1 /* Copyright (c) 2014, Google Inc. 2 * 3 * Permission to use, copy, modify, and/or distribute this software for any 4 * purpose with or without fee is hereby granted, provided that the above 5 * copyright notice and this permission notice appear in all copies. 6 * 7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ 14 15 #ifndef HEADER_PACKETED_BIO 16 #define HEADER_PACKETED_BIO 17 18 #include <openssl/base.h> 19 #include <openssl/bio.h> 20 21 #if defined(OPENSSL_WINDOWS) 22 OPENSSL_MSVC_PRAGMA(warning(push, 3)) 23 #include <winsock2.h> 24 OPENSSL_MSVC_PRAGMA(warning(pop)) 25 #else 26 #include <sys/time.h> 27 #endif 28 29 30 // PacketedBioCreate creates a filter BIO which implements a reliable in-order 31 // blocking datagram socket. It uses the value of |*clock| as the clock. 32 // 33 // During a |BIO_read|, the peer may signal the filter BIO to simulate a 34 // timeout. The operation will fail immediately. The caller must then call 35 // |PacketedBioAdvanceClock| before retrying |BIO_read|. 36 bssl::UniquePtr<BIO> PacketedBioCreate(timeval *clock); 37 38 // PacketedBioAdvanceClock advances |bio|'s clock and returns true if there is a 39 // pending timeout. Otherwise, it returns false. 40 bool PacketedBioAdvanceClock(BIO *bio); 41 42 43 #endif // HEADER_PACKETED_BIO 44
