<div dir="ltr"><div class="gmail_quote"><div dir="ltr"><span lang="EN-US" style="font-family:"Segoe UI",sans-serif;color:rgb(36,41,46);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">Dear systemd folks,<span lang="EN-US" style="font-family:"Segoe UI",sans-serif;color:rgb(36,41,46);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"> <span lang="EN-US" style="font-family:"Segoe UI",sans-serif;color:rgb(36,41,46);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">I have the following issue:<span lang="EN-US" style="font-family:"Segoe UI",sans-serif;color:rgb(36,41,46);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">An application does not receive dbus signals on its dbus file descriptor *while waiting* for a <span lang="EN-US" style="font-family:"Segoe UI",sans-serif;color:rgb(36,41,46);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">dbus-method response. Considered time frame: between sending the method-call and receiving <span lang="EN-US" style="font-family:"Segoe UI",sans-serif;color:rgb(36,41,46);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">its response. After the response is being received, the (indefinitely) queued signal is not delivered <span lang="EN-US" style="font-family:"Segoe UI",sans-serif;color:rgb(36,41,46);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">until another signal / method call triggers the sdbus file descriptor (which is supervised by <span lang="EN-US" style="font-family:"Segoe UI",sans-serif;color:rgb(36,41,46);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">select()/epoll()). <span lang="EN-US" style="font-family:"Segoe UI",sans-serif;color:rgb(36,41,46);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"> <span lang="EN-US" style="font-family:"Segoe UI",sans-serif;color:rgb(36,41,46);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">I committed a brief example with some more extensive explanation to:<span lang="EN-US" style="font-family:"Segoe UI",sans-serif;color:rgb(36,41,46);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"><a href="https://github.com/mue-jan/dbus-missing-signals-or-fd-issue" style="color:rgb(0,157,236)" target="_blank">https://github.com/mue-jan/dbus-missing-signals-or-fd-issue</a> <span lang="EN-US" style="font-family:"Segoe UI",sans-serif;color:rgb(36,41,46);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">Thanks in advance and best regards, <span lang="EN-US" style="font-family:"Segoe UI",sans-serif;color:rgb(36,41,46);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"> <span lang="EN-US" style="font-family:"Segoe UI",sans-serif;color:rgb(36,41,46);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">Jan</div> </div></div>