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authorPatrick Monnerat <patrick@monnerat.net>2018-01-14 19:43:12 +0100
committerPatrick Monnerat <patrick@monnerat.net>2018-01-14 19:43:12 +0100
commite44ddfd477bdf3fa37438722055afa3aa4e5f8a3 (patch)
treee222ef75b1e8a6ca13813145c855fd6b2d450461 /tests/data/test589
parent2c821bba853a739ce4c311a4e8b4a33e75128dd2 (diff)
mime: clone mime tree upon easy handle duplication.
A mime tree attached to an easy handle using CURLOPT_MIMEPOST is strongly bound to the handle: there is a pointer to the easy handle in each item of the mime tree and following the parent pointer list of mime items ends in a dummy part stored within the handle. Because of this binding, a mime tree cannot be shared between different easy handles, thus it needs to be cloned upon easy handle duplication. There is no way for the caller to get the duplicated mime tree handle: it is then set to be automatically destroyed upon freeing the new easy handle. New test 654 checks proper mime structure duplication/release. Add a warning note in curl_mime_data_cb() documentation about sharing user data between duplicated handles. Closes #2235
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