public List <P2PMessage> GetReply(int maxReplyMessage)
{
ReadToBuffer(maxReplyMessage);
return(P2PMessage.GenFromMS(ms));
}
void handleLoop(TcpClient client)
{
System.Timers.Timer t = new System.Timers.Timer(200);
var s = client.GetStream();
bool ifClose = false;
Stopwatch stopwatch = new Stopwatch();
var continueTime = 0L;
bool ifAlive = true;
while (!ifClose && client.Connected)
{
if (continueTime > 500)
{
if (ifAlive)
{
continueTime = 0;
ifAlive = false;
}
else
{
ifClose = true;
break;
}
}
stopwatch.Start();
try
{
_logger.Info("enter loop");
var waitConstant = 1;
var count = 0;
var ms = new MemoryStream();
var length4Read = -1;
while (count < waitConstant)
{
client.ReceiveTimeout = 100;
// 如果想要调节缓冲区大小，修改此变量
var buffer_size = 5000;
var buffer = new byte[buffer_size];
var size = 0;
do
{
if (length4Read == 0)
{
count++;
break;
}
else if (length4Read == -1)
{
size = s.Read(buffer, 0, 8);
length4Read = P2PMessage.TryParseHeader(buffer);
if (BitConverter.ToInt32(buffer) == (int)P2PMessageType.GET_OK)
{
waitConstant = 2;
}
else
{
waitConstant = 1;
}
}
else
{
var read_size = (length4Read > buffer_size) ? buffer_size : length4Read;
size = s.Read(buffer, 0, read_size);
length4Read = length4Read - size;
}
ms.Write(buffer, 0, size);
_logger.Info($"now recv buffer is {BitConverter.ToString(ms.ToArray())}, length for read is {length4Read}, count is {count}");
} while (s.DataAvailable);
}
var what = P2PMessage.GenFromMS(ms);
foreach (var i in what)
{
ifAlive = true;
_logger.Info($"recive message : {i.type}");
if (i.type == P2PMessageType.GET_FILE_INFO)
{
var hash = ((GetFileInfoMessage)i).hash;
// 在这里，我使用绑定到TCP四元组的本机地址作为传回的本机地址。
var localAddress = ((IPEndPoint)client.Client.RemoteEndPoint).Address;
SendFileInfoMessage(fmanager.ProvideLocateInfo(hash, localAddress), hash, client);
}
else if (i.type == P2PMessageType.GET_DATA)
{
var message = (GetDataMessage)i;
var hash = message.hash;
var indexs = message.what;
byte[] send_buffer;
try
{
foreach (var index in indexs)
{
send_buffer = fmanager.ProvideFileData(hash, index);
send(new DataMessage(send_buffer, hash, index), client);
}
}
catch (BlockNotPresentException)
{
send(new ErrorMessage(hash, indexs[0]), client);
}
}
else if (i.type == P2PMessageType.GET_OK)
{
var message = (OKMessage)i;
var remote_ip = ((IPEndPoint)client.Client.RemoteEndPoint).Address;
fmanager.SetRemoteBlockPresentStat(
message.block.hashOfFile,
remote_ip,
message.block.index,
true);
}
else if (i.type == P2PMessageType.CLOSE)
{
ifClose = true;
}
}
}
catch (IOException)
{
_logger.Debug($"timeout for receive : {client.Client.RemoteEndPoint}");
break;
}
stopwatch.Stop();
continueTime += stopwatch.ElapsedMilliseconds;
}
}
