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ASF GitHub Bot commented on TS-4087: ------------------------------------ Github user asfgit closed the pull request at: https://github.com/apache/trafficserver/pull/485 > H2 flexible resource limitation > ------------------------------- > > Key: TS-4087 > URL: https://issues.apache.org/jira/browse/TS-4087 > Project: Traffic Server > Issue Type: New Feature > Components: HTTP/2 > Reporter: Ryo Okubo > Assignee: Masaori Koshiba > Fix For: 6.2.0 > > > Current H2 implementation depends on FetchSM and PluginVC to forward > requests. But their memory footprint is very high. It may be vulnerable to > DoS attack. > As simple ways to avoid the problem, we can use two limitations, > _proxy.config.net.connections_throttle_ and > _proxy.config.http2.max_concurrent_streams_in_. But reducing number of > _proxy.config.net.connections_throttle_ causes that number of acceptable > HTTP/1.1 requests become lower. And reducing > _proxy.config.http2.max_concurrent_streams_in_ restricts benefits of H2. > I'd like to propose more flexible resource limitation for current H2 impl > based on number of active H2 streams. Its adding an upper limit of active H2 > streams. If tis exceeded, ATS send low number of > SETTINGS_MAX_CONCURRENT_STREAMS to clients and/or RST_STREAM frame. -- This message was sent by Atlassian JIRA (v6.3.4#6332)