| 1 | #ifndef HEADER_CURL_MULTIHANDLE_H
|
|---|
| 2 | #define HEADER_CURL_MULTIHANDLE_H
|
|---|
| 3 | /***************************************************************************
|
|---|
| 4 | * _ _ ____ _
|
|---|
| 5 | * Project ___| | | | _ \| |
|
|---|
| 6 | * / __| | | | |_) | |
|
|---|
| 7 | * | (__| |_| | _ <| |___
|
|---|
| 8 | * \___|\___/|_| \_\_____|
|
|---|
| 9 | *
|
|---|
| 10 | * Copyright (C) 1998 - 2018, Daniel Stenberg, <[email protected]>, 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 "conncache.h"
|
|---|
| 26 | #include "psl.h"
|
|---|
| 27 |
|
|---|
| 28 | struct Curl_message {
|
|---|
| 29 | struct curl_llist_element list;
|
|---|
| 30 | /* the 'CURLMsg' is the part that is visible to the external user */
|
|---|
| 31 | struct CURLMsg extmsg;
|
|---|
| 32 | };
|
|---|
| 33 |
|
|---|
| 34 | /* NOTE: if you add a state here, add the name to the statename[] array as
|
|---|
| 35 | well!
|
|---|
| 36 | */
|
|---|
| 37 | typedef enum {
|
|---|
| 38 | CURLM_STATE_INIT, /* 0 - start in this state */
|
|---|
| 39 | CURLM_STATE_CONNECT_PEND, /* 1 - no connections, waiting for one */
|
|---|
| 40 | CURLM_STATE_CONNECT, /* 2 - resolve/connect has been sent off */
|
|---|
| 41 | CURLM_STATE_WAITRESOLVE, /* 3 - awaiting the resolve to finalize */
|
|---|
| 42 | CURLM_STATE_WAITCONNECT, /* 4 - awaiting the TCP connect to finalize */
|
|---|
| 43 | CURLM_STATE_WAITPROXYCONNECT, /* 5 - awaiting HTTPS proxy SSL initialization
|
|---|
| 44 | to complete and/or proxy CONNECT to
|
|---|
| 45 | finalize */
|
|---|
| 46 | CURLM_STATE_SENDPROTOCONNECT, /* 6 - initiate protocol connect procedure */
|
|---|
| 47 | CURLM_STATE_PROTOCONNECT, /* 7 - completing the protocol-specific connect
|
|---|
| 48 | phase */
|
|---|
| 49 | CURLM_STATE_WAITDO, /* 8 - wait for our turn to send the request */
|
|---|
| 50 | CURLM_STATE_DO, /* 9 - start send off the request (part 1) */
|
|---|
| 51 | CURLM_STATE_DOING, /* 10 - sending off the request (part 1) */
|
|---|
| 52 | CURLM_STATE_DO_MORE, /* 11 - send off the request (part 2) */
|
|---|
| 53 | CURLM_STATE_DO_DONE, /* 12 - done sending off request */
|
|---|
| 54 | CURLM_STATE_WAITPERFORM, /* 13 - wait for our turn to read the response */
|
|---|
| 55 | CURLM_STATE_PERFORM, /* 14 - transfer data */
|
|---|
| 56 | CURLM_STATE_TOOFAST, /* 15 - wait because limit-rate exceeded */
|
|---|
| 57 | CURLM_STATE_DONE, /* 16 - post data transfer operation */
|
|---|
| 58 | CURLM_STATE_COMPLETED, /* 17 - operation complete */
|
|---|
| 59 | CURLM_STATE_MSGSENT, /* 18 - the operation complete message is sent */
|
|---|
| 60 | CURLM_STATE_LAST /* 19 - not a true state, never use this */
|
|---|
| 61 | } CURLMstate;
|
|---|
| 62 |
|
|---|
| 63 | /* we support N sockets per easy handle. Set the corresponding bit to what
|
|---|
| 64 | action we should wait for */
|
|---|
| 65 | #define MAX_SOCKSPEREASYHANDLE 5
|
|---|
| 66 | #define GETSOCK_READABLE (0x00ff)
|
|---|
| 67 | #define GETSOCK_WRITABLE (0xff00)
|
|---|
| 68 |
|
|---|
| 69 | #define CURLPIPE_ANY (CURLPIPE_HTTP1 | CURLPIPE_MULTIPLEX)
|
|---|
| 70 |
|
|---|
| 71 | /* This is the struct known as CURLM on the outside */
|
|---|
| 72 | struct Curl_multi {
|
|---|
| 73 | /* First a simple identifier to easier detect if a user mix up
|
|---|
| 74 | this multi handle with an easy handle. Set this to CURL_MULTI_HANDLE. */
|
|---|
| 75 | long type;
|
|---|
| 76 |
|
|---|
| 77 | /* We have a doubly-linked circular list with easy handles */
|
|---|
| 78 | struct Curl_easy *easyp;
|
|---|
| 79 | struct Curl_easy *easylp; /* last node */
|
|---|
