1sip_add_param(3SIPS)ession Initiation Protocol Library Functiosnisp_add_param(3SIP)
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6 sip_add_param - add a parameter to the SIP header
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9 cc [ flag ... ] file ... -lsip [ library ... ]
10 #include <sip.h>
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12 sip_header_t sip_add_param(sip_header_t sip_header, char *param,
13 int *error);
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17 The sip_add_param() function adds the parameter provided in param to
18 the SIP header sip_header. The function returns the header with the
19 parameter added. A new header is created as a result of adding the
20 parameter and the old header is marked deleted. Applications with mul‐
21 tiple threads working on the same SIP header need to take note of this.
22 If error is non-null, it (the location pointer by the variable) is set
23 to 0 on success and the appropriate error value on error.
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26 The sip_add_param() function returns the new header on success and null
27 on failure. Further, if error is non-null, then on success the value in
28 the location pointed by error is 0 and the appropriate error value on
29 failure.
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32 On failure, functions that return an error value may return one of the
33 following:
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35 EINVAL Mandatory parameters are not provided, i.e. null.
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37 For sip_add_param(), the header to be modified is marked
38 deleted.
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41 EPERM The message cannot be modified.
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44 ENOMEM There is an error allocating memory for creating head‐
45 ers/parameters.
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49 See attributes(5) for descriptions of the following attributes:
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54 ┌─────────────────────────────┬─────────────────────────────┐
55 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
56 ├─────────────────────────────┼─────────────────────────────┤
57 │Interface Stability │Committed │
58 ├─────────────────────────────┼─────────────────────────────┤
59 │MT-Level │MT-Safe │
60 └─────────────────────────────┴─────────────────────────────┘
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63 libsip(3LIB)
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67SunOS 5.11 25 Jan 2007 sip_add_param(3SIP)