When I run ssh-add -l , I get the following error:

To isolate the cause, could you try replacing omni-socat with <a href="https://github.

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WSL2 "error fetching identities: communication with agent failed" about omnisshagent HOT 5 CLOSED

masahide commented on June 4, 2024 1

WSL2 "error fetching identities: communication with agent failed"

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Comments (5)

RAnders00 commented on June 4, 2024 1

I've not gotten it to work even once, so yes, always. Thank you for taking the time to look into this. Let me know if you need any more details.

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RAnders00 commented on June 4, 2024 1

While tinkering around, I was able to find out what went wrong:

In omni-socat/ubuntu-bash.setup.sh, I replaced the socat start line with this to get the output:

(setsid socat UNIX-LISTEN:$SSH_AUTH_SOCK,fork EXEC:"$OMNISOCATCMD",nofork &) >$HOME/omni-socat/socat-output 2>&1

Which shows the following output:

2024/01/07 15:35:04 socat[89] E exactly 2 addresses required (there are 0); use option "-h" for help

Which, I found out, is caused by me not having a .ssh directory.

mkdir $HOME/.ssh

fixes everything.

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masahide commented on June 4, 2024

Sorry for the late reply.
Does this error always occur?

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masahide commented on June 4, 2024

To isolate the cause, could you try replacing omni-socat with npiperelay to see if it works? (npiperelay is a software similar to omni-socat that can proxy named-pipes via socat.)
Please perform the following operations on WSL2.

# download npiperelay_windows_amd64
$ wget https://github.com/jstarks/npiperelay/releases/download/v0.1.0/npiperelay_windows_amd64.zip
$ unzip npiperelay_windows_amd64.zip

$ ps axuw|grep socat
masahide 99065  0.0  0.0   6976  1832 ?        Ss   19:35   0:00 socat UNIX-LISTEN:/home/masahide/.ssh/agent.sock,fork EXEC:/home/masahide/omni-socat/omni-socat.exe -debug,nofork
masahide 99107  0.0  0.0   8172   660 pts/1    S+   19:36   0:00 grep --color=auto socat
# kill omni-socat.exe
$  killall socat

# start $HOME/npiperelay.exe
$ setsid socat UNIX-LISTEN:$SSH_AUTH_SOCK,fork EXEC:"$HOME/npiperelay.exe -ei -s //./pipe/openssh-ssh-agent",nofork
$ ps axuw|grep npi
masahide 98717  0.0  0.0   6976  1836 ?        Ss   19:29   0:00 socat UNIX-LISTEN:/home/masahide/.ssh/agent.sock,fork EXEC:/home/masahide/npiperelay.exe -ei -s //./pipe/openssh-ssh-agent,nofork
masahide 98740  0.0  0.0   8172   724 pts/1    S+   19:29   0:00 grep --color=auto npi

# list ssh agent keys
$ ssh-add -l
256 SHA256:...............