1 #ifndef HEADER_CURL_WS_H 2 #define HEADER_CURL_WS_H 3 /*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 11 * 12 * This software is licensed as described in the file COPYING, which 13 * you should have received as part of this distribution. The terms 14 * are also available at https://curl.se/docs/copyright.html. 15 * 16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 17 * copies of the Software, and permit persons to whom the Software is 18 * furnished to do so, under the terms of the COPYING file. 19 * 20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 21 * KIND, either express or implied. 22 * 23 * SPDX-License-Identifier: curl 24 * 25 ***************************************************************************/ 26 #include "curl_setup.h" 27 28 #ifdef USE_WEBSOCKETS 29 30 #ifdef USE_HYPER 31 #define REQTYPE void 32 #else 33 #define REQTYPE struct dynbuf 34 #endif 35 36 /* this is the largest single fragment size we support */ 37 #define MAX_WS_SIZE 65535 38 39 /* part of 'struct HTTP', when used in the 'struct SingleRequest' in the 40 Curl_easy struct */ 41 struct websocket { 42 bool contfragment; /* set TRUE if the previous fragment sent was not final */ 43 unsigned char mask[4]; /* 32 bit mask for this connection */ 44 struct Curl_easy *data; /* used for write callback handling */ 45 struct dynbuf buf; 46 size_t usedbuf; /* number of leading bytes in 'buf' the most recent complete 47 websocket frame uses */ 48 struct curl_ws_frame frame; /* the struct used for frame state */ 49 size_t stillblen; /* number of bytes left in the buffer to deliver in 50 the next curl_ws_recv() call */ 51 const char *stillb; /* the stillblen pending bytes are here */ 52 curl_off_t sleft; /* outstanding number of payload bytes left to send */ 53 unsigned int xori; /* xor index */ 54 }; 55 56 struct ws_conn { 57 struct dynbuf early; /* data already read when switching to ws */ 58 }; 59 60 CURLcode Curl_ws_request(struct Curl_easy *data, REQTYPE *req); 61 CURLcode Curl_ws_accept(struct Curl_easy *data, const char *mem, size_t len); 62 size_t Curl_ws_writecb(char *buffer, size_t size, size_t nitems, void *userp); 63 void Curl_ws_done(struct Curl_easy *data); 64 CURLcode Curl_ws_disconnect(struct Curl_easy *data, 65 struct connectdata *conn, 66 bool dead_connection); 67 #else 68 #define Curl_ws_request(x,y) CURLE_OK 69 #define Curl_ws_done(x) Curl_nop_stmt 70 #define Curl_ws_free(x) Curl_nop_stmt 71 #endif 72 73 #endif /* HEADER_CURL_WS_H */ 74