I unfortunately had Fiddler running for the whole time I was developing this feature in the plugin and since deploying to clients I found that it will not work for anyone - unless they run fiddler as well! It also does not work on my development machine if I stop running Fiddler.
The main error is Error while copying content to a stream.. So I investigated the possibility of the data I'm POSTing being released by the GC before it finished hitting the server (That, to me, explained why running Fiddler solved it - as I believe the request gets sent to Fiddler first, and then Fiddler sends it to the server). However I couldn't find anything to support that this might be the problem. I have tried making sure it holds onto the data but I don't feel like I'm going down the right route.
The code is roughly like this:
HttpClientHandler httpHandler = new HttpClientHandler { UseDefaultCredentials = true };
var client = new HttpClient(httpHandler, false);
client.BaseAddress = new Uri(BaseUrl + "api/job/PostTest");
var content = new MultipartFormDataContent("Upload----" + DateTime.Now.ToString(System.Globalization.CultureInfo.InvariantCulture));
content.Add(new StringContent(mailItem.HTMLBody, Encoding.UTF8), "BodyHtml");
// content.Add()'s... Omitted for brevity
var response = client.PostAsync(BaseUrl + "api/job/PostTest", content);
response.ContinueWith(prevTask => {
if (prevTask.Result.IsSuccessStatusCode)
{
System.Diagnostics.Debug.WriteLine("Was success");
}
else
{
System.Diagnostics.Debug.WriteLine("Was Error");
}
}, System.Threading.Tasks.TaskContinuationOptions.OnlyOnRanToCompletion);
response.ContinueWith(prevTask =>{
MessageBox.Show(prevTask.Exception.ToString());
}, System.Threading.Tasks.TaskContinuationOptions.OnlyOnFaulted);
The full exception details are:
System.AggregateException: One or more errors occurred. ---> System.Net.Http.HttpRequestException: Error while copying content to a stream. ---> System.IO.IOException: The read operation failed, see inner exception. ---> System.Net.WebException: The request was aborted: The request was canceled.
at System.Net.ConnectStream.BeginRead(Byte[] buffer, Int32 offset, Int32 size, AsyncCallback callback, Object state)
at System.Net.Http.HttpClientHandler.WebExceptionWrapperStream.BeginRead(Byte[] buffer, Int32 offset, Int32 count, AsyncCallback callback, Object state)
--- End of inner exception stack trace ---
at System.Net.Http.HttpClientHandler.WebExceptionWrapperStream.BeginRead(Byte[] buffer, Int32 offset, Int32 count, AsyncCallback callback, Object state)
at System.Net.Http.StreamToStreamCopy.StartRead()
--- End of inner exception stack trace ---
--- End of inner exception stack trace ---
---> (Inner Exception #0) System.Net.Http.HttpRequestException: Error while copying content to a stream. ---> System.IO.IOException: The read operation failed, see inner exception. ---> System.Net.WebException: The request was aborted: The request was canceled.
at System.Net.ConnectStream.BeginRead(Byte[] buffer, Int32 offset, Int32 size, AsyncCallback callback, Object state)
at System.Net.Http.HttpClientHandler.WebExceptionWrapperStream.BeginRead(Byte[] buffer, Int32 offset, Int32 count, AsyncCallback callback, Object state)
--- End of inner exception stack trace ---
at System.Net.Http.HttpClientHandler.WebExceptionWrapperStream.BeginRead(Byte[] buffer, Int32 offset, Int32 count, AsyncCallback callback, Object state)
at System.Net.Http.StreamToStreamCopy.StartRead()
--- End of inner exception stack trace ---<---
If anyone could point me to some resources that help me or point out where I'm going wrong that would help a lot!
When developing our IronBox Outlook plugin we ran into this issue. What we found was that within the VSTO context, the ServicePointManager supported security protocols was only Tls and Ssl3 (which was not going to work with our API which supported only TLS 1.2 or better).
