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sip_get_trans_method, sip_get_trans_state, sip_get_trans_orig_msg, sip_get_trans_conn_obj, sip_get_trans_resp_msg, sip_get_trans_branchid - get transaction attributes

cc [ flag ... ] file ... -lsip [ library ... ]
#include <sip.h>

sip_method_t sip_get_trans_method(sip_transaction_t sip_trans,
 int *error);

int sip_get_trans_state(sip_transaction_t trans, int *error);

const struct sip_message *sip_get_trans_orig_msg
 (sip_transaction_t sip_trans, int *error);

const struct sip_message *sip_get_trans_resp_msg
 (sip_transaction_t sip_trans, int *error);

const struct sip_conn_object *sip_get_trans_conn_obj
 (sip_transaction_t sip_trans, int *error);

char *sip_get_trans_branchid(sip_transaction_t trans, int *error);

The sip_get_trans_method() function returns the method the SIP message that created the transaction sip_trans.

The sip_get_trans_state() function returns the state of the transaction sip_trans.

A newly created transaction is in the state:

SIP_NEW_TRANSACTION

A client transaction could be in one of the following states:

SIP_CLNT_CALLING

SIP_CLNT_INV_PROCEEDING

SIP_CLNT_INV_TERMINATED

SIP_CLNT_INV_COMPLETED

SIP_CLNT_TRYING

SIP_CLNT_NONINV_PROCEEDING

SIP_CLNT_NONINV_TERMINATED

SIP_CLNT_NONINV_COMPLETED

A server transaction could be in one of the following states:

SIP_SRV_INV_PROCEEDING

SIP_SRV_INV_COMPLETED

SIP_SRV_CONFIRMED

SIP_SRV_INV_TERMINATED

SIP_SRV_TRYING

SIP_SRV_NONINV_PROCEEDING

SIP_SRV_NONINV_COMPLETED

SIP_SRV_NONINV_TERMINATED

The sip_get_trans_orig_msg() function returns the message that created the transaction sip_trans. This could be a request on the client or a response on the server.

The sip_get_trans_resp_msg() function returns the last response that was sent on the transaction sip_trans. Typically, this response is used by the transaction layer for retransmissions for unreliable transports or for responding to retransmitted requests. A response that terminates a transaction is not returned.

The sip_get_trans_conn_obj() function returns the cached connection object, if any, in the transactionsip_trans.

The sip_get_trans_branchid() function returns the branch ID for the message that created the transactionsip_trans. The caller is responsible for freeing the returned string.

The sip_get_trans_orig_msg(), sip_get_trans_resp_msg(), sip_get_trans_conn_obj(), and sip_get_trans_branchid() functions return the required value on success or NULL on failure.

The sip_get_trans_state() and sip_get_trans_method() functions return the required value on success and -1 on failure.

The value of errno is not changed by these calls in the event of an error.

If the error is non-null, one of the following values is set: EINVAL

ENOMEM

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)