int janus_websockets_send_message(void *transport, void *request_id, gboolean admin, json_t *message) {
if(message == NULL)
return -1;
if(transport == NULL) {
json_decref(message);
return -1;
}
/* Make sure this is not related to a closed /freed WebSocket session */
janus_mutex_lock(&old_wss_mutex);
janus_websockets_client *client = (janus_websockets_client *)transport;
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
if(g_list_find(old_wss, client) != NULL || !client->wsi) {
#else
if(g_list_find(old_wss, client) != NULL || !client->context || !client->wsi) {
#endif
json_decref(message);
message = NULL;
transport = NULL;
janus_mutex_unlock(&old_wss_mutex);
return -1;
}
janus_mutex_lock(&client->mutex);
/* Convert to string and enqueue */
char *payload = json_dumps(message, json_format);
g_async_queue_push(client->messages, payload);
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
lws_callback_on_writable(client->wsi);
#else
libwebsocket_callback_on_writable(client->context, client->wsi);
#endif
janus_mutex_unlock(&client->mutex);
janus_mutex_unlock(&old_wss_mutex);
json_decref(message);
return 0;
}
void janus_websockets_session_created(void *transport, guint64 session_id) {
/* We don't care */
}
void janus_websockets_session_over(void *transport, guint64 session_id, gboolean timeout) {
if(transport == NULL || !timeout)
return;
/* We only care if it's a timeout: if so, close the connection */
janus_websockets_client *client = (janus_websockets_client *)transport;
/* Make sure this is not related to a closed WebSocket session */
janus_mutex_lock(&old_wss_mutex);
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
if(g_list_find(old_wss, client) == NULL && client->wsi){
#else
if(g_list_find(old_wss, client) == NULL && client->context && client->wsi){
#endif
janus_mutex_lock(&client->mutex);
client->session_timeout = 1;
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
lws_callback_on_writable(client->wsi);
#else
libwebsocket_callback_on_writable(client->context, client->wsi);
#endif
janus_mutex_unlock(&client->mutex);
}
janus_mutex_unlock(&old_wss_mutex);
}
/* Thread */
void *janus_websockets_thread(void *data) {
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
struct lws_context *service = (struct lws_context *)data;
#else
struct libwebsocket_context *service = (struct libwebsocket_context *)data;
#endif
if(service == NULL) {
JANUS_LOG(LOG_ERR, "Invalid service\n");
return NULL;
}
const char *type = NULL;
if(service == wss)
type = "WebSocket (Janus API)";
else if(service == swss)
type = "Secure WebSocket (Janus API)";
else if(service == admin_wss)
type = "WebSocket (Admin API)";
else if(service == admin_swss)
type = "Secure WebSocket (Admin API)";
JANUS_LOG(LOG_INFO, "%s thread started\n", type);
while(g_atomic_int_get(&initialized) && !g_atomic_int_get(&stopping)) {
/* libwebsockets is single thread, we cycle through events here */
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
lws_service(service, 50);
#else
libwebsocket_service(service, 50);
#endif
}
/* Get rid of the WebSockets server */
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
lws_cancel_service(service);
#else
libwebsocket_cancel_service(service);
#endif
/* Done */
JANUS_LOG(LOG_INFO, "%s thread ended\n", type);
return NULL;
}
/* WebSockets */
static int janus_websockets_callback_http(
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
struct lws *wsi,
enum lws_callback_reasons reason,
#else
