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t_getinfo.3 (2010 09)

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t_getinfo(3) t_getinfo(3)
NAME
t_getinfo() - get protocol-specific service information
SYNOPSIS
#include <xti.h> /* for X/OPEN Transport Interface - XTI */
/* or */
#include <tiuser.h> /* for Transport Layer Interface - TLI */
int t_getinfo (fd, info);
int fd;
struct info *info;
DESCRIPTION
The t_getinfo() function returns the current characteristics of the underlying transport protocol
associated with file descriptor fd. The info structure is used to return the same information returned by
t_open(). This function enables a transport user to access this information during any phase of com-
munication.
This argument points to a
t_info structure which contains the following members:
t_scalar_t addr; /* max size of the transport protocol address */
t_scalar_t options; /* max number of bytes of protocol-specific options */
t_scalar_t tsdu; /* max size of a transport service data unit,TSDU */
t_scalar_t etsdu; /* max size of expedited transport service data unit,ETSDU */
t_scalar_t connect; /* max data allowed on connection establishment functions */
t_scalar_t discon; /* max data allowed on t_snddis and t_rcvdis functions */
t_scalar_t servtype; /* service type supported by the transport provider */
t_scalar_t flags; /* other info about the transport provider */
The values of the fields have the following meanings:
addr A value greater than or equal to zero indicates the maximum size of a transport proto-
col address.
A value of −1 specifies that there is no limit on the address size.
A value of −2 specifies that the transport provider does not provide user access to tran-
sport protocol addresses.
options A value greater than or equal to zero indicates the maximum number of bytes of
protocol-specific options supported by the provider.
A value of −1 specifies that there is no limit on the option size.
A value of − 2 specifies that the transport provider does not support user-settable
options.
tsdu A value greater than zero specifies the maximum size of a transport service data unit
(TSDU)
A value of zero specifies that the transport provider does not support the concept of
TSDU although it does support the sending of a data stream with no logical boundaries
preserved across a connection.
A value of −1 specifies that there is no limit on the size of a TSDU.
A value of −2 specifies that the transfer of normal data is not supported by the tran-
sport provider.
etsdu A value greater than zero specifies the maximum size of an expedited transport service
data unit (ETSDU).
A value of zero specifies that the transport provider does not support the concept of
ETSDU although it does support the sending of an expedited data stream with no logi-
cal boundaries preserved across a connection.
A value of −1 specifies that there is no limit on the size of an ETSDU.
A value of −2 specifies that the transfer of expedited data is not supported by the tran-
sport provider.
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1

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