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-rw-r--r--src/input/CurlInputPlugin.cxx248
1 files changed, 138 insertions, 110 deletions
diff --git a/src/input/CurlInputPlugin.cxx b/src/input/CurlInputPlugin.cxx
index 800f7b1a3..d17937976 100644
--- a/src/input/CurlInputPlugin.cxx
+++ b/src/input/CurlInputPlugin.cxx
@@ -25,7 +25,8 @@
#include "ConfigData.hxx"
#include "tag/Tag.hxx"
#include "IcyMetaDataParser.hxx"
-#include "event/MultiSocketMonitor.hxx"
+#include "event/SocketMonitor.hxx"
+#include "event/TimeoutMonitor.hxx"
#include "event/Call.hxx"
#include "IOThread.hxx"
#include "util/ASCII.hxx"
@@ -178,10 +179,63 @@ struct input_curl {
input_curl &operator=(const input_curl &) = delete;
};
+class CurlMulti;
+
+/**
+ * Monitor for one socket created by CURL.
+ */
+class CurlSocket final : SocketMonitor {
+ CurlMulti &multi;
+
+public:
+ CurlSocket(CurlMulti &_multi, EventLoop &_loop, int _fd)
+ :SocketMonitor(_fd, _loop), multi(_multi) {}
+
+ ~CurlSocket() {
+ Abandon();
+ }
+
+ /**
+ * Callback function for CURLMOPT_SOCKETFUNCTION.
+ */
+ static int SocketFunction(CURL *easy,
+ curl_socket_t s, int action,
+ void *userp, void *socketp);
+
+ virtual bool OnSocketReady(unsigned flags) override;
+
+private:
+ static constexpr int FlagsToCurlCSelect(unsigned flags) {
+ return (flags & (READ | HANGUP) ? CURL_CSELECT_IN : 0) |
+ (flags & WRITE ? CURL_CSELECT_OUT : 0) |
+ (flags & ERROR ? CURL_CSELECT_ERR : 0);
+ }
+
+ gcc_const
+ static unsigned CurlPollToFlags(int action) {
+ switch (action) {
+ case CURL_POLL_NONE:
+ return 0;
+
+ case CURL_POLL_IN:
+ return READ;
+
+ case CURL_POLL_OUT:
+ return WRITE;
+
+ case CURL_POLL_INOUT:
+ return READ|WRITE;
+ }
+
+ assert(false);
+ gcc_unreachable();
+ }
+};
+
/**
* Manager for the global CURLM object.
*/
-class CurlMulti final : private MultiSocketMonitor {
+class CurlMulti final : private TimeoutMonitor {
CURLM *const multi;
public:
@@ -201,20 +255,20 @@ public:
*/
void ReadInfo();
- /**
- * Give control to CURL.
- *
- * Runs in the I/O thread. The caller must not hold locks.
- */
- void Perform();
+ void Assign(curl_socket_t fd, CurlSocket &cs) {
+ curl_multi_assign(multi, fd, &cs);
+ }
- using MultiSocketMonitor::InvalidateSockets;
+ void SocketAction(curl_socket_t fd, int ev_bitmask);
- void UpdateSockets();
+ void InvalidateSockets() {
+ SocketAction(CURL_SOCKET_TIMEOUT, 0);
+ }
private:
- virtual int PrepareSockets() override;
- virtual void DispatchSockets() override;
+ static int TimerFunction(CURLM *multi, long timeout_ms, void *userp);
+
+ virtual void OnTimeout() override;
};
/** libcurl should accept "ICY 200 OK" */
@@ -231,8 +285,14 @@ static constexpr Domain curl_domain("curl");
static constexpr Domain curlm_domain("curlm");
CurlMulti::CurlMulti(EventLoop &_loop, CURLM *_multi)
- :MultiSocketMonitor(_loop), multi(_multi)
+ :TimeoutMonitor(_loop), multi(_multi)
{
+ curl_multi_setopt(multi, CURLMOPT_SOCKETFUNCTION,
+ CurlSocket::SocketFunction);
+ curl_multi_setopt(multi, CURLMOPT_SOCKETDATA, this);
+
+ curl_multi_setopt(multi, CURLMOPT_TIMERFUNCTION, TimerFunction);
+ curl_multi_setopt(multi, CURLMOPT_TIMERDATA, this);
}
/**
@@ -266,73 +326,50 @@ input_curl_resume(struct input_curl *c)
}
}
-/**
- * Calculates the GLib event bit mask for one file descriptor,
- * obtained from three #fd_set objects filled by curl_multi_fdset().