struct libwebsocket_context *this,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason,
#endif
void *user, void *in, size_t len)
{
/* This endpoint cannot be used for HTTP */
switch(reason) {
case LWS_CALLBACK_HTTP:
JANUS_LOG(LOG_VERB, "Rejecting incoming HTTP request on WebSockets endpoint\n");
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
lws_return_http_status(wsi, 403, NULL);
#else
libwebsockets_return_http_status(this, wsi, 403, NULL);
#endif
/* Close and free connection */
return -1;
case LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION:
if (!in) {
JANUS_LOG(LOG_VERB, "Rejecting incoming HTTP request on WebSockets endpoint: no sub-protocol specified\n");
return -1;
}
break;
default:
break;
}
return 0;
}
static int janus_websockets_callback_https(
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
struct lws *wsi,
enum lws_callback_reasons reason,
#else
struct libwebsocket_context *this,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason,
#endif
void *user, void *in, size_t len)
{
/* We just forward the event to the HTTP handler */
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
return janus_websockets_callback_http(wsi, reason, user, in, len);
#else
return janus_websockets_callback_http(this, wsi, reason, user, in, len);
#endif
}
/* This callback handles Janus API requests */
static int janus_websockets_common_callback(
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
struct lws *wsi,
enum lws_callback_reasons reason,
#else
struct libwebsocket_context *this,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason,
#endif
void *user, void *in, size_t len, gboolean admin)
{
const char *log_prefix = admin ? "AdminWSS" : "WSS";
janus_websockets_client *ws_client = (janus_websockets_client *)user;
switch(reason) {
case LWS_CALLBACK_ESTABLISHED: {
/* Is there any filtering we should apply? */
char name[256], ip[256];
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
lws_get_peer_addresses(wsi, lws_get_socket_fd(wsi), name, 256, ip, 256);
#else
libwebsockets_get_peer_addresses(this, wsi, libwebsocket_get_socket_fd(wsi), name, 256, ip, 256);
#endif
JANUS_LOG(LOG_VERB, "[%s-%p] WebSocket connection opened from %s by %s\n", log_prefix, wsi, ip, name);
if(!janus_websockets_is_allowed(ip, admin)) {
JANUS_LOG(LOG_ERR, "[%s-%p] IP %s is unauthorized to connect to the WebSockets %s API interface\n", log_prefix, wsi, ip, admin ? "Admin" : "Janus");
/* Close the connection */
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
lws_callback_on_writable(wsi);
#else
libwebsocket_callback_on_writable(this, wsi);
#endif
return -1;
}
JANUS_LOG(LOG_VERB, "[%s-%p] WebSocket connection accepted\n", log_prefix, wsi);
if(ws_client == NULL) {
JANUS_LOG(LOG_ERR, "[%s-%p] Invalid WebSocket client instance...\n", log_prefix, wsi);
return -1;
}
/* Clean the old sessions list, in case this pointer was used before */
janus_mutex_lock(&old_wss_mutex);
if(g_list_find(old_wss, ws_client) != NULL)
old_wss = g_list_remove(old_wss, ws_client);
janus_mutex_unlock(&old_wss_mutex);
/* Prepare the session */
#ifndef HAVE_LIBWEBSOCKETS_NEWAPI
ws_client->context = this;
#endif
ws_client->wsi = wsi;
ws_client->messages = g_async_queue_new();
ws_client->buffer = NULL;
ws_client->buflen = 0;
ws_client->bufpending = 0;
ws_client->bufoffset = 0;
ws_client->session_timeout = 0;
ws_client->destroy = 0;
janus_mutex_init(&ws_client->mutex);
/* Let us know when the WebSocket channel becomes writeable */
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
