GetRequestStream() 返回 WebException 超时...但仅在某些机器上
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【中文标题】GetRequestStream() 返回 WebException 超时...但仅在某些机器上【英文标题】:GetRequestStream() returning WebException time out ... but only on some machines 【发布时间】:2014-01-08 16:44:18 【问题描述】:在第一次“使用”时抛出异常: using (var os = firstRequest.GetRequestStream())
我现在的猜测是它与服务器发起的 ssl 信任问题有关,但如果这是真的,那么 4 台 windows 7 pro 机器之间有什么不同,其中 2 台工作正常,2 台抛出异常,
异常详情:
System.Net.WebException was unhandled
Message=The operation has timed out
Source=System
StackTrace:
at System.Net.HttpWebRequest.GetRequestStream(TransportContext& context)
at System.Net.HttpWebRequest.GetRequestStream()
at MyCheckAPI.MyCheckLogic2.HttpPost4(String URI, String URI2, String Parameters1, String Parameters2) in C:\Users\Ha-Erez\Desktop\RichTB\RichTB\MyCheckLogic2.cs:line 309
at MyCheckAPI.MyCheckLogic2.MobileGetCode2(String email, String pass) in C:\Users\Ha-Erez\Desktop\RichTB\RichTB\MyCheckLogic2.cs:line 444
at RichTB.Integration.button5_Click(Object sender, EventArgs e) in C:\Users\Ha-Erez\Desktop\RichTB\RichTB\Form1.cs:line 348
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at RichTB.Program.Main() in C:\Users\Ha-Erez\Desktop\RichTB\RichTB\Program.cs:line 18
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:
会是什么?
public static string HttpPost4(string URI, string URI2, string Parameters1, string Parameters2)
string respStr = String.Empty;
CookieContainer cookieJar = new CookieContainer();
HttpWebRequest firstRequest = (HttpWebRequest)WebRequest.Create(URI);
try
firstRequest.CookieContainer = cookieJar;
firstRequest.KeepAlive = true;
firstRequest.ContentType = "application/x-www-form-urlencoded";
firstRequest.Method = "POST";
firstRequest.KeepAlive = false;
firstRequest.Timeout = 5000;
firstRequest.Proxy = null;
firstRequest.ServicePoint.ConnectionLeaseTimeout = 5000;
firstRequest.ServicePoint.MaxIdleTime = 5000;
byte[] bytes = System.Text.Encoding.UTF8.GetBytes(Parameters1);
firstRequest.ContentLength = bytes.Length;
using (var os = firstRequest.GetRequestStream())
os.Write(bytes, 0, bytes.Length);
os.Close();
using (HttpWebResponse firstResponse = (HttpWebResponse)firstRequest.GetResponse())
using (var sr = new StreamReader(firstResponse.GetResponseStream()))
respStr = sr.ReadToEnd().Trim();
Logger(DateTime.Now + " Login Response: " + respStr, 1);
sr.Close();
firstResponse.Close();
// cookieJar.Add(firstResponse.Cookies);
HttpWebRequest secondRequest = (HttpWebRequest)WebRequest.Create(URI2);
secondRequest.Method = "POST";
secondRequest.ContentType = "application/x-www-form-urlencoded";
// secondRequest.KeepAlive = true;
secondRequest.KeepAlive = false;
secondRequest.Timeout = 5000;
secondRequest.ServicePoint.ConnectionLeaseTimeout = 5000;
secondRequest.ServicePoint.MaxIdleTime = 5000;
// secondRequest.Headers["Set-Cookie"] = firstResponse.Headers["Set-Cookie"];
secondRequest.CookieContainer = cookieJar;
byte[] bytes2 = System.Text.Encoding.UTF8.GetBytes(Parameters2);
secondRequest.ContentLength = bytes2.Length;
// httpWebRequest.
using (var os2 = secondRequest.GetRequestStream())
os2.Write(bytes2, 0, bytes2.Length);
os2.Close();
using (WebResponse secondResponse = secondRequest.GetResponse())
using (var sr = new StreamReader(secondResponse.GetResponseStream()))
respStr = sr.ReadToEnd().Trim();
sr.Close();
return respStr;
catch (Exception ee)
Logger(DateTime.Now + " , "+ ee.Message +" , "+ ee.StackTrace, 1);
finally
firstRequest.Abort();
return respStr;
【问题讨论】:
异常详情是什么? iv'e 重新编辑了问题:添加了异常详细信息 【参考方案1】:这是SSL 证书问题,服务器处理不当。 当重定向到不同的服务器时,一切都适用于所有场景。 还通过将 .net 4 升级到 .net 4.5 在客户端解决
【讨论】:
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