| /* |
| * Copyright 2004 The WebRTC Project Authors. All rights reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include "rtc_base/win32socketserver.h" |
| |
| #include <algorithm> |
| #include <ws2tcpip.h> // NOLINT |
| |
| #include "rtc_base/byteorder.h" |
| #include "rtc_base/checks.h" |
| #include "rtc_base/logging.h" |
| #include "rtc_base/win32window.h" |
| |
| namespace rtc { |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // Win32Socket |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| // TODO: Move this to a common place where PhysicalSocketServer can |
| // share it. |
| // Standard MTUs |
| static const uint16_t PACKET_MAXIMUMS[] = { |
| 65535, // Theoretical maximum, Hyperchannel |
| 32000, // Nothing |
| 17914, // 16Mb IBM Token Ring |
| 8166, // IEEE 802.4 |
| // 4464 // IEEE 802.5 (4Mb max) |
| 4352, // FDDI |
| // 2048, // Wideband Network |
| 2002, // IEEE 802.5 (4Mb recommended) |
| // 1536, // Expermental Ethernet Networks |
| // 1500, // Ethernet, Point-to-Point (default) |
| 1492, // IEEE 802.3 |
| 1006, // SLIP, ARPANET |
| // 576, // X.25 Networks |
| // 544, // DEC IP Portal |
| // 512, // NETBIOS |
| 508, // IEEE 802/Source-Rt Bridge, ARCNET |
| 296, // Point-to-Point (low delay) |
| 68, // Official minimum |
| 0, // End of list marker |
| }; |
| |
| static const int IP_HEADER_SIZE = 20u; |
| static const int ICMP_HEADER_SIZE = 8u; |
| static const int ICMP_PING_TIMEOUT_MILLIS = 10000u; |
| |
| // TODO: Enable for production builds also? Use FormatMessage? |
| #if !defined(NDEBUG) |
| LPCSTR WSAErrorToString(int error, LPCSTR *description_result) { |
| LPCSTR string = "Unspecified"; |
| LPCSTR description = "Unspecified description"; |
| switch (error) { |
| case ERROR_SUCCESS: |
| string = "SUCCESS"; |
| description = "Operation succeeded"; |
| break; |
| case WSAEWOULDBLOCK: |
| string = "WSAEWOULDBLOCK"; |
| description = "Using a non-blocking socket, will notify later"; |
| break; |
| case WSAEACCES: |
| string = "WSAEACCES"; |
| description = "Access denied, or sharing violation"; |
| break; |
| case WSAEADDRNOTAVAIL: |
| string = "WSAEADDRNOTAVAIL"; |
| description = "Address is not valid in this context"; |
| break; |
| case WSAENETDOWN: |
| string = "WSAENETDOWN"; |
| description = "Network is down"; |
| break; |
| case WSAENETUNREACH: |
| string = "WSAENETUNREACH"; |
| description = "Network is up, but unreachable"; |
| break; |
| case WSAENETRESET: |
| string = "WSANETRESET"; |
| description = "Connection has been reset due to keep-alive activity"; |
| break; |
| case WSAECONNABORTED: |
| string = "WSAECONNABORTED"; |
| description = "Aborted by host"; |
| break; |
| case WSAECONNRESET: |
| string = "WSAECONNRESET"; |
| description = "Connection reset by host"; |
| break; |
| case WSAETIMEDOUT: |
| string = "WSAETIMEDOUT"; |
| description = "Timed out, host failed to respond"; |
| break; |
| case WSAECONNREFUSED: |
| string = "WSAECONNREFUSED"; |
| description = "Host actively refused connection"; |
| break; |
| case WSAEHOSTDOWN: |
| string = "WSAEHOSTDOWN"; |
| description = "Host is down"; |
| break; |
| case WSAEHOSTUNREACH: |
| string = "WSAEHOSTUNREACH"; |
| description = "Host is unreachable"; |
| break; |
| case WSAHOST_NOT_FOUND: |
| string = "WSAHOST_NOT_FOUND"; |
| description = "No such host is known"; |
