WSANtohl (Windows CE 5.0)

Windows CE 5.0
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This function converts a u_long from network byte order to host byte order.

int WSANtohl(
  u_long netlong,
  u_long FAR* lphostlong


[in] Descriptor identifying a socket.
[in] 32-bit number in network byte order.
[out] Pointer to a 32-bit number in host byte order.

Return Values

If no error occurs, this function returns zero. If an error occurs, a value of SOCKET_ERROR is returned, and a specific error code can be retrieved by calling the WSAGetLastError function.

The following table shows a list of possible error codes.

Error code Description
WSANOTINITIALISED A successful WSAStartup call must occur before using this function.
WSAENETDOWN The network subsystem has failed.
WSAENOTSOCK The descriptor is not a socket.
WSAEFAULT The lphostlong parameter is not completely contained in a valid part of the user address space.


This function takes a 32-bit number in the network byte order associated with socket s and returns a 32-bit number pointed to by the lphostlong parameter in host byte order.


OS Versions: Windows CE .NET 4.0 and later.
Header: Winsock2.h.
Link Library: Ws2.lib.

See Also

htonl | htons | ntohl | ntohs | WSAHtonl | WSAHtons | WSANtohs | WSAGetLastError | WSAStartup

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