tree 6c635c139e0d0b6a4ce966e562cb978e0229cfe3
parent de68b1351f515559ca561e2d49beca3b1fdd163e
author Christopher Faulet <cfaulet@haproxy.com> 1544439407 +0100
committer Willy Tarreau <w@1wt.eu> 1544471419 +0100
encoding latin1

BUG/MEDIUM: mux-h1: Add a BUSY mode to not loop on pipelinned requests

When a request is fully processed, no more data are parsed until the response is
totally processed and a new transaction starts. But during this time, the mux is
trying to read more data and subscribes to read. If requests are pipelined, we
start to receive the next requests which will stay in the input buffer, leading
to a loop consuming all the CPU. This loop ends when the transaction ends. To
avoid this loop, the flag H1C_F_IN_BUSY has been added. It is set when the
request is fully parsed and unset when the transaction ends. Once set on H1C, it
blocks the reads. So the mux never tries to receive more data in this state.