int wslay_event_queue_close(wslay_event_context_ptr ctx, uint16_t status_code, const uint8_t *reason, size_t reason_length)
{
if (!wslay_event_is_msg_queueable(ctx)) {
return WSLAY_ERR_NO_MORE_MSG;
} else if (reason_length > 123) {
return WSLAY_ERR_INVALID_ARGUMENT;
} else {
uint8_t msg[128];
size_t msg_length;
struct wslay_event_msg arg;
uint16_t ncode;
int r;
if (status_code == 0) {
msg_length = 0;
} else {
ncode = htons(status_code);
memcpy(msg, &ncode, 2);
memcpy(msg + 2, reason, reason_length);
msg_length = reason_length + 2;
}
arg.opcode = WSLAY_CONNECTION_CLOSE;
arg.msg = msg;
arg.msg_length = msg_length;
r = wslay_event_queue_msg(ctx, &arg);
if (r == 0) {
ctx->close_status |= WSLAY_CLOSE_QUEUED;
}
return r;
}
}
int dslink_ws_send(wslay_event_context_ptr ctx, const char *data) {
struct wslay_event_msg msg;
msg.msg = (const uint8_t *) data;
msg.msg_length = strlen(data);
msg.opcode = WSLAY_TEXT_FRAME;
wslay_event_queue_msg(ctx, &msg);
wslay_event_send(ctx);
log_debug("Message sent: %s\n", data);
return 0;
}
void on_msg_recv_callback(wslay_event_context_ptr ctx,
const struct wslay_event_on_msg_recv_arg *arg,
void *user_data)
{
if(!wslay_is_ctrl_frame(arg->opcode)) {
struct wslay_event_msg msgarg = {
arg->opcode, arg->msg, arg->msg_length
};
wslay_event_queue_msg(ctx, &msgarg);
}
}
void WebSocket::write(const Message& msg)
{
const String& data = msg.message();
wslay_event_msg wmsg = {
static_cast<uint8_t>(msg.opcode()),
reinterpret_cast<const uint8_t*>(data.constData()),
static_cast<size_t>(data.size())
};
wslay_event_queue_msg(mCtx, &wmsg);
wslay_event_send(mCtx);
}
static void on_ws_message(h2o_websocket_conn_t *conn, const struct wslay_event_on_msg_recv_arg *arg)
{
if (arg == NULL) {
h2o_websocket_close(conn);
return;
}
if (!wslay_is_ctrl_frame(arg->opcode)) {
struct wslay_event_msg msgarg = {arg->opcode, arg->msg, arg->msg_length};
wslay_event_queue_msg(conn->ws_ctx, &msgarg);
}
}
websocket_return_t websocket_queue_msg(websocket_t *websocket, websocket_frame_t *tx_frame)
{
if (websocket == NULL || tx_frame == NULL) {
WEBSOCKET_DEBUG("NULL parameter\n");
return WEBSOCKET_ALLOCATION_ERROR;
}
if (websocket->state == WEBSOCKET_STOP) {
WEBSOCKET_DEBUG("websocket is not running state.\n");
return WEBSOCKET_INIT_ERROR;
}
return wslay_event_queue_msg(websocket->ctx, tx_frame);
}
static
int dslink_ws_send_internal(wslay_event_context_ptr ctx, const char *data, uint8_t resend) {
(void) resend;
struct wslay_event_msg msg;
msg.msg = (const uint8_t *) data;
msg.msg_length = strlen(data);
msg.opcode = WSLAY_TEXT_FRAME;
if (wslay_event_queue_msg(ctx, &msg) != 0) {
return 1;
}
if (wslay_event_send(ctx) != 0) {
return 1;
}
log_debug("Message sent: %s\n", data);
return 0;
}
websocket_return_t websocket_queue_ping(websocket_t *websocket)
{
websocket_frame_t tx_frame;
if (websocket == NULL) {
WEBSOCKET_DEBUG("NULL parameter\n");
return WEBSOCKET_ALLOCATION_ERROR;
}
if (websocket->state == WEBSOCKET_STOP) {
WEBSOCKET_DEBUG("websocket is not running state.\n");
return WEBSOCKET_INIT_ERROR;
}
