On Tue, Aug 13, 2019 at 11:49:20AM +0200, Willy Tarreau wrote: > Excellent, I think you caught it! I can reproduce it here, except that > it doesn't last long, as soon as I get the socket error it's done. So > we indeed broke something in the connection setup.
Bug kindly brought to you by your benevolent dictator : commit d58f27feadbc71c947fa0810f49552a94c60dc9a (refs/bisect/bad) Author: Willy Tarreau <w...@1wt.eu> Date: Mon Jun 3 10:12:22 2019 +0200 MINOR: mux-h1: don't try to recv() before the connection is ready Just as we already do in h1_send(), if the connection is not yet ready, do not proceed and instead subscribe. This avoids a needless recvfrom() and subscription to polling for a case which will never work since the request was not even sent. I think the subscription prevents us from performing a synchronous operation somewhere, I'll check. Willy