<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Sorry Gavin, I was getting confused between channel.flow and connection.blocked there. Someone pointed out that you're talking about <a href="http://www.rabbitmq.com/connection-blocked.html">http://www.rabbitmq.com/connection-blocked.html</a> - duh! I suspect however, that just because you've managed to get a publisher subject to flow control, doesn't necessarily mean that you've actually triggered a resource alarm such that connection.blocked will be sent. Producers can (and do) enter flow control if the broker/queue cannot keep up with publishing rates, but only when a low memory or disk alarm is trigger will the connection.blocked signal be sent.<div><br></div><div><div>Hope that makes sense and sorry for misunderstanding the question.</div><div><br></div><div>Cheers,</div><div>Tim</div><div><div><br><div><div>On 19 Dec 2013, at 08:25, Tim Watson wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><base href="x-msg://745/"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">AFAIK Rabbit hasn't sent connection.block to clients for quite some time. Instead, we introduce flow control in the broker through TCP back-pressure (i.e., not reading from producer's sockets). That is why you can see the connection in a flow state in the UI (because server-side flow control is in effect), but no connection.block is delivered to the client.<div><br></div><div>Cheers,</div><div>Tim<br><div><br><div><div>On 19 Dec 2013, at 00:05, Gavin M. Roy wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="font-family: Helvetica, Arial; font-size: 13px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div id="bloop_customfont" style="font-family: Helvetica, Arial; font-size: 13px; color: rgb(0, 0, 0); margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">At what point should Connection.Block be sent from RabbitMQ to a client application? I am able to see that I am triggering a Flow state in the RabbitMQ management UI but am not seeing any Connection.Block frames delivered to the client.</div><div id="bloop_customfont" style="font-family: Helvetica, Arial; font-size: 13px; color: rgb(0, 0, 0); margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><br></div><div id="bloop_customfont" style="font-family: Helvetica, Arial; font-size: 13px; color: rgb(0, 0, 0); margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Thanks in advance,</div><div id="bloop_customfont" style="font-family: Helvetica, Arial; font-size: 13px; color: rgb(0, 0, 0); margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><br></div><div id="bloop_customfont" style="font-family: Helvetica, Arial; font-size: 13px; color: rgb(0, 0, 0); margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Gavin</div><br><div class="" id="bloop_sign_1387411369458147072"></div>_______________________________________________<br>rabbitmq-discuss mailing list<br><a href="mailto:rabbitmq-discuss@lists.rabbitmq.com">rabbitmq-discuss@lists.rabbitmq.com</a><br><a href="https://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss">https://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss</a><br></div></span></blockquote></div><br></div></div></div>_______________________________________________<br>rabbitmq-discuss mailing list<br><a href="mailto:rabbitmq-discuss@lists.rabbitmq.com">rabbitmq-discuss@lists.rabbitmq.com</a><br>https://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss<br></blockquote></div><br></div></div></div></body></html>