tx_frame.opcode = WEBSOCKET_PING;
tx_frame.msg = (uint8_t *) "\0";
tx_frame.msg_length = strlen((const char *)tx_frame.msg);
return wslay_event_queue_msg(websocket->ctx, &tx_frame);
}
static mrb_value
mrb_wslay_event_queue_msg(mrb_state *mrb, mrb_value self)
{
mrb_wslay_user_data *data = (mrb_wslay_user_data *) DATA_PTR(self);
mrb_assert(data);
mrb_value msg;
mrb_sym opcode;
mrb_int opc;
if (mrb_get_args(mrb, "S|n", &msg, &opcode) == 1) {
if (mrb_str_is_utf8(msg)) {
opc = WSLAY_TEXT_FRAME;
} else {
opc = WSLAY_BINARY_FRAME;
}
} else {
opc = mrb_fixnum(MRB_GET_OPCODE(mrb_symbol_value(opcode)));
}
struct wslay_event_msg msgarg = {
opc, (const uint8_t *) RSTRING_PTR(msg), RSTRING_LEN(msg)
};
int err = wslay_event_queue_msg(data->ctx, &msgarg);
if (err == WSLAY_ERR_NOMEM) {
mrb_sys_fail(mrb, "wslay_event_queue_msg");
}
else if (err == WSLAY_ERR_NO_MORE_MSG) {
mrb_raise(mrb, E_WSLAY_ERROR, "further message queueing is not allowed");
}
else if (err == WSLAY_ERR_INVALID_ARGUMENT) {
mrb_raise(mrb, E_WSLAY_ERROR, "the given message is invalid");
}
else if (err != 0) {
return MRB_WSLAY_ERROR(mrb_fixnum_value(err));
}
return self;
}
void on_msg_recv_callback(wslay_event_context_ptr ctx,
const struct wslay_event_on_msg_recv_arg *arg,
void *user_data)
{
(void)user_data;
/* Echo back non-control message */
if(!wslay_is_ctrl_frame(arg->opcode)) {
struct wslay_event_msg msgarg;
msgarg.opcode = arg->opcode;
msgarg.msg = arg->msg;
msgarg.msg_length = arg->msg_length;
wslay_event_queue_msg(ctx, &msgarg);
}
#if DBG_PRINT
if(1) {
char *data = (char*)malloc((arg->msg_length+1)*sizeof(char));
memcpy(data, arg->msg, arg->msg_length);
data[arg->msg_length] = '\0';
printf("Msg recv callback, opcode: %d msg: %s\n", arg->opcode, data);
}
#endif
}
int wslay_event_recv(wslay_event_context_ptr ctx)
{
struct wslay_frame_iocb iocb;
ssize_t r;
while (ctx->read_enabled) {
memset(&iocb, 0, sizeof(iocb));
r = wslay_frame_recv(ctx->frame_ctx, &iocb);
if (r >= 0) {
int new_frame = 0;
/* RSV1 is not allowed on control and continuation frames */
if ((!wslay_event_verify_rsv_bits(ctx, iocb.rsv)) || (wslay_get_rsv1(iocb.rsv) && (wslay_is_ctrl_frame(iocb.opcode) || iocb.opcode == WSLAY_CONTINUATION_FRAME)) || (ctx->server && !iocb.mask) || (!ctx->server && iocb.mask)) {
if ((r = wslay_event_queue_close_wrapper(ctx, WSLAY_CODE_PROTOCOL_ERROR, NULL, 0)) != 0) {
return r;
}
break;
}
if (ctx->imsg->opcode == 0xffu) {
if (iocb.opcode == WSLAY_TEXT_FRAME || iocb.opcode == WSLAY_BINARY_FRAME || iocb.opcode == WSLAY_CONNECTION_CLOSE || iocb.opcode == WSLAY_PING || iocb.opcode == WSLAY_PONG) {
wslay_event_imsg_set(ctx->imsg, iocb.fin, iocb.rsv, iocb.opcode);
new_frame = 1;
} else {
if ((r = wslay_event_queue_close_wrapper(ctx, WSLAY_CODE_PROTOCOL_ERROR, NULL, 0)) != 0) {
return r;
}
break;
}
} else if (ctx->ipayloadlen == 0 && ctx->ipayloadoff == 0) {
if (iocb.opcode == WSLAY_CONTINUATION_FRAME) {
ctx->imsg->fin = iocb.fin;
} else if (iocb.opcode == WSLAY_CONNECTION_CLOSE || iocb.opcode == WSLAY_PING || iocb.opcode == WSLAY_PONG) {
ctx->imsg = &ctx->imsgs[1];
