Upgrade to Microsoft Edge to send valentine gifts online advantage of the latest features, security updates, and technical support. A descriptor identifying a connected socket. A pointer to a buffer containing the data to be transmitted. The length, in bytes, of the data in buffer pointed to by the buf parameter.

A set of flags that specify the way in which the call is made. This parameter is constructed by using the bitwise OR operator with any of the following values. Specifies that the data should not be subject to routing. A Windows Sockets service provider can choose to ignore this flag. A successful WSAStartup call must occur before using this function. The requested address is a broadcast address, but the appropriate flag was not set.

Call setsockopt with the SO_BROADCAST socket option to enable use of the broadcast address. 1 call is in progress, or the service provider is still processing a callback function. The buf parameter is not completely contained in a valid part of the user address space. The connection has been broken due to the keep-alive activity detecting a failure while the operation was in progress. The descriptor is not a socket.