> > If you can reproduce, you can of course break-point or printf-debug those > underlying functions to get more in-depth details about the particular > failure. If your curl uses OpenSSL, lib/vtsl/openssl.c:ossl_recv() will be > interesting!
So with SSL, we get: A005 OK Logged in A006 LIST "" "*" TLSv1.2 (IN), TLS alert, close notify (256): response reading failed And in printf: Curl_pp_readresp ossl_recv buffsize is 16384 SSL_read returned 0 SSL_get_error returned 6 SSL_ERROR_ZERO_RETURN result from Curl_read is 0 gotbytes: 0 result is set to CURLE_RECV_ERROR So any idea why a IMAP client would close the connection? Full log: Trying xxx... TCP_NODELAY set Connected to xxx (xxx) port 143 (#0) * OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ STARTTLS AUTH=PLAIN AUTH=LOGIN AUTH=DIGEST-MD5 AUTH=CRAM-MD5] Dovecot ready. A001 CAPABILITY * CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ STARTTLS AUTH=PLAIN AUTH=LOGIN AUTH=DIGEST-MD5 AUTH=CRAM-MD5 A001 OK Pre-login capabilities listed, post-login capabilities have more. A002 STARTTLS A002 OK Begin TLS negotiation now TLSv1.3 (OUT), TLS handshake, Client hello (1): TLSv1.3 (IN), TLS handshake, Server hello (2): TLSv1.2 (IN), TLS handshake, Certificate (11): TLSv1.2 (IN), TLS handshake, Server key exchange (12): TLSv1.2 (IN), TLS handshake, Server finished (14): TLSv1.2 (OUT), TLS handshake, Client key exchange (16): TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1): TLSv1.2 (OUT), TLS handshake, Finished (20): TLSv1.2 (IN), TLS handshake, Finished (20): SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384 Server certificate: subject: xxx start date: xxx expire date: xxx issuer: C=US; O=GeoTrust Inc.; CN=GeoTrust SHA256 SSL CA SSL certificate verify result: unable to get local issuer certificate (20), continuing anyway. A003 CAPABILITY * CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ AUTH=PLAIN AUTH=LOGIN AUTH=DIGEST-MD5 AUTH=CRAM-MD5 A003 OK Pre-login capabilities listed, post-login capabilities have more. A004 AUTHENTICATE DIGEST-MD5 + xxx= * A004 BAD Authentication aborted by client. A005 AUTHENTICATE CRAM-MD5 + xx== xxx= * CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS BINARY MOVE SNIPPET=FUZZY LITERAL+ NOTIFY METADATA SPECIAL-USE QUOTA ACL RIGHTS=texk A005 OK Logged in A006 LIST "" "*" TLSv1.2 (IN), TLS alert, close notify (256): response reading failed A007 LOGOUT response reading failed Closing connection 0 TLSv1.2 (OUT), TLS alert, close notify (256): Sincerely Christian -- Read our blog about news on our plugins: http://www.mbsplugins.de/ ------------------------------------------------------------------- Unsubscribe: https://cool.haxx.se/list/listinfo/curl-library Etiquette: https://curl.haxx.se/mail/etiquette.html
