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Based on the logs provided, it seems that the error occurs when attempting to clean up the SFTP requests. This suggests that the error might be happening when the client is trying to close the SFTP connection or perform other cleanup actions after completing the file transfer.
Here are a few steps you can take to diagnose and potentially fix the issue:
- Increase Timeout: Try increasing the timeout value for the SFTP connection to see if it helps in receiving a response from the server. You can adjust the timeout value in the options passed to the connect method.
2)Check Server Status: Ensure that the SFTP server is running and responsive. Check the server logs for any errors or warnings that might indicate issues with the server's operation.
- Network Connectivity: Verify that there are no network connectivity issues between your Lambda function and the SFTP server. You can use tools like ping or telnet to test the connectivity.
4)Server Load: Check the server's load and resource usage to see if it is overloaded or experiencing high traffic. If the server is overloaded, it may not be able to respond to requests in a timely manner.
5)Client Configuration: Double-check the client configuration to ensure that it is correctly configured to connect to the SFTP server. Verify the host, port, username, and private key values.
6) Error Handling: Implement more robust error handling in your code to handle cases where no response is received from the server. This could involve retrying the connection, logging the error for further investigation, or taking other appropriate actions.
- Library Updates: Ensure that you are using the latest version of the ssh2-sftp-client library, as newer versions may contain bug fixes or improvements that address issues like this.
By following these steps and carefully analyzing the logs and error messages, you should be able to diagnose and resolve the issue with your Lambda function's SFTP connection.
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