| /* |
| * Copyright (C) 2008 Apple Inc. All Rights Reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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 APPLE INC. ``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 APPLE INC. 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. |
| */ |
| |
| #include "config.h" |
| #include "NetworkStateNotifier.h" |
| |
| #include <wtf/MainThread.h> |
| #include <wtf/Vector.h> |
| |
| #include <winsock2.h> |
| #include <iphlpapi.h> |
| |
| namespace WebCore { |
| |
| void NetworkStateNotifier::updateStateWithoutNotifying() |
| { |
| DWORD size = 0; |
| if (::GetAdaptersAddresses(AF_UNSPEC, 0, 0, 0, &size) != ERROR_BUFFER_OVERFLOW) |
| return; |
| |
| Vector<char> buffer(size); |
| auto addresses = reinterpret_cast<PIP_ADAPTER_ADDRESSES>(buffer.data()); |
| if (::GetAdaptersAddresses(AF_UNSPEC, 0, 0, addresses, &size) != ERROR_SUCCESS) |
| return; |
| |
| for (; addresses; addresses = addresses->Next) { |
| if (addresses->IfType != MIB_IF_TYPE_LOOPBACK && addresses->OperStatus == IfOperStatusUp) { |
| // We found an interface that was up. |
| m_isOnLine = true; |
| return; |
| } |
| } |
| |
| m_isOnLine = false; |
| } |
| |
| void CALLBACK NetworkStateNotifier::addressChangeCallback(void*, BOOLEAN timedOut) |
| { |
| callOnMainThread([] { |
| // NotifyAddrChange only notifies us of a single address change. Now that we've been notified, |
| // we need to call it again so we'll get notified the *next* time. |
| singleton().registerForAddressChange(); |
| |
| singleton().updateStateSoon(); |
| }); |
| } |
| |
| void NetworkStateNotifier::registerForAddressChange() |
| { |
| HANDLE handle; |
| ::NotifyAddrChange(&handle, &m_overlapped); |
| } |
| |
| void NetworkStateNotifier::startObserving() |
| { |
| memset(&m_overlapped, 0, sizeof(m_overlapped)); |
| m_overlapped.hEvent = ::CreateEvent(0, false, false, 0); |
| ::RegisterWaitForSingleObject(&m_waitHandle, m_overlapped.hEvent, addressChangeCallback, nullptr, INFINITE, 0); |
| registerForAddressChange(); |
| } |
| |
| } // namespace WebCore |