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Some users are already hitting the 64k source port limit when connecting to servers. The system usually maintains a list of unused source ports, regardless of the source IP they're bound to. So in order to go beyond the 64k concurrent connections, we have to manage the source ip:port lists ourselves. The solution consists in assigning a source port range to each server and use a free port in that range when connecting to that server, either for a proxied connection or for a health check. The port must then be put back into the server's range when the connection is closed. This mechanism is used only when a port range is specified on a server. It makes it possible to reach 64k connections per server, possibly all from the same IP address. Right now it should be more than enough even for huge deployments. |
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| .. | ||
| acl.h | ||
| backend.h | ||
| buffers.h | ||
| capture.h | ||
| fd.h | ||
| freq_ctr.h | ||
| global.h | ||
| hdr_idx.h | ||
| httperr.h | ||
| log.h | ||
| pipe.h | ||
| port_range.h | ||
| proto_http.h | ||
| proto_tcp.h | ||
| protocols.h | ||
| proxy.h | ||
| queue.h | ||
| server.h | ||
| session.h | ||
| signal.h | ||
| stream_interface.h | ||
| task.h | ||
| template.h | ||