Hi,

We ran into a crash with libcurl where the branch at the following line is taken, after the check for writebytecount for http

https://github.com/bagder/curl/blob/master/lib/transfer.c line 2059

We are using SFTP, this error does not occur all the time. It's odd to take the branch since the protocol isn't http, its SFTP. In the function there seems to be a protocol check, but only if its an upload operation, which may be causing the issue.

We are reusing the curl context a lot, and there is a possibility that the proto isn't nulled during some operation when Curl_retry_request is being called. Looking through the codebase it looks like it's only nulled when the ssh connection is disconnected.

Thanks.

Nasron Cheong
Development Manager, Toronto Office
iNTERFACEWARE Inc.

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Received on 2012-07-11