wslay_event_imsg_set(ctx->imsg, iocb.fin, iocb.rsv, iocb.opcode);
} else {
if ((r = wslay_event_queue_close_wrapper(ctx, WSLAY_CODE_PROTOCOL_ERROR, NULL, 0)) != 0) {
return r;
}
break;
}
new_frame = 1;
}
if (new_frame) {
if (ctx->imsg->msg_length + iocb.payload_length > ctx->max_recv_msg_length) {
if ((r = wslay_event_queue_close_wrapper(ctx, WSLAY_CODE_MESSAGE_TOO_BIG, NULL, 0)) != 0) {
return r;
}
break;
}
ctx->ipayloadlen = iocb.payload_length;
wslay_event_call_on_frame_recv_start_callback(ctx, &iocb);
if (!wslay_event_config_get_no_buffering(ctx) || wslay_is_ctrl_frame(iocb.opcode)) {
if ((r = wslay_event_imsg_append_chunk(ctx->imsg, iocb.payload_length)) != 0) {
ctx->read_enabled = 0;
return r;
}
}
}
/* If RSV1 bit is set then it is too early for utf-8 validation */
if ((!wslay_get_rsv1(iocb.rsv) && ctx->imsg->opcode == WSLAY_TEXT_FRAME)
|| ctx->imsg->opcode == WSLAY_CONNECTION_CLOSE) {
size_t i;
if (ctx->imsg->opcode == WSLAY_CONNECTION_CLOSE) {
i = 2;
} else {
i = 0;
}
for (; i < iocb.data_length; ++i) {
uint32_t codep;
if (decode(&ctx->imsg->utf8state, &codep, iocb.data[i]) == UTF8_REJECT) {
if ((r = wslay_event_queue_close_wrapper(ctx, WSLAY_CODE_INVALID_FRAME_PAYLOAD_DATA, NULL, 0)) != 0) {
return r;
}
break;
}
}
}
if (ctx->imsg->utf8state == UTF8_REJECT) {
break;
}
wslay_event_call_on_frame_recv_chunk_callback(ctx, &iocb);
if (iocb.data_length > 0) {
if (!wslay_event_config_get_no_buffering(ctx) || wslay_is_ctrl_frame(iocb.opcode)) {
struct wslay_event_byte_chunk *chunk;
chunk = wslay_queue_tail(ctx->imsg->chunks);
wslay_event_byte_chunk_copy(chunk, ctx->ipayloadoff, iocb.data, iocb.data_length);
}
ctx->ipayloadoff += iocb.data_length;
}
if (ctx->ipayloadoff == ctx->ipayloadlen) {
if (ctx->imsg->fin && (ctx->imsg->opcode == WSLAY_TEXT_FRAME || ctx->imsg->opcode == WSLAY_CONNECTION_CLOSE) && ctx->imsg->utf8state != UTF8_ACCEPT) {
if ((r = wslay_event_queue_close_wrapper(ctx, WSLAY_CODE_INVALID_FRAME_PAYLOAD_DATA, NULL, 0)) != 0) {
return r;
}
break;
}
wslay_event_call_on_frame_recv_end_callback(ctx);
if (ctx->imsg->fin) {
if (ctx->callbacks.on_msg_recv_callback || ctx->imsg->opcode == WSLAY_CONNECTION_CLOSE || ctx->imsg->opcode == WSLAY_PING || ctx->imsg->opcode == WSLAY_PONG) {
struct wslay_event_on_msg_recv_arg arg;
uint16_t status_code = 0;
uint8_t *msg = NULL;
size_t msg_length = 0;
if (!wslay_event_config_get_no_buffering(ctx) || wslay_is_ctrl_frame(iocb.opcode)) {
msg = wslay_event_flatten_queue(ctx->imsg->chunks, ctx->imsg->msg_length);
if (ctx->imsg->msg_length && !msg) {
ctx->read_enabled = 0;
return WSLAY_ERR_NOMEM;
}
msg_length = ctx->imsg->msg_length;
}
if (ctx->imsg->opcode == WSLAY_CONNECTION_CLOSE) {
const uint8_t *reason;
size_t reason_length;
if (ctx->imsg->msg_length >= 2) {
memcpy(&status_code, msg, 2);
status_code = ntohs(status_code);
if (!wslay_event_is_valid_status_code(status_code)) {
free(msg);
if ((r = wslay_event_queue_close_wrapper(ctx, WSLAY_CODE_PROTOCOL_ERROR, NULL, 0)) != 0) {
return r;
}
break;
}
reason = msg + 2;
