| /* |
| * libjingle |
| * Copyright 2004--2005, Google Inc. |
| * |
| * 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. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 "talk/base/byteorder.h" |
| #include "talk/base/common.h" |
| #include "talk/base/logging.h" |
| #include "talk/base/winping.h" |
| #include "talk/base/win32socketserver.h" |
| #include "talk/base/win32window.h" |
| #include <ws2tcpip.h> |
| |
| namespace talk_base { |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // Win32Socket |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static const int kfRead = 0x0001; |
| static const int kfWrite = 0x0002; |
| |
| // Standard MTUs |
| static const uint16 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 uint32 IP_HEADER_SIZE = 20; |
| static const uint32 ICMP_HEADER_SIZE = 8; |
| |
| #ifdef DEBUG |
| 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 sockaddr_in& addr) { |
| talk_base::SocketAddress address; |
| address.FromSockAddr(addr); |
| 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 sockaddr_in& addr) { } |
| #endif |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| // Win32Socket::EventSink |
| ///////////////////////////////////////////////////////////////////////////// |
| |
| #define WM_SOCKETNOTIFY (WM_USER + 50) |
| #define WM_DNSNOTIFY (WM_USER + 51) |
| |
| struct Win32Socket::DnsLookup { |
| HANDLE handle; |
| uint16 port; |
| char buffer[MAXGETHOSTSTRUCT]; |
| }; |
| |
| class Win32Socket::EventSink : public Win32Window { |
| public: |
| EventSink(Win32Socket * parent) : parent_(parent) { } |
| |
| void Dispose(); |
| |
| virtual bool OnMessage(UINT uMsg, WPARAM wParam, LPARAM lParam, |
| LRESULT& result); |
| virtual void OnFinalMessage(HWND hWnd); |
| |
| 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_ = NULL; |
| 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; |
| |
| // Make sure the socket isn't already closed |
| if (!parent_ || (parent_->socket_ == INVALID_SOCKET)) |
| return true; |
| |
| int event = WSAGETSELECTEVENT(lParam); |
| int wsa_error = WSAGETSELECTERROR(lParam); |
| |
| if (uMsg == WM_TIMER) { |
| event = FD_CLOSE; |
| wsa_error = WSAETIMEDOUT; |
| } else if (event == FD_CLOSE) { |
| char ch; |
| if (::recv(parent_->socket_, &ch, 1, MSG_PEEK) > 0) { |
| parent_->signal_close_ = true; |
| return true; |
| } |
| } |
| |
| parent_->OnSocketNotify(event, wsa_error); |
| return true; |
| } |
| |
| bool |
| Win32Socket::EventSink::OnDnsNotify(WPARAM wParam, LPARAM lParam, |
| LRESULT& result) { |
| result = 0; |
| |
| if (!parent_) |
| return true; |
| |
| if (!parent_->dns_ || |
| (parent_->dns_->handle != reinterpret_cast<HANDLE>(wParam))) { |
| ASSERT(false); |
| return true; |
| } |
| |
| uint32 ip = 0; |
| int error = WSAGETASYNCERROR(lParam); |
| |
| if (error == 0) { |
| hostent * pHost = reinterpret_cast<hostent *>(parent_->dns_->buffer); |
| uint32 net_ip = *reinterpret_cast<uint32 *>(pHost->h_addr_list[0]); |
| ip = talk_base::NetworkToHost32(net_ip); |
| } |
| |
| parent_->OnDnsNotify(ip, error); |
| return true; |
| } |
| |
