1 #ifndef HEADER_CURL_HTTP2_H
2 #define HEADER_CURL_HTTP2_H
3 /***************************************************************************
4  *                                  _   _ ____  _
5  *  Project                     ___| | | |  _ \| |
6  *                             / __| | | | |_) | |
7  *                            | (__| |_| |  _ <| |___
8  *                             \___|\___/|_| \_\_____|
9  *
10  * Copyright (C) 1998 - 2020, 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.haxx.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  ***************************************************************************/
24 
25 #include "curl_setup.h"
26 
27 #ifdef USE_NGHTTP2
28 #include "http.h"
29 
30 /* value for MAX_CONCURRENT_STREAMS we use until we get an updated setting
31    from the peer */
32 #define DEFAULT_MAX_CONCURRENT_STREAMS 13
33 
34 /*
35  * Store nghttp2 version info in this buffer, Prefix with a space.  Return
36  * total length written.
37  */
38 int Curl_http2_ver(char *p, size_t len);
39 
40 const char *Curl_http2_strerror(uint32_t err);
41 
42 CURLcode Curl_http2_init(struct connectdata *conn);
43 void Curl_http2_init_state(struct UrlState *state);
44 void Curl_http2_init_userset(struct UserDefined *set);
45 CURLcode Curl_http2_request_upgrade(struct dynbuf *req,
46                                     struct connectdata *conn);
47 CURLcode Curl_http2_setup(struct connectdata *conn);
48 CURLcode Curl_http2_switched(struct connectdata *conn,
49                              const char *data, size_t nread);
50 /* called from http_setup_conn */
51 void Curl_http2_setup_conn(struct connectdata *conn);
52 void Curl_http2_setup_req(struct Curl_easy *data);
53 void Curl_http2_done(struct Curl_easy *data, bool premature);
54 CURLcode Curl_http2_done_sending(struct connectdata *conn);
55 CURLcode Curl_http2_add_child(struct Curl_easy *parent,
56                               struct Curl_easy *child,
57                               bool exclusive);
58 void Curl_http2_remove_child(struct Curl_easy *parent,
59                              struct Curl_easy *child);
60 void Curl_http2_cleanup_dependencies(struct Curl_easy *data);
61 CURLcode Curl_http2_stream_pause(struct Curl_easy *data, bool pause);
62 
63 /* returns true if the HTTP/2 stream error was HTTP_1_1_REQUIRED */
64 bool Curl_h2_http_1_1_error(struct connectdata *conn);
65 #else /* USE_NGHTTP2 */
66 #define Curl_http2_request_upgrade(x,y) CURLE_UNSUPPORTED_PROTOCOL
67 #define Curl_http2_setup(x) CURLE_UNSUPPORTED_PROTOCOL
68 #define Curl_http2_switched(x,y,z) CURLE_UNSUPPORTED_PROTOCOL
69 #define Curl_http2_setup_conn(x) Curl_nop_stmt
70 #define Curl_http2_setup_req(x)
71 #define Curl_http2_init_state(x)
72 #define Curl_http2_init_userset(x)
73 #define Curl_http2_done(x,y)
74 #define Curl_http2_done_sending(x)
75 #define Curl_http2_add_child(x, y, z)
76 #define Curl_http2_remove_child(x, y)
77 #define Curl_http2_cleanup_dependencies(x)
78 #define Curl_http2_stream_pause(x, y)
79 #define Curl_h2_http_1_1_error(x) 0
80 #endif
81 
82 #endif /* HEADER_CURL_HTTP2_H */
83