annotate mupdf-source/thirdparty/curl/lib/multihandle.h @ 46:7ee69f120f19 default tip

>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
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1 #ifndef HEADER_CURL_MULTIHANDLE_H
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2 #define HEADER_CURL_MULTIHANDLE_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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25 #include "conncache.h"
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26 #include "psl.h"
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28 struct Curl_message {
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29 struct curl_llist_element list;
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30 /* the 'CURLMsg' is the part that is visible to the external user */
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31 struct CURLMsg extmsg;
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32 };
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34 /* NOTE: if you add a state here, add the name to the statename[] array as
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35 well!
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36 */
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37 typedef enum {
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38 CURLM_STATE_INIT, /* 0 - start in this state */
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39 CURLM_STATE_CONNECT_PEND, /* 1 - no connections, waiting for one */
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40 CURLM_STATE_CONNECT, /* 2 - resolve/connect has been sent off */
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41 CURLM_STATE_WAITRESOLVE, /* 3 - awaiting the resolve to finalize */
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42 CURLM_STATE_WAITCONNECT, /* 4 - awaiting the TCP connect to finalize */
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43 CURLM_STATE_WAITPROXYCONNECT, /* 5 - awaiting HTTPS proxy SSL initialization
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44 to complete and/or proxy CONNECT to
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45 finalize */
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46 CURLM_STATE_SENDPROTOCONNECT, /* 6 - initiate protocol connect procedure */
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47 CURLM_STATE_PROTOCONNECT, /* 7 - completing the protocol-specific connect
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48 phase */
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49 CURLM_STATE_DO, /* 8 - start send off the request (part 1) */
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50 CURLM_STATE_DOING, /* 9 - sending off the request (part 1) */
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51 CURLM_STATE_DO_MORE, /* 10 - send off the request (part 2) */
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52 CURLM_STATE_DO_DONE, /* 11 - done sending off request */
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53 CURLM_STATE_PERFORM, /* 12 - transfer data */
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54 CURLM_STATE_TOOFAST, /* 13 - wait because limit-rate exceeded */
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55 CURLM_STATE_DONE, /* 14 - post data transfer operation */
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56 CURLM_STATE_COMPLETED, /* 15 - operation complete */
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57 CURLM_STATE_MSGSENT, /* 16 - the operation complete message is sent */
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58 CURLM_STATE_LAST /* 17 - not a true state, never use this */
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59 } CURLMstate;
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60
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61 /* we support N sockets per easy handle. Set the corresponding bit to what
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62 action we should wait for */
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63 #define MAX_SOCKSPEREASYHANDLE 5
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64 #define GETSOCK_READABLE (0x00ff)
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65 #define GETSOCK_WRITABLE (0xff00)
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67 #define CURLPIPE_ANY (CURLPIPE_MULTIPLEX)
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68
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69 /* This is the struct known as CURLM on the outside */
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70 struct Curl_multi {
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71 /* First a simple identifier to easier detect if a user mix up
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72 this multi handle with an easy handle. Set this to CURL_MULTI_HANDLE. */
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73 long type;
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75 /* We have a doubly-linked circular list with easy handles */
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76 struct Curl_easy *easyp;
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77 struct Curl_easy *easylp; /* last node */
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78
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79 int num_easy; /* amount of entries in the linked list above. */
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80 int num_alive; /* amount of easy handles that are added but have not yet
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81 reached COMPLETE state */
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83 struct curl_llist msglist; /* a list of messages from completed transfers */
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85 struct curl_llist pending; /* Curl_easys that are in the
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86 CURLM_STATE_CONNECT_PEND state */
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88 /* callback function and user data pointer for the *socket() API */
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89 curl_socket_callback socket_cb;
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90 void *socket_userp;
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92 /* callback function and user data pointer for server push */
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93 curl_push_callback push_cb;
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94 void *push_userp;
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96 /* Hostname cache */
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97 struct curl_hash hostcache;
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98
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99 #ifdef USE_LIBPSL
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100 /* PSL cache. */
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101 struct PslCache psl;
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102 #endif
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103
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104 /* timetree points to the splay-tree of time nodes to figure out expire
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105 times of all currently set timers */
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106 struct Curl_tree *timetree;
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107
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108 /* 'sockhash' is the lookup hash for socket descriptor => easy handles (note
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109 the pluralis form, there can be more than one easy handle waiting on the
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110 same actual socket) */
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111 struct curl_hash sockhash;
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112
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113 /* multiplexing wanted */
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114 bool multiplexing;
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115
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116 bool recheckstate; /* see Curl_multi_connchanged */
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117
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118 /* Shared connection cache (bundles)*/
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119 struct conncache conn_cache;
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120
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121 long maxconnects; /* if >0, a fixed limit of the maximum number of entries
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122 we're allowed to grow the connection cache to */
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123
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124 long max_host_connections; /* if >0, a fixed limit of the maximum number
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125 of connections per host */
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126
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127 long max_total_connections; /* if >0, a fixed limit of the maximum number
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128 of connections in total */
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129
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130 /* timer callback and user data pointer for the *socket() API */
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131 curl_multi_timer_callback timer_cb;
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132 void *timer_userp;
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133 struct curltime timer_lastcall; /* the fixed time for the timeout for the
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134 previous callback */
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135 bool in_callback; /* true while executing a callback */
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136 };
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137
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138 #endif /* HEADER_CURL_MULTIHANDLE_H */