| break; |
| } |
| if (description_result) { |
| *description_result = description; |
| } |
| return string; |
| } |
| |
| void ReportWSAError(LPCSTR context, int error, const SocketAddress& address) { |
| LPCSTR description_string; |
| LPCSTR error_string = WSAErrorToString(error, &description_string); |
| LOG(LS_INFO) << context << " = " << error |
| << " (" << error_string << ":" << description_string << ") [" |
| << address.ToString() << "]"; |
| } |
| #else |
| void ReportWSAError(LPCSTR context, int error, const SocketAddress& address) {} |
| #endif |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| // Win32Socket::EventSink |
| ///////////////////////////////////////////////////////////////////////////// |
| |
| #define WM_SOCKETNOTIFY (WM_USER + 50) |
| #define WM_DNSNOTIFY (WM_USER + 51) |
| |
| struct Win32Socket::DnsLookup { |
| HANDLE handle; |
| uint16_t port; |
| char buffer[MAXGETHOSTSTRUCT]; |
| }; |
| |
| class Win32Socket::EventSink : public Win32Window { |
| public: |
| explicit EventSink(Win32Socket * parent) : parent_(parent) { } |
| |
| void Dispose(); |
| |
| bool OnMessage(UINT uMsg, |
| WPARAM wParam, |
| LPARAM lParam, |
| LRESULT& result) override; |
| void OnNcDestroy() override; |
| |
| private: |
| bool OnSocketNotify(UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT& result); |
| bool OnDnsNotify(WPARAM wParam, LPARAM lParam, LRESULT& result); |
| |
| Win32Socket * parent_; |
| }; |
| |
| void Win32Socket::EventSink::Dispose() { |
| parent_ = nullptr; |
| if (::IsWindow(handle())) { |
| ::DestroyWindow(handle()); |
| } else { |
| delete this; |
| } |
| } |
| |
| bool Win32Socket::EventSink::OnMessage(UINT uMsg, WPARAM wParam, |
| LPARAM lParam, LRESULT& result) { |
| switch (uMsg) { |
| case WM_SOCKETNOTIFY: |
| case WM_TIMER: |
| return OnSocketNotify(uMsg, wParam, lParam, result); |
| case WM_DNSNOTIFY: |
| return OnDnsNotify(wParam, lParam, result); |
| } |
| return false; |
| } |
| |
| bool Win32Socket::EventSink::OnSocketNotify(UINT uMsg, WPARAM wParam, |
| LPARAM lParam, LRESULT& result) { |
| result = 0; |
| |
| int wsa_event = WSAGETSELECTEVENT(lParam); |
| int wsa_error = WSAGETSELECTERROR(lParam); |
| |
| // Treat connect timeouts as close notifications |
| if (uMsg == WM_TIMER) { |
| wsa_event = FD_CLOSE; |
| wsa_error = WSAETIMEDOUT; |
| } |
| |
| if (parent_) |
| parent_->OnSocketNotify(static_cast<SOCKET>(wParam), wsa_event, wsa_error); |
| return true; |
| } |
| |
| bool Win32Socket::EventSink::OnDnsNotify(WPARAM wParam, LPARAM lParam, |
| LRESULT& result) { |
| result = 0; |
| |
| int error = WSAGETASYNCERROR(lParam); |
| if (parent_) |
| parent_->OnDnsNotify(reinterpret_cast<HANDLE>(wParam), error); |
| return true; |
| } |
| |
| void Win32Socket::EventSink::OnNcDestroy() { |
| if (parent_) { |
| LOG(LS_ERROR) << "EventSink hwnd is being destroyed, but the event sink" |
| " hasn't yet been disposed."; |
| } else { |
| delete this; |
| } |
| } |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| // Win32Socket |
| ///////////////////////////////////////////////////////////////////////////// |
| |
| Win32Socket::Win32Socket() |
| : socket_(INVALID_SOCKET), |
| error_(0), |
| state_(CS_CLOSED), |
| connect_time_(0), |
| closing_(false), |
| close_error_(0), |
| sink_(nullptr), |
