| Re: [mosquitto-dev] How to determine status of network loop |
use the non-threaded interface if you need more fine grained information? Tony Klein <tklein@xxxxxxxxxxx> wrote: > > I am a client using libmosquitto to connect to a broker over > TLS. > > I am having difficulty determining the status of the network > thread, or alternately the status of my connection attempt. > > I call mosquitto_loop_start() > then mosquitto_connect() > then wait for on_connect() callback to get driven. > > Perhaps the broker name does not resolve, > or perhaps the connection is refused (broker not running), or > perhaps the server or client certificates don't validate > properly, or perhaps any number of misadventures occur. > > Sometimes the connection will eventually succeed, > but sometimes it does not. > > How can my client determine what to do next? > > In some cases its appropriate to simply wait, because the > network thread is working, (For example, suppose the broker is > not running: mosquitto_connect() returns a "connection refused" > error, I can essentially ignore ... start the broker and the > connection completes as if by magic. Amazing.) > > in other cases its hopeless because the network thread has > exited and the waiting would be forever. (For example if either > server or client certificates fail to validate properly. > Bummer. No error return on connect(), no callback, no clue.) > > How do I know the difference? > > What technique can I use to determine if the network thread is > running, or to resolve faults that may have occurred? > > Regards, > Tony > St. Paul, Minnesota, USA > > _______________________________________________ > mosquitto-dev mailing list > mosquitto-dev@xxxxxxxxxxx > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/mosquitto-dev
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