1.The client don't keep alive, and start a new connection each time. 2.I get openssl-1.1.0j from https://www.openssl.org/source/openssl-1.1.0j.tar.gz 3.we can improve some performance ? Or let Nginx turn HTTP/S to HTTP, and asio just handle HTTP ? Thank you. Vinnie Falco 于2019年1月31日周四 上午12:58写道：

On Tue, Jan 29, 2019 at 7:27 PM lx via Boost wrote:

...

https significantly reduce performance.

Well, yes, the connection is encrypted by a block cipher - what did you expect? Are you disconnecting and reconnecting for every request or are you keeping the connection alive? The SSL opening handshake is very expensive. Are you using a debug or optimized OpenSSL library?

It is normal that SSL connections are going to be significantly slower than plain connections. On a related note, Google wants the world to switch to HTTP/S and disallow HTTP.

Regards

You are also compiling with optimizations turned off. Try adding -O3 to your command line when you test performance. On Wed, Jan 30, 2019 at 6:18 PM James E. King III via Boost < boost@lists.boost.org> wrote:

On Wed, Jan 30, 2019 at 8:13 PM lx via Boost wrote:

...

1.The client don't keep alive, and start a new connection each time. 2.I get openssl-1.1.0j from https://www.openssl.org/source/openssl-1.1.0j.tar.gz 3.we can improve some performance ? Or let Nginx turn HTTP/S to HTTP, and asio just handle HTTP ?

Thank you.

What you are reporting is normal. The overhead of establishing a SSL/TLS connection is very high. Change your client to send multiple requests per connection instead of one per connection, that will solve your problem. This is how web browsers avoid the same issue, for example.

- Jim

_______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost

Please do not top post: https://www.boost.org/community/policy.html#quoting Thank you - michael-with-his-moderator-hat -- Michael Caisse Ciere Consulting ciere.com On 1/30/19 22:24, lx via Boost wrote:

I complie it by:

g++ -O3 -g -Wall -o https_server2 *.cpp -I/usr/local/include/ -I/usr/local/openssl-1.1.0j/include -L/usr/local/openssl-1.1.0j/lib -I/usr/local/boost_1_64_0/include /usr/local/boost_1_64_0/lib/libboost_thread.a /usr/local/boost_1_64_0/lib/libboost_system.a -Wl,-Bstatic -lglog -lunwind -Wl,-Bdynamic -lpthread -lcrypto -lssl -ldl -lrt

But it don't work.

Thank you.

David Stone via Boost 于2019年1月31日周四 下午12:43写道：