Re: Boost SSL handshake(http_server_sync_ssl) : still reachable memory keeps increasing

From: Sandeep Bhardwaj (sandybharblore_at_[hidden])
Date: 2022-02-03 17:40:57

I am using OpenSSL 1.1.1d.

On Thu, 3 Feb 2022 at 22:43, Richard Hodges via Boost-users <
boost-users_at_[hidden]> wrote:

>
>
> On Thu, 3 Feb 2022 at 15:52, Sandeep Bhardwaj via Boost-users <
> boost-users_at_[hidden]> wrote:
>
>> Hi all,
>>
>>   I am using boost 1.76.0 version. I have slightly modified the example
>> program http_server_sync_ssl.cpp to just dump the payload it receives and i
>> have used certificates with ssl context. When I run the program with
>> valgrind, the "still reachable" memory keeps increasing with time. This is
>> one example:
>>
>
> Thanks for posting a complete program. I'll compile it up and have a look.
>
>
>
>>
>> ==17719== 38,880 bytes in 60 blocks are still reachable in loss record
>> 740 of 740
>> ==17719==    at 0x4C312EF: malloc (in
>> /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
>> ==17719==    by 0x567F438: CRYPTO_zalloc (in /usr/lib64/libcrypto.so.1.1)
>> ==17719==    by 0x52AA5CA: SSL_SESSION_new (in /usr/lib64/libssl.so.1.1)
>> ==17719==    by 0x52AAE22: ??? (in /usr/lib64/libssl.so.1.1)
>> ==17719==    by 0x52C8A06: ??? (in /usr/lib64/libssl.so.1.1)
>> ==17719==    by 0x52B7FF6: ??? (in /usr/lib64/libssl.so.1.1)
>> ==17719==    by 0x52A3F43: SSL_do_handshake (in /usr/lib64/libssl.so.1.1)
>> ==17719==    by 0x419630:
>> boost::asio::ssl::detail::engine::do_accept(void*, unsigned long)
>> (engine.ipp:316)
>> ==17719==    by 0x4193E3: boost::asio::ssl::detail::engine::perform(int
>> (boost::asio::ssl::detail::engine::*)(void*, unsigned long), void*,
>> unsigned long, boost::system::error_code&, unsigned long*) (engine.ipp:248)
>> ==17719==    by 0x418F6D:
>> boost::asio::ssl::detail::engine::handshake(boost::asio::ssl::stream_base::handshake_type,
>> boost::system::error_code&) (engine.ipp:148)
>> ==17719==    by 0x419778:
>> boost::asio::ssl::detail::handshake_op::operator()(boost::asio::ssl::detail::engine&,
>> boost::system::error_code&, unsigned long&) const (handshake_op.hpp:47)
>> ==17719==    by 0x424DB8: unsigned long
>> boost::asio::ssl::detail::io<boost::asio::basic_stream_socket<boost::asio::ip::tcp,
>> boost::asio::any_io_executor>,
>> boost::asio::ssl::detail::handshake_op>(boost::asio::basic_stream_socket<boost::asio::ip::tcp,
>> boost::asio::any_io_executor>&, boost::asio::ssl::detail::stream_core&,
>> boost::asio::ssl::detail::handshake_op const&, boost::system::error_code&)
>> (io.hpp:38)
>> ==17719==    by 0x421332:
>> boost::asio::ssl::stream<boost::asio::basic_stream_socket<boost::asio::ip::tcp,
>> boost::asio::any_io_executor>&>::handshake(boost::asio::ssl::stream_base::handshake_type,
>> boost::system::error_code&) (stream.hpp:389)
>> ==17719==    by 0x41D5FC:
>> boost::beast::ssl_stream<boost::asio::basic_stream_socket<boost::asio::ip::tcp,
>> boost::asio::any_io_executor>&>::handshake(boost::asio::ssl::stream_base::handshake_type,
>> boost::system::error_code&) (ssl_stream.hpp:344)
>> ==17719==    by 0x406971:
>> do_session(boost::asio::basic_stream_socket<boost::asio::ip::tcp,
>> boost::asio::any_io_executor>&, boost::asio::ssl::context&,
>> std::shared_ptr<std::__cxx11::basic_string<char, std::char_traits<char>,
>> std::allocator<char> > const> const&) (boost_server.cpp:219)
>>
>> I have attached the test program. Can anyone point out what needs to be
>> done here?
>>
>> Thanks & Regards,
>> Sandeep
>>
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>>
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