Adding upstream version 1.52.0.upstream/1.52.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 111 insertions, 0 deletions

diff --git a/src/shrpx_accept_handler.cc b/src/shrpx_accept_handler.cc
new file mode 100644
index 0000000..01b6415
--- /dev/null
+++ b/src/shrpx_accept_handler.cc
@@ -0,0 +1,111 @@
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2014 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "shrpx_accept_handler.h"
+
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>
+#endif // HAVE_UNISTD_H
+
+#include <cerrno>
+
+#include "shrpx_connection_handler.h"
+#include "shrpx_config.h"
+#include "shrpx_log.h"
+#include "util.h"
+
+using namespace nghttp2;
+
+namespace shrpx {
+
+namespace {
+void acceptcb(struct ev_loop *loop, ev_io *w, int revent) {
+  auto h = static_cast<AcceptHandler *>(w->data);
+  h->accept_connection();
+}
+} // namespace
+
+AcceptHandler::AcceptHandler(const UpstreamAddr *faddr, ConnectionHandler *h)
+    : conn_hnr_(h), faddr_(faddr) {
+  ev_io_init(&wev_, acceptcb, faddr_->fd, EV_READ);
+  wev_.data = this;
+  ev_io_start(conn_hnr_->get_loop(), &wev_);
+}
+
+AcceptHandler::~AcceptHandler() {
+  ev_io_stop(conn_hnr_->get_loop(), &wev_);
+  close(faddr_->fd);
+}
+
+void AcceptHandler::accept_connection() {
+  sockaddr_union sockaddr;
+  socklen_t addrlen = sizeof(sockaddr);
+
+#ifdef HAVE_ACCEPT4
+  auto cfd =
+      accept4(faddr_->fd, &sockaddr.sa, &addrlen, SOCK_NONBLOCK | SOCK_CLOEXEC);
+#else  // !HAVE_ACCEPT4
+  auto cfd = accept(faddr_->fd, &sockaddr.sa, &addrlen);
+#endif // !HAVE_ACCEPT4
+
+  if (cfd == -1) {
+    switch (errno) {
+    case EINTR:
+    case ENETDOWN:
+    case EPROTO:
+    case ENOPROTOOPT:
+    case EHOSTDOWN:
+#ifdef ENONET
+    case ENONET:
+#endif // ENONET
+    case EHOSTUNREACH:
+    case EOPNOTSUPP:
+    case ENETUNREACH:
+      return;
+    case EMFILE:
+    case ENFILE:
+      LOG(WARN) << "acceptor: running out file descriptor; disable acceptor "
+                   "temporarily";
+      conn_hnr_->sleep_acceptor(get_config()->conn.listener.timeout.sleep);
+      return;
+    default:
+      return;
+    }
+  }
+
+#ifndef HAVE_ACCEPT4
+  util::make_socket_nonblocking(cfd);
+  util::make_socket_closeonexec(cfd);
+#endif // !HAVE_ACCEPT4
+
+  conn_hnr_->handle_connection(cfd, &sockaddr.sa, addrlen, faddr_);
+}
+
+void AcceptHandler::enable() { ev_io_start(conn_hnr_->get_loop(), &wev_); }
+
+void AcceptHandler::disable() { ev_io_stop(conn_hnr_->get_loop(), &wev_); }
+
+int AcceptHandler::get_fd() const { return faddr_->fd; }
+
+} // namespace shrpx