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/*
* Wslay - The WebSocket Library
*
* Copyright (c) 2011, 2012 Tatsuhiro Tsujikawa
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef WSLAY_EVENT_H
#define WSLAY_EVENT_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <wslay/wslay.h>
struct wslay_stack;
struct wslay_queue;
struct wslay_event_byte_chunk {
uint8_t *data;
size_t data_length;
};
struct wslay_event_imsg {
uint8_t fin;
uint8_t rsv;
uint8_t opcode;
uint32_t utf8state;
struct wslay_queue *chunks;
size_t msg_length;
};
enum wslay_event_msg_type {
WSLAY_NON_FRAGMENTED,
WSLAY_FRAGMENTED
};
struct wslay_event_omsg {
uint8_t fin;
uint8_t opcode;
uint8_t rsv;
enum wslay_event_msg_type type;
uint8_t *data;
size_t data_length;
union wslay_event_msg_source source;
wslay_event_fragmented_msg_callback read_callback;
};
struct wslay_event_frame_user_data {
wslay_event_context_ptr ctx;
void *user_data;
};
enum wslay_event_close_status {
WSLAY_CLOSE_RECEIVED = 1 << 0,
WSLAY_CLOSE_QUEUED = 1 << 1,
WSLAY_CLOSE_SENT = 1 << 2
};
enum wslay_event_config {
WSLAY_CONFIG_NO_BUFFERING = 1 << 0
};
struct wslay_event_context {
/* config status, bitwise OR of enum wslay_event_config values*/
uint32_t config;
/* maximum message length that can be received */
uint64_t max_recv_msg_length;
/* 1 if initialized for server, otherwise 0 */
uint8_t server;
/* bitwise OR of enum wslay_event_close_status values */
uint8_t close_status;
/* status code in received close control frame */
uint16_t status_code_recv;
/* status code in sent close control frame */
uint16_t status_code_sent;
wslay_frame_context_ptr frame_ctx;
/* 1 if reading is enabled, otherwise 0. Upon receiving close
control frame this value set to 0. If any errors in read
operation will also set this value to 0. */
uint8_t read_enabled;
/* 1 if writing is enabled, otherwise 0 Upon completing sending
close control frame, this value set to 0. If any errors in write
opration will also set this value to 0. */
uint8_t write_enabled;
/* imsg buffer to allow interleaved control frame between
non-control frames. */
struct wslay_event_imsg imsgs[2];
/* Pointer to imsgs to indicate current used buffer. */
struct wslay_event_imsg *imsg;
/* payload length of frame currently being received. */
uint64_t ipayloadlen;
/* next byte offset of payload currently being received. */
uint64_t ipayloadoff;
/* error value set by user callback */
int error;
/* Pointer to the message currently being sent. NULL if no message
is currently sent. */
struct wslay_event_omsg *omsg;
/* Queue for non-control frames */
struct wslay_queue/*<wslay_omsg*>*/ *send_queue;
/* Queue for control frames */
struct wslay_queue/*<wslay_omsg*>*/ *send_ctrl_queue;
/* Size of send_queue + size of send_ctrl_queue */
size_t queued_msg_count;
/* The sum of message length in send_queue */
size_t queued_msg_length;
/* Buffer used for fragmented messages */
uint8_t obuf[4096];
uint8_t *obuflimit;
uint8_t *obufmark;
/* payload length of frame currently being sent. */
uint64_t opayloadlen;
/* next byte offset of payload currently being sent. */
uint64_t opayloadoff;
struct wslay_event_callbacks callbacks;
struct wslay_event_frame_user_data frame_user_data;
void *user_data;
uint8_t allowed_rsv_bits;
};
#endif /* WSLAY_EVENT_H */
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