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<a href=" https://wiki.asterisk.org/wiki/display/~jcolp " style="color:#326ca6;text-decoration:none;; color: #326ca6; text-decoration: none">Joshua Colp</a> edited the page:
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<td valign="top" style="font-size: 13px"> <h2 id="email-title-heading" style="font-size: 16px; line-height: 20px; min-height: 20px; margin: 0; padding: 0"> <a href="https://wiki.asterisk.org/wiki/display/AST/Writing+a+SIP+Session+Supplement" style="color: #326ca6; text-decoration: none"> <img class="icon" src="cid:page-icon" alt="" style="border: 0; padding: 0 5px 0 0; text-align: left; vertical-align: middle" /> <strong style="font-size:16px;line-height:20px;vertical-align:top;">Writing a SIP Session Supplement</strong> </a> </h2> </td>
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<td style="background-color: #fafafa; padding: 0 0 0 5px; font-size: 12px; text-align: left;; font-size: 13px">res_pjsip_auto_answer.c</td>
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<td class="diff-macro-body" style="background-color: #fff;border: 1px solid #dddddd;padding: 10px;; font-size: 13px"> <pre style="font-size: 13px">#include "asterisk.h"
#include <pjsip.h>
#include <pjsip_ua.h>
#include <pjlib.h>
#include "asterisk/res_pjsip.h"
#include "asterisk/res_pjsip_session.h"
#include "asterisk/module.h"
#include "asterisk/pbx.h"
/*** MODULEINFO
<depend>pjproject</depend>
<depend>res_pjsip</depend>
<depend>res_pjsip_session</depend>
***/
static void auto_answer_outgoing_request(struct ast_sip_session *session, pjsip_tx_data *tdata)
{
static const pj_str_t answer_mode_name = { "Answer-Mode", 11 };
static const pj_str_t answer_mode_value = { "auto", 4 };
static const pj_str_t require_value = { "answermode", 10 };
pjsip_generic_string_hdr *answer_mode;
pjsip_require_hdr *require;
int add_auto_answer;
if (session->inv_session->state >= PJSIP_INV_<span class="diff-html-added" id="added-diff-0" style="font-size: 100%; background-color: #ddfade;">STATE_</span>CONFIRMED) {
return;
}
ast_channel_lock(session->channel);
add_auto_answer = ast_true(pbx_builtin_getvar_helper(session->channel, "SIP_AUTO_ANSWER"));
ast_channel_unlock(session->channel);
if (!add_auto_answer) {
return;
}
/* Let's add the require header. There could already be a require header present in the
* request. If so, then we just need to add "answermode" to the list of requirements. Otherwise,
* we need to create a require header and add "answermode" to it.
*/
require = pjsip_msg_find_hdr(tdata->msg, PJSIP_H_REQUIRE, NULL);
if (!require) {
require = pjsip_require_hdr_create(tdata->pool);
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr *) require);
}
pj_strdup(tdata->pool, &require->values[require->count++], &require_value);
/* Now we can add the Answer-Mode header. This is easier since nothing else should be adding this
* header to the message before we get it.
*/
answer_mode = pjsip_generic_string_hdr_create(tdata->pool, &answer_mode_name, &answer_mode_value);
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr *) answer_mode);
}
static struct ast_sip_session_supplement auto_answer_supplement = {
.method = "INVITE",
.outgoing_request = auto_answer_outgoing_request,
};
static int load_module(void)
{
if (ast_sip_session_register_supplement(&auto_answer_supplement)) {
return AST_MODULE_LOAD_DECLINE;
}
return AST_MODULE_LOAD_SUCCESS;
}
static int unload_module(void)
{
ast_sip_session_unregister_supplement(&auto_answer_supplement);
return 0;
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "SIP Auto Answer Support",
.load = load_module,
.unload = unload_module,
.load_pri = AST_MODPRI_APP_DEPEND,
);
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<td class="left" valign="top" style="font-size: 13px; padding-top: 8px; max-width: 45%; text-align: left"> <span class="email-list-item"><a href="https://wiki.asterisk.org/wiki/display/AST/Writing+a+SIP+Session+Supplement" style="color: #326ca6; text-decoration: none">View Online</a> </span> <span class="email-list-divider" style="color: #505050; padding: 0 0.350em">·</span> <span class="email-list-item"><a href="https://wiki.asterisk.org/wiki/plugins/likes/like.action?contentId=22773976" style="color: #326ca6; text-decoration: none">Like</a> </span> <span class="email-list-divider" style="color: #505050; padding: 0 0.350em">·</span> <span class="email-list-item"><a href="https://wiki.asterisk.org/wiki/pages/diffpagesbyversion.action?pageId=22773976&revisedVersion=5&originalVersion=4" style="color: #326ca6; text-decoration: none">View Changes</a> </span> <span class="email-list-divider" style="color: #505050; padding: 0 0.350em">·</span> <span class="email-list-item"><a href="https://wiki.asterisk.org/wiki/display/AST/Writing+a+SIP+Session+Supplement?showComments=true&showCommentArea=true#addcomment" style="color: #326ca6; text-decoration: none">Add Comment</a> </span> </td>
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