| dns_(nullptr) {} |
| |
| Win32Socket::~Win32Socket() { |
| Close(); |
| } |
| |
| bool Win32Socket::CreateT(int family, int type) { |
| Close(); |
| int proto = (SOCK_DGRAM == type) ? IPPROTO_UDP : IPPROTO_TCP; |
| socket_ = ::WSASocket(family, type, proto, nullptr, 0, 0); |
| if (socket_ == INVALID_SOCKET) { |
| UpdateLastError(); |
| return false; |
| } |
| if ((SOCK_DGRAM == type) && !SetAsync(FD_READ | FD_WRITE)) { |
| return false; |
| } |
| return true; |
| } |
| |
| int Win32Socket::Attach(SOCKET s) { |
| RTC_DCHECK(socket_ == INVALID_SOCKET); |
| if (socket_ != INVALID_SOCKET) |
| return SOCKET_ERROR; |
| |
| RTC_DCHECK(s != INVALID_SOCKET); |
| if (s == INVALID_SOCKET) |
| return SOCKET_ERROR; |
| |
| socket_ = s; |
| state_ = CS_CONNECTED; |
| |
| if (!SetAsync(FD_READ | FD_WRITE | FD_CLOSE)) |
| return SOCKET_ERROR; |
| |
| return 0; |
| } |
| |
| void Win32Socket::SetTimeout(int ms) { |
| if (sink_) |
| ::SetTimer(sink_->handle(), 1, ms, 0); |
| } |
| |
| SocketAddress Win32Socket::GetLocalAddress() const { |
| sockaddr_storage addr = {0}; |
| socklen_t addrlen = sizeof(addr); |
| int result = ::getsockname(socket_, reinterpret_cast<sockaddr*>(&addr), |
| &addrlen); |
| SocketAddress address; |
| if (result >= 0) { |
| SocketAddressFromSockAddrStorage(addr, &address); |
| } else { |
| LOG(LS_WARNING) << "GetLocalAddress: unable to get local addr, socket=" |
| << socket_; |
| } |
| return address; |
| } |
| |
| SocketAddress Win32Socket::GetRemoteAddress() const { |
| sockaddr_storage addr = {0}; |
| socklen_t addrlen = sizeof(addr); |
| int result = ::getpeername(socket_, reinterpret_cast<sockaddr*>(&addr), |
| &addrlen); |
| SocketAddress address; |
| if (result >= 0) { |
| SocketAddressFromSockAddrStorage(addr, &address); |
| } else { |
| LOG(LS_WARNING) << "GetRemoteAddress: unable to get remote addr, socket=" |
| << socket_; |
| } |
| return address; |
| } |
| |
| int Win32Socket::Bind(const SocketAddress& addr) { |
| RTC_DCHECK(socket_ != INVALID_SOCKET); |
| if (socket_ == INVALID_SOCKET) |
| return SOCKET_ERROR; |
| |
| sockaddr_storage saddr; |
| size_t len = addr.ToSockAddrStorage(&saddr); |
| int err = ::bind(socket_, |
| reinterpret_cast<sockaddr*>(&saddr), |
| static_cast<int>(len)); |
| UpdateLastError(); |
| return err; |
| } |
| |
| int Win32Socket::Connect(const SocketAddress& addr) { |
| if (state_ != CS_CLOSED) { |
| SetError(EALREADY); |
| return SOCKET_ERROR; |
| } |
| |
| if (!addr.IsUnresolvedIP()) { |
| return DoConnect(addr); |
| } |
| |
| LOG_F(LS_INFO) << "async dns lookup (" << addr.hostname() << ")"; |
| DnsLookup * dns = new DnsLookup; |
| if (!sink_) { |
| // Explicitly create the sink ourselves here; we can't rely on SetAsync |
| // because we don't have a socket_ yet. |
| CreateSink(); |
| } |
| // TODO: Replace with IPv6 compatible lookup. |
| dns->handle = WSAAsyncGetHostByName(sink_->handle(), WM_DNSNOTIFY, |
| addr.hostname().c_str(), dns->buffer, |
| sizeof(dns->buffer)); |
| |
| if (!dns->handle) { |
| LOG_F(LS_ERROR) << "WSAAsyncGetHostByName error: " << WSAGetLastError(); |
| delete dns; |
| UpdateLastError(); |
| Close(); |
| return SOCKET_ERROR; |
| } |
| |
| dns->port = addr.port(); |
| dns_ = dns; |
| state_ = CS_CONNECTING; |
| return 0; |
| } |
| |
| int Win32Socket::DoConnect(const SocketAddress& addr) { |
