| 1 | #ifndef HEADER_CURL_WS_H
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| 2 | #define HEADER_CURL_WS_H
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| 3 | /***************************************************************************
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| 4 | * _ _ ____ _
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| 5 | * Project ___| | | | _ \| |
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| 6 | * / __| | | | |_) | |
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| 7 | * | (__| |_| | _ <| |___
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| 8 | * \___|\___/|_| \_\_____|
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| 9 | *
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| 10 | * Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
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| 11 | *
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| 12 | * This software is licensed as described in the file COPYING, which
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| 13 | * you should have received as part of this distribution. The terms
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| 14 | * are also available at https://curl.se/docs/copyright.html.
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| 15 | *
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| 16 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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| 17 | * copies of the Software, and permit persons to whom the Software is
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| 18 | * furnished to do so, under the terms of the COPYING file.
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| 19 | *
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| 20 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 21 | * KIND, either express or implied.
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| 22 | *
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| 23 | * SPDX-License-Identifier: curl
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| 24 | *
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| 25 | ***************************************************************************/
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| 26 | #include "curl_setup.h"
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| 27 |
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| 28 | #ifdef USE_WEBSOCKETS
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| 29 |
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| 30 | #ifdef USE_HYPER
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| 31 | #define REQTYPE void
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| 32 | #else
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| 33 | #define REQTYPE struct dynbuf
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| 34 | #endif
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| 35 |
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| 36 | /* this is the largest single fragment size we support */
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| 37 | #define MAX_WS_SIZE 65535
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| 38 |
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| 39 | /* part of 'struct HTTP', when used in the 'struct SingleRequest' in the
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| 40 | Curl_easy struct */
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| 41 | struct websocket {
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| 42 | bool contfragment; /* set TRUE if the previous fragment sent was not final */
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| 43 | unsigned char mask[4]; /* 32 bit mask for this connection */
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| 44 | struct Curl_easy *data; /* used for write callback handling */
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| 45 | struct dynbuf buf;
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| 46 | size_t usedbuf; /* number of leading bytes in 'buf' the most recent complete
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| 47 | websocket frame uses */
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| 48 | struct curl_ws_frame frame; /* the struct used for frame state */
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| 49 | curl_off_t oleft; /* outstanding number of payload bytes left from the
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| 50 | server */
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| 51 | size_t stillblen; /* number of bytes left in the buffer to deliver in
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| 52 | the next curl_ws_recv() call */
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| 53 | char *stillb; /* the stillblen pending bytes are here */
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| 54 | curl_off_t sleft; /* outstanding number of payload bytes left to send */
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| 55 | unsigned int xori; /* xor index */
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| 56 | };
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| 57 |
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| 58 | CURLcode Curl_ws_request(struct Curl_easy *data, REQTYPE *req);
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| 59 | CURLcode Curl_ws_accept(struct Curl_easy *data);
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| 60 |
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| 61 | size_t Curl_ws_writecb(char *buffer, size_t size, size_t nitems, void *userp);
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| 62 | void Curl_ws_done(struct Curl_easy *data);
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| 63 |
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| 64 | #else
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| 65 | #define Curl_ws_request(x,y) CURLE_OK
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| 66 | #define Curl_ws_done(x) Curl_nop_stmt
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| 67 | #endif
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| 68 |
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| 69 | #endif /* HEADER_CURL_WS_H */
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