如何测试网络连接,高分求助

ywcyj 2004-06-10 02:42:17

问一下,网络连接测试代码如何写?
哪位高手帮帮我
string url="http://www.csdn.net/";

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ywcyj 2004-06-15

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唉,搞不定

ywcyj 2004-06-14

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楼上的兄弟
我现在还没法用这个函数呢
没找到必须的命名空间

Ginger547 2004-06-14

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我个人的想法用代码 connect一下如果可以的话应该有返回如果没有返回那就表示连不上当然要用TCP 如果用UDP的是话是不判断连上与否的

ywcyj 2004-06-14

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没人知道吗?

ywcyj 2004-06-10

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在论坛出错以前,有位兄弟给我贴了下面的函数.在编译的时候没法识别cookieHeader,HttpUtility等.我添加了System.Net;System.Net.Sockets;System.Web;等命名控件.但还是没解决问题
可以论坛出错后,我以前发的帖子也找不到了.我也不清楚这函数是哪位兄弟给的了.呵呵

public static string getPage(String url, String paramList)
{
HttpWebResponse res = null;
string strResult = "";

try
{
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "POST";
req.KeepAlive = true;
req.ContentType = "application/x-www-form-urlencoded";
CookieContainer cookieCon = new CookieContainer();
req.CookieContainer = cookieCon;
req.CookieContainer.SetCookies(new Uri(url),cookieHeader);
StringBuilder UrlEncoded = new StringBuilder();
Char[] reserved = {'?', '=', '&'};
byte[] SomeBytes = null;

if (paramList != null)
{
int i=0, j;
while(i<paramList.Length)
{
j=paramList.IndexOfAny(reserved, i);
if (j==-1)
{
UrlEncoded.Append(HttpUtility.UrlEncode(paramList.Substring(i, paramList.Length-i)));
break;
}
UrlEncoded.Append(HttpUtility.UrlEncode(paramList.Substring(i, j-i)));
UrlEncoded.Append(paramList.Substring(j,1));
i = j+1;
}
SomeBytes = Encoding.UTF8.GetBytes(UrlEncoded.ToString());
req.ContentLength = SomeBytes.Length;
Stream newStream = req.GetRequestStream();
newStream.Write(SomeBytes, 0, SomeBytes.Length);
newStream.Close();
}
else
{
req.ContentLength = 0;
}

res = (HttpWebResponse)req.GetResponse();
Stream ReceiveStream = res.GetResponseStream();
Encoding encode = System.Text.Encoding.GetEncoding("utf-8");
StreamReader sr = new StreamReader( ReceiveStream, encode );
Char[] read = new Char[256];
int count = sr.Read( read, 0, 256 );
while (count > 0)
{
String str = new String(read, 0, count);
strResult += str;
count = sr.Read(read, 0, 256);
}
}
catch(Exception e)
{
strResult = e.ToString();
}
finally
{
if ( res != null )
{
res.Close();
}
}

return strResult;
}