| if ((socket_ == INVALID_SOCKET) && !CreateT(addr.family(), SOCK_STREAM)) { |
| return SOCKET_ERROR; |
| } |
| if (!SetAsync(FD_READ | FD_WRITE | FD_CONNECT | FD_CLOSE)) { |
| return SOCKET_ERROR; |
| } |
| |
| sockaddr_storage saddr = {0}; |
| size_t len = addr.ToSockAddrStorage(&saddr); |
| connect_time_ = Time(); |
| int result = connect(socket_, |
| reinterpret_cast<SOCKADDR*>(&saddr), |
| static_cast<int>(len)); |
| if (result != SOCKET_ERROR) { |
| state_ = CS_CONNECTED; |
| } else { |
| int code = WSAGetLastError(); |
| if (code == WSAEWOULDBLOCK) { |
| state_ = CS_CONNECTING; |
| } else { |
| ReportWSAError("WSAAsync:connect", code, addr); |
| error_ = code; |
| Close(); |
| return SOCKET_ERROR; |
| } |
| } |
| addr_ = addr; |
| |
| return 0; |
| } |
| |
| int Win32Socket::GetError() const { |
| return error_; |
| } |
| |
| void Win32Socket::SetError(int error) { |
| error_ = error; |
| } |
| |
| Socket::ConnState Win32Socket::GetState() const { |
| return state_; |
| } |
| |
| int Win32Socket::GetOption(Option opt, int* value) { |
| int slevel; |
| int sopt; |
| if (TranslateOption(opt, &slevel, &sopt) == -1) |
| return -1; |
| |
| char* p = reinterpret_cast<char*>(value); |
| int optlen = sizeof(value); |
| return ::getsockopt(socket_, slevel, sopt, p, &optlen); |
| } |
| |
| int Win32Socket::SetOption(Option opt, int value) { |
| int slevel; |
| int sopt; |
| if (TranslateOption(opt, &slevel, &sopt) == -1) |
| return -1; |
| |
| const char* p = reinterpret_cast<const char*>(&value); |
| return ::setsockopt(socket_, slevel, sopt, p, sizeof(value)); |
| } |
| |
| int Win32Socket::Send(const void* buffer, size_t length) { |
| int sent = ::send(socket_, |
| reinterpret_cast<const char*>(buffer), |
| static_cast<int>(length), |
| 0); |
| UpdateLastError(); |
| return sent; |
| } |
| |
| int Win32Socket::SendTo(const void* buffer, size_t length, |
| const SocketAddress& addr) { |
| sockaddr_storage saddr; |
| size_t addr_len = addr.ToSockAddrStorage(&saddr); |
| int sent = ::sendto(socket_, reinterpret_cast<const char*>(buffer), |
| static_cast<int>(length), 0, |
| reinterpret_cast<sockaddr*>(&saddr), |
| static_cast<int>(addr_len)); |
| UpdateLastError(); |
| return sent; |
| } |
| |
| int Win32Socket::Recv(void* buffer, size_t length, int64_t* timestamp) { |
| if (timestamp) { |
| *timestamp = -1; |
| } |
| int received = ::recv(socket_, static_cast<char*>(buffer), |
| static_cast<int>(length), 0); |
| UpdateLastError(); |
| if (closing_ && received <= static_cast<int>(length)) |
| PostClosed(); |
| return received; |
| } |
| |
| int Win32Socket::RecvFrom(void* buffer, |
| size_t length, |
| SocketAddress* out_addr, |
| int64_t* timestamp) { |
| if (timestamp) { |
| *timestamp = -1; |
| } |
| sockaddr_storage saddr; |
| socklen_t addr_len = sizeof(saddr); |
| int received = ::recvfrom(socket_, static_cast<char*>(buffer), |
| static_cast<int>(length), 0, |
| reinterpret_cast<sockaddr*>(&saddr), &addr_len); |
| UpdateLastError(); |
| if (received != SOCKET_ERROR) |
| SocketAddressFromSockAddrStorage(saddr, out_addr); |
| if (closing_ && received <= static_cast<int>(length)) |
| PostClosed(); |
| return received; |
| } |
| |
| int Win32Socket::Listen(int backlog) { |
| int err = ::listen(socket_, backlog); |
| if (!SetAsync(FD_ACCEPT)) |
