t_rcvconnect(3xti)t_rcvconnect(3xti)Namet_rcvconnect - receive the confirmation from a connect request
Syntax
#include <xti.h>
int t_rcvconnect(fd, call)
int fd;
struct t_call *call;
Arguments
fd Identifies the local transport endpoint where communications
is established.
call Contains information associated with the newly established
connection. Call points to a t_call structure that contains
the following members:
struct netbuf addr;
struct netbuf opt;
struct netbuf udata;
int sequence;
The members of the t_call structure have the following mean‐
ings:
addr Returns the protocol address associated with the
responding transport endpoint.
opt Presents any protocol-specific information asso‐
ciated with the transport endpoint.
udata Points to any optional user data that may be
returned by the destination transport user during
connection establishment.
sequence Has no meaning for this function.
Description
This function enables a calling transport user to determine the status
of a previously sent connect request. Is used in conjunction with to
establish a connection in asynchronous mode. The connection is estab‐
lished on successful completion of this function.
The maxlen field of each argument must be set before issuing this func‐
tion to indicate the maximum size of the buffer for each. However, call
can be NULL, in which case no information is given to the user on
return from By default, 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.
──────────────────────────────────────────────
Parameters Before Call After Call
──────────────────────────────────────────────
fd x /
call->addr.maxlen x /
call->addr.len / x
call->addr.buf x (x)
call->opt.maxlen x /
call->opt.len / x
call->opt.buf x (x)
call->udata.maxlen x /
call->udata.len / x
call->udata.buf x (?)
call->sequence / /
──────────────────────────────────────────────
If O_NONBLOCK is set by means of or executes in asynchronous mode and
reduces to a poll for existing connect confirmations. If none is avail‐
able, fails and returns immediately without waiting for the connection
to be established. The function must be reissued at a later time to
complete the connection establishment phase and retrieve the informa‐
tion returned to call.
Return Values
Upon successful completion, a value of 0 is returned. On failure, a
value of -1 is returned, and t_errno is set to indicate the error.
Diagnostics
On failure, is set to one of the following:
[TBADF] The specified file descriptor does not refer to a
transport endpoint.
[TBUFOVFLW] The number of bytes allocated for an incoming argu‐
ment is not sufficient to store the value of that
argument. The connect information to be returned in
call is discarded. The provider's state, as seen by
the user, is changed to DATAXFER.
[TNODATA] O_NONBLOCK was set, but a connect confirmation has
not yet arrived.
[TLOOK] An asynchronous event has occurred on the transport
connection and requires immediate attention.
[TNOTSUPPORT] This function is not supported by the underlying
transport provider.
[TOUTSTATE] The function was issued in the wrong sequence on
the transport endpoint referenced by fd.
[TSYSERR] A system error has occurred during execution of
this function.
See Alsot_accept(3xti), t_alloc(3xti), t_bind(3xti), t_connect(3xti), t_lis‐
ten(3xti), t_open(3xti), t_optmgmt(3xti)t_rcvconnect(3xti)
