mirror of
https://github.com/curl/curl.git
synced 2024-12-03 06:20:31 +08:00
135 lines
5.4 KiB
C
135 lines
5.4 KiB
C
|
#ifndef HEADER_CURL_MULTIHANDLE_H
|
||
|
#define HEADER_CURL_MULTIHANDLE_H
|
||
|
/***************************************************************************
|
||
|
* _ _ ____ _
|
||
|
* Project ___| | | | _ \| |
|
||
|
* / __| | | | |_) | |
|
||
|
* | (__| |_| | _ <| |___
|
||
|
* \___|\___/|_| \_\_____|
|
||
|
*
|
||
|
* Copyright (C) 1998 - 2013, 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 http://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.
|
||
|
*
|
||
|
***************************************************************************/
|
||
|
|
||
|
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, /* 1 - resolve/connect has been sent off */
|
||
|
CURLM_STATE_WAITRESOLVE, /* 2 - awaiting the resolve to finalize */
|
||
|
CURLM_STATE_WAITCONNECT, /* 3 - awaiting the connect to finalize */
|
||
|
CURLM_STATE_WAITPROXYCONNECT, /* 4 - awaiting proxy CONNECT to finalize */
|
||
|
CURLM_STATE_PROTOCONNECT, /* 5 - completing the protocol-specific connect
|
||
|
phase */
|
||
|
CURLM_STATE_WAITDO, /* 6 - wait for our turn to send the request */
|
||
|
CURLM_STATE_DO, /* 7 - start send off the request (part 1) */
|
||
|
CURLM_STATE_DOING, /* 8 - sending off the request (part 1) */
|
||
|
CURLM_STATE_DO_MORE, /* 9 - send off the request (part 2) */
|
||
|
CURLM_STATE_DO_DONE, /* 10 - done sending off request */
|
||
|
CURLM_STATE_WAITPERFORM, /* 11 - wait for our turn to read the response */
|
||
|
CURLM_STATE_PERFORM, /* 12 - transfer data */
|
||
|
CURLM_STATE_TOOFAST, /* 13 - wait because limit-rate exceeded */
|
||
|
CURLM_STATE_DONE, /* 14 - post data transfer operation */
|
||
|
CURLM_STATE_COMPLETED, /* 15 - operation complete */
|
||
|
CURLM_STATE_MSGSENT, /* 16 - the operation complete message is sent */
|
||
|
CURLM_STATE_LAST /* 17 - 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)
|
||
|
|
||
|
struct Curl_one_easy {
|
||
|
/* first, two fields for the linked list of these */
|
||
|
struct Curl_one_easy *next;
|
||
|
struct Curl_one_easy *prev;
|
||
|
|
||
|
struct SessionHandle *easy_handle; /* the easy handle for this unit */
|
||
|
struct connectdata *easy_conn; /* the "unit's" connection */
|
||
|
|
||
|
CURLMstate state; /* the handle's state */
|
||
|
CURLcode result; /* previous result */
|
||
|
|
||
|
struct Curl_message msg; /* A single posted message. */
|
||
|
|
||
|
/* Array with the plain socket numbers this handle takes care of, in no
|
||
|
particular order. Note that all sockets are added to the sockhash, where
|
||
|
the state etc are also kept. This array is mostly used to detect when a
|
||
|
socket is to be removed from the hash. See singlesocket(). */
|
||
|
curl_socket_t sockets[MAX_SOCKSPEREASYHANDLE];
|
||
|
int numsocks;
|
||
|
};
|
||
|
|
||
|
/* 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_one_easy easy;
|
||
|
|
||
|
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 */
|
||
|
|
||
|
/* callback function and user data pointer for the *socket() API */
|
||
|
curl_socket_callback socket_cb;
|
||
|
void *socket_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;
|
||
|
|
||
|
/* Whether pipelining is enabled for this multi handle */
|
||
|
bool pipelining_enabled;
|
||
|
|
||
|
/* Shared connection cache (bundles)*/
|
||
|
struct conncache *conn_cache;
|
||
|
|
||
|
/* This handle will be used for closing the cached connections in
|
||
|
curl_multi_cleanup() */
|
||
|
struct SessionHandle *closure_handle;
|
||
|
|
||
|
long maxconnects; /* if >0, a fixed limit of the maximum number of entries
|
||
|
we're allowed to grow the connection cache to */
|
||
|
|
||
|
/* 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 */
|
||
|
|