeout. Otherwise, it returns false.
+bool PacketedBioAdvanceClock(BIO *bio);
+
+
+#endif  // HEADER_PACKETED_BIO