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WSAHtonl

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

int WSAHtonl(
  SOCKET s,
  u_long hostlong,
  u_long FAR* lpnetlong
);

Parameters

  • s
    [in] Descriptor identifying a socket.
  • hostlong
    [in] 32-bit number in host byte order.
  • lpnetlong
    [out] Pointer to a 32-bit number in network 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 lpnetlong parameter is not completely contained in a valid part of the user address space.

Remarks

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

Requirements

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

See Also

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

 Last updated on Saturday, April 10, 2004

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