我試圖設置一個命名管道服務器和客戶端在兩個程序之間發送數據。 我的問題是,當我的數據被收回,例如。 BeginRead命令om服務器觸發器在我從客戶端序列化了一個對象後,它爲同樣的消息觸發了20次回調。目標是客戶端程序將向服務器程序發送命令。當服務器處理任務時,當有一個連接時,它會將狀態更新發送回客戶端。命名管道異步
這是我目前的測試程序。
class Program
{
static void Main(string[] args)
{
var server = new PipeServer();
server.Init();
var client = new PipeClient();
if (client.Connect())
{
Console.WriteLine("Connected to server.");
}
else
{
Console.WriteLine("Connection failed.");
return;
}
while (true)
{
Console.Write(" \\> ");
string input = Console.ReadLine();
if (string.IsNullOrEmpty(input)) break;
var arr = input.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
int value = 0;
if (arr.Length != 2) break;
if (!int.TryParse(arr[1], out value)) break;
var obj = new PipeObject { Name = arr[0], Value = value };
client.Send(obj);
//string result = f.Deserialize(client) as string;
//Console.WriteLine(result);
}
}
}
internal class PipeServer
{
IFormatter Formatter = new BinaryFormatter();
public NamedPipeServerStream Instance { get; internal set; }
public bool IsConnected { get; internal set; }
byte[] buffer = new byte[65535];
public object Message { get; set; }
StreamReader sr;
StreamWriter sw;
internal PipeServer()
{
IsConnected = false;
}
public void Init()
{
var ps = new PipeSecurity();
ps.AddAccessRule(new PipeAccessRule(WindowsIdentity.GetCurrent().User, PipeAccessRights.FullControl, AccessControlType.Allow));
ps.AddAccessRule(new PipeAccessRule(new SecurityIdentifier(WellKnownSidType.AuthenticatedUserSid, null), PipeAccessRights.ReadWrite, AccessControlType.Allow));
Instance = new NamedPipeServerStream("Levscan4Pipe", PipeDirection.InOut, 1, PipeTransmissionMode.Message, PipeOptions.Asynchronous | PipeOptions.WriteThrough, 65535, 65535, ps);
sr = new StreamReader(Instance);
sw = new StreamWriter(Instance);
Instance.BeginWaitForConnection(OnClientConnected, Instance);
Thread t = new Thread(Run);
t.Start();
}
void Run()
{
int index = 0;
if (IsConnected)
{
try
{
Instance.BeginRead(buffer, 0, buffer.Length, OnRead_Completed, Instance);
//index += Instance.Read(buffer, 0, buffer.Length);
//try
//{
// using (var ms = new MemoryStream(buffer))
// {
// Message = Formatter.Deserialize(ms);
// index = 0;
// }
//}
//catch (Exception e)
//{
// Debug.WriteLine(e.Message);
// Debug.WriteLine(e.StackTrace);
//}
}
catch (IOException)
{
IsConnected = false;
Instance.Disconnect();
}
}
Thread.Sleep(Timeout.Infinite);
//Instance.WaitForConnection();
//Thread t = new Thread(Run);
//t.Start();
}
void OnClientConnected(IAsyncResult ar)
{
Instance.EndWaitForConnection(ar);
IsConnected = true;
}
void OnRead_Completed(IAsyncResult ar)
{
var bytes = Instance.EndRead(ar);
Debug.WriteLine("{1} > Read completed - bytes read: {0}".FormatWith(bytes, DateTime.Now.ToString()));
//try
//{
// using (var ms = new MemoryStream(buffer))
// {
// Message = Formatter.Deserialize(ms);
// }
//}
//catch (Exception e)
//{
// Debug.WriteLine(e.Message);
// Debug.WriteLine(e.StackTrace);
//}
}
}
internal class PipeClient
{
IFormatter f = new BinaryFormatter();
public NamedPipeClientStream Instance { get; internal set; }
StreamWriter sw;
StreamReader sr;
public PipeClient()
{
Instance = new NamedPipeClientStream(".", "Levscan4Pipe", PipeDirection.InOut, PipeOptions.Asynchronous | PipeOptions.WriteThrough);
sr = new StreamReader(Instance);
sw = new StreamWriter(Instance);
}
public bool Connect()
{
try
{
Instance.Connect(5000);
Instance.ReadMode = PipeTransmissionMode.Message;
Instance.WaitForPipeDrain();
return true;
}
catch
{
return false;
}
}
public void Send(object obj)
{
f.Serialize(Instance, obj);
Instance.Flush();
Instance.WaitForPipeDrain();
}
}
編輯
改變了while循環到如果開始的BeginRead。這解決了多個回調,但我仍然沒有得到一個完整的消息。
我建議你閱讀文檔。例如,在流上調用'Read'將返回讀取的字節數。它看起來像你假設你會在一次閱讀中閱讀你的整個信息,這不一定是這樣。 –
我得到在我的回調中讀取的字節數,但我不能得到消息的字節總數。我的NamedPipeServerStream對象不支持長度和位置。 也想通了,我不能使用一段時間(IsConnected),每次調用BeginRead函數,導致我的回調同時運行多次。 – Azazel
如果我序列化我的對象到一個內存流,然後從中獲取字節並將它們全部發送到pipestreams中寫入方法我在回調中直接獲取消息並且它可以工作。爲什麼不用我的pipestream直接序列化得到相同的結果? – Azazel