Vscode failed to use SSH Remote Connection (and a collection of other problems)

1. Common errors and solutions

Check your mistakes ,

• stay vscode Interface , help -> Switch developer tools
• If it is windows System , Direct shortcut ctrl+shift+I Open developer tools .

1.1 ERR Request 7 timed out (15000ms)

ERR Error: Time limit reached, Timeout error ,15000ms It's a parameter. , You can set the response waiting time , The default is 15s, It can be changed to another time

Reference resources Stack Overflow：why ssh connection timed out in vscode?

• file -> Preferences -> Set up
• stay Common settings in , find Expand ->Remote-SSH
• hold 15s Change to longer time
  

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in addition , Another way is to modify a configuration file .

It's still in the setup , Search for ssh, find stay setting.json Editor in chief

Add to this folder ："remote.SSH.useLocalServer": false,, The edited file is similar to the following ：

{
    
    "security.workspace.trust.untrustedFiles": "open",
    "remote.SSH.useLocalServer": false,
    "remote.SSH.remotePlatform": {
    
        "10.71.10.49": "linux",
        "10.70.21.10": "linux"
    },
    "workbench.colorTheme": "Quiet Light",
    "workbench.iconTheme": "office-material-icon-theme",
    "terminal.integrated.windowsEnableConpty": false,
}

If it doesn't work , It indicates that the network between local and remote servers may be really bad , In most cases, just reconnect a few times

1.2 ERR Error: WebSocket close with status code 1006

The information in the developer tool is as follows ：

It's actually output ->remote ssh in , There will also be some useful information ,

The error message is ：

Failed to set up socket for dynamic port forward to remote port XXX: Proxy connection timed out. Is the remote port correct?
The agent timed out ..（ Should be vpn There is a problem ？ however mobaxterm The connection is still very smooth ）

Reference resources Github：Vscode-issue
Some people choose to be demoted , however 2021 Year is 1.52 edition , now 1.66 了 , And the problem has been closed , The new version should have been solved

Reference resources

• why ssh connection timed out in vscode?

2. Look at the log and find a suitable solution

2.1 Confirmation error

thank Github Upper issue：Keeps reconnect and reload when Remote SSH with VPN #2565, Inspire me to look at my output , Determine remote log The location of the file .

Use xshell perhaps mobaxterm And other remote connection tools , Check the log file above , for example ：

vim /home/user/.vscode-server/.dfd34e8260c270da74b5c2d86d61aee4b6d56977.log

Find the error information , For example, mine is

[15:13:51] [Error: Could not find pty on pty host,   
 at C._throwIfNoPty (/home/user/.vscode-server/bin/dfd34e8260c270da74b5c2d86d61aee4b6d56977/out/vs/platform/terminal/node/ptyHostMain.js:20:5336),    
 at C.updateTitle (/home/user/.vscode-server/bin/dfd34e8260c270da74b5c2d86d61aee4b6d56977/out/vs/platform/terminal/node/ptyHostMain.js:20:1676),   
  at Object.call (/home/user/.vscode-server/bin/dfd34e8260c270da74b5c2d86d61aee4b6d56977/out/vs/platform/terminal/node/ptyHostMain.js:13:8332),   
   at E.onPromise (/home/user/.vscode-server/bin/dfd34e8260c270da74b5c2d86d61aee4b6d56977/out/vs/platform/terminal/node/ptyHostMain.js:12:4867),    
   at E.onRawMessage (/home/user/.vscode-server/bin/dfd34e8260c270da74b5c2d86d61aee4b6d56977/out/vs/platform/terminal/node/ptyHostMain.js:12:4262),    
   at /home/user/.vscode-server/bin/dfd34e8260c270da74b5c2d86d61aee4b6d56977/out/vs/platform/terminal/node/ptyHostMain.js:12:3554,    
   at L.invoke (/home/user/.vscode-server/bin/dfd34e8260c270da74b5c2d86d61aee4b6d56977/out/vs/platform/terminal/node/ptyHostMain.js:8:145),    
   at l.fire (/home/user/.vscode-server/bin/dfd34e8260c270da74b5c2d86d61aee4b6d56977/out/vs/platform/terminal/node/ptyHostMain.js:8:1856),    
   at process.U (/home/user/.vscode-server/bin/dfd34e8260c270da74b5c2d86d61aee4b6d56977/out/vs/platform/terminal/node/ptyHostMain.js:6:34661),    
   at process.emit (node:events:390:28),    
   at emit (node:internal/child_process:917:12),   
   at processTicksAndRejections (node:internal/process/task_queues:84:21)]