lws_callback_on_writable(wsi);
#else
libwebsocket_callback_on_writable(this, wsi);
#endif
JANUS_LOG(LOG_VERB, "[%s-%p] -- Ready to be used!\n", log_prefix, wsi);
/* Notify handlers about this new transport */
if(notify_events && gateway->events_is_enabled()) {
json_t *info = json_object();
json_object_set_new(info, "event", json_string("connected"));
json_object_set_new(info, "admin_api", admin ? json_true() : json_false());
json_object_set_new(info, "ip", json_string(ip));
gateway->notify_event(&janus_websockets_transport, ws_client, info);
}
return 0;
}
case LWS_CALLBACK_RECEIVE: {
JANUS_LOG(LOG_HUGE, "[%s-%p] Got %zu bytes:\n", log_prefix, wsi, len);
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
if(ws_client == NULL || ws_client->wsi == NULL) {
#else
if(ws_client == NULL || ws_client->context == NULL || ws_client->wsi == NULL) {
#endif
JANUS_LOG(LOG_ERR, "[%s-%p] Invalid WebSocket client instance...\n", log_prefix, wsi);
return -1;
}
/* Is this a new message, or part of a fragmented one? */
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
const size_t remaining = lws_remaining_packet_payload(wsi);
#else
const size_t remaining = libwebsockets_remaining_packet_payload(wsi);
#endif
if(ws_client->incoming == NULL) {
JANUS_LOG(LOG_HUGE, "[%s-%p] First fragment: %zu bytes, %zu remaining\n", log_prefix, wsi, len, remaining);
ws_client->incoming = g_malloc0(len+1);
memcpy(ws_client->incoming, in, len);
ws_client->incoming[len] = '\0';
JANUS_LOG(LOG_HUGE, "%s\n", ws_client->incoming);
} else {
size_t offset = strlen(ws_client->incoming);
JANUS_LOG(LOG_HUGE, "[%s-%p] Appending fragment: offset %zu, %zu bytes, %zu remaining\n", log_prefix, wsi, offset, len, remaining);
ws_client->incoming = g_realloc(ws_client->incoming, offset+len+1);
memcpy(ws_client->incoming+offset, in, len);
ws_client->incoming[offset+len] = '\0';
JANUS_LOG(LOG_HUGE, "%s\n", ws_client->incoming+offset);
}
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
if(remaining > 0 || !lws_is_final_fragment(wsi)) {
#else
if(remaining > 0 || !libwebsocket_is_final_fragment(wsi)) {
#endif
/* Still waiting for some more fragments */
JANUS_LOG(LOG_HUGE, "[%s-%p] Waiting for more fragments\n", log_prefix, wsi);
return 0;
}
JANUS_LOG(LOG_HUGE, "[%s-%p] Done, parsing message: %zu bytes\n", log_prefix, wsi, strlen(ws_client->incoming));
/* If we got here, the message is complete: parse the JSON payload */
json_error_t error;
json_t *root = json_loads(ws_client->incoming, 0, &error);
g_free(ws_client->incoming);
ws_client->incoming = NULL;
/* Notify the core, passing both the object and, since it may be needed, the error */
gateway->incoming_request(&janus_websockets_transport, ws_client, NULL, admin, root, &error);
return 0;
}
case LWS_CALLBACK_SERVER_WRITEABLE: {
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
if(ws_client == NULL || ws_client->wsi == NULL) {
#else
if(ws_client == NULL || ws_client->context == NULL || ws_client->wsi == NULL) {
#endif
JANUS_LOG(LOG_ERR, "[%s-%p] Invalid WebSocket client instance...\n", log_prefix, wsi);
return -1;
}
if(!ws_client->destroy && !g_atomic_int_get(&stopping)) {
janus_mutex_lock(&ws_client->mutex);
/* Check if we have a pending/partial write to complete first */
if(ws_client->buffer && ws_client->bufpending > 0 && ws_client->bufoffset > 0
&& !ws_client->destroy && !g_atomic_int_get(&stopping)) {
JANUS_LOG(LOG_HUGE, "[%s-%p] Completing pending WebSocket write (still need to write last %d bytes)...\n",