You can check this easily from within your VSTO code like this (here's an example from when we hooked into Application.ItemSend event):
private void ThisAddIn_Startup(object sender, System.EventArgs e)
{
// Handle event when item is sent
this.Application.ItemSend += Application_ItemSend;
}
private void Application_ItemSend(object Item, ref bool Cancel)
{
foreach (var c in (SecurityProtocolType[])Enum.GetValues(typeof(SecurityProtocolType)))
{
if (ServicePointManager.SecurityProtocol.HasFlag(c))
{
Debug.WriteLine(c.ToString());
}
}
Cancel = false;
}
We solved it by setting the ServicePointManager.SecurityProtocol property to support Tls12 like this:
ServicePointManager.SecurityProtocol |= SecurityProtocolType.Tls12;
Hope this helps someone someday,
Kevin
After much searching and much messing about I've not been able to solve this problem using HttpClient so instead what I've done is using WebClient. In case someone else has this problem in the future I'm posting what I ended up using:
System.Net.WebClient wc = new System.Net.WebClient();
wc.Headers.Add("Content-Type", String.Format("multipart/form-data; boundary=\"{0}\"", multipartFormBoundary));
wc.UseDefaultCredentials = true;
try
{
var wcResponse = wc.UploadData(BaseUrl + "api/job/PostJobEmailNote", byteArray);
}
catch(Exception e)
{
// response status code was not in 200's
}
I think problem may be with using anonymous function that returns void. They're a little bit problematic. Changing my lambda to one that returns bools fixed the issue for me.
Related
Im writing a TFTP server application by using WPF of C#. I create a toggle button to start and stop a server. I use Backgroundworker class to send cancel sign immediately in order to prevent the UI hangs while transferring file. The problem is when I click Button to start server and then click again to stop it. The code breaks and give me an exception:
System.Net.Sockets.SocketException
HResult=0x80004005
Message=A blocking operation was interrupted by a call to WSACancelBlockingCall
Source=System
StackTrace:
at System.Net.Sockets.Socket.ReceiveFrom(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags, EndPoint& remoteEP)
at System.Net.Sockets.UdpClient.Receive(IPEndPoint& remoteEP)
at TftpServerApp.Code.TftpServer.StartTftpServices(Object sender, DoWorkEventArgs e) in D:\DA Mang\Do an TFTP\TftpServerApp\TftpServerApp\Code\TftpServer.cs:line 52
at System.ComponentModel.BackgroundWorker.OnDoWork(DoWorkEventArgs e)
at System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument)
This exception was originally thrown at this call stack:
System.Net.Sockets.Socket.ReceiveFrom(byte[], int, int, System.Net.Sockets.SocketFlags, ref System.Net.EndPoint)
System.Net.Sockets.UdpClient.Receive(ref System.Net.IPEndPoint)
TftpServerApp.Code.TftpServer.StartTftpServices(object, System.ComponentModel.DoWorkEventArgs) in TftpServer.cs
System.ComponentModel.BackgroundWorker.OnDoWork(System.ComponentModel.DoWorkEventArgs)
System.ComponentModel.BackgroundWorker.WorkerThreadStart(object)
...and the code that throws exception:
while (true)
{
if (worker1.CancellationPending)
{
tftpServer.Close();
break;
}
int packetNr = 0;
recBuffer = tftpServer.Receive(ref iep);/**Exception thrown here**/
if (((Opcode)recBuffer[1]) == Opcode.READ_REQUEST)
{.....
How can I handle in this situation?
I'm using HttpClient to interact with a webservice (written by my Company) with a lot of apis.
All the apis work great except when one of that (the bigger and slower) take more than 100 seconds to give an answer, passed that time i receive the following error(N.B: If the api take less than 100s all works well):
System.Net.Http.HttpRequestException: An error occurred while sending the request ---> System.Net.WebException: The operation has timed out.