2.2 Search for solutions （ Need to wait for the official debug）

Further search vscode remote Error: Could not find pty on pty host, , according to Github Of issue：Could not find pty on pty host #144548.

• As like as two peas of false information. （ Automatic test robot discovery ..）
• 2022.3.7 Just assigned error
• Error code is located at here
• Repair time from 3 The month was put off to 4 month
• Wait

8. solve

The biggest gain ,

• https://code.visualstudio.com/docs/remote/troubleshooting#_configuring-key-based-authentication
• https://code.visualstudio.com/docs/remote/ssh
• These two documents introduce some in detail ssh Connect possible problems and solutions

1. to update vscode edition

the other day vscode Updated , The current version is 1.67.0

• help -> About
  

2. To configure ssh secret key

8.2.1 Source of ideas

The inspiration came from when I was looking for alternatives , notice VScode Remote debugging C++ The project includes X11（ LAN ） Middle configuration ssh secret key , You can save entering the password .

Remember vscode It has been disconnected before , Always let me enter the password , Then you can avoid this link by directly assigning keys .

8.2.2 Specific operation

Generate the key

• stay windows Input from the command line ssh-keygen, Then there will be some hints , Enter three times directly .
• stay C:\Users\yourname\.ssh You can see the newly generated key in the folder id_rsa.pub And a private key id_rsa

Copy the public key to the server

• Copy the public key to ~/.ssh/authorized_keys In file

Test whether the configuration is successful

• Enter... Directly on the command line ssh [email protected]
• See if you can connect directly without a password

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After the above is completed , Just go to vscode Make a remote connection , It's usually successful

I actually have an episode here

• Because the company computer will automatically encrypt , I am in the process of copying the public key to the server , Accidentally edited the public key file , So the file is encrypted
• stay vscode Of Remote-SSH Output panel , There was C:\Users\yourname\.ssh\id_rsa invalid format A hint like this .
• Regenerate the key public key , Be careful not to edit when copying , That's how it works

3. Replace the default ssh Tools

Report errors close - IO is still pending on closed socket. read:0, write:1, io:0000019BC2EE60

Replace OpenSSH by gitSSH

stay vscode Search in settings remote.SSH.path, Enter yourself in the pop-up input box git Of ssh The path of , for example ：D:\software\Git\usr\bin\ssh.exe

Set it up and then connect remotely , There will be similar in the output information

[22:59:38.015] Install and start server if needed
[22:59:38.018] Checking ssh with "D:\software\Git\usr\bin\ssh.exe -V"
[22:59:38.736] > OpenSSH_8.8p1, OpenSSL 1.1.1m  14 Dec 2021

[22:59:38.748] Running script with connection command: "D:\software\Git\usr\bin\ssh.exe"

That is, it has been used git Of ssh Remote connection is in progress

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Reference resources ：

• How can I use Windows’ built-in OpenSSH ssh-agent in VS Code, instead of Git bash’s?
• vscode-remote Of Github issue：Can’t connect to Ubuntu: unreachable or not Linux x86_64 - IO is still pending on closed socket #51
• Environment configuration – About vscode-ssh Under remote connection openssh And git Self contained ssh Conflict resolution

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Other ： There are generally two solutions ,

• One is to modify vscode Of Remote-SSH Plug in code , Yes ssh Join in -t Parameters , But in what I see Remote-SSH In the output information ,"C:\Users\huangs2\AppData\Local\Temp\vscode-linux-multi-line-command-XXXX-XXX.sh" | ssh -T -L 127.0.0.1:57124:127.0.0.1:33173 "XXX" bash, Has joined -T Parameters , It should be that this problem has been fixed , Therefore, it is not considered
• Another option is to use gitssh Instead of the default openssh, The following focuses on this scheme

