Knowledge Base

PRB: Connect() Fails, WSAGetLastError() returns WSAENETUNREACH

Article ID: 140014

Article Last Modified on 3/8/1999

Microsoft Win32 Software Development Kit (SDK) 3.51

This article was previously published under Q140014

SYMPTOMS

A Win32 Winsock client issues a connect() call over SPX or SPXII protocols and the call fails with SOCKET_ERROR with WSAGetLastError() returning error WSAENETUNREACH(10051).

CAUSE

Either the IPX network number specified in the SOCKADDR_IPX address structure for the server is incorrect (network unreachable), or the server is not listening on the specified socket number.

STATUS

This behavior is by design.

MORE INFORMATION

If a Win32 Winsock clients issues a connect() call over TCP/IP protocol for a server and the server is not listening on the specified port, connect() returns SOCKET_ERROR and WSAGetLastError() returns error WSAECONNREFUSED(10061). However, the IPX/SPX implementation of Windows sockets on the Windows NT platform returns error WSAENETUNREACH for the same scenario.

Keywords: kbwinsock kbapi kbnetwork kbprb KB140014