1sip_sendmsg(3SIP)Session Initiation Protocol Library Functionssip_sendmsg(3SIP)
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NAME

6       sip_sendmsg  -  send  an outbound SIP message to the SIP stack for pro‐
7       cessing
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SYNOPSIS

10       cc [ flag ... ] file ... -lsip [ library ... ]
11       #include <sip.h>
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13       int sip_sendmsg(sip_conn_object_t obj, sip_msg_t sip_msg,
14            sip_dialog_t dialog, uint32_t flags);
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DESCRIPTION

18       The sip_sendmsg() function is used to  send  an  outbound  SIP  message
19       sip_msg  to the SIP stack on its way to the peer. The connection object
20       for the SIP message is passed as obj. The caller also provides the dia‐
21       log  associated  with the message, if one exists. The value of flags is
22       the result of ORing the following, as required:
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24       SIP_SEND_STATEFUL     Send the request  or  response  statefully.  This
25                             results  in  the stack creating and maintaining a
26                             transaction for this  request/response.  If  this
27                             flag  is not set transactions are not created for
28                             the request/response.
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31       SIP_DIALOG_ON_FORK    When this flag is set, the stack may create  mul‐
32                             tiple  dialogs  for a dialog completing response.
33                             This may result due to forking of the dialog cre‐
34                             ating request. If this flag is not set, the first
35                             response to a dialog creating request  creates  a
36                             dialog,  but  subsequent  ones do not. It is only
37                             meaningful if the stack is configured to maintain
38                             dialogs.
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RETURN VALUES

42       The  sip_sendmsg()  function  returns  0 on success and the appropriate
43       error on failure.
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46       The value of errno is not changed by these calls in  the  event  of  an
47       error.
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ERRORS

50       The  sip_sendmsg()  function  can return one of the following errors on
51       failure:
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53       EINVAL    If a message is being statefully sent and the branchid in the
54                 VIA  header  does  not  conform to RFC 3261 or when accessing
55                 CSEQ header while creating a transaction.
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58       ENOENT    If a message is being statefully sent, error getting the CSEQ
59                 header while creating a transaction.
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62       EPROTO    If a message is being statefully sent, error getting the CSEQ
63                 value while creating a transaction.
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66       ENOMEM    If the message is being  statefully  sent,  error  allocating
67                 memory  for creating or adding a transaction or during trans‐
68                 action related processing.
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ATTRIBUTES

72       See attributes(5) for descriptions of the following attributes:
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77       ┌─────────────────────────────┬─────────────────────────────┐
78       │      ATTRIBUTE TYPE         │      ATTRIBUTE VALUE        │
79       ├─────────────────────────────┼─────────────────────────────┤
80       │Interface Stability          │Committed                    │
81       ├─────────────────────────────┼─────────────────────────────┤
82       │MT-Level                     │MT-Safe                      │
83       └─────────────────────────────┴─────────────────────────────┘
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SEE ALSO

86       libsip(3LIB)
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90SunOS 5.11                        25 Jan 2007                sip_sendmsg(3SIP)
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