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Check your current system SSH edition

• Use vscode When making a remote connection , In fact, this information will be printed , similar OpenSSH_for_Windows_8.1p1, LibreSSL 3.0.2
• In fact, you can enter directly on the command line ssh -V, Will also get OpenSSH_for_Windows_8.1p1, LibreSSL 3.0.2
• according to PowerShell/Win32-OpenSSH Of Github issue： close - IO is still pending on closed socket. read:1, write:0, io:0000023DE45AF900 #1899
• This problem may be related to the current system openssh The version is about .
• At first, I thought that if there was an error, I would restart OpenSSH, But there seems to be no place to enter commands ..

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Reference resources ：VSCode Remote connection configuration . Although this website doesn't look very good , But the above article is really good , Although we can't find the source of the collection .

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The following is an excerpt from this article

VSCode Connect to the development machine remotely , debugging Python or C++ The program , By configuring the local ssh, Theoretically, every time in VSCode Connect the remote machine in , After entering the password, you can connect .

First you need to make sure that VSCode Installed in Remote SSH plug-in unit .

Consider two situations ：

1. Can't connect , Or often drop the line

2. I don't want to enter the password every time

For questions 1, Consider installing git-for-windows, And add Git The installation directory usrin To the system PATH environment variable , And reopen VSCode To take effect （ Use git After installation ssh.exe replace Win10 Bring their own ssh.exe）

For questions 2, Consider configuration ssh-key. according to VSCode Official documents ：https://code.visualstudio.com/docs/remote/troubleshooting#_configuring-key-based-authentication

Because of the above VSCode Actions in the document , It's on this machine powershelll/terminal It's operated in , In practice, there may be errors in execution , For example, prompt ：

close - IO is still pending on closed socket. read:1, write:0, io:0000001B883956190

4. OpenSSH And gitSSH

Reference resources ： Give Way git Use Windows 10 OpenSSH

in addition , You can also refer to ：

• Using the OpenSSH client included in Windows 10 (1809) as your Git’s SSH client
• as well as Git on Windows: Force use of OpenSSH [closed]
  

3. Uninstall completely vscode

It's actually two steps ：

1. Uninstall the software itself
2. Some cache files （ To configure 、 Uninstall plug-ins ）

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First step ： Uninstall the software itself , Find the installation directory , Click on unis000.exe

The second step ： find C:\Users\yourname\AppData\Roaming Medium Code Folder , Delete .（ If not found AppData, stay see The admission Hidden items ）

The third step ： find C:\Users\yourname Folder , Delete the .vscode Folder

Reference resources ：

• How to uninstall VS Code completely?
• How to cleanly / completely re-install VS Code on Mac
• How to reinstall VSCode without losing extensions and user settings
• Uninstall Visual Studio Code

4. vscode Report errors

The window has crashed ( reason ：“crashed”, Code ：“-1073741819”)

There are two common solutions on the Internet ：

1. Set to compatibility mode
2. Increase the memory

according to Github issue：The window has crashed (reason: ‘crashed’, code: ‘-1073741819’) #132945, In fact, you can open the error record through a command , To see more detailed error information .

According to the document ：Creating and symbolicating local crash reports

1.  close vscode
2.  Enter at the command line `code --crash-reporter-directory <absolute-path>`, Note the absolute path , This path is used to store the subsequent generated crash dump file (vscode By default, it is added to path, So you can do )
    for example ：`code --crash-reporter-directory D:\package\vscode_dump`
3.  Then this command will automatically open vscode, You need to repeat your mistakes 
7.  Then go to the folder `.dmp` File record 

Reference resources ：

• CSDN Blog ： solve vscode The operation item is stuck Tips ： The window has crashed （ reason oom）
• Github issue：The window has crashed (reason: ‘crashed’, code: ‘-1073741819’) #132945
• CSDN： solve vscode Window failure
• CSDN： About Visual Studo Code among The window has crashed（ Wide port failure ） problem ！！！

