Determining the Status of One or More Sockets (Windows Embedded CE 6.0)
1/6/2010
You can use the select function to determine the status of one or more sockets in a set. For each socket, the caller can request information on read, write, or error status. The fd_set structure indicates a set of sockets.
Winsock allows an application to use more than one service provider, but the select function is limited to a set of sockets associated with a single service provider. This limitation does not restrict an application from having multiple sockets open through multiple providers.