static void
google_session_send_candidates(PurpleMedia *media, gchar *session_id,
gchar *participant, GoogleSession *session)
{
PurpleMedia *session_media =
((GoogleAVSessionData *) session->session_data)->media;
GList *candidates =
purple_media_get_local_candidates(session_media, session_id,
session->remote_jid);
GList *iter;
PurpleMediaCandidate *transport;
gboolean video = FALSE;
if (!strcmp(session_id, "google-video"))
video = TRUE;
for (iter = candidates; iter; iter = iter->next) {
JabberIq *iq;
gchar *ip, *port, *username, *password;
gchar pref[16];
PurpleMediaCandidateType type;
xmlnode *sess;
xmlnode *candidate;
guint component_id;
transport = PURPLE_MEDIA_CANDIDATE(iter->data);
component_id = purple_media_candidate_get_component_id(
transport);
iq = jabber_iq_new(session->js, JABBER_IQ_SET);
sess = google_session_create_xmlnode(session, "candidates");
xmlnode_insert_child(iq->node, sess);
xmlnode_set_attrib(iq->node, "to", session->remote_jid);
candidate = xmlnode_new("candidate");
ip = purple_media_candidate_get_ip(transport);
port = g_strdup_printf("%d",
purple_media_candidate_get_port(transport));
g_ascii_dtostr(pref, 16,
purple_media_candidate_get_priority(transport) / 1000.0);
username = purple_media_candidate_get_username(transport);
password = purple_media_candidate_get_password(transport);
type = purple_media_candidate_get_candidate_type(transport);
xmlnode_set_attrib(candidate, "address", ip);
xmlnode_set_attrib(candidate, "port", port);
xmlnode_set_attrib(candidate, "name",
component_id == PURPLE_MEDIA_COMPONENT_RTP ?
video ? "video_rtp" : "rtp" :
component_id == PURPLE_MEDIA_COMPONENT_RTCP ?
video ? "video_rtcp" : "rtcp" : "none");
xmlnode_set_attrib(candidate, "username", username);
/*
* As of this writing, Farsight 2 in Google compatibility
* mode doesn't provide a password. The Gmail client
* requires this to be set.
*/
xmlnode_set_attrib(candidate, "password",
password != NULL ? password : "");
xmlnode_set_attrib(candidate, "preference", pref);
xmlnode_set_attrib(candidate, "protocol",
purple_media_candidate_get_protocol(transport)
== PURPLE_MEDIA_NETWORK_PROTOCOL_UDP ?
"udp" : "tcp");
xmlnode_set_attrib(candidate, "type", type ==
PURPLE_MEDIA_CANDIDATE_TYPE_HOST ? "local" :
type ==
PURPLE_MEDIA_CANDIDATE_TYPE_SRFLX ? "stun" :
type ==
PURPLE_MEDIA_CANDIDATE_TYPE_RELAY ? "relay" :
NULL);
xmlnode_set_attrib(candidate, "generation", "0");
xmlnode_set_attrib(candidate, "network", "0");
xmlnode_insert_child(sess, candidate);
g_free(ip);
g_free(port);
g_free(username);
g_free(password);
jabber_iq_send(iq);
}
purple_media_candidate_list_free(candidates);
}
/* callback called when a pair of transport candidates (local and remote)
* has been established */
static void
purple_media_candidate_pair_established_cb(PurpleMediaBackend *backend,
const gchar *sess_id, const gchar *name,
PurpleMediaCandidate *local_candidate,
PurpleMediaCandidate *remote_candidate,
PurpleMedia *media)
{
PurpleMediaStream *stream;
GList *iter;
guint id;
g_return_if_fail(PURPLE_IS_MEDIA(media));
stream = purple_media_get_stream(media, sess_id, name);
id = purple_media_candidate_get_component_id(local_candidate);
iter = stream->active_local_candidates;
for(; iter; iter = g_list_next(iter)) {
PurpleMediaCandidate *c = iter->data;
if (id == purple_media_candidate_get_component_id(c)) {
g_object_unref(c);
stream->active_local_candidates =
g_list_delete_link(iter, iter);
stream->active_local_candidates = g_list_prepend(
stream->active_local_candidates,
purple_media_candidate_copy(
local_candidate));
break;
}
}
if (iter == NULL)
stream->active_local_candidates = g_list_prepend(
stream->active_local_candidates,
purple_media_candidate_copy(
local_candidate));
id = purple_media_candidate_get_component_id(local_candidate);
iter = stream->active_remote_candidates;
for(; iter; iter = g_list_next(iter)) {
PurpleMediaCandidate *c = iter->data;
if (id == purple_media_candidate_get_component_id(c)) {
g_object_unref(c);
stream->active_remote_candidates =
g_list_delete_link(iter, iter);
stream->active_remote_candidates = g_list_prepend(
stream->active_remote_candidates,
purple_media_candidate_copy(
remote_candidate));
break;
}
}
if (iter == NULL)
stream->active_remote_candidates = g_list_prepend(
stream->active_remote_candidates,
purple_media_candidate_copy(
remote_candidate));
g_signal_emit(media, purple_media_signals[CANDIDATE_PAIR_ESTABLISHED],
0, sess_id, name, local_candidate, remote_candidate);
purple_debug_info("media", "candidate pair established\n");
}
