Greetings, I am currently using HAProxy 2.8 and would like to clarify the exact behavior of the src_conn_cur counter.
>From my understanding, src_conn_cur is intended to count the number of concurrent connections from a single source IP address. However, I have a couple of questions regarding its behavior in specific scenarios: 1/ HTTP/2 multiplexing behavior In HTTP/2, multiple requests can be multiplexed over a single TCP connection. If a client opens one TCP connection and issues, for example, 20 parallel resource requests over that same connection, does src_conn_cur increment to 20 in that case? It seems to be that way from what I see but would be happy to have confirmation on this point. If so, is there another counter that operates strictly at the TCP connection level (i.e., that would count only 1 in this situation)? 2/ Interaction with http-request set-src Does src_conn_cur take into account modifications made by http-request set-src? In other words, if the source address is rewritten using set-src, is the counter evaluated against the modified source value? Thank you in advance for your clarification. Best regards, Olivier
