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fix some overflow and division by zero issues

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This commit is contained in:
Arvid Norberg
2012-04-28 05:05:39 +00:00
parent 2aadba290b
commit 5583ed407a
2 changed files with 12 additions and 3 deletions
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10
src/peer_connection.cpp
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@@ -4702,7 +4702,13 @@ namespace libtorrent
// assume 20 kB/s
upload_capacity = (std::max)(20000, m_ses.m_peak_up_rate + 10000);
}
priority = (boost::uint64_t(m_est_reciprocation_rate) << 10) / upload_capacity;
int estimated_reciprocation_rate = m_est_reciprocation_rate;
// we cannot send faster than our upload rate anyway
if (estimated_reciprocation_rate < upload_capacity)
estimated_reciprocation_rate = upload_capacity;
priority = (boost::uint64_t(estimated_reciprocation_rate) << 14) / upload_capacity;
if (priority > 0xffff) priority = 0xffff;
}
else
{
@@ -4710,7 +4716,7 @@ namespace libtorrent
if (priority > 255) priority = 255;
priority += t->priority() << 8;
}
TORRENT_ASSERT(priority < 0xffff);
TORRENT_ASSERT(priority <= 0xffff);
// peers that we are not interested in are non-prioritized
TORRENT_ASSERT((m_channel_state[upload_channel] & peer_info::bw_limit) == 0);