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