256 lines
7.2 KiB
C++
256 lines
7.2 KiB
C++
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/*
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Copyright (c) 2016, Arvid Norberg
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All rights reserved.
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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
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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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 OWNER 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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#include "libtorrent/config.hpp"
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#include "test.hpp"
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#include "libtorrent/receive_buffer.hpp"
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using namespace libtorrent;
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struct allocator : buffer_allocator_interface
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{
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void free_disk_buffer(char*) {}
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char* allocate_disk_buffer(char const*) { TORRENT_ASSERT(false); return NULL; }
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char* allocate_disk_buffer(bool&
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, boost::shared_ptr<disk_observer>
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, char const*) { TORRENT_ASSERT(false); return NULL; }
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char* async_allocate_disk_buffer(char const*
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, boost::function<void(char*)> const&) { TORRENT_ASSERT(false); return NULL; }
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void reclaim_block(block_cache_reference ref) {}
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};
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TORRENT_TEST(recv_buffer_init)
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{
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allocator a;
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receive_buffer b(a);
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b.cut(0, 10);
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TEST_EQUAL(b.packet_size(), 10);
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TEST_EQUAL(b.packet_bytes_remaining(), 10);
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TEST_EQUAL(b.packet_finished(), false);
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TEST_EQUAL(b.pos(), 0);
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TEST_EQUAL(b.capacity(), 0);
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}
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TORRENT_TEST(recv_buffer_pos_at_end_false)
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{
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allocator a;
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receive_buffer b(a);
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b.cut(0, 1000);
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// allocate some space to receive into
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boost::array<boost::asio::mutable_buffer, 2> vec;
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int num_bufs = b.reserve(vec, 1000);
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// since we don't have a disk buffer, there should only be a single
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// range/buffer
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TEST_EQUAL(num_bufs, 1);
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b.received(1000);
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b.advance_pos(999);
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TEST_EQUAL(b.pos_at_end(), false);
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}
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TORRENT_TEST(recv_buffer_pos_at_end_true)
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{
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allocator a;
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receive_buffer b(a);
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b.cut(0, 1000);
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b.reserve(1000);
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boost::array<boost::asio::mutable_buffer, 2> vec;
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int num_bufs = b.reserve(vec, 1000);
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TEST_EQUAL(num_bufs, 1);
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b.received(1000);
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b.advance_pos(1000);
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TEST_EQUAL(b.pos_at_end(), true);
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}
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TORRENT_TEST(recv_buffer_packet_finished)
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{
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allocator a;
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receive_buffer b(a);
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// packet_size = 10
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b.cut(0, 10);
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b.reserve(1000);
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boost::array<boost::asio::mutable_buffer, 2> vec;
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int num_bufs = b.reserve(vec, 1000);
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TEST_EQUAL(num_bufs, 1);
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b.received(1000);
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for (int i = 0; i < 10; ++i)
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{
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TEST_EQUAL(b.packet_finished(), false);
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b.advance_pos(1);
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}
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TEST_EQUAL(b.packet_finished(), true);
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}
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TORRENT_TEST(recv_buffer_disk_buffer)
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{
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char disk_buffer; // fake disk buffer pointer
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allocator a;
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receive_buffer b(a);
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b.reserve(1000);
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b.cut(0, 1000); // packet size = 1000
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boost::array<boost::asio::mutable_buffer, 2> vec;
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b.assign_disk_buffer(&disk_buffer, 137);
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int num_bufs = b.reserve(vec, 1000);
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TEST_EQUAL(num_bufs, 2);
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// regular buffer disk buffer
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// -----------------======
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//
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// |----------------------| 1000
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// |-----| 137
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// |----------------| 863
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TEST_EQUAL(boost::asio::buffer_size(vec[0]), 863);
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TEST_EQUAL(boost::asio::buffer_size(vec[1]), 137);
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}
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#if !defined(TORRENT_DISABLE_ENCRYPTION) && !defined(TORRENT_DISABLE_EXTENSIONS)
