PowerShell / PowerShell/Win32-OpenSSH

rsync: connection unexpectedly closed (0 bytes received so far) [Receiver]

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Description

Troubleshooting steps
https://github.com/PowerShell/Win32-OpenSSH/wiki/Troubleshooting-Steps

  1. Configure OpenSSH Server

    Invoke-WebRequest -Uri https://github.com/PowerShell/Win32-OpenSSH/releases/download/V8.6.0.0p1-Beta/OpenSSH-Win64.zip -OutFile "$env:TEMP/OpenSSH-Win64.zip"

Expand-Archive -LiteralPath "$env:TEMP/OpenSSH-Win64.zip" -DestinationPath "$env:TEMP\OpenSSH"

mkdir "$env:ProgramFiles\OpenSSH"
Copy-Item -Path "$env:TEMP\OpenSSH\OpenSSH-Win64\*" -Destination "$env:ProgramFiles\OpenSSH" -Recurse

cd "$env:ProgramFiles\OpenSSH"
powershell.exe -ExecutionPolicy Bypass -File install-sshd.ps1

Start-Service sshd

Set-Service -Name sshd -StartupType 'Automatic'

New-NetFirewallRule -Name sshd -DisplayName 'OpenSSH Server (sshd)' -Enabled True -Direction Inbound -Protocol TCP -Action Allow -LocalPort 22

New-ItemProperty -Path "HKLM:\SOFTWARE\OpenSSH" -Name DefaultShell -Value "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -PropertyType String -Force

  2. Install cwRsync

    Invoke-WebRequest -Uri https://itefix.net/dl/free-software/cwrsync_6.2.4_x64_free.zip -OutFile "$env:TEMP/cwrsync_6.2.4_x64_free.zip"

Expand-Archive -LiteralPath "$env:TEMP\cwrsync_6.2.4_x64_free.zip" -DestinationPath "$env:TEMP\cwrsync"

mkdir "C:\cwrsync"
Copy-Item -Path "$env:TEMP\cwrsync\cwrsync_6.2.4_x64_free\*" -Destination "C:\cwrsync" -Recurse

# Append C:\cwrsync\bin to PATH system environment variable
Invoke-WebRequest -Uri "https://github.com/doggy8088/SetEnv/releases/download/1.0/SetEnv.exe" -OutFile "SetEnv.exe"
.\SetEnv.exe -a PATH %C:\cwrsync\bin

# Restart sshd
Restart-Service sshd

  3. Create user1 user locally with password 123

    net user user1 123 /add

  4. Try to copy file using scp

    echo 123 > test.txt
scp .\test.txt user1@localhost:.

  5. Try to copy file using rsync

    rsync -e 'ssh.exe' -avzr .\test.txt user1@localhost:.

    This will fail.

    rsync: connection unexpectedly closed (0 bytes received so far) [Receiver]
rsync error: error in rsync protocol data stream (code 12) at io.c(228) [Receiver=3.2.3]
rsync: connection unexpectedly closed (0 bytes received so far) [sender]
rsync error: error in rsync protocol data stream (code 12) at io.c(228) [sender=3.2.3]

    I tried to troubleshoot this problem.

    rsync -e 'ssh.exe -v' -avzr .\test.txt user1@localhost:.

    It shows:

