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Large SFTP transfers disconnecting #12284

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cyberduck opened this issue Apr 16, 2006 · 4 comments
Closed

Large SFTP transfers disconnecting #12284

cyberduck opened this issue Apr 16, 2006 · 4 comments
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@dkocher
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bug sftp SFTP Protocol Implementation worksforme
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2.8

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@cyberduck
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d7f2972 created the issue

When transfering large files over SFTP the connection will repeatedly disconnect. I have tried this with both a Linux and Mac OS X server and have seen the same results. The exact error given after the disconnect is "IO Error: Timeout waiting for server message".
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61f0130 commented

I've been having this issue with files over 2 gigs. It gets to the 2 gig point and then I have to attempt to resume the transfer

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ed7d159 commented

Cyberduck doesn't free memory for packets already sent; it in effect consumes all memory for large files, and then fails the transfer when the system runs out of memory.

The correct solution would be to use a fixed buffer for copying files. Without looking at the source, it feels like Cyberduck reserves new memory for each packet or chunk of file, instead of reusing the same memory.

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@dkocher commented

Garbage collection is not working effectivly in some cases it seems.

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@dkocher commented

Should be resolved. We do not depend on J2SSH anymore.

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bug sftp SFTP Protocol Implementation worksforme
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