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/*
* Copyright 2008-2016 Max Kellermann <max.kellermann@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CURL_GLOBAL_HXX
#define CURL_GLOBAL_HXX
#include "Multi.hxx"
#include "event/TimerEvent.hxx"
#include "event/DeferEvent.hxx"
class CurlSocket;
class CurlRequest;
/**
* Manager for the global CURLM object.
*/
class CurlGlobal final {
CurlMulti multi;
DeferEvent defer_read_info;
TimerEvent timeout_event;
public:
explicit CurlGlobal(EventLoop &_loop);
EventLoop &GetEventLoop() noexcept {
return timeout_event.GetEventLoop();
}
void Add(CURL *easy, CurlRequest &request);
void Remove(CURL *easy) noexcept;
/**
* Check for finished HTTP responses.
*
* Runs in the I/O thread. The caller must not hold locks.
*/
void ReadInfo() noexcept;
void Assign(curl_socket_t fd, CurlSocket &cs) noexcept {
curl_multi_assign(multi.Get(), fd, &cs);
}
void SocketAction(curl_socket_t fd, int ev_bitmask) noexcept;
void InvalidateSockets() {
SocketAction(CURL_SOCKET_TIMEOUT, 0);
}
/**
* This is a kludge to allow pausing/resuming a stream with
* libcurl < 7.32.0. Read the curl_easy_pause manpage for
* more information.
*/
void ResumeSockets() {
int running_handles;
curl_multi_socket_all(multi.Get(), &running_handles);
}
private:
void UpdateTimeout(long timeout_ms) noexcept;
static int TimerFunction(CURLM *global, long timeout_ms,
void *userp) noexcept;
/* callback for #timeout_event */
void OnTimeout() noexcept;
};
#endif
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