| void |
| Win32Socket::EventSink::OnFinalMessage(HWND hWnd) { |
| delete this; |
| } |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| // Win32Socket |
| ///////////////////////////////////////////////////////////////////////////// |
| |
| Win32Socket::Win32Socket() |
| : socket_(INVALID_SOCKET), error_(0), state_(CS_CLOSED), |
| signal_close_(false), sink_(NULL), dns_(NULL) { |
| // TODO: replace addr_ with SocketAddress |
| memset(&addr_, 0, sizeof(addr_)); |
| } |
| |
| Win32Socket::~Win32Socket() { |
| Close(); |
| } |
| |
| int |
| Win32Socket::Attach(SOCKET s) { |
| ASSERT(socket_ == INVALID_SOCKET); |
| if (socket_ != INVALID_SOCKET) |
| return SOCKET_ERROR; |
| |
| ASSERT(s != INVALID_SOCKET); |
| if (s == INVALID_SOCKET) |
| return SOCKET_ERROR; |
| |
| socket_ = s; |
| state_ = CS_CONNECTED; |
| |
| if (!Create(FD_READ | FD_WRITE | FD_CLOSE)) |
| return SOCKET_ERROR; |
| |
| return 0; |
| } |
| |
| void |
| Win32Socket::SetTimeout(int ms) { |
| if (sink_) |
| ::SetTimer(sink_->handle(), 1, ms, 0); |
| } |
| |
| talk_base::SocketAddress |
| Win32Socket::GetLocalAddress() const { |
| sockaddr_in addr; |
| socklen_t addrlen = sizeof(addr); |
| int result = ::getsockname(socket_, (sockaddr*)&addr, &addrlen); |
| ASSERT(addrlen == sizeof(addr)); |
| talk_base::SocketAddress address; |
| if (result >= 0) { |
| address.FromSockAddr(addr); |
| } else { |
| ASSERT(result >= 0); |
| } |
| return address; |
| } |
| |
| talk_base::SocketAddress |
| Win32Socket::GetRemoteAddress() const { |
| sockaddr_in addr; |
| socklen_t addrlen = sizeof(addr); |
| int result = ::getpeername(socket_, (sockaddr*)&addr, &addrlen); |
| ASSERT(addrlen == sizeof(addr)); |
| talk_base::SocketAddress address; |
| if (result >= 0) { |
| address.FromSockAddr(addr); |
| } else { |
| ASSERT(errno == ENOTCONN); |
| } |
| return address; |
| } |
| |
| int |
| Win32Socket::Bind(const talk_base::SocketAddress& addr) { |
| ASSERT(socket_ == INVALID_SOCKET); |
| if (socket_ != INVALID_SOCKET) |
| return SOCKET_ERROR; |
| |
| if (!Create(FD_ACCEPT | FD_CLOSE)) |
| return SOCKET_ERROR; |
| |
| sockaddr_in saddr; |
| addr.ToSockAddr(&saddr); |
| int err = ::bind(socket_, (sockaddr*)&saddr, sizeof(saddr)); |
| UpdateLastError(); |
| return err; |
| } |
| |
| int |
| Win32Socket::Connect(const talk_base::SocketAddress& addr) { |
| ASSERT(socket_ == INVALID_SOCKET); |
| if (socket_ != INVALID_SOCKET) |
| return SOCKET_ERROR; |
| |
| if (!Create(FD_READ | FD_WRITE | FD_CONNECT | FD_CLOSE)) |
| return SOCKET_ERROR; |
| |
| if (!addr.IsUnresolved()) { |
| sockaddr_in saddr; |
| addr.ToSockAddr(&saddr); |
| |
| // now connect |
| return DoConnect(saddr); |
| } |
| |
| LOG_F(LS_INFO) << "async dns lookup (" << addr.IPAsString() << ")"; |
| DnsLookup * dns = new DnsLookup; |
| dns->handle = WSAAsyncGetHostByName(sink_->handle(), WM_DNSNOTIFY, |
| addr.IPAsString().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 sockaddr_in& addr) { |
| connect_time_ = talk_base::GetMillisecondCount(); |
| int result = connect(socket_, (SOCKADDR*)&addr, sizeof(addr)); |
