/*
* 判断当前连接是否建立
*/
public bool IsConnected()
{
if (null == socket_)
{
return(false);
}
// 通过尝试获取服务器地址，判断连接是否断开
bool res = true;
try
{
if (_remoteEndPoint == null)
{
res = false;
}
}
catch (SystemException)
{
res = false;
}
// 连接意外断开后，调用用户回调函数
if (!res && connected_before_)
{
SuperDebug.Warning(DebugPrefix.Network, "connect to " + host_ + ":" + port_ + " break down.");
connected_before_ = false;
if (null != disconnect_callback_)
{
disconnect_callback_();
}
}
return(res);
}
public bool SetData <T>(T data, PacketSession session) where T : IMessage
{
try
{
_content = data;
_session = session;
_cmdId = (ushort)session.CmdId;
_bodyMem.Position = 0;
_bodyMem.SetLength(0);
_bodyMem.Write(NetUtils.UshortToBigEndian(_cmdId), 0, NetDefine.CMD_BYTES);
_bodyMem.Seek(NetDefine.BODY_HEAD_LEN, SeekOrigin.Begin);
session.WriteTo(_bodyMem);
long sessionPos = _bodyMem.Position;
data.WriteTo(_bodyMem);
long contentPos = _bodyMem.Position;
_bodyMem.Seek(NetDefine.CMD_BYTES, SeekOrigin.Begin);
_bodyMem.Write(NetUtils.UshortToBigEndian((ushort)(sessionPos - NetDefine.BODY_HEAD_LEN)), 0, NetDefine.SESSION_LEN_BYTES);
_bodyMem.Write(NetUtils.UintToBigEndian((uint)(contentPos - sessionPos)), 0, NetDefine.CONTENT_LEN_BYTES);
//OutputBytes("true data:", body_.GetBuffer(), body_.Length);
}
catch (System.Exception e)
{
SuperDebug.Warning(DebugPrefix.Network, "Serialize " + typeof(T).ToString() + " meet exception " + e);
return(false);
}
return(true);
}
private void Reconnect()
{
_reconnectTimes += 1;
_timer = 0;
_status = Status.WaitingConnect;
SuperDebug.Warning(DebugPrefix.Network, "===========Reconnect");
NetworkManager.Instance.LoginGameServer();
}
void ConsumePacket()
{
NetPacket packet = _client.Recv(0);
if (packet != null)
{
DispatchPacket(packet);
}
else
{
/* 检查网络连接状态 */
if (CheckReachabilityChange())
{
SuperDebug.Warning(DebugPrefix.Network, "=========== internetReachability changed to " + netReach);
if (_client.IsConnected())
{
SuperDebug.Warning(DebugPrefix.Network, "=========== disconnect by MonoClientPacketConsumer");
_client.Disconnect();
}
}
// disconnected check
bool isConnected = _client.IsConnected();
if (!isConnected && _lastIsConnected &&
NetworkManager.Instance.onUnexpectedDisconnect != null)
{
NetworkManager.Instance.onUnexpectedDisconnect();
}
_lastIsConnected = isConnected;
if (!isConnected)
{
if (_status == Status.Normal)
{
_status = Status.WaitingConnect;
Reconnect();
}
else if (_status == Status.WaitingConnect)
{
_timer += Time.deltaTime;
if (_timer > RECONNECT_INTERVAL)
{
ShowLoadingWheel();
Reconnect();
}
}
else if (_status == Status.RepeatLogin)
{
TryShowErrorDialog();
}
}
}
return;
}
public Type GetTypeByCmdID(ushort cmdID)
{
Type resType;
if (!_cmdIDMap.TryGetValue(cmdID, out resType))
{
SuperDebug.Warning(DebugPrefix.Network, "undefined cmdID=" + cmdID);
}
return(resType);
}
public ushort GetCmdIDByType(Type type)
{
ushort resCmdID;
if (!_typeMap.TryGetValue(type, out resCmdID))
{
SuperDebug.Warning(DebugPrefix.Network, "undefined type=" + type);
}
return(resCmdID);
}
/*
* 设置心跳包
*/
