我创建了一个简单的客户端/服务器应用程序,当我在本地或在Lan网络下运行时,它运行良好(1MB / s,这是我为服务器设置的最大速度)。但是当我尝试在我的Dedicate Server / VPS中运行它时,我的下载速度会变慢。 我在服务器上使用CentOS,在运行它时使用Mono,Mono版本是2.10.2,CentOs是64位版本。使用框架4创建。
速度测试:
本地:1MB
Lan:1MB
在CentOS上运行服务器:0~10~20 KB
我的连接速度是2Mb或~250KB。它会让我全速前进。但非常罕见,我不知道为什么它有时给我全速,有时甚至没有速度或为什么有时只有10KB,其他时间只有20KB。另外,我在Win7桌面上运行客户端部分。这是服务器和客户端部分的代码:
服务器:
class Program
{
private static BackgroundWorker _ListeningWorker;
private static BackgroundWorker _QWorker;
private static System.Net.Sockets.Socket _Server;
private static List<System.Net.Sockets.Socket> ConnectedClients = new List<System.Net.Sockets.Socket>();
static void Main(string[] args)
{
Program._ListeningWorker = new BackgroundWorker();
Program._ListeningWorker.WorkerSupportsCancellation = true;
Program._ListeningWorker.DoWork += _ListeningWorker_DoWork;
Program._QWorker = new BackgroundWorker();
Program._QWorker.WorkerSupportsCancellation = true;
Program._QWorker.DoWork += _QWorker_DoWork;
Program.Start();
while (true)
{
Console.Clear();
Console.WriteLine("1.0.0.1");
Console.WriteLine(Program.ConnectedClients.Count.ToString());
System.Threading.Thread.Sleep(1000);
}
}
public static bool Start()
{
if (!Program._ListeningWorker.IsBusy)
{
Program._Server = new System.Net.Sockets.Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ipLocal = new IPEndPoint(IPAddress.Any, 8081);
Program._Server.Bind(ipLocal);
Program._Server.Listen(10);
Program._ListeningWorker.RunWorkerAsync();
Program._QWorker.RunWorkerAsync();
}
return true;
}
private static void _ListeningWorker_DoWork(object sender, DoWorkEventArgs e)
{
while (!Program._ListeningWorker.CancellationPending)
{
if (Program._Server.Poll(10, SelectMode.SelectRead))
{
lock (ConnectedClients)
{
Program.ConnectedClients.Add(Program._Server.Accept());
}
}
System.Threading.Thread.Sleep(1);
}
Program._Server.Close();
}
private static void _QWorker_DoWork(object sender, DoWorkEventArgs e)
{
byte[] array = new byte[1024];
Random random = new Random();
while (!Program._QWorker.CancellationPending)
{
if (ConnectedClients.Count > 0)
{
System.Net.Sockets.Socket[] st;
lock (ConnectedClients)
{
st = new System.Net.Sockets.Socket[Program.ConnectedClients.Count];
ConnectedClients.CopyTo(st);
}
foreach (System.Net.Sockets.Socket ser in st)
{
random.NextBytes(array);
try
{
ser.BeginSend(array, 0, array.Length, SocketFlags.None, (AsyncCallback)delegate(IAsyncResult ar)
{
try
{
ser.EndSend(ar);
}
catch (Exception)
{
iDissconnected(ser);
}
}, null);
}
catch (Exception)
{
iDissconnected(ser);
}
}
}
System.Threading.Thread.Sleep(1);
}
Program._Server.Close();
}
internal static void iDissconnected(System.Net.Sockets.Socket client)
{
lock (ConnectedClients)
for (int i = 0; i < ConnectedClients.Count; i++)
if (ConnectedClients[i].Equals(client))
{
ConnectedClients.RemoveAt(i);
i--;
}
}
}
客户端:
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Enter IP Address: ");
string Address = Console.ReadLine();
Console.WriteLine();
ushort Port = 8081;
System.Net.Sockets.Socket Client;
Client = new System.Net.Sockets.Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
Client.Connect(Address, (int)Port);
Console.WriteLine("Connected");
int p = 0;
int t = Environment.TickCount;
while (true)
{
if (Client.Available > 0)
{
byte[] z = new byte[1024];
int r = Client.Receive(z); ;
p += r;
}
else
{
System.Threading.Thread.Sleep(10);
}
if (Environment.TickCount - t >= 1000)
{
t = Environment.TickCount;
Console.WriteLine(Program.FormatFileSizeAsString(p) + " Readed,");
p = 0;
}
}
}
public static string FormatFileSizeAsString(int len)
{
if (len < 750 && len > 0)
return "0.0 B ~";
string[] Suffix = { "B", "KB", "MB", "GB", "TB" };
int i;
double dblSByte = len;
for (i = 0; (int)(len / 1024) > 0; i++, len /= 1024)
dblSByte = len / 1024.0;
return String.Format("{0:0.0} {1}", dblSByte, Suffix[i]);
}
}
谢谢大家,请告诉我您对可能出现的问题的看法。
答案 0 :(得分:0)
每个连接都有ISP的某种限制。 解决很有趣。我曾经在我的请求之前发送HTTP标头,因此ISP增加了我的速度。