reason_length = ctx->imsg->msg_length - 2;
} else {
reason = NULL;
reason_length = 0;
}
ctx->close_status |= WSLAY_CLOSE_RECEIVED;
ctx->status_code_recv = status_code == 0 ? WSLAY_CODE_NO_STATUS_RCVD : status_code;
if ((r = wslay_event_queue_close_wrapper(ctx, status_code, reason, reason_length)) != 0) {
free(msg);
return r;
}
} else if (ctx->imsg->opcode == WSLAY_PING) {
struct wslay_event_msg pong_arg;
pong_arg.opcode = WSLAY_PONG;
pong_arg.msg = msg;
pong_arg.msg_length = ctx->imsg->msg_length;
if ((r = wslay_event_queue_msg(ctx, &pong_arg)) && r != WSLAY_ERR_NO_MORE_MSG) {
ctx->read_enabled = 0;
free(msg);
return r;
}
} else if (ctx->imsg->opcode == WSLAY_PONG) {
struct websocket_info_t *info = ctx->user_data;
info->data->ping_cnt = 0;
}
if (ctx->callbacks.on_msg_recv_callback) {
arg.rsv = ctx->imsg->rsv;
arg.opcode = ctx->imsg->opcode;
arg.msg = msg;
arg.msg_length = msg_length;
arg.status_code = status_code;
ctx->error = 0;
ctx->callbacks.on_msg_recv_callback(ctx, &arg, ctx->user_data);
if (ctx->imsg->opcode != WSLAY_CONNECTION_CLOSE) {
free(msg);
wslay_event_imsg_reset(ctx->imsg);
if (ctx->imsg == &ctx->imsgs[1]) {
ctx->imsg = &ctx->imsgs[0];
}
ctx->ipayloadlen = ctx->ipayloadoff = 0;
break;
}
}
if (ctx->imsg->opcode == WSLAY_CONNECTION_CLOSE) {
struct websocket_info_t *info = ctx->user_data;
if (!wslay_queue_empty(ctx->send_ctrl_queue)) {
wslay_event_send(ctx);
}
websocket_update_state(info->data, WEBSOCKET_STOP);
}
free(msg);
}
wslay_event_imsg_reset(ctx->imsg);
if (ctx->imsg == &ctx->imsgs[1]) {
ctx->imsg = &ctx->imsgs[0];
}
}
ctx->ipayloadlen = ctx->ipayloadoff = 0;
}
} else {
if (r != WSLAY_ERR_WANT_READ || (ctx->error != WSLAY_ERR_WOULDBLOCK && ctx->error != 0)) {
if ((r = wslay_event_queue_close_wrapper(ctx, 0, NULL, 0)) != 0) {
return r;
}
return WSLAY_ERR_CALLBACK_FAILURE;
}
break;
}
}
return 0;
}
/**
* \brief The function with websocket infinite loop
*/
void *vs_websocket_loop(void *arg)
{
/* The vContext is passed as *user_data* in callback functions. */
struct vContext *C = (struct vContext*)arg;
struct VS_CTX *vs_ctx = CTX_server_ctx(C);
struct IO_CTX *io_ctx = CTX_io_ctx(C);
struct VStreamConn *stream_conn = CTX_current_stream_conn(C);
struct VSession *vsession = CTX_current_session(C);
struct VMessage *r_message=NULL, *s_message=NULL;
wslay_event_context_ptr wslay_ctx;
fd_set read_set, write_set;
struct timeval tv;
int ret, flags;
unsigned int int_size;
struct wslay_event_callbacks callbacks = {
vs_recv_ws_callback_data,
vs_send_ws_callback_data,
NULL,
NULL,
NULL,
NULL,
vs_ws_recv_msg_callback
};
/* Set socket blocking */
flags = fcntl(io_ctx->sockfd, F_GETFL, 0);
fcntl(io_ctx->sockfd, F_SETFL, flags & ~O_NONBLOCK);
http_handshake(io_ctx->sockfd);
/* Try to get size of TCP buffer */
int_size = sizeof(int_size);
getsockopt(io_ctx->sockfd, SOL_SOCKET, SO_RCVBUF,
(void *)&stream_conn->socket_buffer_size, &int_size);
r_message = (struct VMessage*)calloc(1, sizeof(struct VMessage));
s_message = (struct VMessage*)calloc(1, sizeof(struct VMessage));
CTX_r_message_set(C, r_message);