at System.Net.HttpWebRequest+<RunWithTimeoutWorker>d__241`1[T].MoveNext () [0x000c5] in <3e9b3e26c4694baab3f689687ad40612>:0
--- End of stack trace from previous location where exception was thrown ---
at System.Net.HttpWebRequest.EndGetResponse (System.IAsyncResult asyncResult) [0x00020] in <3e9b3e26c4694baab3f689687ad40612>:0
at System.Threading.Tasks.TaskFactory`1[TResult].FromAsyncCoreLogic (System.IAsyncResult iar, System.Func`2[T,TResult] endFunction, System.Action`1[T] endAction, System.Threading.Tasks.Task`1[TResult] promise, System.Boolean requiresSynchronization) [0x0000f] in <d4a23bbd2f544c30a48c44dd622ce09f>:0
--- End of stack trace from previous location where exception was thrown ---
at System.Net.Http.HttpClientHandler+<SendAsync>d__64.MoveNext () [0x0041d] in <25ebe1083eaf4329b5adfdd5bbb7aa57>:0
--- End of inner exception stack trace ---
at System.Net.Http.HttpClientHandler+<SendAsync>d__64.MoveNext () [0x00478] in <25ebe1083eaf4329b5adfdd5bbb7aa57>:0
--- End of stack trace from previous location where exception was thrown ---
at System.Net.Http.HttpClient+<SendAsyncWorker>d__49.MoveNext () [0x000ca] in <25ebe1083eaf4329b5adfdd5bbb7aa57>:0
All the IIS and webservice Timeouts are setted to 5 minutes, so i think i can exclude that is a Webservice Timeout Problem and on the app i set the HttpClient timeout to 10 minutes (but it doesn't work even if i set it at 5 mins), like you can see in my code below. What i'm doing wrong?
CODE:
var handler = new HttpClientHandler() { CookieContainer = cookie,
MaxRequestContentBufferSize = 256000000,
UseCookies = true,
};
HttpClient newclient = new HttpClient(handler);
newclient.Timeout = new TimeSpan(0, 10, 0); //That DIDN'T WORK :(
// ALL THE CODE I NEED TO BUILD MY JSON INSIDE jSoNToPost
//....
//....
//convert it to JSON acceptible content
HttpContent formContent = new StringContent(jSoNToPost, Encoding.UTF8, "application/json");
var uri = new Uri(Path.Combine(BaseUrl, "BIG_API_NAME"));
var response1 = await newclient.PostAsync(uri, formContent); // <-- THE EXCEPTION IS THROWN HERE!!!!!
if (response1.IsSuccessStatusCode)
{
//Other Stuff
//....
//....
}
else
{
//Other Stuff
//....
//....
}
ENVIRONMENT:
Window 10, Visual Studio 2017, Xamarin IOS and Android.
EDIT 2019-01-23 14:21:
The 100s timeout is the default HttpClient timeout, so the
newclient.Timeout = new TimeSpan(0, 10, 0);
not overwrite the default value.
I undestand what is InfiniteTimeSpan and i try to follow both the answers in that post. No success :( it Still show the timeout error after 100s.
If you are using load balancers in your environment, make sure to check if there are time limits set at that level. Some cut off sessions after a certain point as a security measure. No code solution to that :(
I followed the GitHub documentation to implement the http requests with the CURL extension, work in SQL Server 2008 R2, Visual Studio 2010 and .NET 3.5.
I managed to compile and sign correctly the .dll in visual studio, to then create the schemas and functions in SQL Server, since everything works correctly, I can perform GET and POST from SQL Server, however, when wanting to perform a GET or a POST at SABA API, it generates a series of errors.
