WSAHOST_NOT_FOUND - 11001 (0x2AF9)

Technical Meaning

The WSAHOST_NOT_FOUND error code, with the numeric value 11001 (0x2AF9), indicates that a specified hostname or address could not be resolved to an appropriate network resource. This error is commonly encountered in Windows API functions related to socket programming and network communication.

Error Details

The WSAHOST_NOT_FOUND error typically arises when the system attempts to resolve a hostname but fails to find the corresponding IP address. This can occur due to various reasons, such as incorrect or non-existent hostnames, network configuration issues, or temporary unavailability of DNS services.

Usage Context

This error is often returned by functions in the Windows Sockets (Winsock) API when an attempt to resolve a hostname fails. Common scenarios include:

• gethostbyname and getaddrinfo functions
• Network application initialization routines
• Configuration checks for networked applications

Developer Interpretation

When encountering this error, developers should consider the following aspects:

• Verify the correctness of the hostname or address provided.
• Ensure that DNS services are properly configured and available.
• Check network connectivity and routing to ensure that the system can reach the intended host.
• Validate that the application has the necessary permissions to perform hostname resolution operations.

Related Errors

• WSANO_DATA (11004): No data is associated with the name, indicating a different issue from WSAHOST_NOT_FOUND.
• WSAECONNREFUSED (10061): Connection attempt refused by target host, which may indicate that the host exists but is not accepting connections.

FAQ

Q: What does WSAHOST_NOT_FOUND mean?

A: It indicates that no such host could be found for the specified hostname or address. This error typically occurs during network operations when a hostname cannot be resolved to an IP address.

Q: How can I resolve this issue?

A: Ensure that the hostname is correct and check DNS configurations. Verify network connectivity and ensure that the application has appropriate permissions to perform hostname resolution.

Summary

The WSAHOST_NOT_FOUND error code signifies a failure in resolving a specified hostname or address. Developers should focus on verifying input parameters, ensuring proper network configuration, and checking for necessary permissions when encountering this issue.