| if (result == SOCKET_ERROR) { |
| int code = WSAGetLastError(); |
| if (code != WSAEWOULDBLOCK) { |
| ReportWSAError("WSAAsync:connect", code, addr); |
| error_ = code; |
| Close(); |
| return SOCKET_ERROR; |
| } |
| } |
| addr_ = addr; |
| state_ = CS_CONNECTING; |
| return 0; |
| } |
| |
| void |
| Win32Socket::OnSocketNotify(int event, int error) { |
| error_ = error; |
| switch (event) { |
| case FD_CONNECT: |
| if (error != ERROR_SUCCESS) { |
| ReportWSAError("WSAAsync:connect notify", error, addr_); |
| #ifdef DEBUG |
| int32 duration = talk_base::TimeDiff(talk_base::GetMillisecondCount(), |
| connect_time_); |
| LOG(LS_INFO) << "WSAAsync:connect error (" << duration |
| << " ms), faking close"; |
| #endif |
| Close(); |
| // 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 { |
| #ifdef DEBUG |
| int32 duration = talk_base::TimeDiff(talk_base::GetMillisecondCount(), |
| 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_); |
| Close(); |
| } else { |
| SignalReadEvent(this); |
| } |
| break; |
| |
| case FD_WRITE: |
| if (error != ERROR_SUCCESS) { |
| ReportWSAError("WSAAsync:write notify", error, addr_); |
| Close(); |
| } else { |
| SignalWriteEvent(this); |
| } |
| break; |
| |
| case FD_CLOSE: |
| ReportWSAError("WSAAsync:close notify", error, addr_); |
| Close(); |
| SignalCloseEvent(this, error); |
| break; |
| } |
| } |
| |
| void |
| Win32Socket::OnDnsNotify(int ip, int error) { |
| LOG_F(LS_INFO) << "(" << talk_base::SocketAddress::IPToString(ip) |
| << ", " << error << ")"; |
| if (error == 0) { |
| talk_base::SocketAddress address(ip, dns_->port); |
| sockaddr_in addr; |
| address.ToSockAddr(&addr); |
| error = DoConnect(addr); |
| } else { |
| Close(); |
| } |
| |
| if (error) { |
| error_ = error; |
| SignalCloseEvent(this, error_); |
| } else { |
| delete dns_; |
| dns_ = NULL; |
| } |
| } |
| |
| int |
| Win32Socket::GetError() const { |
| return error_; |
| } |
| |
| void |
| Win32Socket::SetError(int error) { |
| error_ = error; |
| } |
| |
| Socket::ConnState |
| Win32Socket::GetState() const { |
| return state_; |
| } |
| |
| int |
| Win32Socket::SetOption(Option opt, int value) { |
| ASSERT(opt == OPT_DONTFRAGMENT); |
| value = (value == 0) ? 0 : 1; |
| return ::setsockopt(socket_, IPPROTO_IP, IP_DONTFRAGMENT, |
| reinterpret_cast<char*>(&value), sizeof(value)); |
| } |
| |
| int |
| Win32Socket::Send(const void *pv, size_t cb) { |
| int sent = ::send(socket_, reinterpret_cast<const char *>(pv), (int)cb, 0); |
| UpdateLastError(); |
| return sent; |
| } |
| |
| int |
| Win32Socket::SendTo(const void *pv, size_t cb, |
| const talk_base::SocketAddress& addr) { |
| sockaddr_in saddr; |
| addr.ToSockAddr(&saddr); |
| int sent = ::sendto(socket_, reinterpret_cast<const char *>(pv), (int)cb, 0, |
| (sockaddr*)&saddr, sizeof(saddr)); |
| UpdateLastError(); |
| return sent; |
| } |
| |
| int |
| Win32Socket::Recv(void *pv, size_t cb) { |
| int received = ::recv(socket_, (char *)pv, (int)cb, 0); |
| UpdateLastError(); |
| if (signal_close_ && (received > 0)) { |
| char ch; |
| if (::recv(socket_, &ch, 1, MSG_PEEK) <= 0) { |