CTX_s_message_set(C, s_message);
stream_conn->host_state = TCP_SERVER_STATE_RESPOND_METHODS;
if(is_log_level(VRS_PRINT_DEBUG_MSG)) {
printf("%c[%d;%dm", 27, 1, 31);
v_print_log(VRS_PRINT_DEBUG_MSG, "Server TCP state: RESPOND_methods\n");
printf("%c[%dm", 27, 0);
}
/* Set non-blocking */
flags = fcntl(io_ctx->sockfd, F_GETFL, 0);
fcntl(io_ctx->sockfd, F_SETFL, flags | O_NONBLOCK);
wslay_event_context_server_init(&wslay_ctx, &callbacks, C);
/* "Never ending" loop */
while(vsession->stream_conn->host_state != TCP_SERVER_STATE_CLOSED)
{
if(vs_ctx->state != SERVER_STATE_READY) {
vsession->stream_conn->host_state = TCP_SERVER_STATE_CLOSING;
/* Try to close connection with websocket client */
wslay_event_queue_close(wslay_ctx,
WSLAY_CODE_GOING_AWAY,
(uint8_t*)"Server shutdown", /* Close message */
15); /* The length of close message s*/
}
/* Initialize read set */
FD_ZERO(&read_set);
FD_SET(io_ctx->sockfd, &read_set);
/* Initialize write set */
FD_ZERO(&write_set);
FD_SET(io_ctx->sockfd, &write_set);
/* Set timeout for select() */
if(stream_conn->host_state == TCP_SERVER_STATE_STREAM_OPEN) {
/* Use negotiated FPS */
tv.tv_sec = 0;
tv.tv_usec = 1000000/vsession->fps_host;
} else {
/* User have to send something in 30 seconds */
tv.tv_sec = VRS_TIMEOUT;
tv.tv_usec = 0;
}
if( (ret = select(io_ctx->sockfd+1,
&read_set,
&write_set,
NULL, /* Exception*/
&tv)) == -1) {
if(is_log_level(VRS_PRINT_ERROR)) v_print_log(VRS_PRINT_ERROR, "%s:%s():%d select(): %s\n",
__FILE__, __FUNCTION__, __LINE__, strerror(errno));
goto end;
/* Was event on the listen socket */
} else if(ret>0){
if(FD_ISSET(io_ctx->sockfd, &read_set)) {
if( wslay_event_recv(wslay_ctx) != 0 ) {
goto end;
}
} else if (FD_ISSET(io_ctx->sockfd, &write_set)) {
if( wslay_event_send(wslay_ctx) != 0 ) {
goto end;
}
}
}
if(stream_conn->host_state == TCP_SERVER_STATE_STREAM_OPEN) {
/* Check if there is any command in outgouing queue
* and eventually pack these commands to buffer */
if((ret = v_STREAM_pack_message(C)) == 0 ) {
goto end;
}
/* When at least one command was packed to buffer, then
* queue this buffer to WebSocket layer */
if(ret == 1) {
struct wslay_event_msg msgarg;
msgarg.opcode = WSLAY_BINARY_FRAME;
msgarg.msg = (uint8_t*)io_ctx->buf;
msgarg.msg_length = io_ctx->buf_size;
wslay_event_queue_msg(wslay_ctx, &msgarg);
}
}
}
end:
if(is_log_level(VRS_PRINT_DEBUG_MSG)) {
printf("%c[%d;%dm", 27, 1, 31);
v_print_log(VRS_PRINT_DEBUG_MSG, "Server TCP state: CLOSING\n");
printf("%c[%dm", 27, 0);
}
/* Set up TCP CLOSING state (non-blocking) */
vs_CLOSING(C);
/* Receive and Send messages are not neccessary any more */
if(r_message!=NULL) {
free(r_message);
r_message = NULL;
CTX_r_message_set(C, NULL);
}
if(s_message!=NULL) {
free(s_message);
s_message = NULL;
CTX_s_message_set(C, NULL);
}
/* TCP connection is considered as CLOSED, but it is not possible to use
* this connection for other client */
stream_conn->host_state = TCP_SERVER_STATE_CLOSED;
/* NULL pointer at stream connection */
CTX_current_stream_conn_set(C, NULL);
/* Set TCP connection to CLOSED */