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TORRENT_TEST(recv_buffer_mutable_buffers_regular_and_disk)
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{
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char disk_buffer; // fake disk buffer pointer
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allocator a;
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receive_buffer b(a);
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b.reserve(1100);
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b.cut(0, 100); // packet size = 100
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b.received(1100);
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int packet_transferred = b.advance_pos(1100);
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// this is just the first packet
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TEST_EQUAL(packet_transferred, 100);
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// the next packet is 1000, and we're done with the first 100 bytes now
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b.cut(100, 1000); // packet size = 1000
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// and it has a disk buffer
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b.assign_disk_buffer(&disk_buffer, 137);
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std::vector<boost::asio::mutable_buffer> vec;
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packet_transferred = b.advance_pos(999);
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TEST_EQUAL(packet_transferred, 999);
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b.mutable_buffers(vec, 999);
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TEST_EQUAL(vec.size(), 2);
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// previous packet
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// |
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// v regular buffer disk buffer
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// - - - -----------------======
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// ^
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// |
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// m_recv_start
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// |----------------------| 1000 packet size
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// |-----| 137 disk buffer
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// |----------------| 863 regular buffer
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TEST_EQUAL(boost::asio::buffer_size(vec[0]), 863);
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TEST_EQUAL(boost::asio::buffer_size(vec[1]), 137 - 1);
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TEST_EQUAL(boost::asio::buffer_size(vec[0])
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+ boost::asio::buffer_size(vec[1]), 999);
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}
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TORRENT_TEST(recv_buffer_mutable_buffers_regular_only)
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{
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allocator a;
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receive_buffer b(a);
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b.reserve(1100);
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b.cut(0, 100); // packet size = 100
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b.received(1100);
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int packet_transferred = b.advance_pos(1100);
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// this is just the first packet
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TEST_EQUAL(packet_transferred, 100);
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// the next packet is 1000, and we're done with the first 100 bytes now
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b.cut(100, 1000); // packet size = 1000
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std::vector<boost::asio::mutable_buffer> vec;
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packet_transferred = b.advance_pos(999);
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TEST_EQUAL(packet_transferred, 999);
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b.mutable_buffers(vec, 999);
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TEST_EQUAL(vec.size(), 1);
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// previous packet
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// |
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// v regular buffer
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// - - - -----------------------
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// ^
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// |
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// m_recv_start
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// |----------------------| 1000 packet size
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// |---------------------| 999 regular buffer
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TEST_EQUAL(boost::asio::buffer_size(vec[0]), 999);
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}
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TORRENT_TEST(recv_buffer_mutable_buffers_disk)
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{
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char disk_buffer; // fake disk buffer pointer
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allocator a;
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receive_buffer b(a);
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b.reserve(1100);
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b.cut(0, 100); // packet size = 100
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b.received(1100);
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int packet_transferred = b.advance_pos(1100);
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// this is just the first packet
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TEST_EQUAL(packet_transferred, 100);
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// the next packet is 1000, and we're done with the first 100 bytes now
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b.cut(100, 1000); // packet size = 1000
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// and it has a disk buffer
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b.assign_disk_buffer(&disk_buffer, 1000);
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std::vector<boost::asio::mutable_buffer> vec;
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packet_transferred = b.advance_pos(999);
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TEST_EQUAL(packet_transferred, 999);
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b.mutable_buffers(vec, 999);
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TEST_EQUAL(vec.size(), 1);
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// previous packet
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// |
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// v disk buffer
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// - - - =======================
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// ^
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// |
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// m_recv_start
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// |----------------------| 1000 packet size
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// |----------------------| 999 disk buffer
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TEST_EQUAL(boost::asio::buffer_size(vec[0]), 999);
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TEST_EQUAL(boost::asio::buffer_cast<char*>(vec[0]), &disk_buffer);
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}
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#endif
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