imap, upgrade tls fix#16213
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There were two places in the code that tried to connect the SSL filter, e.g. do the TLS handshake, but only one changed imap state to CAPA afterwards. Depending on timing, the wrong path was taken and the connection was hanging, waiting for a server reply to a command not sent. Do the upgrade to tls in one place and update connection filter and smtps protocol handler at the same time. Always transition to CAPA on success.
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Analysis of PR #16213 at 24d96d65: Test 987 failed, which has NOT been flaky recently, so there could be a real issue in this PR. Note that this test has failed in 4 different CI jobs (the link just goes to one of them). Generated by Testclutch |
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There were two places in the code that tried to connect the SSL filter, e.g. do the TLS handshake, but only one changed imap state to CAPA afterwards. Depending on timing, the wrong path was taken and the connection was hanging, waiting for a server reply to a command not sent. Do the upgrade to tls in one place and update connection filter and smtps protocol handler at the same time. Always transition to CAPA on success. Closes curl#16213
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There were two places in the code that tried to connect the SSL filter, e.g. do the TLS handshake, but only one changed imap state to CAPA afterwards.
Depending on timing, the wrong path was taken and the connection was hanging, waiting for a server reply to a command not sent.
Do the upgrade to tls in one place and update connection filter and smtps protocol handler at the same time. Always transition to CAPA on success.