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https://github.com/moparisthebest/curl
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be28223f35
Since all systems have inaccuracy in the timeout handling it is imperative that we add an inaccuracy margin to the general timeout and connecttimeout handling with the multi interface. This way, when the timeout fires we should be fairly sure that it has passed the timeout value and will be suitably detected. For cases where the timeout fire before the actual timeout, we would otherwise consume the timeout action and still not run the timeout code since the condition wasn't met. Reported-by: He Qin Bug: http://curl.haxx.se/bug/view.cgi?id=1298
107 lines
4.2 KiB
C
107 lines
4.2 KiB
C
#ifndef HEADER_CURL_MULTIIF_H
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#define HEADER_CURL_MULTIIF_H
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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/* See multi_socket() for the explanation of this constant. Counted in number
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of microseconds. */
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#ifdef WIN32
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#define MULTI_TIMEOUT_INACCURACY 40000
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#else
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#define MULTI_TIMEOUT_INACCURACY 3000
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#endif
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#define MULTI_TIMEOUT_INACCURACY_MS (MULTI_TIMEOUT_INACCURACY / 1000)
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/*
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* Prototypes for library-wide functions provided by multi.c
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*/
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void Curl_expire(struct SessionHandle *data, long milli);
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bool Curl_multi_pipeline_enabled(const struct Curl_multi* multi);
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void Curl_multi_handlePipeBreak(struct SessionHandle *data);
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/* Internal version of curl_multi_init() accepts size parameters for the
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socket and connection hashes */
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struct Curl_multi *Curl_multi_handle(int hashsize, int chashsize);
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/* the write bits start at bit 16 for the *getsock() bitmap */
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#define GETSOCK_WRITEBITSTART 16
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#define GETSOCK_BLANK 0 /* no bits set */
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/* set the bit for the given sock number to make the bitmap for writable */
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#define GETSOCK_WRITESOCK(x) (1 << (GETSOCK_WRITEBITSTART + (x)))
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/* set the bit for the given sock number to make the bitmap for readable */
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#define GETSOCK_READSOCK(x) (1 << (x))
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#ifdef DEBUGBUILD
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/*
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* Curl_multi_dump is not a stable public function, this is only meant to
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* allow easier tracking of the internal handle's state and what sockets
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* they use. Only for research and development DEBUGBUILD enabled builds.
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*/
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void Curl_multi_dump(const struct Curl_multi *multi_handle);
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#endif
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/* Update the current connection of a One_Easy handle */
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void Curl_multi_set_easy_connection(struct SessionHandle *handle,
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struct connectdata *conn);
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void Curl_multi_process_pending_handles(struct Curl_multi *multi);
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/* Return the value of the CURLMOPT_MAX_HOST_CONNECTIONS option */
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size_t Curl_multi_max_host_connections(struct Curl_multi *multi);
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/* Return the value of the CURLMOPT_MAX_PIPELINE_LENGTH option */
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size_t Curl_multi_max_pipeline_length(struct Curl_multi *multi);
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/* Return the value of the CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE option */
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curl_off_t Curl_multi_content_length_penalty_size(struct Curl_multi *multi);
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/* Return the value of the CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE option */
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curl_off_t Curl_multi_chunk_length_penalty_size(struct Curl_multi *multi);
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/* Return the value of the CURLMOPT_PIPELINING_SITE_BL option */
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struct curl_llist *Curl_multi_pipelining_site_bl(struct Curl_multi *multi);
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/* Return the value of the CURLMOPT_PIPELINING_SERVER_BL option */
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struct curl_llist *Curl_multi_pipelining_server_bl(struct Curl_multi *multi);
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/* Return the value of the CURLMOPT_MAX_TOTAL_CONNECTIONS option */
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size_t Curl_multi_max_total_connections(struct Curl_multi *multi);
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/*
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* Curl_multi_closed()
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*
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* Used by the connect code to tell the multi_socket code that one of the
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* sockets we were using have just been closed. This function will then
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* remove it from the sockethash for this handle to make the multi_socket API
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* behave properly, especially for the case when libcurl will create another
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* socket again and it gets the same file descriptor number.
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*/
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void Curl_multi_closed(struct connectdata *conn, curl_socket_t s);
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#endif /* HEADER_CURL_MULTIIF_H */
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