log_prefix, wsi, ws_client->bufpending);
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
int sent = lws_write(wsi, ws_client->buffer + ws_client->bufoffset, ws_client->bufpending, LWS_WRITE_TEXT);
#else
int sent = libwebsocket_write(wsi, ws_client->buffer + ws_client->bufoffset, ws_client->bufpending, LWS_WRITE_TEXT);
#endif
JANUS_LOG(LOG_HUGE, "[%s-%p] -- Sent %d/%d bytes\n", log_prefix, wsi, sent, ws_client->bufpending);
if(sent > -1 && sent < ws_client->bufpending) {
/* We still couldn't send everything that was left, we'll try and complete this in the next round */
ws_client->bufpending -= sent;
ws_client->bufoffset += sent;
} else {
/* Clear the pending/partial write queue */
ws_client->bufpending = 0;
ws_client->bufoffset = 0;
}
/* Done for this round, check the next response/notification later */
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
lws_callback_on_writable(wsi);
#else
libwebsocket_callback_on_writable(this, wsi);
#endif
janus_mutex_unlock(&ws_client->mutex);
return 0;
}
/* Shoot all the pending messages */
char *response = g_async_queue_try_pop(ws_client->messages);
if(response && !ws_client->destroy && !g_atomic_int_get(&stopping)) {
/* Gotcha! */
int buflen = LWS_SEND_BUFFER_PRE_PADDING + strlen(response) + LWS_SEND_BUFFER_POST_PADDING;
if(ws_client->buffer == NULL) {
/* Let's allocate a shared buffer */
JANUS_LOG(LOG_HUGE, "[%s-%p] Allocating %d bytes (response is %zu bytes)\n", log_prefix, wsi, buflen, strlen(response));
ws_client->buflen = buflen;
ws_client->buffer = g_malloc0(buflen);
} else if(buflen > ws_client->buflen) {
/* We need a larger shared buffer */
JANUS_LOG(LOG_HUGE, "[%s-%p] Re-allocating to %d bytes (was %d, response is %zu bytes)\n", log_prefix, wsi, buflen, ws_client->buflen, strlen(response));
ws_client->buflen = buflen;
ws_client->buffer = g_realloc(ws_client->buffer, buflen);
}
memcpy(ws_client->buffer + LWS_SEND_BUFFER_PRE_PADDING, response, strlen(response));
JANUS_LOG(LOG_HUGE, "[%s-%p] Sending WebSocket message (%zu bytes)...\n", log_prefix, wsi, strlen(response));
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
int sent = lws_write(wsi, ws_client->buffer + LWS_SEND_BUFFER_PRE_PADDING, strlen(response), LWS_WRITE_TEXT);
#else
int sent = libwebsocket_write(wsi, ws_client->buffer + LWS_SEND_BUFFER_PRE_PADDING, strlen(response), LWS_WRITE_TEXT);
#endif
JANUS_LOG(LOG_HUGE, "[%s-%p] -- Sent %d/%zu bytes\n", log_prefix, wsi, sent, strlen(response));
if(sent > -1 && sent < (int)strlen(response)) {
/* We couldn't send everything in a single write, we'll complete this in the next round */
ws_client->bufpending = strlen(response) - sent;
ws_client->bufoffset = LWS_SEND_BUFFER_PRE_PADDING + sent;
JANUS_LOG(LOG_HUGE, "[%s-%p] -- Couldn't write all bytes (%d missing), setting offset %d\n",
log_prefix, wsi, ws_client->bufpending, ws_client->bufoffset);
}
/* We can get rid of the message */
free(response);
/* Done for this round, check the next response/notification later */
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
lws_callback_on_writable(wsi);
#else
libwebsocket_callback_on_writable(this, wsi);
#endif
janus_mutex_unlock(&ws_client->mutex);
return 0;
}
janus_mutex_unlock(&ws_client->mutex);
}
return 0;
}
case LWS_CALLBACK_CLOSED: {
JANUS_LOG(LOG_VERB, "[%s-%p] WS connection down, closing\n", log_prefix, wsi);
janus_websockets_destroy_client(ws_client, wsi, log_prefix);
JANUS_LOG(LOG_VERB, "[%s-%p] -- closed\n", log_prefix, wsi);
return 0;
}
case LWS_CALLBACK_WSI_DESTROY: {