| return SOCKET_ERROR; |
| |
| UpdateLastError(); |
| if (err == 0) |
| state_ = CS_CONNECTING; |
| return err; |
| } |
| |
| Win32Socket* Win32Socket::Accept(SocketAddress* out_addr) { |
| sockaddr_storage saddr; |
| socklen_t addr_len = sizeof(saddr); |
| SOCKET s = ::accept(socket_, reinterpret_cast<sockaddr*>(&saddr), &addr_len); |
| UpdateLastError(); |
| if (s == INVALID_SOCKET) |
| return nullptr; |
| if (out_addr) |
| SocketAddressFromSockAddrStorage(saddr, out_addr); |
| Win32Socket* socket = new Win32Socket; |
| if (0 == socket->Attach(s)) |
| return socket; |
| delete socket; |
| return nullptr; |
| } |
| |
| int Win32Socket::Close() { |
| int err = 0; |
| if (socket_ != INVALID_SOCKET) { |
| err = ::closesocket(socket_); |
| socket_ = INVALID_SOCKET; |
| closing_ = false; |
| close_error_ = 0; |
| UpdateLastError(); |
| } |
| if (dns_) { |
| WSACancelAsyncRequest(dns_->handle); |
| delete dns_; |
| dns_ = nullptr; |
| } |
| if (sink_) { |
| sink_->Dispose(); |
| sink_ = nullptr; |
| } |
| addr_.Clear(); |
| state_ = CS_CLOSED; |
| return err; |
| } |
| |
| void Win32Socket::CreateSink() { |
| RTC_DCHECK(nullptr == sink_); |
| |
| // Create window |
| sink_ = new EventSink(this); |
| sink_->Create(nullptr, L"EventSink", 0, 0, 0, 0, 10, 10); |
| } |
| |
| bool Win32Socket::SetAsync(int events) { |
| if (nullptr == sink_) { |
| CreateSink(); |
| RTC_DCHECK(nullptr != sink_); |
| } |
| |
| // start the async select |
| if (WSAAsyncSelect(socket_, sink_->handle(), WM_SOCKETNOTIFY, events) |
| == SOCKET_ERROR) { |
| UpdateLastError(); |
| Close(); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool Win32Socket::HandleClosed(int close_error) { |
| // WM_CLOSE will be received before all data has been read, so we need to |
| // hold on to it until the read buffer has been drained. |
| char ch; |
| closing_ = true; |
| close_error_ = close_error; |
| return (::recv(socket_, &ch, 1, MSG_PEEK) <= 0); |
| } |
| |
| void Win32Socket::PostClosed() { |
| // If we see that the buffer is indeed drained, then send the close. |
| closing_ = false; |
| ::PostMessage(sink_->handle(), WM_SOCKETNOTIFY, |
| socket_, WSAMAKESELECTREPLY(FD_CLOSE, close_error_)); |
| } |
| |
| void Win32Socket::UpdateLastError() { |
| error_ = WSAGetLastError(); |
| } |
| |
| int Win32Socket::TranslateOption(Option opt, int* slevel, int* sopt) { |
| switch (opt) { |
| case OPT_DONTFRAGMENT: |
| *slevel = IPPROTO_IP; |
| *sopt = IP_DONTFRAGMENT; |
| break; |
| case OPT_RCVBUF: |
| *slevel = SOL_SOCKET; |
| *sopt = SO_RCVBUF; |
| break; |
| case OPT_SNDBUF: |
| *slevel = SOL_SOCKET; |
| *sopt = SO_SNDBUF; |
| break; |
| case OPT_NODELAY: |
| *slevel = IPPROTO_TCP; |
| *sopt = TCP_NODELAY; |
| break; |
| case OPT_DSCP: |
| LOG(LS_WARNING) << "Socket::OPT_DSCP not supported."; |
| return -1; |
| default: |
| RTC_NOTREACHED(); |
| return -1; |
| } |
| return 0; |
| } |
| |
| void Win32Socket::OnSocketNotify(SOCKET socket, int event, int error) { |
| // Ignore events if we're already closed. |
| if (socket != socket_) |
| return; |
| |
| error_ = error; |
| switch (event) { |
| case FD_CONNECT: |
| if (error != ERROR_SUCCESS) { |
| ReportWSAError("WSAAsync:connect notify", error, addr_); |
| #if !defined(NDEBUG) |
| int64_t duration = TimeSince(connect_time_); |