| signal_close_ = false; |
| ::PostMessage(sink_->handle(), WM_SOCKETNOTIFY, |
| WSAMAKESELECTREPLY(FD_CLOSE, 0), 0); |
| } |
| } |
| return received; |
| } |
| |
| int |
| Win32Socket::RecvFrom(void *pv, size_t cb, talk_base::SocketAddress *paddr) { |
| sockaddr_in saddr; |
| socklen_t cbAddr = sizeof(saddr); |
| int received = ::recvfrom(socket_, (char *)pv, (int)cb, 0, (sockaddr*)&saddr, |
| &cbAddr); |
| UpdateLastError(); |
| if (received != SOCKET_ERROR) |
| paddr->FromSockAddr(saddr); |
| if (signal_close_ && (received > 0)) { |
| char ch; |
| if (::recv(socket_, &ch, 1, MSG_PEEK) <= 0) { |
| signal_close_ = false; |
| ::PostMessage(sink_->handle(), WM_SOCKETNOTIFY, |
| WSAMAKESELECTREPLY(FD_CLOSE, 0), 0); |
| } |
| } |
| return received; |
| } |
| |
| int |
| Win32Socket::Listen(int backlog) { |
| int err = ::listen(socket_, backlog); |
| UpdateLastError(); |
| if (err == 0) |
| state_ = CS_CONNECTING; |
| return err; |
| } |
| |
| talk_base::Socket* |
| Win32Socket::Accept(talk_base::SocketAddress *paddr) { |
| sockaddr_in saddr; |
| socklen_t cbAddr = sizeof(saddr); |
| SOCKET s = ::accept(socket_, (sockaddr*)&saddr, &cbAddr); |
| UpdateLastError(); |
| if (s == INVALID_SOCKET) |
| return NULL; |
| if (paddr) |
| paddr->FromSockAddr(saddr); |
| Win32Socket* socket = new Win32Socket; |
| if (0 == socket->Attach(s)) |
| return socket; |
| delete socket; |
| return NULL; |
| } |
| |
| int |
| Win32Socket::Close() { |
| int err = 0; |
| if (socket_ != INVALID_SOCKET) { |
| err = ::closesocket(socket_); |
| socket_ = INVALID_SOCKET; |
| signal_close_ = false; |
| UpdateLastError(); |
| } |
| if (dns_) { |
| WSACancelAsyncRequest(dns_->handle); |
| delete dns_; |
| dns_ = NULL; |
| } |
| if (sink_) { |
| sink_->Dispose(); |
| sink_ = NULL; |
| } |
| memset(&addr_, 0, sizeof(addr_)); // no longer connected, zero ip/port |
| state_ = CS_CLOSED; |
| return err; |
| } |
| |
| int |
| Win32Socket::EstimateMTU(uint16* mtu) { |
| talk_base::SocketAddress addr = GetRemoteAddress(); |
| if (addr.IsAny()) { |
| error_ = ENOTCONN; |
| return -1; |
| } |
| |
| talk_base::WinPing ping; |
| if (!ping.IsValid()) { |
| error_ = EINVAL; // can't think of a better error ID |
| return -1; |
| } |
| |
| for (int level = 0; PACKET_MAXIMUMS[level + 1] > 0; ++level) { |
| int32 size = PACKET_MAXIMUMS[level] - IP_HEADER_SIZE - ICMP_HEADER_SIZE; |
| talk_base::WinPing::PingResult result = |
| ping.Ping(addr.ip(), size, 0, 1, false); |
| if (result == talk_base::WinPing::PING_FAIL) { |
| error_ = EINVAL; // can't think of a better error ID |
| return -1; |
| } |
| if (result != talk_base::WinPing::PING_TOO_LARGE) { |
| *mtu = PACKET_MAXIMUMS[level]; |
| return 0; |
| } |
| } |
| |
| ASSERT(false); |
| return 0; |
| } |
| |
| bool |
| Win32Socket::Create(long events) { |
| ASSERT(NULL == sink_); |
| |
| if (INVALID_SOCKET == socket_) { |
| socket_ = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, NULL, 0); |
| if (socket_ == INVALID_SOCKET) { |
| UpdateLastError(); |
| return false; |
| } |
| } |
| |
| // Create window |
