| #ifndef HEADER_CURL_WS_H |
| #define HEADER_CURL_WS_H |
| /*************************************************************************** |
| * _ _ ____ _ |
| * Project ___| | | | _ \| | |
| * / __| | | | |_) | | |
| * | (__| |_| | _ <| |___ |
| * \___|\___/|_| \_\_____| |
| * |
| * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. |
| * |
| * This software is licensed as described in the file COPYING, which |
| * you should have received as part of this distribution. The terms |
| * are also available at https://curl.se/docs/copyright.html. |
| * |
| * You may opt to use, copy, modify, merge, publish, distribute and/or sell |
| * copies of the Software, and permit persons to whom the Software is |
| * furnished to do so, under the terms of the COPYING file. |
| * |
| * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| * KIND, either express or implied. |
| * |
| * SPDX-License-Identifier: curl |
| * |
| ***************************************************************************/ |
| #include "curl_setup.h" |
| |
| #if defined(USE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP) |
| |
| #ifdef USE_HYPER |
| #define REQTYPE void |
| #else |
| #define REQTYPE struct dynbuf |
| #endif |
| |
| /* a client-side WS frame decoder, parsing frame headers and |
| * payload, keeping track of current position and stats */ |
| enum ws_dec_state { |
| WS_DEC_INIT, |
| WS_DEC_HEAD, |
| WS_DEC_PAYLOAD |
| }; |
| |
| struct ws_decoder { |
| int frame_age; /* zero */ |
| int frame_flags; /* See the CURLWS_* defines */ |
| curl_off_t payload_offset; /* the offset parsing is at */ |
| curl_off_t payload_len; |
| unsigned char head[10]; |
| int head_len, head_total; |
| enum ws_dec_state state; |
| }; |
| |
| /* a client-side WS frame encoder, generating frame headers and |
| * converting payloads, tracking remaining data in current frame */ |
| struct ws_encoder { |
| curl_off_t payload_len; /* payload length of current frame */ |
| curl_off_t payload_remain; /* remaining payload of current */ |
| unsigned int xori; /* xor index */ |
| unsigned char mask[4]; /* 32 bit mask for this connection */ |
| unsigned char firstbyte; /* first byte of frame we encode */ |
| bool contfragment; /* set TRUE if the previous fragment sent was not final */ |
| }; |
| |
| /* A websocket connection with en- and decoder that treat frames |
| * and keep track of boundaries. */ |
| struct websocket { |
| struct Curl_easy *data; /* used for write callback handling */ |
| struct ws_decoder dec; /* decode of we frames */ |
| struct ws_encoder enc; /* decode of we frames */ |
| struct bufq recvbuf; /* raw data from the server */ |
| struct bufq sendbuf; /* raw data to be sent to the server */ |
| struct curl_ws_frame frame; /* the current WS FRAME received */ |
| }; |
| |
| CURLcode Curl_ws_request(struct Curl_easy *data, REQTYPE *req); |
| CURLcode Curl_ws_accept(struct Curl_easy *data, const char *mem, size_t len); |
| |
| extern const struct Curl_handler Curl_handler_ws; |
| #ifdef USE_SSL |
| extern const struct Curl_handler Curl_handler_wss; |
| #endif |
| |
| |
| #else |
| #define Curl_ws_request(x,y) CURLE_OK |
| #define Curl_ws_free(x) Curl_nop_stmt |
| #endif |
| |
| #endif /* HEADER_CURL_WS_H */ |