if(is_log_level(VRS_PRINT_DEBUG_MSG)) {
printf("%c[%d;%dm", 27, 1, 31);
v_print_log(VRS_PRINT_DEBUG_MSG, "Server TCP state: CLOSED\n");
printf("%c[%dm", 27, 0);
}
pthread_mutex_lock(&vs_ctx->data.mutex);
/* Unsubscribe this session (this avatar) from all nodes */
vs_node_free_avatar_reference(vs_ctx, vsession);
/* Try to destroy avatar node */
vs_node_destroy_avatar_node(vs_ctx, vsession);
pthread_mutex_unlock(&vs_ctx->data.mutex);
/* This session could be used again for authentication */
stream_conn->host_state=TCP_SERVER_STATE_LISTEN;
/* Clear session flags */
vsession->flags = 0;
if(is_log_level(VRS_PRINT_DEBUG_MSG)) {
printf("%c[%d;%dm", 27, 1, 31);
v_print_log(VRS_PRINT_DEBUG_MSG, "Server TCP state: LISTEN\n");
printf("%c[%dm", 27, 0);
}
free(C);
C = NULL;
pthread_exit(NULL);
return NULL;
}
/**
* \brief WebSocket callback function for recived message
*/
void vs_ws_recv_msg_callback(wslay_event_context_ptr ctx,
const struct wslay_event_on_msg_recv_arg *arg,
void *user_data)
{
struct vContext *C = (struct vContext*)user_data;
struct VSession *session = CTX_current_session(C);
struct IO_CTX *io_ctx = CTX_io_ctx(C);
(void)ctx;
if(!wslay_is_ctrl_frame(arg->opcode)) {
/* Verse server uses binary message for communication */
if(arg->opcode == WSLAY_BINARY_FRAME) {
struct wslay_event_msg msgarg;
v_print_log(VRS_PRINT_DEBUG_MSG,
"WS Callback received binary message\n");
/* Copy received data to IO context */
memcpy(io_ctx->buf, arg->msg, arg->msg_length);
io_ctx->buf_size = arg->msg_length;
if(session->stream_conn->host_state == TCP_SERVER_STATE_STREAM_OPEN) {
if(v_STREAM_handle_messages(C) == 0) {
/* TODO: end connection */
return;
}
} else {
if( vs_handle_handshake(C, NULL) == -1 ) {
/* TODO: end connection */
return;
}
msgarg.opcode = WSLAY_BINARY_FRAME;
msgarg.msg = (uint8_t*)io_ctx->buf;
msgarg.msg_length = io_ctx->buf_size;
wslay_event_queue_msg(ctx, &msgarg);
}
} else if(arg->opcode == WSLAY_TEXT_FRAME) {
v_print_log(VRS_PRINT_ERROR, "WebSocket text frame is not supported\n");
return;
}
} else {
/* Print opcode of control message */
v_print_log(VRS_PRINT_DEBUG_MSG,
"WS Callback Received Ctrl Message: opcode: %d\n",
arg->opcode);
/* Is it closing message? */
if(arg->opcode & WSLAY_CONNECTION_CLOSE) {
v_print_log(VRS_PRINT_DEBUG_MSG,
"Close message with code: %d, message: %s\n",
arg->status_code,
arg->msg);
if(session->stream_conn->host_state == TCP_SERVER_STATE_CLOSING) {
session->stream_conn->host_state = TCP_SERVER_STATE_CLOSED;
} else {
session->stream_conn->host_state = TCP_SERVER_STATE_CLOSING;
wslay_event_queue_close(ctx,
WSLAY_CODE_NORMAL_CLOSURE,
(uint8_t*)"Closing connection",
15);
}
}
}
}
/**
* \brief WebSocket callback function for received message
*/
void vs_ws_recv_msg_callback(wslay_event_context_ptr wslay_ctx,
const struct wslay_event_on_msg_recv_arg *arg,
void *user_data)
{
struct vContext *C = (struct vContext*)user_data;
struct VS_CTX *vs_ctx = CTX_server_ctx(C);
struct VSession *session = CTX_current_session(C);
struct IO_CTX *io_ctx = CTX_io_ctx(C);
int ret;