    OpenSSH_for_Windows_8.1p1, LibreSSL 3.0.2
debug1: Connecting to localhost [::1] port 22.
debug1: Connection established.
debug1: identity file C:\\Users\\WDAGUtilityAccount/.ssh/id_rsa type -1
debug1: identity file C:\\Users\\WDAGUtilityAccount/.ssh/id_rsa-cert type -1
debug1: identity file C:\\Users\\WDAGUtilityAccount/.ssh/id_dsa type -1
debug1: identity file C:\\Users\\WDAGUtilityAccount/.ssh/id_dsa-cert type -1
debug1: identity file C:\\Users\\WDAGUtilityAccount/.ssh/id_ecdsa type -1
debug1: identity file C:\\Users\\WDAGUtilityAccount/.ssh/id_ecdsa-cert type -1
debug1: identity file C:\\Users\\WDAGUtilityAccount/.ssh/id_ed25519 type -1
debug1: identity file C:\\Users\\WDAGUtilityAccount/.ssh/id_ed25519-cert type -1
debug1: identity file C:\\Users\\WDAGUtilityAccount/.ssh/id_xmss type -1
debug1: identity file C:\\Users\\WDAGUtilityAccount/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_for_Windows_8.1
debug1: Remote protocol version 2.0, remote software version OpenSSH_for_Windows_8.6
debug1: match: OpenSSH_for_Windows_8.6 pat OpenSSH* compat 0x04000000
debug1: Authenticating to localhost:22 as 'user1'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:ceWbZ99XvvQUHF8bsSdEvvQaHpMaE54eGir9SQ+3cwc
debug1: Host 'localhost' is known and matches the ECDSA host key.
debug1: Found key in C:\\Users\\WDAGUtilityAccount/.ssh/known_hosts:3
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey in after 134217728 blocks
debug1: pubkey_prepare: ssh_get_authentication_socket: No such file or directory
debug1: Will attempt key: C:\\Users\\WDAGUtilityAccount/.ssh/id_rsa
debug1: Will attempt key: C:\\Users\\WDAGUtilityAccount/.ssh/id_dsa
debug1: Will attempt key: C:\\Users\\WDAGUtilityAccount/.ssh/id_ecdsa
debug1: Will attempt key: C:\\Users\\WDAGUtilityAccount/.ssh/id_ed25519
debug1: Will attempt key: C:\\Users\\WDAGUtilityAccount/.ssh/id_xmss
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,sk-ssh-ed25519@openssh.com,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ecdsa-sha2-nistp256@openssh.com,webauthn-sk-ecdsa-sha2-nistp256@openssh.com>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Trying private key: C:\\Users\\WDAGUtilityAccount/.ssh/id_rsa
debug1: Trying private key: C:\\Users\\WDAGUtilityAccount/.ssh/id_dsa
debug1: Trying private key: C:\\Users\\WDAGUtilityAccount/.ssh/id_ecdsa
debug1: Trying private key: C:\\Users\\WDAGUtilityAccount/.ssh/id_ed25519
debug1: Trying private key: C:\\Users\\WDAGUtilityAccount/.ssh/id_xmss
debug1: Next authentication method: keyboard-interactive
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: password
debug1: read_passphrase: can't open /dev/tty: No such file or directory
user1@localhost's password:
debug1: Authentication succeeded (password).
Authenticated to localhost ([::1]:22).
debug1: channel 0: new [client-session]
debug1: Requesting no-more-sessions@openssh.com
debug1: Entering interactive session.
debug1: pledge: network
debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_reply 0
debug1: Sending command: rsync --server -vlogDtprze.iLsfxCIvu . .
rsync: connection unexpectedly closed (0 bytes received so far) [Receiver]
rsync error: error in rsync protocol data stream (code 12) at io.c(228) [Receiver=3.2.3]
rsync: connection unexpectedly closed (0 bytes received so far) [sender]
rsync error: error in rsync protocol data stream (code 12) at io.c(228) [sender=3.2.3]

    I can't really understand what's the problem.

  6. Change to use cwRsync's ssh.exe

    rsync -e 'c:\cwrsync\bin\ssh.exe' -avzr .\test.txt user1@localhost:.

    This will okay!

    sending incremental file list
.\test.txt

sent 110 bytes  received 41 bytes  60.40 bytes/sec
total size is 12  speedup is 0.08

    Try to show ssh logs:

    rsync -e 'c:\cwrsync\bin\ssh.exe -v' -avzr .\test.txt user1@localhost:.

    The result:

