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Fix errata in nc option in nixops ssh into deployed container on remo… #559

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Fix errata in nc option in nixops ssh into deployed container on remo… #559

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wavewave
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…te machine.

When connecting a remote container via nixops ssh, the following error happened.

$  nixops ssh -d query query 
nc: invalid option -- 'c'
usage: nc [-46bCDdhjklnrStUuvZz] [-I length] [-i interval] [-O length]
          [-P proxy_username] [-p source_port] [-q seconds] [-s source]
          [-T toskeyword] [-V rtable] [-w timeout] [-X proxy_protocol]
          [-x proxy_address[:port]] [destination] [port]
ssh_exchange_identification: Connection closed by remote host
query> could not connect to ‘root@mark.uphere.he~10.233.1.2’, retrying in 1 seconds...

This was because -c option should be -C. This pull request fixed the issue and I have tested that nixops ssh works well.

aszlig
aszlig requested changes Dec 3, 2016
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This is related to NixOS/nixpkgs#19411 and also please note that -c on GNU netcat is not the same as -C of the OpenBSD version.

GNU netcat: -c close connection on EOF from stdin
OpenBSD netcat: -C Send CRLF as line-ending.

@thufschmitt
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I think the correct option would be -q0 for OpenBSD netcat

@johbo johbo mentioned this pull request Mar 9, 2017
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@wavewave wavewave closed this Mar 15, 2017
@wavewave wavewave mentioned this pull request Apr 11, 2017
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@wavewave @thufschmitt @aszlig @domenkozar