Hi! We are using libcurl and multi handles in an application where we want debugging output and control over where that output is sent. We do this by setting CURLOPT_VERBOSE and CURLOPT_DEBUGFUNCTION, which sends all the output to our logging code.
After https://github.com/curl/curl/pull/3618 and https://github.com/curl/curl/pull/3598, we started getting '* Closing connection 0' messages on STDERR when curl_multi_cleanup() closes the connections in the connection cache. This is because the verbose flag is copied to the closure_handle but fdebug etc. are not. The reason for this is pretty well explained in https://github.com/curl/curl/pull/3598#issuecomment-466301175 , but the result is that we have no way controlling where the verbose output from the closure_handle goes. One workaround is to add and remove a dummy easy_handle with CURLOPT_VERBOSE=0 before doing curl_multi_cleanup(); this will at least silence the output on STDERR. But should there be a proper interface for controlling this? Regards, Kristoffer ------------------------------------------------------------------- Unsubscribe: https://cool.haxx.se/list/listinfo/curl-library Etiquette: https://curl.haxx.se/mail/etiquette.html
