#ifndef HEADER_CURL_MULTIHANDLE_H #define HEADER_CURL_MULTIHANDLE_H /*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2018, 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" #include "psl.h" struct Curl_message { struct curl_llist_element list; /* 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; #ifdef USE_LIBPSL /* PSL cache. */ struct PslCache psl; #endif /* 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; 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 curltime timer_lastcall; /* the fixed time for the timeout for the previous callback */ bool in_callback; /* true while executing a callback */ }; #endif /* HEADER_CURL_MULTIHANDLE_H */