我正在尝试向 Windows Phone 7 编写远程控制应用程序。
一切正常，但我无法通过网络进行 IP 扫描。
Connected课堂上的参数Socket效果不佳。要使用它，我需要连接到任何 IP，然后发送任何消息 - 没关系。但超时时间太长 - 大约 10 秒（对于关闭的个人电脑）。
我需要扫描大约 256 个 IP，而且 2560 秒 - 太长了。我试图自己写超时。它有效，但一段时间后应用程序停止。
我不明白为什么。没有例外。电话只是停止尝试连接，视觉工作室有时会崩溃。如果有溢出 - 它会在哪里？
这是一些代码：（TryHost循环FOR运行。一次只有一个开始，Searcher.AddHost()运行下一次迭代TryHost）
异步客户端：
public void TryHost(string host)
{
SocketAsyncEventArgs socketEventArg = new SocketAsyncEventArgs();
DnsEndPoint hostEntry = new DnsEndPoint(host, _port);
// Create a socket and connect to the server
Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
socketEventArg.Completed += new EventHandler<SocketAsyncEventArgs>(SocketEventArg_Completed1);
socketEventArg.RemoteEndPoint = hostEntry;
sock.NoDelay = true;
socketEventArg.UserToken = sock;
try
{
sock.ConnectAsync(socketEventArg);
}
catch (SocketException ex)
{}
}
void SocketEventArg_Completed1(object sender, SocketAsyncEventArgs e)
{
switch (e.LastOperation)
{
case SocketAsyncOperation.Connect:
ProcessConnect1(e);
break;
case SocketAsyncOperation.SendTo:
connected = false;
ProcessSend1(e);
break;
case SocketAsyncOperation.Receive:
sended = false;
ProcessReceive1(e);
break;
default:
throw new Exception("Problems");
}
}
private void ProcessReceive1(SocketAsyncEventArgs e)
{
if (e.SocketError == SocketError.Success)
{
// Received data from server
string dataFromServer = Encoding.UTF8.GetString(e.Buffer, 0, e.BytesTransferred);
if (dataFromServer.IndexOf("<EOF>") > -1)
{
Searcher.AddHost(dataFromServer);
}
}
else
{
Searcher.AddHost(null);
}
}
private void ProcessSend1(SocketAsyncEventArgs e)
{
if (e.SocketError == SocketError.Success)
{
Socket sock = e.UserToken as Socket;
sended = true;
sock.ReceiveAsync(e);
Thread.Sleep(500);
if (sended)
{
sock.Dispose();
Searcher.AddHost(null);
}
}
else
{
Searcher.AddHost(null);
}
}
private void ProcessConnect1(SocketAsyncEventArgs e)
{
if (e.SocketError == SocketError.Success)
{
byte[] buffer = Encoding.UTF8.GetBytes("Knock" + "!" + sessionId + "<EOF>");
e.SetBuffer(buffer, 0, buffer.Length);
sock = e.UserToken as Socket;
connected = true;
sock.SendToAsync(e);
e.ConnectSocket.NoDelay = false;
Thread.Sleep(500);
if (connected)
{
sock.Dispose();
}
}
else
{
sock.Dispose();
Searcher.AddHost(null);
}
}
我正在使用static类Searcher。UI 按钮从StartSearch()准备类搜索的方法开始搜索，并在AsyncClient变量中运行方法。当AssyncClient请求超时或被主机应答时，AssyncClient运行AddHost()方法并Searcher准备下一个 IP，然后重新TryHost()开始
静态搜索器：
using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Collections.Generic;
using System.Threading;
namespace PivotApp1 {
class PartedIp
{
public string FirstPart;
public string LastPart;
public PartedIp(string first, string last)
{
FirstPart = first;
LastPart = last;
}
}
public class SearchArgs : EventArgs
{
private List<string> message;
public SearchArgs(List<string> msg)
{
message = msg;
}
public List<string> Message
{
get { return message; }
}
}
public static class Searcher
{
static bool searching = false;
static string phoneIp = "";
static string ipTemplate = "";
static int currentLookingIp;
static int stopIp;
static List<string> answers = new List<string>();
static AsynchronousClient newC;
static int chBound = 255;
static int lwBound = 255;
public static event EventHandler SearchComplete = delegate { };
public static void SayItsOver(List<string> message)
{
SearchComplete(null, new SearchArgs(message));
}
static AsynchronousClient searcher;
static string CheckIp()
{
string phoneIp = null;
try
{
MyIPAddress finder = new MyIPAddress();
finder.Find((address) =>
{
phoneIp = address == null ? "Unknown" : address.ToString();
});
}
catch (Exception e)
{
throw new Exception();
}
if (phoneIp == "Unknown")
{
return null;
}
else
{
return phoneIp;
}
}
static PartedIp PrepareForSearch(string phoneIp)
{
IPAddress ipForTest = new IPAddress(10);
if (IPAddress.TryParse(phoneIp, out ipForTest))
{
string[] splittedIp = phoneIp.Split('.');
PartedIp phonePartedIp = new PartedIp(splittedIp[0] + '.' + splittedIp[1] + '.' + splittedIp[2] + '.', splittedIp[3]);
return phonePartedIp;
}
else return null;
}
public static void StartSearch(AsynchronousClient newC)
{
phoneIp = CheckIp();
if (phoneIp != null)
{
searching = true;
newC = newC1;
PartedIp partedIp = PrepareForSearch(phoneIp);
ipTemplate = partedIp.FirstPart;
stopIp = Int32.Parse(partedIp.LastPart);
currentLookingIp = stopIp - 1;
newC.TryHost(ipTemplate + currentLookingIp);
}
else
Deployment.Current.Dispatcher.BeginInvoke(() => {
MessageBox.Show("Error in Ip detection");
});
}
static void NextHost()
{
if (searching)
{
currentLookingIp--;
if (currentLookingIp == 0)
currentLookingIp = 255;
}
}
static public void AddHost(string answer)
{
if (searching)
{
if (answer != null)
{
answers.Add(answer);
}
NextHost();
if (currentLookingIp == stopIp)
{
SayItsOver(answers);
searching = false;
}
else
{
newC.TryHost(ipTemplate + currentLookingIp);
}
}
}
} }
我调试了很多时间。我的开始ip = 192.168.0.103。My Server Ip = 192.168.0.100. 搜索工作完美，直到192.168.0.19（这里没有 PC）。即使我从192.168.0.20它开始搜索也会崩溃。另一个死区is 192.168.0.1和下一个192.168.0.255。另外 - 手动启动TryHost()工作正常。当我尝试自动搜索时，问题就开始了。怎么了？
我花了几天时间，只是不知道该怎么办。