最近使用多线程同时调用一个Web Service，总是有很多调用报超时，代码类似于下面的代码（为了简化，我把调用Web Service改为使用HttpWebRequest访问一个网址，效果时一样的）：
using System;using System.Diagnostics;using System.Net;using System.Threading;namespace HttpRequestTest
{
/**//// <summary>
/// Class1 的摘要说明。
/// </summary> class HttpRequestTest { //[STAThread] static void Main(string[] args) { for(int i = 0; i < 100; i++ ) { ThreadPool.QueueUserWorkItem(new WaitCallback(MakeWebRequest),"http://www.163.com"); } Console.ReadLine(); } private static void MakeWebRequest (object obj) { string url = obj as string; HttpWebResponse res = null; try { HttpWebRequest req = (HttpWebRequest)WebRequest.Create (url); req.Timeout = 15000; Console.WriteLine ("\nConnecting to " + url + " "); res = (HttpWebResponse)req.GetResponse (); Console.WriteLine("[" + AppDomain.GetCurrentThreadId() + "] ContentLength:" + res.ContentLength); Console.WriteLine ("Connected.\n"); } catch (Exception e) { Console.WriteLine ("Source : " + e.Source); Console.WriteLine ("Message : " + e.Message); Console.WriteLine(e.ToString()); Debug.WriteLine(e.ToString()); //Console.WriteLine("StackTrace :" + e.StackTrace); } finally { if (res != null) { res.Close (); } } } }
}
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