使用Python PySFTP连接远程服务器时出现WinError 10060错误求助

First off, let's break down what that error means: WinError 10060 is a TCP connection timeout—your machine can't establish a basic network connection to the target server's specified port. Since your code works fine with other servers, the issue is specific to this one, not your code itself. Here are the most likely causes and how to check them:

• Target server isn't reachable over the network
  Start with a basic ping test to verify the server is online and your network can reach it:

  ping myhostname.com
  

  If ping fails, either the domain isn't resolving correctly, the server is offline, or there's a routing issue between you and the server. If ping succeeds but SFTP still fails, move on to checking the port.

• Incorrect port number
  Double-check that myPort matches the actual SFTP port the server is listening on. The default is 22, but many servers use custom ports (like 2222) for security. Test if the port is open with telnet:

  telnet myhostname.com <your_port_number>
  

  If telnet can't connect, either the port is wrong, or something is blocking traffic to it.

• Firewall restrictions (local or remote)

  • Local firewall: Your Windows firewall might be blocking outbound connections to the target port or Python's access to the network. Check your firewall settings to ensure your script has permission to connect out, and the port isn't blocked.
  • Remote firewall: The server's firewall could be rejecting connections from your IP address. Many SFTP servers restrict access to specific IP ranges—reach out to the server admin to confirm your IP is allowed.

• DNS resolution issues
  Sometimes the domain myhostname.com resolves to the wrong IP address. Try replacing the hostname with the server's direct public IP address in your code. If that works, you have a DNS problem to fix (like flushing your local DNS cache or checking the domain's DNS records).

• Proxy/VPN interference
  If you're using a proxy server or VPN, it might be blocking or misrouting SFTP traffic. Try disabling the proxy/VPN temporarily and running your script again to see if the connection succeeds.

One quick note: Setting cnopts.hostkeys = None skips SSH host key verification, but this error happens at the TCP level—before any SSH handshake even starts. So you don't need to worry about SSH key issues here.

内容的提问来源于stack exchange，提问作者Umang Bhatia