| LOG(LS_INFO) << "WSAAsync:connect error (" << duration |
| << " ms), faking close"; |
| #endif |
| state_ = CS_CLOSED; |
| // If you get an error connecting, close doesn't really do anything |
| // and it certainly doesn't send back any close notification, but |
| // we really only maintain a few states, so it is easiest to get |
| // back into a known state by pretending that a close happened, even |
| // though the connect event never did occur. |
| SignalCloseEvent(this, error); |
| } else { |
| #if !defined(NDEBUG) |
| int64_t duration = TimeSince(connect_time_); |
| LOG(LS_INFO) << "WSAAsync:connect (" << duration << " ms)"; |
| #endif |
| state_ = CS_CONNECTED; |
| SignalConnectEvent(this); |
| } |
| break; |
| |
| case FD_ACCEPT: |
| case FD_READ: |
| if (error != ERROR_SUCCESS) { |
| ReportWSAError("WSAAsync:read notify", error, addr_); |
| } else { |
| SignalReadEvent(this); |
| } |
| break; |
| |
| case FD_WRITE: |
| if (error != ERROR_SUCCESS) { |
| ReportWSAError("WSAAsync:write notify", error, addr_); |
| } else { |
| SignalWriteEvent(this); |
| } |
| break; |
| |
| case FD_CLOSE: |
| if (HandleClosed(error)) { |
| ReportWSAError("WSAAsync:close notify", error, addr_); |
| state_ = CS_CLOSED; |
| SignalCloseEvent(this, error); |
| } |
| break; |
| } |
| } |
| |
| void Win32Socket::OnDnsNotify(HANDLE task, int error) { |
| if (!dns_ || dns_->handle != task) |
| return; |
| |
| uint32_t ip = 0; |
| if (error == 0) { |
| hostent* pHost = reinterpret_cast<hostent*>(dns_->buffer); |
| uint32_t net_ip = *reinterpret_cast<uint32_t*>(pHost->h_addr_list[0]); |
| ip = NetworkToHost32(net_ip); |
| } |
| |
| LOG_F(LS_INFO) << "(" << IPAddress(ip).ToSensitiveString() |
| << ", " << error << ")"; |
| |
| if (error == 0) { |
| SocketAddress address(ip, dns_->port); |
| error = DoConnect(address); |
| } else { |
| Close(); |
| } |
| |
| if (error) { |
| error_ = error; |
| SignalCloseEvent(this, error_); |
| } else { |
| delete dns_; |
| dns_ = nullptr; |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // Win32SocketServer |
| // Provides cricket base services on top of a win32 gui thread |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static UINT s_wm_wakeup_id = 0; |
| const TCHAR Win32SocketServer::kWindowName[] = L"libjingle Message Window"; |
| |
| Win32SocketServer::Win32SocketServer() |
| : wnd_(this), |
| posted_(false), |
| hdlg_(nullptr) { |
| if (s_wm_wakeup_id == 0) |
| s_wm_wakeup_id = RegisterWindowMessage(L"WM_WAKEUP"); |
| if (!wnd_.Create(nullptr, kWindowName, 0, 0, 0, 0, 0, 0)) { |
| LOG_GLE(LS_ERROR) << "Failed to create message window."; |
| } |
| } |
| |
| Win32SocketServer::~Win32SocketServer() { |
| if (wnd_.handle() != nullptr) { |
| KillTimer(wnd_.handle(), 1); |
| wnd_.Destroy(); |
| } |
| } |
| |
| Socket* Win32SocketServer::CreateSocket(int type) { |
| return CreateSocket(AF_INET, type); |
| } |
| |
| Socket* Win32SocketServer::CreateSocket(int family, int type) { |
| return CreateAsyncSocket(family, type); |
| } |
| |
| AsyncSocket* Win32SocketServer::CreateAsyncSocket(int type) { |
| return CreateAsyncSocket(AF_INET, type); |
| } |
| |
| AsyncSocket* Win32SocketServer::CreateAsyncSocket(int family, int type) { |
| Win32Socket* socket = new Win32Socket; |
| if (socket->CreateT(family, type)) { |
| return socket; |
| } |