    OpenSSH_8.8p1, LibreSSL 3.3.3
debug1: Authenticator provider $SSH_SK_PROVIDER did not resolve; disabling
debug1: Connecting to localhost [::1] port 22.
debug1: Connection established.
debug1: identity file /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_rsa type -1
debug1: identity file /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_rsa-cert type -1
debug1: identity file /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_dsa type -1
debug1: identity file /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_dsa-cert type -1
debug1: identity file /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_ecdsa type -1
debug1: identity file /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_ecdsa-cert type -1
debug1: identity file /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_ecdsa_sk type -1
debug1: identity file /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_ed25519 type -1
debug1: identity file /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_ed25519-cert type -1
debug1: identity file /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_ed25519_sk type -1
debug1: identity file /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_xmss type -1
debug1: identity file /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_8.8
debug1: Remote protocol version 2.0, remote software version OpenSSH_for_Windows_8.6
debug1: compat_banner: match: OpenSSH_for_Windows_8.6 pat OpenSSH* compat 0x04000000
debug1: Authenticating to localhost:22 as 'user1'
debug1: load_hostkeys: fopen /cygdrive/c/Users/WDAGUtilityAccount/.ssh/known_hosts2: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh_known_hosts2: No such file or directory
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ssh-ed25519
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: SSH2_MSG_KEX_ECDH_REPLY received
debug1: Server host key: ssh-ed25519 SHA256:TVkVEMTOVm8acWX4VFrviwD9t4FeFxN5qILJjjYZiIQ
debug1: load_hostkeys: fopen /cygdrive/c/Users/WDAGUtilityAccount/.ssh/known_hosts2: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh_known_hosts2: No such file or directory
debug1: Host 'localhost' is known and matches the ED25519 host key.
debug1: Found key in /cygdrive/c/Users/WDAGUtilityAccount/.ssh/known_hosts:1
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey in after 134217728 blocks
debug1: Will attempt key: /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_rsa
debug1: Will attempt key: /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_dsa
debug1: Will attempt key: /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_ecdsa
debug1: Will attempt key: /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_ecdsa_sk
debug1: Will attempt key: /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_ed25519
debug1: Will attempt key: /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_ed25519_sk
debug1: Will attempt key: /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_xmss
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,sk-ssh-ed25519@openssh.com,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ecdsa-sha2-nistp256@openssh.com,webauthn-sk-ecdsa-sha2-nistp256@openssh.com>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Trying private key: /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_rsa
debug1: Trying private key: /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_dsa
debug1: Trying private key: /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_ecdsa
debug1: Trying private key: /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_ecdsa_sk
debug1: Trying private key: /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_ed25519
debug1: Trying private key: /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_ed25519_sk
debug1: Trying private key: /cygdrive/c/Users/WDAGUtilityAccount/.ssh/id_xmss
debug1: Next authentication method: keyboard-interactive
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: password
user1@localhost's password:
Authenticated to localhost ([::1]:22) using "password".
debug1: channel 0: new [client-session]
debug1: Requesting no-more-sessions@openssh.com
debug1: Entering interactive session.
debug1: pledge: filesystem full
debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_reply 0
debug1: client_input_hostkeys: searching /cygdrive/c/Users/WDAGUtilityAccount/.ssh/known_hosts for localhost / (none)
debug1: client_input_hostkeys: searching /cygdrive/c/Users/WDAGUtilityAccount/.ssh/known_hosts2 for localhost / (none)
debug1: client_input_hostkeys: hostkeys file /cygdrive/c/Users/WDAGUtilityAccount/.ssh/known_hosts2 does not exist
debug1: client_input_hostkeys: no new or deprecated keys from server
debug1: Sending command: rsync --server -vlogDtprze.iLsfxCIvu . .
sending incremental file list
rsync: [sender] link_stat "/cygdrive/c/Users/WDAGUtilityAccount/.\test.txt" failed: No such file or directory (2)
debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
debug1: client_input_channel_req: channel 0 rtype eow@openssh.com reply 0
debug1: channel 0: free: client-session, nchannels 1
Transferred: sent 2164, received 2704 bytes, in 1.6 seconds
Bytes per second: sent 1328.0, received 1659.4
debug1: Exit status 0

sent 19 bytes  received 12 bytes  8.86 bytes/sec
total size is 0  speedup is 0.00
rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1330) [sender=3.2.3]

Terminal issue? please go through wiki
https://github.com/PowerShell/Win32-OpenSSH/wiki/TTY-PTY-support-in-Windows-OpenSSH

Please answer the following

"OpenSSH for Windows" version
((Get-Item (Get-Command sshd).Source).VersionInfo.FileVersion)

8.6.0.0

Server OperatingSystem
((Get-ItemProperty "HKLM:\SOFTWARE\Microsoft\Windows nt\CurrentVersion\" -Name ProductName).ProductName)

Windows 10 Enterprise

Client OperatingSystem

Same machine

Windows 10 Enterprise

What is failing

Show in Troubleshooting steps Step 5.

Expected output

Show in Troubleshooting steps Step 6.

I expected the Win32-OpenSSH's ssh.exe should able to use with any program.

Actual output

Show in Troubleshooting steps Step 5.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the failure using the listed OpenSSH 8.1 and OpenSSH server setup, then compare it with the successful command using C:\cwrsync\bin\ssh.exe. Start with the verbose SSH output and the rsync command invocation; done means identifying and correcting the Windows OpenSSH/rsync compatibility problem or documenting the required workaround.

Written by the indexing model from the issue text.

Assessment

Tech stack
powershell, shell
Domain
cli, networking, operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
48/100

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