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rhubarb-lip-sync/rhubarb/lib/webrtc-8d2248ff/webrtc/base/win32socketserver.cc

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/*
* 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 "webrtc/base/win32socketserver.h"
#include <algorithm>
#include <ws2tcpip.h> // NOLINT
#include "webrtc/base/byteorder.h"
#include "webrtc/base/common.h"
#include "webrtc/base/logging.h"
#include "webrtc/base/win32window.h"
#include "webrtc/base/winping.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();
virtual bool OnMessage(UINT uMsg, WPARAM wParam, LPARAM lParam,
LRESULT& result);
virtual void OnNcDestroy();
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;
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_(NULL), dns_(NULL) {
}
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, NULL, NULL, 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) {
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 (!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) {
ASSERT(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 NULL;
if (out_addr)
SocketAddressFromSockAddrStorage(saddr, out_addr);
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;
closing_ = false;
close_error_ = 0;
UpdateLastError();
}
if (dns_) {
WSACancelAsyncRequest(dns_->handle);
delete dns_;
dns_ = NULL;
}
if (sink_) {
sink_->Dispose();
sink_ = NULL;
}
addr_.Clear();
state_ = CS_CLOSED;
return err;
}
int Win32Socket::EstimateMTU(uint16_t* mtu) {
SocketAddress addr = GetRemoteAddress();
if (addr.IsAnyIP()) {
error_ = ENOTCONN;
return -1;
}
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_t size = PACKET_MAXIMUMS[level] - IP_HEADER_SIZE - ICMP_HEADER_SIZE;
WinPing::PingResult result = ping.Ping(addr.ipaddr(), size,
ICMP_PING_TIMEOUT_MILLIS, 1, false);
if (result == WinPing::PING_FAIL) {
error_ = EINVAL; // can't think of a better error ID
return -1;
}
if (result != WinPing::PING_TOO_LARGE) {
*mtu = PACKET_MAXIMUMS[level];
return 0;
}
}
ASSERT(false);
return 0;
}
void Win32Socket::CreateSink() {
ASSERT(NULL == sink_);
// Create window
sink_ = new EventSink(this);
sink_->Create(NULL, L"EventSink", 0, 0, 0, 0, 10, 10);
}
bool Win32Socket::SetAsync(int events) {
if (NULL == sink_) {
CreateSink();
ASSERT(NULL != 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:
ASSERT(false);
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_ = NULL;
}
}
///////////////////////////////////////////////////////////////////////////////
// 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(MessageQueue* message_queue)
: message_queue_(message_queue),
wnd_(this),
posted_(false),
hdlg_(NULL) {
if (s_wm_wakeup_id == 0)
s_wm_wakeup_id = RegisterWindowMessage(L"WM_WAKEUP");
if (!wnd_.Create(NULL, kWindowName, 0, 0, 0, 0, 0, 0)) {
LOG_GLE(LS_ERROR) << "Failed to create message window.";
}
}
Win32SocketServer::~Win32SocketServer() {
if (wnd_.handle() != NULL) {
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 NULL;
}
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, NULL);
// 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, NULL, 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.
ASSERT(cms == -1);
MSG msg;
b = GetMessage(&msg, NULL, 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, NULL);
}
}
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;
}
} // namespace rtc
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