JANUS_LOG(LOG_VERB, "[%s-%p] WS connection down, destroying\n", log_prefix, wsi);
janus_websockets_destroy_client(ws_client, wsi, log_prefix);
JANUS_LOG(LOG_VERB, "[%s-%p] -- destroyed\n", log_prefix, wsi);
return 0;
}
default:
if(wsi != NULL) {
JANUS_LOG(LOG_HUGE, "[%s-%p] %d (%s)\n", log_prefix, wsi, reason, janus_websockets_reason_string(reason));
} else {
JANUS_LOG(LOG_HUGE, "[%s] %d (%s)\n", log_prefix, reason, janus_websockets_reason_string(reason));
}
break;
}
return 0;
}
/* This callback handles Janus API requests */
static int janus_websockets_callback(
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
struct lws *wsi,
enum lws_callback_reasons reason,
#else
struct libwebsocket_context *this,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason,
#endif
void *user, void *in, size_t len)
{
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
return janus_websockets_common_callback(wsi, reason, user, in, len, FALSE);
#else
return janus_websockets_common_callback(this, wsi, reason, user, in, len, FALSE);
#endif
}
static int janus_websockets_callback_secure(
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
struct lws *wsi,
enum lws_callback_reasons reason,
#else
struct libwebsocket_context *this,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason,
#endif
void *user, void *in, size_t len)
{
/* We just forward the event to the Janus API handler */
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
return janus_websockets_callback(wsi, reason, user, in, len);
#else
return janus_websockets_callback(this, wsi, reason, user, in, len);
#endif
}
/* This callback handles Admin API requests */
static int janus_websockets_admin_callback(
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
struct lws *wsi,
enum lws_callback_reasons reason,
#else
struct libwebsocket_context *this,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason,
#endif
void *user, void *in, size_t len)
{
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
return janus_websockets_common_callback(wsi, reason, user, in, len, TRUE);
#else
return janus_websockets_common_callback(this, wsi, reason, user, in, len, TRUE);
#endif
}
static int janus_websockets_admin_callback_secure(
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
struct lws *wsi,
enum lws_callback_reasons reason,
#else
struct libwebsocket_context *this,
struct libwebsocket *wsi,
enum libwebsocket_callback_reasons reason,
#endif
void *user, void *in, size_t len)
{
/* We just forward the event to the Admin API handler */
#ifdef HAVE_LIBWEBSOCKETS_NEWAPI
return janus_websockets_admin_callback(wsi, reason, user, in, len);
#else
return janus_websockets_admin_callback(this, wsi, reason, user, in, len);
#endif
}
/* This callback handles Janus API requests */
static int janus_websockets_common_callback(
struct lws *wsi,
enum lws_callback_reasons reason,
void *user, void *in, size_t len, gboolean admin)
{
const char *log_prefix = admin ? "AdminWSS" : "WSS";
janus_websockets_client *ws_client = (janus_websockets_client *)user;
switch(reason) {
case LWS_CALLBACK_ESTABLISHED: {
/* Is there any filtering we should apply? */
char ip[256];
#ifdef HAVE_LIBWEBSOCKETS_PEER_SIMPLE
lws_get_peer_simple(wsi, ip, 256);
JANUS_LOG(LOG_VERB, "[%s-%p] WebSocket connection opened from %s\n", log_prefix, wsi, ip);
#else
char name[256];
lws_get_peer_addresses(wsi, lws_get_socket_fd(wsi), name, 256, ip, 256);
JANUS_LOG(LOG_VERB, "[%s-%p] WebSocket connection opened from %s by %s\n", log_prefix, wsi, ip, name);
