Dear all,i've just commited an update to naviserver to handle HTML output streaming (e.g. via ns_write) as well asynchronously over the writer thread(s). Therefore, a slow delivery line (e.g. returning the content over a slow connection) does not stall a connection thread. This modification removes the vulnerability for streaming output against slow-read attacks, since the time spent in the connection thread is just determined by the computation and not by the delivery throughput of the content. This feature is currently turned off by default and can be controlled by the drivers configuration variable "writerstreaming". For runtime configuration, ns_writer has now two new subcommands "ns_writer size" and "ns_writer streaming" to modify the writer settings without reboot.
With this change, all input and output of naviserver can be handled asynchronously, the connection threads can run without being blocked from slow connections.
I have updated the commented changelog at https://next-scripting.org/xowiki/docs/misc/naviserver-connthreadqueue All the best -gustaf neumann
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