static int cand_add(struct flow *flow, struct json_object *jcand)
{
const char *mid = jzon_str(jcand, "sdp_mid");
const char *rcand = jzon_str(jcand, "sdp");
int idx;
int err;
err = jzon_int(&idx, jcand, "sdp_mline_index");
if (err)
return err;
debug("cand_add: mid=%s idx=%d sdp=%s\n", mid, idx, rcand);
if (flow->got_sdp) {
struct mediaflow *mf = userflow_mediaflow(flow->userflow);
return mediaflow_add_rcand(mf, rcand, mid, idx);
}
else {
struct cand *cand = mem_zalloc(sizeof(*cand), cand_destructor);
if (!cand)
return ENOMEM;
str_ncpy(cand->sdp, rcand, sizeof(cand->sdp));
str_ncpy(cand->mid, mid, sizeof(cand->mid));
cand->idx = idx;
list_append(&flow->pendingl, &cand->le, cand);
return 0;
}
}
int zapi_connection_decode(struct json_object *jobj,
struct zapi_connection *conn)
{
if (!jobj || !conn)
return EINVAL;
conn->status = jzon_str(jobj, "status");
conn->conversation = jzon_str(jobj, "conversation");
conn->to = jzon_str(jobj, "to");
conn->from = jzon_str(jobj, "from");
conn->last_update = jzon_str(jobj, "last_update");
conn->message = jzon_str(jobj, "message");
return 0;
}
int flow_sdp_handler(struct flow *flow, struct json_object *jobj, bool replayed)
{
struct mediaflow *mf;
const char *sdp;
const char *state;
bool strm_chg = false;
bool isoffer;
int err = 0;
if (!flow || !jobj) {
return EINVAL;
}
sdp = jzon_str(jobj, "sdp");
state = jzon_str(jobj, "state");
isoffer = streq(state, "offer");
mf = userflow_mediaflow(flow->userflow);
debug("flow_sdp_handler(%p): state=%s uf=%p mf=%p\n",
flow, state, flow->userflow, mf);
if (mf && mediaflow_sdp_is_complete(mf)) {
if (replayed)
return 0;
strm_chg = strstr(sdp, "x-streamchange") != NULL;
if (strm_chg) {
info("flow_sdp_handler: x-streamchange\n");
mediaflow_stop_media(mf);
mediaflow_sdpstate_reset(mf);
mediaflow_reset_media(mf);
}
else if (isoffer) {
info("flow_sdp_handler: SDP re-offer detected.\n");
flow_restart(flow);
}
else {
warning("flow_sdp_handler: SDP already complete");
return 0;
}
}
if (isoffer) {
err = userflow_accept(flow->userflow, sdp);
if (strm_chg) {
mediaflow_start_media(mf);
}
}
else if (streq(state, "answer")) {
err = userflow_update(flow->userflow, sdp);
}
else {
warning("flowmgr: flow_sdp_handler: unknown state: %s\n",
state);
err = EINVAL;
}
flow->got_sdp = true;
/* flush list of any pending ICE-candidates */
if (!list_isempty(&flow->pendingl)) {
struct le *le = list_head(&flow->pendingl);
info("flowmgr: got SDP - adding %u pending candidates\n",
list_count(&flow->pendingl));
while (le) {
struct cand *cand = le->data;
le = le->next;
err |= mediaflow_add_rcand(
userflow_mediaflow(flow->userflow),
cand->sdp,
cand->mid, cand->idx);
mem_deref(cand);
}
}
return err;
}