- */
-static unsigned
-input_curl_fd_events(int fd, fd_set *rfds, fd_set *wfds, fd_set *efds)
-{
- unsigned events = 0;
+int
+CurlSocket::SocketFunction(gcc_unused CURL *easy,
+ curl_socket_t s, int action,
+ void *userp, void *socketp) {
+ CurlMulti &multi = *(CurlMulti *)userp;
+ CurlSocket *cs = (CurlSocket *)socketp;
- if (FD_ISSET(fd, rfds)) {
- events |= MultiSocketMonitor::READ | MultiSocketMonitor::HANGUP
- | MultiSocketMonitor::ERROR;
- FD_CLR(fd, rfds);
- }
+ assert(io_thread_inside());
- if (FD_ISSET(fd, wfds)) {
- events |= MultiSocketMonitor::WRITE |
- MultiSocketMonitor::ERROR;
- FD_CLR(fd, wfds);
+ if (action == CURL_POLL_REMOVE) {
+ delete cs;
+ return 0;
}
- if (FD_ISSET(fd, efds)) {
- events |= MultiSocketMonitor::HANGUP |
- MultiSocketMonitor::ERROR;
- FD_CLR(fd, efds);
+ if (cs == nullptr) {
+ cs = new CurlSocket(multi, io_thread_get(), s);
+ multi.Assign(s, *cs);
+ } else {
+#ifdef USE_EPOLL
+ /* when using epoll, we need to unregister the socket
+ each time this callback is invoked, because older
+ CURL versions may omit the CURL_POLL_REMOVE call
+ when the socket has been closed and recreated with
+ the same file number (bug found in CURL 7.26, CURL
+ 7.33 not affected); in that case, epoll refuses the
+ EPOLL_CTL_MOD because it does not know the new
+ socket yet */
+ cs->Cancel();
+#endif
}
- return events;
+ unsigned flags = CurlPollToFlags(action);
+ if (flags != 0)
+ cs->Schedule(flags);
+ return 0;
}
-/**
- * Updates all registered GPollFD objects, unregisters old ones,
- * registers new ones.
- *
- * Runs in the I/O thread. No lock needed.
- */
-inline void
-CurlMulti::UpdateSockets()
+bool
+CurlSocket::OnSocketReady(unsigned flags)
{
assert(io_thread_inside());
- fd_set rfds, wfds, efds;
-
- FD_ZERO(&rfds);
- FD_ZERO(&wfds);
- FD_ZERO(&efds);
-
- int max_fd;
- CURLMcode mcode = curl_multi_fdset(multi, &rfds, &wfds,
- &efds, &max_fd);
- if (mcode != CURLM_OK) {
- FormatError(curlm_domain,
- "curl_multi_fdset() failed: %s",
- curl_multi_strerror(mcode));
- return;
- }
-
- UpdateSocketList([&rfds, &wfds, &efds](int fd){
- return input_curl_fd_events(fd, &rfds,
- &wfds, &efds);
- });
-
- for (int fd = 0; fd <= max_fd; ++fd) {
- unsigned events = input_curl_fd_events(fd, &rfds, &wfds, &efds);
- if (events != 0)
- AddSocket(fd, events);
- }
+ multi.SocketAction(Get(), FlagsToCurlCSelect(flags));
+ return true;
}
/**
@@ -354,7 +391,6 @@ CurlMulti::Add(struct input_curl *c, Error &error)
}
InvalidateSockets();
-
return true;
}
@@ -464,6 +500,20 @@ input_curl_handle_done(CURL *easy_handle, CURLcode result)
input_curl_request_done(c, result, status);
}
+void
+CurlMulti::SocketAction(curl_socket_t fd, int ev_bitmask)
+{
+ int running_handles;
+ CURLMcode mcode = curl_multi_socket_action(multi, fd, ev_bitmask,
+ &running_handles);
+ if (mcode != CURLM_OK)
+ FormatError(curlm_domain,
+ "curl_multi_socket_action() failed: %s",
+ curl_multi_strerror(mcode));
+
+ ReadInfo();
+}
+
/**
* Check for finished HTTP responses.
*
@@ -484,53 +534,32 @@ CurlMulti::ReadInfo()
}
}
-inline void
-CurlMulti::Perform()
+int
+CurlMulti::TimerFunction(gcc_unused CURLM *_multi, long timeout_ms, void *userp)
{
- assert(io_thread_inside());
-
- CURLMcode mcode;
+ CurlMulti &multi = *(CurlMulti *)userp;
+ assert(_multi == multi.multi);
- do {
- int running_handles;
- mcode = curl_multi_perform(multi, &running_handles);
- } while (mcode == CURLM_CALL_MULTI_PERFORM);
+ if (timeout_ms < 0) {
+ multi.Cancel();
+ return 0;
+ }
- if (mcode != CURLM_OK && mcode != CURLM_CALL_MULTI_PERFORM)
- FormatError(curlm_domain,
- "curl_multi_perform() failed: %s",
- curl_multi_strerror(mcode));
-}
+ if (timeout_ms >= 0 && timeout_ms < 10)
+ /* CURL 7.21.1 likes to report "timeout=0", which
+ means we're running in a busy loop. Quite a bad
+ idea to waste so much CPU. Let's use a lower limit
+ of 10ms. */
+ timeout_ms = 10;
-int
-CurlMulti::PrepareSockets()
-{
- UpdateSockets();
-
- long timeout2;
- CURLMcode mcode = curl_multi_timeout(multi, &timeout2);
- if (mcode == CURLM_OK) {
- if (timeout2 >= 0 && timeout2 < 10)
- /* CURL 7.21.1 likes to report "timeout=0",
- which means we're running in a busy loop.
- Quite a bad idea to waste so much CPU.
- Let's use a lower limit of 10ms. */
- timeout2 = 10;
-
- return timeout2;
- } else {
- FormatWarning(curlm_domain,
- "curl_multi_timeout() failed: %s",
- curl_multi_strerror(mcode));
- return -1;
- }
+ multi.Schedule(timeout_ms);
+ return 0;
}
void
-CurlMulti::DispatchSockets()
+CurlMulti::OnTimeout()
{
- Perform();
- ReadInfo();
+ SocketAction(CURL_SOCKET_TIMEOUT, 0);
}
/*
@@ -572,7 +601,6 @@ input_curl_init(const config_param &param, Error &error)
}
curl_multi = new CurlMulti(io_thread_get(), multi);
-
return true;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-18 00:56:00 +0000