| delete socket; |
| return nullptr; |
| } |
| |
| void Win32SocketServer::SetMessageQueue(MessageQueue* queue) { |
| message_queue_ = queue; |
| } |
| |
| bool Win32SocketServer::Wait(int cms, bool process_io) { |
| BOOL b; |
| if (process_io) { |
| // Spin the Win32 message pump at least once, and as long as requested. |
| // This is the Thread::ProcessMessages case. |
| uint32_t start = Time(); |
| do { |
| MSG msg; |
| SetTimer(wnd_.handle(), 0, cms, nullptr); |
| // Get the next available message. If we have a modeless dialog, give |
| // give the message to IsDialogMessage, which will return true if it |
| // was a message for the dialog that it handled internally. |
| // Otherwise, dispatch as usual via Translate/DispatchMessage. |
| b = GetMessage(&msg, nullptr, 0, 0); |
| if (b == -1) { |
| LOG_GLE(LS_ERROR) << "GetMessage failed."; |
| return false; |
| } else if(b) { |
| if (!hdlg_ || !IsDialogMessage(hdlg_, &msg)) { |
| TranslateMessage(&msg); |
| DispatchMessage(&msg); |
| } |
| } |
| KillTimer(wnd_.handle(), 0); |
| } while (b && TimeSince(start) < cms); |
| } else if (cms != 0) { |
| // Sit and wait forever for a WakeUp. This is the Thread::Send case. |
| RTC_DCHECK(cms == -1); |
| MSG msg; |
| b = GetMessage(&msg, nullptr, s_wm_wakeup_id, s_wm_wakeup_id); |
| { |
| CritScope scope(&cs_); |
| posted_ = false; |
| } |
| } else { |
| // No-op (cms == 0 && !process_io). This is the Pump case. |
| b = TRUE; |
| } |
| return (b != FALSE); |
| } |
| |
| void Win32SocketServer::WakeUp() { |
| if (wnd_.handle()) { |
| // Set the "message pending" flag, if not already set. |
| { |
| CritScope scope(&cs_); |
| if (posted_) |
| return; |
| posted_ = true; |
| } |
| |
| PostMessage(wnd_.handle(), s_wm_wakeup_id, 0, 0); |
| } |
| } |
| |
| void Win32SocketServer::Pump() { |
| // Clear the "message pending" flag. |
| { |
| CritScope scope(&cs_); |
| posted_ = false; |
| } |
| |
| // Dispatch all the messages that are currently in our queue. If new messages |
| // are posted during the dispatch, they will be handled in the next Pump. |
| // We use max(1, ...) to make sure we try to dispatch at least once, since |
| // this allow us to process "sent" messages, not included in the size() count. |
| Message msg; |
| for (size_t max_messages_to_process = |
| std::max<size_t>(1, message_queue_->size()); |
| max_messages_to_process > 0 && message_queue_->Get(&msg, 0, false); |
| --max_messages_to_process) { |
| message_queue_->Dispatch(&msg); |
| } |
| |
| // Anything remaining? |
| int delay = message_queue_->GetDelay(); |
| if (delay == -1) { |
| KillTimer(wnd_.handle(), 1); |
| } else { |
| SetTimer(wnd_.handle(), 1, delay, nullptr); |
| } |
| } |
| |
| bool Win32SocketServer::MessageWindow::OnMessage(UINT wm, WPARAM wp, |
| LPARAM lp, LRESULT& lr) { |
| bool handled = false; |
| if (wm == s_wm_wakeup_id || (wm == WM_TIMER && wp == 1)) { |
| ss_->Pump(); |
| lr = 0; |
| handled = true; |
| } |
| return handled; |
| } |
| |
| Win32Thread::Win32Thread(SocketServer* ss) : Thread(ss), id_(0) {} |
| |
| Win32Thread::~Win32Thread() { |
| Stop(); |
| } |
| |
| void Win32Thread::Run() { |
| id_ = GetCurrentThreadId(); |
| Thread::Run(); |
| id_ = 0; |
| } |
| |
| void Win32Thread::Quit() { |
| PostThreadMessage(id_, WM_QUIT, 0, 0); |
| } |
| |
| } // namespace rtc |