Hi, I am trying to implement credit-based flow control from Chapter 7 of the guide using ROUTER-DEALER. However, I am dropping messages on the ROUTER side when reaching the SNDHWM. If I set the maximum amount of credits to a fraction of the SNDHWM I don't drop any messages. I checked the code in pipe.cpp and saw that the reader side of the pipe only notifies the writer when it has read a multiple of the LWM.
Does this mean that if the number of messages written by the ROUTER to a peer pipe approaches the SNDHWM and in the meantime I get more credits before the reader reaches the LWM I may drop messages? If so, are there any workarounds? I was thinking of setting the maximum credit value to SNDHWM - LWM to ensure that the number of messages written doesn't go above the SNDHWM. I am using libzmq 3.2.3 and I noticed that in newer versions there's a patch for notifying the application when sending a message to a ROUTER fails. Thanks in advance Gabriel
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