> Host resolution seems to be OK, the curl connection instead reports an error > from inside OpenSSL:
I guess it will help if you provide full Curl verbose output for both cases, otherwise, it is not clear if the resolution was the same. For example, ares_getaddrinfo() might give IPv6 name resolution vs IPv4 one when using the old approach. > result == 35 : Error (OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection > to license.microanalytics.org:443 ) Did you try plain HTTP? OpenSSL error might have happened after connection was established, so it was too late to choose a different IP stack. Full verbose log may help to get more details. > I'm not sure how to do that, sorry. You can use the CURLOPT_INTERFACE option. It gives the ability to specify the network interface by IP address. Thanks, Dmitry Karpov -----Original Message----- From: curl-library <curl-library-boun...@lists.haxx.se> On Behalf Of Peter Krefting via curl-library Sent: Friday, January 20, 2023 12:20 AM To: Dmitry Karpov via curl-library <curl-library@lists.haxx.se> Cc: Peter Krefting <pe...@softwolves.pp.se> Subject: [EXTERNAL] RE: IPv6 issues with ares_getaddrinfo() Hi! > Do you get host resolution error with the curl 7.87.0 and c-ares > 1.18.1 or the host resolution is OK? Host resolution seems to be OK, the curl connection instead reports an error from inside OpenSSL: result == 35 : Error (OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to license.microanalytics.org:443 ) I have enabled CURLOPT_VERBOSE, and it outputs the above error when using a build that enables ares_getaddrinfo. The error is not printed when running without, and I instead get a IPv4 connection that goes through. > Can you try forcing libcurl to use every global IPv6 address for each > network interface and see if it helps? I'm not sure how to do that, sorry. -- \\// Peter - http://www.softwolves.pp.se/ -- Unsubscribe: https://lists.haxx.se/listinfo/curl-library Etiquette: https://curl.se/mail/etiquette.html -- Unsubscribe: https://lists.haxx.se/listinfo/curl-library Etiquette: https://curl.se/mail/etiquette.html
