Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/lib/http.h @ 7:5ab937c03c27

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Apply full RELRO to all generated binaries. Also strip the generated binaries.
author Franz Glasner <fzglas.hg@dom66.de>
date Tue, 16 Sep 2025 12:37:32 +0200
parents b50eed0cc0ef
children
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1 #ifndef HEADER_CURL_HTTP_H
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2 #define HEADER_CURL_HTTP_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 - 2019, 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.haxx.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 ***************************************************************************/
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24 #include "curl_setup.h"
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26 #ifndef CURL_DISABLE_HTTP
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28 #ifdef USE_NGHTTP2
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29 #include <nghttp2/nghttp2.h>
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30 #endif
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32 extern const struct Curl_handler Curl_handler_http;
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34 #ifdef USE_SSL
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35 extern const struct Curl_handler Curl_handler_https;
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36 #endif
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38 /* Header specific functions */
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39 bool Curl_compareheader(const char *headerline, /* line to check */
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40 const char *header, /* header keyword _with_ colon */
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41 const char *content); /* content string to find */
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43 char *Curl_copy_header_value(const char *header);
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45 char *Curl_checkProxyheaders(const struct connectdata *conn,
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46 const char *thisheader);
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47 /* ------------------------------------------------------------------------- */
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48 /*
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49 * The add_buffer series of functions are used to build one large memory chunk
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50 * from repeated function invokes. Used so that the entire HTTP request can
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51 * be sent in one go.
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52 */
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53 struct Curl_send_buffer {
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54 char *buffer;
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55 size_t size_max;
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56 size_t size_used;
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57 };
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58 typedef struct Curl_send_buffer Curl_send_buffer;
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60 Curl_send_buffer *Curl_add_buffer_init(void);
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61 void Curl_add_buffer_free(Curl_send_buffer **inp);
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62 CURLcode Curl_add_bufferf(Curl_send_buffer **inp, const char *fmt, ...)
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63 WARN_UNUSED_RESULT;
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64 CURLcode Curl_add_buffer(Curl_send_buffer **inp, const void *inptr,
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65 size_t size) WARN_UNUSED_RESULT;
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66 CURLcode Curl_add_buffer_send(Curl_send_buffer **inp,
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67 struct connectdata *conn,
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68 curl_off_t *bytes_written,
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69 size_t included_body_bytes,
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70 int socketindex);
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71
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72 CURLcode Curl_add_timecondition(const struct connectdata *conn,
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73 Curl_send_buffer *buf);
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74 CURLcode Curl_add_custom_headers(struct connectdata *conn,
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75 bool is_connect,
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76 Curl_send_buffer *req_buffer);
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77 CURLcode Curl_http_compile_trailers(struct curl_slist *trailers,
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78 Curl_send_buffer **buffer,
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79 struct Curl_easy *handle);
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81 /* protocol-specific functions set up to be called by the main engine */
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82 CURLcode Curl_http(struct connectdata *conn, bool *done);
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83 CURLcode Curl_http_done(struct connectdata *, CURLcode, bool premature);
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84 CURLcode Curl_http_connect(struct connectdata *conn, bool *done);
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85
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86 /* The following functions are defined in http_chunks.c */
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87 void Curl_httpchunk_init(struct connectdata *conn);
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88 CHUNKcode Curl_httpchunk_read(struct connectdata *conn, char *datap,
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89 ssize_t length, ssize_t *wrote);
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91 /* These functions are in http.c */
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92 CURLcode Curl_http_input_auth(struct connectdata *conn, bool proxy,
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93 const char *auth);
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94 CURLcode Curl_http_auth_act(struct connectdata *conn);
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96 /* If only the PICKNONE bit is set, there has been a round-trip and we
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97 selected to use no auth at all. Ie, we actively select no auth, as opposed
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98 to not having one selected. The other CURLAUTH_* defines are present in the
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99 public curl/curl.h header. */
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100 #define CURLAUTH_PICKNONE (1<<30) /* don't use auth */
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101
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102 /* MAX_INITIAL_POST_SIZE indicates the number of bytes that will make the POST
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103 data get included in the initial data chunk sent to the server. If the
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104 data is larger than this, it will automatically get split up in multiple
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105 system calls.
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106
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107 This value used to be fairly big (100K), but we must take into account that
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108 if the server rejects the POST due for authentication reasons, this data
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109 will always be unconditionally sent and thus it may not be larger than can
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110 always be afforded to send twice.
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111
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112 It must not be greater than 64K to work on VMS.
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113 */
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114 #ifndef MAX_INITIAL_POST_SIZE
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115 #define MAX_INITIAL_POST_SIZE (64*1024)
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116 #endif
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117
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118 /* EXPECT_100_THRESHOLD is the request body size limit for when libcurl will
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119 * automatically add an "Expect: 100-continue" header in HTTP requests. When
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120 * the size is unknown, it will always add it.
