t_sndrel(3nsl)

1t_sndrel(3NSL)       Networking Services Library Functions      t_sndrel(3NSL)
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NAME

6       t_sndrel - initiate an orderly release
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SYNOPSIS

9       #include <xti.h>
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13       int t_sndrel(int fd);
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DESCRIPTION

17       This  routine  is part of the XTI interfaces which evolved from the TLI
18       interfaces. XTI represents the future evolution  of  these  interfaces.
19       However,  TLI  interfaces are supported for compatibility. When using a
20       TLI routine that has the same name as an  XTI  routine,  the   tiuser.h
21       header  file must be used.  Refer to the  TLI COMPATIBILITY section for
22       a description of differences between the two interfaces.
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25       For transport providers of type  T_COTS_ORD, this function is  used  to
26       initiate  an orderly release of the outgoing direction of data transfer
27       and indicates to the transport provider that the transport user has  no
28       more  data to send. The argument fd identifies the local transport end‐
29       point where the connection exists. After calling t_sndrel(),  the  user
30       may  not  send  any  more data over the connection. However, a user may
31       continue to receive data if an orderly release indication has not  been
32       received. For transport providers of types other than  T_COTS_ORD, this
33       function fails with error TNOTSUPPORT.
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RETURN VALUES

36       Upon successful completion, a value of  0 is  returned.   Otherwise,  a
37       value of  -1 is returned and t_errno is set to indicate an error.
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VALID STATES

40       T_DATAXFER, T_INREL.
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ERRORS

43       On failure, t_errno is set to one of the following:
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45       TBADF          The specified file descriptor does not refer to a trans‐
46                      port endpoint.
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49       TFLOW          O_NONBLOCK was set, but the flow control mechanism  pre‐
50                      vented  the  transport provider from accepting the func‐
51                      tion at this time.
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54       TLOOK          An asynchronous event has  occurred  on  this  transport
55                      endpoint and requires immediate attention.
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58       TNOTSUPPORT    This  function is not supported by the underlying trans‐
59                      port provider.
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62       TOUTSTATE      The communications endpoint referenced by  fd is not  in
63                      one  of  the  states in which a call to this function is
64                      valid.
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67       TPROTO         This error indicates that a  communication  problem  has
68                      been detected between XTI and the transport provider for
69                      which there is no other suitable XTI error (t_errno).
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72       TSYSERR        A system error has occurred  during  execution  of  this
73                      function.
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TLI COMPATIBILITY

77       The XTI and TLI interface definitions have common names but use differ‐
78       ent header files. This, and other semantic differences between the  two
79       interfaces are described in the subsections below.
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81   Interface Header
82       The  XTI  interfaces  use the header file, xti.h. TLI interfaces should
83       not use this header.  They should use the header:
84         #include <tiuser.h>
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86   Error Description Values
87       The t_errno values that can be set by the XTI interface and  cannot  be
88       set by the TLI interface are:
89         TPROTO
90         TLOOK
91         TOUTSTATE
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93   Notes
94       Whenever this function fails with t_error set to TFLOW, O_NONBLOCK must
95       have been set.
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ATTRIBUTES

98       See attributes(5)  for descriptions of the following attributes:
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103       ┌─────────────────────────────┬─────────────────────────────┐
104       │      ATTRIBUTE TYPE         │      ATTRIBUTE VALUE        │
105       ├─────────────────────────────┼─────────────────────────────┤
106       │MT Level                     │Safe                         │
107       └─────────────────────────────┴─────────────────────────────┘
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