#endif
if(!janus_websockets_is_allowed(ip, admin)) {
JANUS_LOG(LOG_ERR, "[%s-%p] IP %s is unauthorized to connect to the WebSockets %s API interface\n", log_prefix, wsi, ip, admin ? "Admin" : "Janus");
/* Close the connection */
lws_callback_on_writable(wsi);
return -1;
}
JANUS_LOG(LOG_VERB, "[%s-%p] WebSocket connection accepted\n", log_prefix, wsi);
if(ws_client == NULL) {
JANUS_LOG(LOG_ERR, "[%s-%p] Invalid WebSocket client instance...\n", log_prefix, wsi);
return -1;
}
/* Prepare the session */
ws_client->wsi = wsi;
ws_client->messages = g_async_queue_new();
ws_client->buffer = NULL;
ws_client->buflen = 0;
ws_client->bufpending = 0;
ws_client->bufoffset = 0;
g_atomic_int_set(&ws_client->destroyed, 0);
ws_client->ts = janus_transport_session_create(ws_client, NULL);
/* Let us know when the WebSocket channel becomes writeable */
lws_callback_on_writable(wsi);
JANUS_LOG(LOG_VERB, "[%s-%p] -- Ready to be used!\n", log_prefix, wsi);
/* Notify handlers about this new transport */
if(notify_events && gateway->events_is_enabled()) {
json_t *info = json_object();
json_object_set_new(info, "event", json_string("connected"));
json_object_set_new(info, "admin_api", admin ? json_true() : json_false());
json_object_set_new(info, "ip", json_string(ip));
gateway->notify_event(&janus_websockets_transport, ws_client->ts, info);
}
return 0;
}
case LWS_CALLBACK_RECEIVE: {
JANUS_LOG(LOG_HUGE, "[%s-%p] Got %zu bytes:\n", log_prefix, wsi, len);
if(ws_client == NULL || ws_client->wsi == NULL) {
JANUS_LOG(LOG_ERR, "[%s-%p] Invalid WebSocket client instance...\n", log_prefix, wsi);
return -1;
}
if(g_atomic_int_get(&ws_client->destroyed))
return 0;
/* Is this a new message, or part of a fragmented one? */
const size_t remaining = lws_remaining_packet_payload(wsi);
if(ws_client->incoming == NULL) {
JANUS_LOG(LOG_HUGE, "[%s-%p] First fragment: %zu bytes, %zu remaining\n", log_prefix, wsi, len, remaining);
ws_client->incoming = g_malloc(len+1);
memcpy(ws_client->incoming, in, len);
ws_client->incoming[len] = '\0';
JANUS_LOG(LOG_HUGE, "%s\n", ws_client->incoming);
} else {
size_t offset = strlen(ws_client->incoming);
JANUS_LOG(LOG_HUGE, "[%s-%p] Appending fragment: offset %zu, %zu bytes, %zu remaining\n", log_prefix, wsi, offset, len, remaining);
ws_client->incoming = g_realloc(ws_client->incoming, offset+len+1);
memcpy(ws_client->incoming+offset, in, len);
ws_client->incoming[offset+len] = '\0';
JANUS_LOG(LOG_HUGE, "%s\n", ws_client->incoming+offset);
}
if(remaining > 0 || !lws_is_final_fragment(wsi)) {
/* Still waiting for some more fragments */
JANUS_LOG(LOG_HUGE, "[%s-%p] Waiting for more fragments\n", log_prefix, wsi);
return 0;
}
JANUS_LOG(LOG_HUGE, "[%s-%p] Done, parsing message: %zu bytes\n", log_prefix, wsi, strlen(ws_client->incoming));
/* If we got here, the message is complete: parse the JSON payload */
json_error_t error;
json_t *root = json_loads(ws_client->incoming, 0, &error);
g_free(ws_client->incoming);
ws_client->incoming = NULL;
/* Notify the core, passing both the object and, since it may be needed, the error */
gateway->incoming_request(&janus_websockets_transport, ws_client->ts, NULL, admin, root, &error);
return 0;
}
case LWS_CALLBACK_SERVER_WRITEABLE: {
if(ws_client == NULL || ws_client->wsi == NULL) {
JANUS_LOG(LOG_ERR, "[%s-%p] Invalid WebSocket client instance...\n", log_prefix, wsi);
return -1;
}
if(!g_atomic_int_get(&ws_client->destroyed) && !g_atomic_int_get(&stopping)) {
janus_mutex_lock(&ws_client->ts->mutex);
