t_getprotaddr(3)t_getprotaddr(3)NAMEt_getprotaddr - Get the protocol address
SYNOPSIS
#include <xti.h>
int t_getprotaddr(
int fd,
struct t_bind *boundaddr,
struct t_bind *peeraddr );
LIBRARY
XTI Library (libxti.a)
STANDARDS
Interfaces documented on this reference page conform to industry stan‐
dards as follows:
t_getprotaddr(): XNS4.0, XNS5.0
Refer to the standards(5) reference page for more information about
industry standards and associated tags.
PARAMETERS
The following table summarizes the relevance of input and output param‐
eters before and after t_getprotaddr() is called:
───────────────────────────────────────────────
Parameters Before Call After Call
───────────────────────────────────────────────
fd y n
boundaddr->maxlen y n
boundaddr->addr.len n y
boundaddr->addr.buf o (o)
boundaddr->qlen n n
peeraddr->maxlen y n
peeraddr->addr.len n y
peeraddr->addr.buf o (o)
peeraddr->qlen n n
───────────────────────────────────────────────
Table Notes: This is a meaningful parameter. The content of the object
pointed to by y is meaningful. This is a meaningful but optional
parameter. The content of the object pointed to by o is meaningful.
This is not a meaningful parameter.
Specifies a file descriptor returned by the t_open() function that
identifies the transport endpoint through which data is sent. Speci‐
fies the location to hold the local address, if any, currently bound to
fd. It points to a structure of type t_bind, with the following
fields: The maximum size of the address buffer. Points to the buffer
where the address is to be placed. In return, the buf field of bound‐
addr points to the address, if any, that is currently bound to fd.
Specifies the length of the address. If the transport endpoint is in
the T_UNBND state, zero is returned in the len field. Specifies the
location to hold the remote address, if any, that is currently con‐
nected to fd. It points to a structure of the type t_bind, with the
following fields: The maximum size of the address buffer. Points to
the buffer where the address is to be placed. The buf field of peeraddr
points to the address, if any, currently connected to fd. Specifies
the length of the address. If the transport endpoint is not in the
T_DATAXFER state, zero is returned in this field.
DESCRIPTION
The t_getprotaddr() function returns local and remote protocol
addresses currently associated with the transport endpoint specified by
fd.
RETURN VALUES
Upon successful completion, a value of zero is returned. If the trans‐
port endpoint is in the T_UNBND state, zero is returned in the len
field of boundaddr (boundaddr->addr.len).
If the transport endpoint is not in the T_DATAXFER state, then zero is
returned in the len field of peeraddr (peeraddr->addr.len = 0). On
failure, a value of -1 is returned and t_errno is set to indicate the
error.
ERRORS
If the t_getprotaddr() function fails, t_errno may be set to one of the
following values: The specified file descriptor does note refer to a
transport endpoint. The number of bytes allocated for an incoming
argument (maxlen) is greater than zero but not sufficient to store the
value of that argument. A system error has occurred during execution
of this function. This error indicates that a communication problem
has been detected between XTI and the transport provider for which
there is no other suitable XTI(t_errno).
VALID STATES
The t_getprotaddr() function can be called in all the transport
provider states, except T_UNINIT.
SEE ALSO
Functions: t_bind(3)
Standards: standards(5)
Network Programmer's Guide
t_getprotaddr(3)
