[dolphin] [Bug 425734] Dolphin can't connect to SFTP server

Harald Sitter bugzilla_noreply at kde.org
Mon Aug 31 10:51:39 BST 2020


https://bugs.kde.org/show_bug.cgi?id=425734

--- Comment #5 from Harald Sitter <sitter at kde.org> ---
I'm fairly certain there is something in either your .ssh/config or
etc/ssh/ssh_config that messes with things. I can't reproduce this on a
pristine neon install.

It could very well be a bug in libssh though.

One of the instances says
> log_kio_sftp: [ ssh_list_kex ] ( 4 )  ssh_list_kex: compression algo client->server: none
> ...
> log_kio_sftp: [ ssh_list_kex ] ( 4 )  ssh_list_kex: compression algo server->client: none
> ...
> log_kio_sftp: [ ssh_kex_select_methods ] ( 1 )  ssh_kex_select_methods: kex error : no match for method compression algo client->server: server [none], client [zlib at openssh.com,zlib]

Neither end was taking about zlib, yet somehow the internal kex list contained
zlib.... Which may be because irritatingly almost at the beginning there was a
connection being made with compression:

> log_kio_sftp: [ ssh_list_kex ] ( 4 )  ssh_list_kex: compression algo client->server: zlib at openssh.com,zlib

I do not see that being the case when using a new neon installation. So my best
guess is that something in your config prompted libssh to connect with
compression enabled and later getting confused about the kex list because there
was a connection with compression and then there was one without.

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