This routine is part of the XTI interfaces which evolved from the TLI interfaces. XTI represents the future evolution of these interfaces. However, TLI interfaces are
supported for compatibility. When using a TLI routine that has the same name as an XTI routine, the tiuser.h header file must be used. Refer to the TLI COMPATIBILITY section for
a description of differences between the two interfaces.
This function enables a calling transport user to determine the status of a previously sent connection request and is used in conjunction with t_connect(3NSL) to establish a connection
in asynchronous mode, and to complete a synchronous t_connect(3NSL) call that was interrupted by a signal. The connection will be established on successful completion of this function.
The argument fd identifies the local transport endpoint where communication will be established, and call contains information associated with the newly established connection. The argument call points to a t_call structure which contains the following members:
In call, addr returns the protocol address associated with the responding transport endpoint, opt presents any options associated with the connection, udata points to optional
user data that may be returned by the destination transport user during connection establishment, and sequence has no meaning for this function.
struct netbuf addr;
struct netbuf opt;
struct netbuf udata;
The maxlen field of each argument must be set before issuing this function to indicate the maximum size of the buffer for each. However, maxlen can be set to zero, in which case no information to this specific argument is given to the user on
the return from t_rcvconnect(). If call is set to NULL, no information at all is returned. By default, t_rcvconnect() executes in synchronous mode and waits for the connection to be established before returning.
On return, the addr, opt and udata fields reflect values associated with the connection.
If O_NONBLOCK is set by means of t_open(3NSL) or fcntl(2), t_rcvconnect() executes in asynchronous mode, and reduces to a poll for existing connection confirmations. If none are available, t_rcvconnect() fails and returns immediately without waiting for the connection to be
established. See TNODATA below. In this case, t_rcvconnect() must be called again to complete the connection establishment phase and retrieve the information returned in call.