| sink_ = new EventSink(this); |
| sink_->Create(NULL, L"EventSink", 0, 0, 0, 0, 10, 10); |
| |
| // start the async select |
| if (WSAAsyncSelect(socket_, sink_->handle(), WM_SOCKETNOTIFY, events) |
| == SOCKET_ERROR) { |
| UpdateLastError(); |
| Close(); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| void |
| Win32Socket::UpdateLastError() { |
| error_ = WSAGetLastError(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // Win32SocketServer |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static UINT s_wm_wakeup_id; |
| |
| LRESULT CALLBACK DummyWndProc(HWND hwnd, UINT wm, WPARAM wp, LPARAM lp); |
| |
| // A socket server that provides cricket base services on top of a win32 gui thread |
| |
| Win32SocketServer::Win32SocketServer(MessageQueue *message_queue) { |
| if (s_wm_wakeup_id == 0) |
| s_wm_wakeup_id = RegisterWindowMessage(L"WM_WAKEUP"); |
| message_queue_ = message_queue; |
| hwnd_ = NULL; |
| CreateDummyWindow(); |
| } |
| |
| Win32SocketServer::~Win32SocketServer() { |
| if (hwnd_ != NULL) { |
| KillTimer(hwnd_, 1); |
| ::DestroyWindow(hwnd_); |
| } |
| } |
| |
| Socket* Win32SocketServer::CreateSocket(int type) { |
| ASSERT(SOCK_STREAM == type); |
| return new Win32Socket; |
| } |
| |
| AsyncSocket* Win32SocketServer::CreateAsyncSocket(int type) { |
| ASSERT(SOCK_STREAM == type); |
| return new Win32Socket; |
| } |
| |
| bool Win32SocketServer::Wait(int cms, bool process_io) { |
| ASSERT(!process_io || (cms == 0)); // Should only be used for Thread::Send, or in Pump, below |
| if (cms == -1) { |
| MSG msg; |
| GetMessage(&msg, NULL, s_wm_wakeup_id, s_wm_wakeup_id); |
| } else if (cms != 0) { |
| Sleep(cms); |
| } |
| return true; |
| } |
| |
| void Win32SocketServer::WakeUp() { |
| // Always post for every wakeup, so there are no |
| // critical sections |
| if (hwnd_ != NULL) |
| PostMessage(hwnd_, s_wm_wakeup_id, 0, 0); |
| } |
| |
| void Win32SocketServer::Pump() { |
| // Process messages |
| Message msg; |
| while (message_queue_->Get(&msg, 0)) |
| message_queue_->Dispatch(&msg); |
| |
| // Anything remaining? |
| int delay = message_queue_->GetDelay(); |
| if (delay == -1) { |
| KillTimer(hwnd_, 1); |
| } else { |
| SetTimer(hwnd_, 1, delay, NULL); |
| } |
| } |
| |
| void Win32SocketServer::CreateDummyWindow() |
| { |
| static bool s_registered; |
| if (!s_registered) { |
| ::WNDCLASSW wc; |
| memset(&wc, 0, sizeof(wc)); |
| wc.cbWndExtra = sizeof(this); |
| wc.lpszClassName = L"Dummy"; |
| wc.lpfnWndProc = DummyWndProc; |
| ::RegisterClassW(&wc); |
| s_registered = true; |
| } |
| |
| hwnd_ = ::CreateWindowW(L"Dummy", L"", 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL); |
| SetWindowLong(hwnd_, GWL_USERDATA, (LONG)(LONG_PTR)this); |
| } |
| |
| LRESULT CALLBACK DummyWndProc(HWND hwnd, UINT wm, WPARAM wp, LPARAM lp) |
| { |
| if (wm == s_wm_wakeup_id || (wm == WM_TIMER && wp == 1)) { |
| Win32SocketServer *ss = (Win32SocketServer *)(LONG_PTR)GetWindowLong(hwnd, GWL_USERDATA); |
| ss->Pump(); |
| return 0; |
| } |
| return ::DefWindowProc(hwnd, wm, wp, lp); |
| } |
| |
| } // namespace talk_base |