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cc [ flag ... ] file ... -lsip [ library ... ] #include <sip.h> int sip_add_request_line(sip_msg_t sip_request, sip_method_t method, char *request_uri);
int sip_add_response_line(sip_msg_t sip_response, int response_code, char *response_phase);
The sip_add_request_line() function adds a request line to the SIP message sip_request. The request line is created using the SIP method specified in method and the URI in request_uri. The SIP method can be one of the following:
INVITE
ACK
OPTIONS
BYE
CANCEL
REGISTER
REFER
SUBSCRIBE
NOTIFY
PRACK
INFO
The resulting request line has the SIP-Version of "2.0".
The sip_add_response_line() function adds a response line to the SIP message sip_response. The response line is created using the response code response_code and the phrase in response_phrase. If the response_code is one that is listed in RFC 3261, sip_get_resp_desc() can be used to get the response phase for the response_code. The resulting response line has the SIP-Version of "2.0".
The sip_add_response_line() and sip_add_request_line() functions return 0 on success and the appropriate error value in case of failure.
The value of errno is not changed by these calls in the event of an error.
On failure, the sip_add_response_line() and sip_add_request_line() functions could return one of the following errors:
EINVAL
If mandatory input is not provided or if the input is invalid.
ENOTSUP
If the input SIP message cannot be modified.
ENOMEM
If memory allocation fails when creating the request/response line or when creating headers in the ACK request.
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Interface Stability | Committed |
| MT-Level | MT-Safe |
libsip(3LIB)