On Mon, 13 May 2013, Sam Deane wrote:
We've been getting a problem with our unit tests where FTP uploads using curl_multi were stalling.
Multi or easy makes no difference internally these days!
The test in question starts off three uploads and three downloads to the same server in parallel. Unless we're somehow missing an error condition somewhere, it looks like all the uploads hang.
Are you using active FTP? Does the problem require these three uploads/downloads to trigger? Do all the uploads hang at the same spot in the transfer, and if so where exactly is that?
I seem to have tracked this down to commit 57aeabcc1a2
I don't understand how this waiting for an additional socket (that the commit introduced) can cause a hang like that! Can you?
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