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cc [ flag ... ] file ... -lsip [ library ... ] #include <sip.h> const struct sip_xaction *sip_get_trans(sip_msg_t sip_msg, int which, int *error);
The sip_get_trans() transaction for the SIP message sip_msg. A transaction is not freed if there are any references on it.
The transaction type should be specified as one of the following:
SIP_CLIENT_TRANSACTON - lookup a client transaction
SIP_SERVER_TRANSACTON - lookup a server transaction
The sip_get_trans() function matches a transaction to a message as specified in RFC 3261, sections 17.1.3 and 17.2.3. The sip_get_trans() function holds a reference to the returned transaction. The caller must release this reference after use.
The sip_get_trans() function returns the required value on success or NULL on failure.
The value of errno is not changed by these calls in the event of an error.
On success, the value of the location pointed to by error is set to 0.
See attributes(7) for descriptions of the following attributes:
| ATTRIBUTE TYPE ATTRIBUTE VALUE |
| Interface Stability Committed |
| MT-Level MT-Safe |
libsip (3LIB)