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121 *
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122 */
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123 #ifndef EXPECT_100_THRESHOLD
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124 #define EXPECT_100_THRESHOLD 1024
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125 #endif
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126
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127 #endif /* CURL_DISABLE_HTTP */
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128
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129 #ifdef USE_NGHTTP3
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130 struct h3out; /* see ngtcp2 */
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131 #endif
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132
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133 /****************************************************************************
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134 * HTTP unique setup
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135 ***************************************************************************/
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136 struct HTTP {
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137 curl_mimepart *sendit;
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138 curl_off_t postsize; /* off_t to handle large file sizes */
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139 const char *postdata;
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140
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141 const char *p_pragma; /* Pragma: string */
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142 const char *p_accept; /* Accept: string */
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143
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144 /* For FORM posting */
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145 curl_mimepart form;
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146
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147 struct back {
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148 curl_read_callback fread_func; /* backup storage for fread pointer */
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149 void *fread_in; /* backup storage for fread_in pointer */
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150 const char *postdata;
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151 curl_off_t postsize;
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152 } backup;
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153
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154 enum {
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155 HTTPSEND_NADA, /* init */
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156 HTTPSEND_REQUEST, /* sending a request */
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157 HTTPSEND_BODY, /* sending body */
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158 HTTPSEND_LAST /* never use this */
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159 } sending;
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160
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161 #ifndef CURL_DISABLE_HTTP
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162 Curl_send_buffer *send_buffer; /* used if the request couldn't be sent in
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163 one chunk, points to an allocated
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164 send_buffer struct */
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165 #endif
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166 #ifdef USE_NGHTTP2
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167 /*********** for HTTP/2 we store stream-local data here *************/
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168 int32_t stream_id; /* stream we are interested in */
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169
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170 bool bodystarted;
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171 /* We store non-final and final response headers here, per-stream */
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172 Curl_send_buffer *header_recvbuf;
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173 size_t nread_header_recvbuf; /* number of bytes in header_recvbuf fed into
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174 upper layer */
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175 Curl_send_buffer *trailer_recvbuf;
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176 int status_code; /* HTTP status code */
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177 const uint8_t *pausedata; /* pointer to data received in on_data_chunk */
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178 size_t pauselen; /* the number of bytes left in data */
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179 bool close_handled; /* TRUE if stream closure is handled by libcurl */
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180
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181 char **push_headers; /* allocated array */
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182 size_t push_headers_used; /* number of entries filled in */
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183 size_t push_headers_alloc; /* number of entries allocated */
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184 #endif
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185 #if defined(USE_NGHTTP2) || defined(USE_NGHTTP3)
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186 bool closed; /* TRUE on HTTP2 stream close */
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187 char *mem; /* points to a buffer in memory to store received data */
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188 size_t len; /* size of the buffer 'mem' points to */
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189 size_t memlen; /* size of data copied to mem */
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190 #endif
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191 #if defined(USE_NGHTTP2) || defined(ENABLE_QUIC)
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192 /* fields used by both HTTP/2 and HTTP/3 */
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193 const uint8_t *upload_mem; /* points to a buffer to read from */
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194 size_t upload_len; /* size of the buffer 'upload_mem' points to */
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195 curl_off_t upload_left; /* number of bytes left to upload */
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196 #endif
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197
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198 #ifdef ENABLE_QUIC
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199 /*********** for HTTP/3 we store stream-local data here *************/
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200 int64_t stream3_id; /* stream we are interested in */
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201 bool firstbody; /* FALSE until body arrives */
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202 bool h3req; /* FALSE until request is issued */
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203 bool upload_done;
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204 #endif
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205 #ifdef USE_NGHTTP3
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206 struct h3out *h3out; /* per-stream buffers for upload */
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207 #endif
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208 };
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209
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210 #ifdef USE_NGHTTP2
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211 /* h2 settings for this connection */
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212 struct h2settings {
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213 uint32_t max_concurrent_streams;
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214 bool enable_push;
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215 };
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216 #endif
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217
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218 struct http_conn {
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219 #ifdef USE_NGHTTP2
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220 #define H2_BINSETTINGS_LEN 80
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221 nghttp2_session *h2;
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222 uint8_t binsettings[H2_BINSETTINGS_LEN];
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223 size_t binlen; /* length of the binsettings data */
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224 Curl_send *send_underlying; /* underlying send Curl_send callback */
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225 Curl_recv *recv_underlying; /* underlying recv Curl_recv callback */
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226 char *inbuf; /* buffer to receive data from underlying socket */
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227 size_t inbuflen; /* number of bytes filled in inbuf */
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228 size_t nread_inbuf; /* number of bytes read from in inbuf */
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229 /* We need separate buffer for transmission and reception because we
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230 may call nghttp2_session_send() after the
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231 nghttp2_session_mem_recv() but mem buffer is still not full. In
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232 this case, we wrongly sends the content of mem buffer if we share
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233 them for both cases. */
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234 int32_t pause_stream_id; /* stream ID which paused
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235 nghttp2_session_mem_recv */
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236 size_t drain_total; /* sum of all stream's UrlState.drain */
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237
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238 /* this is a hash of all individual streams (Curl_easy structs) */
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239 struct h2settings settings;
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240
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241 /* list of settings that will be sent */
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242 nghttp2_settings_entry local_settings[3];
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243 size_t local_settings_num;
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244 uint32_t error_code; /* HTTP/2 error code */
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245 #else
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246 int unused; /* prevent a compiler warning */
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247 #endif
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248 };
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249
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250 CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
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251 struct connectdata *conn,
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252 ssize_t *nread,
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253 bool *stop_reading);
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254
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255 /**
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256 * Curl_http_output_auth() setups the authentication headers for the
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257 * host/proxy and the correct authentication
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258 * method. conn->data->state.authdone is set to TRUE when authentication is
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259 * done.
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260 *
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261 * @param conn all information about the current connection
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262 * @param request pointer to the request keyword
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263 * @param path pointer to the requested path
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264 * @param proxytunnel boolean if this is the request setting up a "proxy
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265 * tunnel"
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266 *
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267 * @returns CURLcode
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268 */
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269 CURLcode
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270 Curl_http_output_auth(struct connectdata *conn,
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271 const char *request,
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272 const char *path,
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273 bool proxytunnel); /* TRUE if this is the request setting
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274 up the proxy tunnel */
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275
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276 #endif /* HEADER_CURL_HTTP_H */