if(!wslay_is_ctrl_frame(arg->opcode)) {
/* Verse server uses only binary message for communication */
if(arg->opcode == WSLAY_BINARY_FRAME) {
struct wslay_event_msg msgarg;
#if DEBUG_WEB_SOCKET
unsigned int i;
v_print_log(VRS_PRINT_DEBUG_MSG,
"WS Callback received binary message\n");
v_print_log(VRS_PRINT_DEBUG_MSG,
"Binary dump\n");
/* Print dump of received data */
for(i=0; i<arg->msg_length; i++) {
v_print_log_simple(VRS_PRINT_DEBUG_MSG, "%d,", arg->msg[i]);
}
v_print_log_simple(VRS_PRINT_DEBUG_MSG, "\n");
#endif
/* Copy received data to IO context */
memcpy(io_ctx->buf, arg->msg, arg->msg_length);
io_ctx->buf_size = arg->msg_length;
if(session->stream_conn->host_state == TCP_SERVER_STATE_STREAM_OPEN) {
if(v_STREAM_handle_messages(C) != 0) {
/* When some payload data were received, then poke data thread */
sem_post(vs_ctx->data.sem);
} else {
/* End connection */
session->stream_conn->host_state = TCP_SERVER_STATE_CLOSING;
/* Try to close connection with WebSocket client */
wslay_event_queue_close(wslay_ctx,
WSLAY_CODE_PROTOCOL_ERROR,
(uint8_t*)"Wrong command", /* Close message */
13); /* The length of close message */
return;
}
} else {
if( vs_handle_handshake(C) == -1 ) {
/* End connection */
session->stream_conn->host_state = TCP_SERVER_STATE_CLOSING;
/* Try to close connection with WebSocket client */
wslay_event_queue_close(wslay_ctx,
WSLAY_CODE_PROTOCOL_ERROR,
(uint8_t*)"Wrong command", /* Close message */
13); /* The length of close message */
return;
}
/* During handshake send response immediately. */
/* TODO: optionally send message fragmented, when it is needed using:
* wslay_event_queue_fragmented_msg() */
msgarg.opcode = WSLAY_BINARY_FRAME;
msgarg.msg = (uint8_t*)io_ctx->buf;
msgarg.msg_length = io_ctx->buf_size;
/* Queue message for sending */
if((ret = wslay_event_queue_msg(wslay_ctx, &msgarg)) != 0) {
v_print_log(VRS_PRINT_ERROR,
"Unable to queue message to WebSocket: %d\n", ret);
return;
} else {
v_print_log(VRS_PRINT_DEBUG_MSG,
"WebSocket message successfully queued\n");
}
}
} else if(arg->opcode == WSLAY_TEXT_FRAME) {
v_print_log(VRS_PRINT_ERROR, "WebSocket text frame is not supported\n");
return;
}
} else {
/* Print opcode of control message */
v_print_log(VRS_PRINT_DEBUG_MSG,
"WS Callback Received Ctrl Message: opcode: %d\n",
arg->opcode);
/* Is it closing message? */
if(arg->opcode & WSLAY_CONNECTION_CLOSE) {
v_print_log(VRS_PRINT_DEBUG_MSG,
"Close message with code: %d, message: %s\n",
arg->status_code,
arg->msg);
/* When this control message was received at second time, then
* switch to the state CLOSED. Otherwise switch to the state
* CLOSING */
if(session->stream_conn->host_state == TCP_SERVER_STATE_CLOSING) {
session->stream_conn->host_state = TCP_SERVER_STATE_CLOSED;
} else {
session->stream_conn->host_state = TCP_SERVER_STATE_CLOSING;
/* When server wasn't in the state closing, then send
* confirmation to the client, that this connection will be
* closed */
wslay_event_queue_close(wslay_ctx,
WSLAY_CODE_NORMAL_CLOSURE,
(uint8_t*)"Closing connection",
15);
}
}
}
}