public bool SetKeepalive(int time_ms, NetPacket packet)
{
if (time_ms <= 0 || null == packet)
{
SuperDebug.Warning(DebugPrefix.Network, "time_ms<=0 or packet==null");
return(false);
}
keepalive_time_ms_ = time_ms;
keepalive_packet_ = packet;
return(true);
}
/*
* 启动接受数据的线程
*/
private bool StartClientThread()
{
if (IsClientThreadRun())
{
SuperDebug.Warning(DebugPrefix.Network, "recv thread is already running now, can not restart.");
return(false);
}
client_producer_thread_ = new Thread(ClientProducerThreadHandler);
client_producer_thread_.Start();
return(true);
}
/*
* 循环读取数据的线程, 逐个处理包
* 目前读取在主线程中，而不在网络线程中
*/
private void ClientConsumerThreadHandler()
{
SuperDebug.Log(DebugPrefix.Network, "clientConsumer thread start.");
while (IsConnected() || 0 < recv_queue_.Count)
{
// 等待的毫秒数，为 Timeout.Infinite，表示无限期等待。
NetPacket packet = Recv(Timeout.Infinite);
if (packet != null)
{
SuperDebug.Log(DebugPrefix.Network, "clientConsumer recv: CmdId=" + packet.GetCmdId());
doCmd_callback_(packet);
}
else
{
SuperDebug.Warning(DebugPrefix.Network, "packet = null in clientConsumerThreadHandler");
}
}
SuperDebug.Log(DebugPrefix.Network, "clientConsumer thread stop.");
}
/*
* 同步方式发送一个标准消息包到服务器
*/
public bool Send(NetPacket packet)
{
if (!IsConnected())
{
SuperDebug.Warning(DebugPrefix.Network, "client is not connected, can not send now.");
return(false);
}
// 序列化
MemoryStream ms = new MemoryStream();
packet.Serialize(ref ms);
// 发送
/* fix: ObjectDisposedException: The object was used after being disposed. */
// 因为另一个线程会close掉socket，在close的同时send，就会导致上面的报错，加了Try-Catch */
try
{
SocketError error = new SocketError();
int send_len = socket_.Send(ms.GetBuffer(), 0, (int)ms.Length, SocketFlags.None, out error);
if (error != SocketError.Success)
{
SuperDebug.Warning(DebugPrefix.Network, "send failed: " + error);
return(false);
}
if (send_len != ms.Length)
{ //???does this happen?
SuperDebug.Warning(DebugPrefix.Network, "packet_len=" + ms.Length + ", but only send " + send_len);
return(false);
}
}
catch (Exception e)
{
SuperDebug.Warning(DebugPrefix.Network, "exception e=" + e.ToString());
return(false);
}
return(true);
}
/*
* 建立连接
*/
public bool Connect(string host, ushort port, int timeout_ms = 2000) //以毫秒为单位
{
try
{
// 检查是否已经建立连接
if (IsConnected())
{
SuperDebug.Warning(DebugPrefix.Network, "client is already connected to " + host_ + ":" + port_ + ", can not connect to other server now.");
return(false);
}
// 赋值
host_ = host;
port_ = port;
timeout_ms_ = timeout_ms;
// 根据host获取ip列表
IPAddress[] ip_list = Dns.GetHostAddresses(host_);
if (0 == ip_list.Length)
{
SuperDebug.Warning(DebugPrefix.Network, "can not get any ip address from host " + host_);
return(false);
}
// 尝试连接每个ip
socket_ = null;
_remoteEndPoint = null;
for (int idx = 0; idx < ip_list.Length; idx++)
{
IPAddress ip_tmp = GetIPAddress(ip_list[idx]);
SuperDebug.Log(DebugPrefix.Network, "try to connect to " + ip_tmp);
IPEndPoint ipe = new IPEndPoint(ip_tmp, port_);
Socket socket_tmp = new Socket(ipe.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
// 初始化socket属性
socket_tmp.NoDelay = true;
