Download
Browse source Changelog
Documentation
Project   Bug Bounty   Help us   Known bugs   TODO Protocols   CA bundle   HTTP Cookies   HTTP/2   SSL Certs Releases   Security   Version numbers   Vulnerabilities curl tool   man page   Tutorial   HTTP scripting Who and Why
libcurl
ABI API Competitors Examples Features Mailing list Related libs Using libcurl Tutorial Testimonials
Get Help
curl-library curl-users Mailing lists Book: Everything curl Video presentations Report a bug Paid support
Development
Autobuilds Code Style Contribute Deprecate Internals Release Notes Release Procedure Roadmap Run Tests Security Process Specifications Test curl
News
Changelog Release table
curl / Mailing Lists / curl-library / Single Mail
Buy commercial curl support from WolfSSL. We help you work out your issues, debug your libcurl applications, use the API, port to new platforms, add new features and more. With a team lead by the curl founder himself.

connection pooling with http/2 when multiplexing to remote http1.1/http2 server

From: Sangamkar, Dheeraj via curl-library <curl-library_at_cool.haxx.se>
Date: Wed, 29 May 2019 00:21:21 +0000

I am using a libcurl client to GET content using http/2 over tls from an http1.1/2 server.
I am using the multi interface.
CURLPIPE_WAIT is not set on the easy handles.
CURLMOPT_PIPELINING=MULTIPLEX on the multi handles.

With multiplexing enabled, the download throughput is always lower than without. Also, http/2 is slower than http/1.1.

Some questions:
Is this behavior expected?
Is libcurl multiplexing all my requests through a single tcp connection to server when using http/2?
Is it possible to increase the number of tcp connections to multiplex over but still cap it to a maximum without using many multi-handles? Or using many multi-handles is the right way to do this connection pooling when using http/2?

Libcurl version: 7.52.1-5+deb9u9 + some patches.
OS: Debian 9u9

-Dheeraj

-------------------------------------------------------------------
Unsubscribe: https://cool.haxx.se/list/listinfo/curl-library
Etiquette: https://curl.haxx.se/mail/etiquette.html
Received on 2019-05-29