search for: supported2

...k. I suspect that the problem is that this server hasn't been tested against sftp clients supporting protocol 3, and it's violating the protocol spec by ignoring both the negotiated protocol version *and* the fact that (due to the protocol version) it hasn't been able to engage in 'supported2' negotiation, and is assuming that the 'max-read-size' extension is available. Under that extension, it *has* signalled EOF. Unfortunately protocol 3 doesn't support that extension, so we never realise this. (I suspect that SSH Communications Security knows about this and that the &...