socket_tmp.Blocking = true;
socket_tmp.SendTimeout = timeout_ms_;
socket_tmp.ReceiveTimeout = timeout_ms_;
socket_tmp.ReceiveBufferSize = ClientDefine.g_recv_buf_size * 2;
// 连接
timeout_event_.Reset();
socket_tmp.BeginConnect(ip_tmp, port_, new AsyncCallback(ConnectCallback), socket_tmp);
// 超时等待连接建立
timeout_event_.WaitOne(timeout_ms, false);
// 检验连接是否成功
if (socket_tmp.Connected)
{
socket_ = socket_tmp;
_remoteEndPoint = ipe;
SuperDebug.Log(DebugPrefix.Network, "socket_.ReceiveBufferSize= " + socket_.ReceiveBufferSize);
break;
}
else
{
SuperDebug.Log(DebugPrefix.Network, "connect to " + ip_tmp + " timeout.");
continue;
}
}
// 检查是否成功连接
if (null == socket_)
{
SuperDebug.Warning(DebugPrefix.Network, "connect to " + host_ + ":" + port_ + " failed.");
return(false);
}
else
{
SuperDebug.Log(DebugPrefix.Network, "connect to " + host_ + ":" + port_ + " succ.");
SuperDebug.Log(DebugPrefix.Network, "_remoteEndPoint= " + _remoteEndPoint);
}
// 启动工作线程
StartClientThread();
//
connected_before_ = true;
}
catch (System.Exception e)
{
SuperDebug.Error(DebugPrefix.Network, "connect to " + host + ":" + port + " meet exception " + e.ToString());
return(false);
}
return(true);
}
/*
* 同步方式接受多个消息
* 如果当前有可读消息，则立刻返回，否则超时等待设置的时间
*/
private List <NetPacket> RecvPacketList()
{
// 检查连接状态
if (!IsConnected())
{
SuperDebug.Warning(DebugPrefix.Network, "client is not connected, can not recv now.");
return(null);
}
// 开始接受数据
List <NetPacket> list = new List <NetPacket>();
try
{
// 接受到缓存
byte[] recv_buf = new byte[ClientDefine.g_recv_buf_size - left_buf_len_];
SocketError error = new SocketError();
int recv_len = socket_.Receive(recv_buf, 0, recv_buf.Length, SocketFlags.None, out error);
// 接受超时立刻返回
if (error == SocketError.TimedOut ||
error == SocketError.WouldBlock ||
error == SocketError.IOPending)
{
return(list);
}
// 如果接受数据长度为0，则表示连接出现异常，需要立刻使用回调函数通知使用方
if (error != SocketError.Success || 0 == recv_len)
{
SuperDebug.Warning(DebugPrefix.Network, "recv failed with recv_len=" + recv_len + ", error=" + error);
socket_.Close();
socket_ = null;
return(list);
}
// 合并上次剩余、本次收到的数据
byte[] total_buf = new byte[ClientDefine.g_recv_buf_size];
Array.Copy(left_buf_, 0, total_buf, 0, left_buf_len_);
Array.Copy(recv_buf, 0, total_buf, left_buf_len_, recv_len);
int total_len = recv_len + left_buf_len_;
left_buf_len_ = 0;
// 开始处理
int used = 0;
// 一次可能recv多个packet，循环反序列化每个packet,并加入list
while (used < total_len)
{
//缓存之前的有效数据
if (_tempPacket == null)
{
_tempPacket = new NetPacket();
}
PacketStatus packet_status = _tempPacket.Deserialize(ref total_buf, ref used, total_len);
if (PacketStatus.PACKET_CORRECT != packet_status)
{
// 存储残缺的数据
if (PacketStatus.PACKET_NOT_COMPLETE == packet_status)
{
left_buf_len_ = total_len - used;
Array.Copy(total_buf, used, left_buf_, 0, left_buf_len_);
}
else
{
SuperDebug.Warning(DebugPrefix.Network, "deserialize packet failed. " + packet_status);
}
break;
}
else
{
list.Add(_tempPacket);
_tempPacket = null;
}
}
}
catch (SystemException e)
{
if (IsConnected())
{
SuperDebug.Error(DebugPrefix.Network, "recv failed: " + e);
}
}
return(list);
}