113 lines
3.7 KiB
C
113 lines
3.7 KiB
C
/*
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* Copyright (c) 2012, Thingsquare, http://www.thingsquare.com/.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef WEBSOCKET_H
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#define WEBSOCKET_H
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#include "websocket-http-client.h"
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typedef enum {
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WEBSOCKET_ERR = 0,
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WEBSOCKET_OK = 1,
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WEBSOCKET_IN_PROGRESS = 2,
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WEBSOCKET_HOSTNAME_NOT_FOUND = 3,
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WEBSOCKET_CONNECTED = 4,
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WEBSOCKET_DATA = 5,
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WEBSOCKET_RESET = 6,
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WEBSOCKET_TIMEDOUT = 7,
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WEBSOCKET_CLOSED = 8,
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WEBSOCKET_PINGED = 9,
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WEBSOCKET_DATA_RECEIVED = 10,
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WEBSOCKET_PONG_RECEIVED = 11,
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} websocket_result_t;
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struct websocket;
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typedef void (* websocket_callback)(struct websocket *s,
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websocket_result_t result,
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const uint8_t *data,
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uint16_t datalen);
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#ifdef WEBSOCKET_CONF_MAX_MSGLEN
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#define WEBSOCKET_MAX_MSGLEN WEBSOCKET_CONF_MAX_MSGLEN
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#else /* WEBSOCKET_CONF_MAX_MSGLEN */
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#define WEBSOCKET_MAX_MSGLEN 200
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#endif /* WEBSOCKET_CONF_MAX_MSGLEN */
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struct websocket {
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struct websocket *next; /* Must be first. */
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struct websocket_http_client_state s;
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websocket_callback callback;
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uint8_t mask[4];
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uint32_t left, len;
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uint8_t opcode;
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uint8_t state;
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uint8_t headercacheptr;
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uint8_t headercache[10]; /* The maximum websocket header + mask is 6
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+ 4 bytes long */
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};
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enum {
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WEBSOCKET_STATE_CLOSED = 0,
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WEBSOCKET_STATE_DNS_REQUEST_SENT = 1,
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WEBSOCKET_STATE_HTTP_REQUEST_SENT = 2,
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WEBSOCKET_STATE_WAITING_FOR_HEADER = 3,
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WEBSOCKET_STATE_RECEIVING_HEADER = 4,
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WEBSOCKET_STATE_HEADER_RECEIVED = 5,
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WEBSOCKET_STATE_RECEIVING_DATA = 6,
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};
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void websocket_init(struct websocket *s);
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void websocket_set_proxy(struct websocket *s,
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const uip_ipaddr_t *addr, uint16_t port);
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websocket_result_t websocket_open(struct websocket *s,
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const char *url,
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const char *subprotocol,
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const char *hdr,
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websocket_callback c);
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int websocket_send(struct websocket *s,
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const uint8_t *data, uint16_t datalen);
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int websocket_send_str(struct websocket *s,
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const char *strptr);
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void websocket_close(struct websocket *s);
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int websocket_ping(struct websocket *s);
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int websocket_queuelen(struct websocket *s);
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#endif /* WEBSOCKET_H */
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