source: azure_iot_hub/trunk/curl-7.57.0/lib/multihandle.h@ 388

Last change on this file since 388 was 388, checked in by coas-nagasima, 5 years ago

Azure IoT Hub Device C SDK を使ったサンプルの追加
  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
  • Property svn:mime-type set to text/x-chdr
File size: 6.3 KB
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1#ifndef HEADER_CURL_MULTIHANDLE_H
2#define HEADER_CURL_MULTIHANDLE_H
3/***************************************************************************
4 * _ _ ____ _
5 * Project ___| | | | _ \| |
6 * / __| | | | |_) | |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
9 *
10 * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, 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
27struct Curl_message {
28 struct curl_llist_element list;
29 /* the 'CURLMsg' is the part that is visible to the external user */
30 struct CURLMsg extmsg;
31};
32
33/* NOTE: if you add a state here, add the name to the statename[] array as
34 well!
35*/
36typedef enum {
37 CURLM_STATE_INIT, /* 0 - start in this state */
38 CURLM_STATE_CONNECT_PEND, /* 1 - no connections, waiting for one */
39 CURLM_STATE_CONNECT, /* 2 - resolve/connect has been sent off */
40 CURLM_STATE_WAITRESOLVE, /* 3 - awaiting the resolve to finalize */
41 CURLM_STATE_WAITCONNECT, /* 4 - awaiting the TCP connect to finalize */
42 CURLM_STATE_WAITPROXYCONNECT, /* 5 - awaiting HTTPS proxy SSL initialization
43 to complete and/or proxy CONNECT to
44 finalize */
45 CURLM_STATE_SENDPROTOCONNECT, /* 6 - initiate protocol connect procedure */
46 CURLM_STATE_PROTOCONNECT, /* 7 - completing the protocol-specific connect
47 phase */
48 CURLM_STATE_WAITDO, /* 8 - wait for our turn to send the request */
49 CURLM_STATE_DO, /* 9 - start send off the request (part 1) */
50 CURLM_STATE_DOING, /* 10 - sending off the request (part 1) */
51 CURLM_STATE_DO_MORE, /* 11 - send off the request (part 2) */
52 CURLM_STATE_DO_DONE, /* 12 - done sending off request */
53 CURLM_STATE_WAITPERFORM, /* 13 - wait for our turn to read the response */
54 CURLM_STATE_PERFORM, /* 14 - transfer data */
55 CURLM_STATE_TOOFAST, /* 15 - wait because limit-rate exceeded */
56 CURLM_STATE_DONE, /* 16 - post data transfer operation */
57 CURLM_STATE_COMPLETED, /* 17 - operation complete */
58 CURLM_STATE_MSGSENT, /* 18 - the operation complete message is sent */
59 CURLM_STATE_LAST /* 19 - not a true state, never use this */
60} CURLMstate;
61
62/* we support N sockets per easy handle. Set the corresponding bit to what
63 action we should wait for */
64#define MAX_SOCKSPEREASYHANDLE 5
65#define GETSOCK_READABLE (0x00ff)
66#define GETSOCK_WRITABLE (0xff00)
67
68#define CURLPIPE_ANY (CURLPIPE_HTTP1 | CURLPIPE_MULTIPLEX)
69
70/* This is the struct known as CURLM on the outside */
71struct Curl_multi {
72 /* First a simple identifier to easier detect if a user mix up
73 this multi handle with an easy handle. Set this to CURL_MULTI_HANDLE. */
74 long type;
75
76 /* We have a doubly-linked circular list with easy handles */
77 struct Curl_easy *easyp;
78 struct Curl_easy *easylp; /* last node */
79
80 int num_easy; /* amount of entries in the linked list above. */
81 int num_alive; /* amount of easy handles that are added but have not yet
82 reached COMPLETE state */
83
84 struct curl_llist msglist; /* a list of messages from completed transfers */
85
86 struct curl_llist pending; /* Curl_easys that are in the
87 CURLM_STATE_CONNECT_PEND state */
88
89 /* callback function and user data pointer for the *socket() API */
90 curl_socket_callback socket_cb;
91 void *socket_userp;
92
93 /* callback function and user data pointer for server push */
94 curl_push_callback push_cb;
95 void *push_userp;
96
97 /* Hostname cache */
98 struct curl_hash hostcache;
99
100 /* timetree points to the splay-tree of time nodes to figure out expire
101 times of all currently set timers */
102 struct Curl_tree *timetree;
103
104 /* 'sockhash' is the lookup hash for socket descriptor => easy handles (note
105 the pluralis form, there can be more than one easy handle waiting on the
106 same actual socket) */
107 struct curl_hash sockhash;
108
109 /* pipelining wanted bits (CURLPIPE*) */
110 long pipelining;
111
112 bool recheckstate; /* see Curl_multi_connchanged */
113
114 /* Shared connection cache (bundles)*/
115 struct conncache conn_cache;
116
117 long maxconnects; /* if >0, a fixed limit of the maximum number of entries
118 we're allowed to grow the connection cache to */
119
120 long max_host_connections; /* if >0, a fixed limit of the maximum number
121 of connections per host */
122
123 long max_total_connections; /* if >0, a fixed limit of the maximum number
124 of connections in total */
125
126 long max_pipeline_length; /* if >0, maximum number of requests in a
127 pipeline */
128
129 long content_length_penalty_size; /* a connection with a
130 content-length bigger than
131 this is not considered
132 for pipelining */
133
134 long chunk_length_penalty_size; /* a connection with a chunk length
135 bigger than this is not
136 considered for pipelining */
137
138 struct curl_llist pipelining_site_bl; /* List of sites that are blacklisted
139 from pipelining */
140
141 struct curl_llist pipelining_server_bl; /* List of server types that are
142 blacklisted from pipelining */
143
144 /* timer callback and user data pointer for the *socket() API */
145 curl_multi_timer_callback timer_cb;
146 void *timer_userp;
147 struct curltime timer_lastcall; /* the fixed time for the timeout for the
148 previous callback */
149};
150
151#endif /* HEADER_CURL_MULTIHANDLE_H */
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