5. Failed to set up socket for dynamic port forward to remote port

There are many solutions online , I tried it all over , I put it first if it is effective for my problem , The invalid ones are left behind

5.3 Change to server ssh Configuration of

Reference resources VSCode Remote SSH Connection Failed and VSCode Connect Linux Server error

Be careful , Don't change it in the container , Change in the server

# vi /etc/ssh/sshd_config

" You will probably see the following "
# override default of no subsystems
Subsystem       sftp    /usr/lib/openssh/sftp-server

# Example of overriding settings on a per-user basis
#Match User anoncvs
# X11Forwarding no
AllowTcpForwarding yes
" take AllowTcpForwarding  Remove the previous comment , meanwhile no Change it to yes"

" Then restart the service "
systemctl restart sshd

After the change , The short connection is normal

5.2 Delete the server side .vs-code

During remote connection , In fact, you can see in the output information , Contains the following

Switch to this folder , Delete the folder corresponding to your own connection , It's the one above bin/dfd34e8260c270da74b Folder ,

#  Open it and you will find many other connected files , Just delete your own 
/home/user/.vscode-server/bin> ls
6cba118ac49a1b88332f312a8f67186f7f3c1643  8908a9ca0f221f36507231afb39d2d8d1e182702  dfd34e8260c270da74b5c2d86d61aee4b6d56977
7f6ab5485bbc008386c4386d08766667e155244e  c722ca6c7eed3d7987c0d5c3df5c45f6b15e77d1

Connect again , You will find that a file with the same name will be created , Still called dfd34e8260c270da74b5c2d86.

5.1 Change the local configuration file

according to 【Vscode Remote】 Unable to connect ：Failed to set up socket for dynamic port forward to remote port

• ctrl+shift+P, Input Remote-SSH:Settings, Or find the setting user -> Expand ->Remote-SSH.
• hold Remote.SSH：Enable Agent Forwarding Remove the check of
  

6. And terminals pty The connection of the host process is not responding , The terminal may stop working （ restart pty host ）

And at first 2. Look at the log and find a suitable solution The problem of reporting errors in is similar , It's all with pty The host is related .

Report errors ： And terminals pty The connection of the host process is not responding , The terminal may stop working （ restart pty host ）

The corresponding English is ：The connection to the terminal’s pty host process is unresponsive, the terminals may stop working.

Though some github Upper issue It shows that this problem has been fixed , But thanks Connection to terminal’s pty host process is becoming unresponsive #130320

file -> Preferences -> Set up , Search for Windows Enable Conpty, Remove the check mark

Reference resources

• Github Issue:Terminal pty, not responding #148307
• Github Issue:The connection to the terminal’s pty host process is unresponsive, the terminals may stop working. #118159

7. Other problems

7.1 Terminal process "C:\Windows\System32\cmd.exe" Boot failure （ Exit code ：-1）

It's really a speechless problem , according to Exit codes You know ：

The exit code prompted when the terminal fails to start comes from shell, Rather than by VS code Generated .VS code Supports many types of shell, So there are many possible exit codes .
So when solving problems , Need to search shell And the corresponding exit code . for example ：PowerShell 4294901760, Or is it cmd 1 etc. .

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operation 1

Reference resources 2021-11-25 Terminal process “C:\Windows\System32\cmd.exe” Terminated , Exit code : 3221225786.

All terminals can be Use the old console Remove all options , Include powershell,cmd,Anaconda Prompt as well as Anaconda Powershell Prompt

No dice .

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operation 2

Reference resources About vscode Terminal process termination occurs , Exit code ：1 The situation of

It believes that the reason for the error is ：
because vscode There is a space in the file name of the installation directory , Change it to other characters or remove spaces
I do have this problem , After reinstallation , Report another error .

Invalid

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7.2 Debug type of installed configuration ’python’, But it is not supported in this environment

Debug type of installed configuration ’python’, But it is not supported in this environment