| #ifndef HEADER_CURL_MULTIHANDLE_H |
| #define HEADER_CURL_MULTIHANDLE_H |
| /*************************************************************************** |
| * _ _ ____ _ |
| * Project ___| | | | _ \| | |
| * / __| | | | |_) | | |
| * | (__| |_| | _ <| |___ |
| * \___|\___/|_| \_\_____| |
| * |
| * Copyright (C) 1998 - 2017, 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.haxx.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. |
| * |
| ***************************************************************************/ |
| |
| #include "conncache.h" |
| |
| struct Curl_message { |
| /* the 'CURLMsg' is the part that is visible to the external user */ |
| struct CURLMsg extmsg; |
| }; |
| |
| /* NOTE: if you add a state here, add the name to the statename[] array as |
| well! |
| */ |
| typedef enum { |
| CURLM_STATE_INIT, /* 0 - start in this state */ |
| CURLM_STATE_CONNECT_PEND, /* 1 - no connections, waiting for one */ |
| CURLM_STATE_CONNECT, /* 2 - resolve/connect has been sent off */ |
| CURLM_STATE_WAITRESOLVE, /* 3 - awaiting the resolve to finalize */ |
| CURLM_STATE_WAITCONNECT, /* 4 - awaiting the TCP connect to finalize */ |
| CURLM_STATE_WAITPROXYCONNECT, /* 5 - awaiting HTTPS proxy SSL initialization |
| to complete and/or proxy CONNECT to |
| finalize */ |
| CURLM_STATE_SENDPROTOCONNECT, /* 6 - initiate protocol connect procedure */ |
| CURLM_STATE_PROTOCONNECT, /* 7 - completing the protocol-specific connect |
| phase */ |
| CURLM_STATE_WAITDO, /* 8 - wait for our turn to send the request */ |
| CURLM_STATE_DO, /* 9 - start send off the request (part 1) */ |
| CURLM_STATE_DOING, /* 10 - sending off the request (part 1) */ |
| CURLM_STATE_DO_MORE, /* 11 - send off the request (part 2) */ |
| CURLM_STATE_DO_DONE, /* 12 - done sending off request */ |
| CURLM_STATE_WAITPERFORM, /* 13 - wait for our turn to read the response */ |
| CURLM_STATE_PERFORM, /* 14 - transfer data */ |
| CURLM_STATE_TOOFAST, /* 15 - wait because limit-rate exceeded */ |
| CURLM_STATE_DONE, /* 16 - post data transfer operation */ |
| CURLM_STATE_COMPLETED, /* 17 - operation complete */ |
| CURLM_STATE_MSGSENT, /* 18 - the operation complete message is sent */ |
| CURLM_STATE_LAST /* 19 - not a true state, never use this */ |
| } CURLMstate; |
| |
| /* we support N sockets per easy handle. Set the corresponding bit to what |
| action we should wait for */ |
| #define MAX_SOCKSPEREASYHANDLE 5 |
| #define GETSOCK_READABLE (0x00ff) |
| #define GETSOCK_WRITABLE (0xff00) |
| |
| #define CURLPIPE_ANY (CURLPIPE_HTTP1 | CURLPIPE_MULTIPLEX) |
| |
| /* This is the struct known as CURLM on the outside */ |
| struct Curl_multi { |
| /* First a simple identifier to easier detect if a user mix up |
| this multi handle with an easy handle. Set this to CURL_MULTI_HANDLE. */ |
| long type; |
| |
| /* We have a doubly-linked circular list with easy handles */ |
| struct Curl_easy *easyp; |
| struct Curl_easy *easylp; /* last node */ |
| |
| int num_easy; /* amount of entries in the linked list above. */ |
| int num_alive; /* amount of easy handles that are added but have not yet |
| reached COMPLETE state */ |
| |
| struct curl_llist msglist; /* a list of messages from completed transfers */ |
| |
| struct curl_llist pending; /* Curl_easys that are in the |
| CURLM_STATE_CONNECT_PEND state */ |
| |
| /* callback function and user data pointer for the *socket() API */ |
| curl_socket_callback socket_cb; |
| void *socket_userp; |
| |
| /* callback function and user data pointer for server push */ |
| curl_push_callback push_cb; |
| void *push_userp; |
| |
| /* Hostname cache */ |
| struct curl_hash hostcache; |
| |
| /* timetree points to the splay-tree of time nodes to figure out expire |
| times of all currently set timers */ |
| struct Curl_tree *timetree; |
| |
| /* 'sockhash' is the lookup hash for socket descriptor => easy handles (note |
| the pluralis form, there can be more than one easy handle waiting on the |
| same actual socket) */ |
| struct curl_hash sockhash; |
| |
| /* pipelining wanted bits (CURLPIPE*) */ |
| long pipelining; |
| |
| bool recheckstate; /* see Curl_multi_connchanged */ |
| |
| /* Shared connection cache (bundles)*/ |
| struct conncache conn_cache; |
| |
| /* This handle will be used for closing the cached connections in |
| curl_multi_cleanup() */ |
| struct Curl_easy *closure_handle; |
| |
| long maxconnects; /* if >0, a fixed limit of the maximum number of entries |
| we're allowed to grow the connection cache to */ |
| |
| long max_host_connections; /* if >0, a fixed limit of the maximum number |
| of connections per host */ |
| |
| long max_total_connections; /* if >0, a fixed limit of the maximum number |
| of connections in total */ |
| |
| long max_pipeline_length; /* if >0, maximum number of requests in a |
| pipeline */ |
| |
| long content_length_penalty_size; /* a connection with a |
| content-length bigger than |
| this is not considered |
| for pipelining */ |
| |
| long chunk_length_penalty_size; /* a connection with a chunk length |
| bigger than this is not |
| considered for pipelining */ |
| |
| struct curl_llist pipelining_site_bl; /* List of sites that are blacklisted |
| from pipelining */ |
| |
| struct curl_llist pipelining_server_bl; /* List of server types that are |
| blacklisted from pipelining */ |
| |
| /* timer callback and user data pointer for the *socket() API */ |
| curl_multi_timer_callback timer_cb; |
| void *timer_userp; |
| struct timeval timer_lastcall; /* the fixed time for the timeout for the |
| previous callback */ |
| }; |
| |
| #endif /* HEADER_CURL_MULTIHANDLE_H */ |