| 80 |
|
|---|
| 81 | int num_easy; /* amount of entries in the linked list above. */
|
|---|
| 82 | int num_alive; /* amount of easy handles that are added but have not yet
|
|---|
| 83 | reached COMPLETE state */
|
|---|
| 84 |
|
|---|
| 85 | struct curl_llist msglist; /* a list of messages from completed transfers */
|
|---|
| 86 |
|
|---|
| 87 | struct curl_llist pending; /* Curl_easys that are in the
|
|---|
| 88 | CURLM_STATE_CONNECT_PEND state */
|
|---|
| 89 |
|
|---|
| 90 | /* callback function and user data pointer for the *socket() API */
|
|---|
| 91 | curl_socket_callback socket_cb;
|
|---|
| 92 | void *socket_userp;
|
|---|
| 93 |
|
|---|
| 94 | /* callback function and user data pointer for server push */
|
|---|
| 95 | curl_push_callback push_cb;
|
|---|
| 96 | void *push_userp;
|
|---|
| 97 |
|
|---|
| 98 | /* Hostname cache */
|
|---|
| 99 | struct curl_hash hostcache;
|
|---|
| 100 |
|
|---|
| 101 | #ifdef USE_LIBPSL
|
|---|
| 102 | /* PSL cache. */
|
|---|
| 103 | struct PslCache psl;
|
|---|
| 104 | #endif
|
|---|
| 105 |
|
|---|
| 106 | /* timetree points to the splay-tree of time nodes to figure out expire
|
|---|
| 107 | times of all currently set timers */
|
|---|
| 108 | struct Curl_tree *timetree;
|
|---|
| 109 |
|
|---|
| 110 | /* 'sockhash' is the lookup hash for socket descriptor => easy handles (note
|
|---|
| 111 | the pluralis form, there can be more than one easy handle waiting on the
|
|---|
| 112 | same actual socket) */
|
|---|
| 113 | struct curl_hash sockhash;
|
|---|
| 114 |
|
|---|
| 115 | /* pipelining wanted bits (CURLPIPE*) */
|
|---|
| 116 | long pipelining;
|
|---|
| 117 |
|
|---|
| 118 | bool recheckstate; /* see Curl_multi_connchanged */
|
|---|
| 119 |
|
|---|
| 120 | /* Shared connection cache (bundles)*/
|
|---|
| 121 | struct conncache conn_cache;
|
|---|
| 122 |
|
|---|
| 123 | long maxconnects; /* if >0, a fixed limit of the maximum number of entries
|
|---|
| 124 | we're allowed to grow the connection cache to */
|
|---|
| 125 |
|
|---|
| 126 | long max_host_connections; /* if >0, a fixed limit of the maximum number
|
|---|
| 127 | of connections per host */
|
|---|
| 128 |
|
|---|
| 129 | long max_total_connections; /* if >0, a fixed limit of the maximum number
|
|---|
| 130 | of connections in total */
|
|---|
| 131 |
|
|---|
| 132 | long max_pipeline_length; /* if >0, maximum number of requests in a
|
|---|
| 133 | pipeline */
|
|---|
| 134 |
|
|---|
| 135 | long content_length_penalty_size; /* a connection with a
|
|---|
| 136 | content-length bigger than
|
|---|
| 137 | this is not considered
|
|---|
| 138 | for pipelining */
|
|---|
| 139 |
|
|---|
| 140 | long chunk_length_penalty_size; /* a connection with a chunk length
|
|---|
| 141 | bigger than this is not
|
|---|
| 142 | considered for pipelining */
|
|---|
| 143 |
|
|---|
| 144 | struct curl_llist pipelining_site_bl; /* List of sites that are blacklisted
|
|---|
| 145 | from pipelining */
|
|---|
| 146 |
|
|---|
| 147 | struct curl_llist pipelining_server_bl; /* List of server types that are
|
|---|
| 148 | blacklisted from pipelining */
|
|---|
| 149 |
|
|---|
| 150 | /* timer callback and user data pointer for the *socket() API */
|
|---|
| 151 | curl_multi_timer_callback timer_cb;
|
|---|
| 152 | void *timer_userp;
|
|---|
| 153 | struct curltime timer_lastcall; /* the fixed time for the timeout for the
|
|---|
| 154 | previous callback */
|
|---|
| 155 | bool in_callback; /* true while executing a callback */
|
|---|
| 156 | };
|
|---|
| 157 |
|
|---|
| 158 | #endif /* HEADER_CURL_MULTIHANDLE_H */
|
|---|
