Ftp_get unable to build data connection cannot assign requested address

This error can happen when trying to transfer a file or list a directory in Active (PORT) mode. The problem is usually solved by switching to Passive mode. Set the Ftp2.Passive property equal to True.

Explanation of the problem: In Active mode, the data connection is setup like this: The client sends a PORT command telling the server the port where it will be listening for the data connection. The server receives the PORT command and initiates a connection to the client’s IP/port. However, if a firewall is blocking the incoming connection, then it will go unanswered, and the server will timeout waiting for the connection to be accepted.

Blogroll

• * Release Notes
• Chilkat Binary Encodings
• Chilkat Character Encodings
• Chilkat Home
• Example Code
• Generate Chilkat Code from Postman
• How to Determine FTP Connection Settings
• How To Register ActiveX DLLs
• MSVC Runtimes for .NET Assemblies
• Never Handle Non-Text Binary Data as a String
• Online XML Signature Validators
• Reference Documentation
• SOAP WSDL to Chilkat Code
• Socket Programming Must-Know Concepts
• StackOverflow (Chilkat Software)

Tags

Copyright ©2024 Chilkat Tech Notes . All rights reserved. Powered by WordPress & Designed by Bizberg Themes