/* Check if we have a pending/partial write to complete first */
if(ws_client->buffer && ws_client->bufpending > 0 && ws_client->bufoffset > 0
&& !g_atomic_int_get(&ws_client->destroyed) && !g_atomic_int_get(&stopping)) {
JANUS_LOG(LOG_HUGE, "[%s-%p] Completing pending WebSocket write (still need to write last %d bytes)...\n",
log_prefix, wsi, ws_client->bufpending);
int sent = lws_write(wsi, ws_client->buffer + ws_client->bufoffset, ws_client->bufpending, LWS_WRITE_TEXT);
JANUS_LOG(LOG_HUGE, "[%s-%p] -- Sent %d/%d bytes\n", log_prefix, wsi, sent, ws_client->bufpending);
if(sent > -1 && sent < ws_client->bufpending) {
/* We still couldn't send everything that was left, we'll try and complete this in the next round */
ws_client->bufpending -= sent;
ws_client->bufoffset += sent;
} else {
/* Clear the pending/partial write queue */
ws_client->bufpending = 0;
ws_client->bufoffset = 0;
}
/* Done for this round, check the next response/notification later */
lws_callback_on_writable(wsi);
janus_mutex_unlock(&ws_client->ts->mutex);
return 0;
}
/* Shoot all the pending messages */
char *response = g_async_queue_try_pop(ws_client->messages);
if(response && !g_atomic_int_get(&ws_client->destroyed) && !g_atomic_int_get(&stopping)) {
/* Gotcha! */
int buflen = LWS_SEND_BUFFER_PRE_PADDING + strlen(response) + LWS_SEND_BUFFER_POST_PADDING;
if (buflen > ws_client->buflen) {
/* We need a larger shared buffer */
JANUS_LOG(LOG_HUGE, "[%s-%p] Re-allocating to %d bytes (was %d, response is %zu bytes)\n", log_prefix, wsi, buflen, ws_client->buflen, strlen(response));
ws_client->buflen = buflen;
ws_client->buffer = g_realloc(ws_client->buffer, buflen);
}
memcpy(ws_client->buffer + LWS_SEND_BUFFER_PRE_PADDING, response, strlen(response));
JANUS_LOG(LOG_HUGE, "[%s-%p] Sending WebSocket message (%zu bytes)...\n", log_prefix, wsi, strlen(response));
int sent = lws_write(wsi, ws_client->buffer + LWS_SEND_BUFFER_PRE_PADDING, strlen(response), LWS_WRITE_TEXT);
JANUS_LOG(LOG_HUGE, "[%s-%p] -- Sent %d/%zu bytes\n", log_prefix, wsi, sent, strlen(response));
if(sent > -1 && sent < (int)strlen(response)) {
/* We couldn't send everything in a single write, we'll complete this in the next round */
ws_client->bufpending = strlen(response) - sent;
ws_client->bufoffset = LWS_SEND_BUFFER_PRE_PADDING + sent;
JANUS_LOG(LOG_HUGE, "[%s-%p] -- Couldn't write all bytes (%d missing), setting offset %d\n",
log_prefix, wsi, ws_client->bufpending, ws_client->bufoffset);
}
/* We can get rid of the message */
free(response);
/* Done for this round, check the next response/notification later */
lws_callback_on_writable(wsi);
janus_mutex_unlock(&ws_client->ts->mutex);
return 0;
}
janus_mutex_unlock(&ws_client->ts->mutex);
}
return 0;
}
case LWS_CALLBACK_CLOSED: {
JANUS_LOG(LOG_VERB, "[%s-%p] WS connection down, closing\n", log_prefix, wsi);
janus_websockets_destroy_client(ws_client, wsi, log_prefix);
JANUS_LOG(LOG_VERB, "[%s-%p] -- closed\n", log_prefix, wsi);
return 0;
}
case LWS_CALLBACK_WSI_DESTROY: {
JANUS_LOG(LOG_VERB, "[%s-%p] WS connection down, destroying\n", log_prefix, wsi);
janus_websockets_destroy_client(ws_client, wsi, log_prefix);
JANUS_LOG(LOG_VERB, "[%s-%p] -- destroyed\n", log_prefix, wsi);
return 0;
}
default:
if(wsi != NULL) {
JANUS_LOG(LOG_HUGE, "[%s-%p] %d (%s)\n", log_prefix, wsi, reason, janus_websockets_reason_string(reason));
} else {
JANUS_LOG(LOG_HUGE, "[%s] %d (%s)\n", log_prefix, reason, janus_websockets_reason_string(reason));
}
break;
}
return 0;
}
