Re: Using libcurl sending much more HTTP request in parallel

Hi Daniel, I find some something, let me show you. My application using epoll listen fd. if(fd.events & EPOLLOUT) { curl_multi_socket_action(multi, fd, CURL_CSELECT_OUT, _running); } I found two issues: 1. curl_multi_socket_action, I pass active fd, but libcurl also do others fds, if(s

Re: Using libcurl sending much more HTTP request in parallel

Thanks,I modified my application, but I still have HTTPS performance issue. I send 40 https request at the same time. They all create new connection and connect server. I found CPU burst to 56%, then down, this high CPU time duration about 500ms . I found https_connecting, maybe in handshake cause

Re: Using libcurl sending much more HTTP request in parallel

Thanks，I will dig this Daniel Stenberg > On Tue, 15 Aug 2017, Jack wrote: > > > Thanks,I modified my application, but I still have HTTPS performance > issue. > > I send 40 https request at the same time. They all create new connection > and > > connect server. I found CPU burst

Re: Using libcurl sending much more HTTP request in parallel

Thanks for your response，i will retry this. I have another question，for high performance，can i firstly create many easy handles，then use them，such as memory poll，this will avoid to create and destroy frequently？ Does this make sense？if make sense，which API can do this for multi interface？ thanks！

Re: Using libcurl sending much more HTTP request in parallel

> > ok， please ignore this,could you comment for this or my previous review two mails thanks Stenberg wrote: > On Wed, 9 Aug 2017, fan fan via curl-library wrote: > >In my application, I using libcurl to send 40 HTTP requests in every >> one second. As I test, this consume

Re: Using libcurl sending much more HTTP request in parallel

Thanks, so 1. If send more requests simultaneously， this policy will consume much CPU time in one loop. 2. Does we have any plan to re-use SSL "context"? --- Unsubscribe: https://cool.haxx.se/list/listinfo/curl-library Etiquette:

Re: Using libcurl sending much more HTTP request in parallel

Very appreciate for your help. I take this :) --- Unsubscribe: https://cool.haxx.se/list/listinfo/curl-library Etiquette: https://curl.haxx.se/mail/etiquette.html

Re: Using libcurl sending much more HTTP request in parallel

On Thu, Aug 10, 2017 at 6:33 AM, Daniel Stenberg wrote: > On Wed, 9 Aug 2017, fan fan via curl-library wrote: > >In my application, I using libcurl to send 40 HTTP requests in every >> one second. As I test, this consume much CPU, my application such as: >> >> main thread

Re: Using libcurl sending much more HTTP request in parallel

By the way I use hiperfifo.c to send HTTPS 40 requests at the same time in https://curl.haxx.se/libcurl/c/hiperfifo.html CPU sometimes burst to 69% or 80%, quickly down to 25% then to 0.0% Code below: static void fifo_cb(int fd, short event, void *arg) { char s[1024]; long int rv=0; int

Re: Using libcurl sending much more HTTP request in parallel

Yes, I did this，without ca boundle > [...] > > SSL_CTX_load_verify_locations why consume 20ms every time? Openssl read > > /etc/pki/tls/certs/ca-bundle.crt once time, I don't change this file, why > > Openssl not cache this? > > As a workaround, you can set CURLOPT_CAINFO to point to a single >

Re: Does libcurl support TLS/SSL SNI?

I got, thanks, Daniel right. On Wed, Oct 25, 2017 at 2:15 PM, Daniel Stenberg <dan...@haxx.se> wrote: > On Wed, 25 Oct 2017, Jack via curl-library wrote: > > Does libcurl have other option to support SNI in SSL client hello? >> > > libcurl always uses SNI in