wpa_ctrl_get_fd()

Arguments:

ctrl

Control connection data from wpa_ctrl_open()

Library:

Description:

This function gets the file descriptor for the control connection, assuming this connection uses a socket for IPC between the library and underlying service. The returned value can be used with the select() C Library function while waiting for multiple events.

The returned file descriptor must not be used for sending or receiving packets; instead, the library functions wpa_ctrl_request() and wpa_ctrl_recv() must be used for this.

Returns:

The file descriptor of the socket underlying the control connection, or -1 if the connection doesn't use a socket