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7c669d7e0f
The dequeuing logic was completely wrong. First, a task was assigned to all servers to process the queue, but this task was never scheduled and was only woken up on session free. Second, there was no reservation of server entries when a task was assigned a server. This means that as long as the task was not connected to the server, its presence was not accounted for. This was causing trouble when detecting whether or not a server had reached maxconn. Third, during a redispatch, a session could lose its place at the server's and get blocked because another session at the same moment would have stolen the entry. Fourth, the redispatch option did not work when maxqueue was reached for a server, and it was not possible to do so without indefinitely hanging a session. The root cause of all those problems was the lack of pre-reservation of connections at the server's, and the lack of tracking of servers during a redispatch. Everything relied on combinations of flags which could appear similarly in quite distinct situations. This patch is a major rework but there was no other solution, as the internal logic was deeply flawed. The resulting code is cleaner, more understandable, uses less magics and is overall more robust. As an added bonus, "option redispatch" now works when maxqueue has been reached on a server. |
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| .. | ||
| acl.h | ||
| backend.h | ||
| buffers.h | ||
| checks.h | ||
| client.h | ||
| cttproxy.h | ||
| dumpstats.h | ||
| fd.h | ||
| hdr_idx.h | ||
| httperr.h | ||
| log.h | ||
| proto_http.h | ||
| proto_tcp.h | ||
| proto_uxst.h | ||
| protocols.h | ||
| proxy.h | ||
| queue.h | ||
| senddata.h | ||
| server.h | ||
| session.h | ||
| stream_sock.h | ||
| task.h | ||
| template.h | ||