On Tue, 25 Jan 2022, Silas via curl-library wrote:
I'm using multi interface to keep different connections (not more than 3), polling it for updates. But, whenever my local IP address change (and also the routing table), I keep receiving CURLE_OPERATION_TIMEDOUT (28), even though connection to the rest of the network is fully restablished after IP and route changing. Removing it (with curl_multi_remove_handle()) and cleaning it up (with curl_easy_cleanup()) is not enough: the only way to make it work again is to destroy my multi handler (with curl_multi_cleanup()) and creating it again (with curl_multi_init()).
This smells like something is wrongly used from a cache when it shouldn't, but I can't figure out what.
If you enable CURLOPT_VERBOSE for the attempt after the network change, does it reveal any details of what exactly it is that fails and thus make libcurl time out?
I can provide you with a small C program and a 2 line shell script (to change network configuration in a NetBSD or Linux box) to reproduce this behaviour, if you want.
Plese do. And tell us what libcurl version you're using for this. -- / daniel.haxx.se | Commercial curl support up to 24x7 is available! | Private help, bug fixes, support, ports, new features | https://curl.se/support.html -- Unsubscribe: https://lists.haxx.se/listinfo/curl-library Etiquette: https://curl.haxx.se/mail/etiquette.html