A .NET Framework error occurred during execution of user-defined
routine or aggregate "XGET": System.Net.WebException: The underlying
connection was closed: An unexpected error occurred on a send. --->
System.IO.IOException: Received an unexpected EOF or 0 bytes from the
transport stream. System.IO.IOException: at
System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset,
Int32 count) at System.Net.Security.SslState.StartReadFrame(Byte[]
buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest) at
System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer,
AsyncProtocolRequest asyncRequest) at
System.Net.Security.SslState.CheckCompletionBeforatextReceive(ProtocolTokat
message, AsyncProtocolRequest asyncRequest) at
System.Net.Security.SslState.StartSatdBlob(Byte[] incoming, Int32
count, AsyncProtocolRequest asyncRequest) at
System.Net.Security.SslState.ForceAuthattication(Boolean receiveFirst,
Byte[] buffer, AsyncProtocolRequest asyncRequest) at
System.Net.Security.SslState.ProcessAuthattication(LazyAsyncResult
lazyResult) at
System.Net.TlsStream.CallProcessAuthattication(Object state) at
System.Threading.ExecutionContext.runTryCode(Object userData) at
System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode
code, CleanupCode backoutCode, Object userData) at
System.Threading.ExecutionContext.RunInternal(ExecutionContext
executionContext, ContextCallback callback, Object state) at
System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state) at
System.Net.TlsStream.ProcessAuthattication(LazyAsyncResult result)
at System.Net.TlsStream.Write(Byte[] buffer, Int32 offset, Int32 size)
at System.Net.PooledStream.Write(Byte[] buffer, Int32 offset, Int32
size) at System.Net.ConnectStream.WriteHeaders(Boo ...
System.Net.WebException: at
System.Net.WebCliatt.DownloadDataInternal(Uri address, WebRequest&
request) at System.Net.WebCliatt.DownloadString(Uri address) ...
This is the code of the Assembly
using Microsoft.SqlServer.Server;
using System;
using System.Data.SqlTypes;
using System.Net;
using System.Threading;
public static class Curl
{
[SqlFunction]
[return: SqlFacet(MaxSize = -1)]
public static SqlChars Get(SqlChars H, SqlChars url)
{
ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls;
var client = new WebClient();
AddHeader(H, client);
return new SqlChars(
client.DownloadString(
Uri.EscapeUriString(url.ToSqlString().Value)
).ToCharArray());
}
[SqlProcedure]
public static void Post(SqlChars H, SqlChars d, SqlChars url)
{
var client = new WebClient();
AddHeader(H, client);
if (d.IsNull)
throw new ArgumentException("You must specify data that will be sent to the endpoint", "#d");
var response =
client.UploadString(
Uri.EscapeUriString(url.ToSqlString().Value),
d.ToSqlString().Value
);
SqlContext.Pipe.Send("Request is executed. " + response);
}
[SqlProcedure]
public static void PostWithRetry(SqlChars H, SqlChars d, SqlChars url)
{
var client = new WebClient();
AddHeader(H, client);
if (d.IsNull)
throw new ArgumentException("You must specify data that will be sent to the endpoint", "#d");
int i = RETRY_COUNT;
string response = "";
do try
{
response =
client.UploadString(
Uri.EscapeUriString(url.ToSqlString().Value),
d.ToSqlString().Value
);
i = -1;
break;
}
catch (Exception ex)
{
SqlContext.Pipe.Send("Error:\t" + ex.Message + ". Waiting " + DELAY_ON_ERROR + "ms.");
i--;
Thread.Sleep(DELAY_ON_ERROR);
}
while (i > 0);
if (i == -1)
SqlContext.Pipe.Send("Request is executed." + response);
}
static readonly int RETRY_COUNT = 3;
static readonly int DELAY_ON_ERROR = 50;
public static bool IsNullOrWhiteSpace(this string theString)
{
if (theString == null)
{
return false;
}
if (theString.Trim() == string.Empty)
{
return false;
}
return true;
}
private static void AddHeader(SqlChars H, WebClient client)
{
if (!H.IsNull)
{
string header = H.ToString();
if (!IsNullOrWhiteSpace(header))
client.Headers.Add(HttpRequestHeader.UserAgent, header);
}
}
};
And this how to use in SQL Query
declare #hkey nvarchar(4000) = 'SabaCertificate: 31336132353061666330315E235E756F6E6555E6261536974655E235E656E5F55535E235E536162615E235E24414021463393C69358BE384802BA1BBEAD3B4661862F193021435F7E28A30F7540FE661B9C5F30FDB06C';
declare #endpoint nvarchar(1000) = 'https://libertad-api.sabacloud.com/v1/location?count=10&startPage=1';
select curl.xget(#hkey, #endpoint)
I already test it in PostMan, entering the Header of SabaCertificate, and if it throws a result at me, however, when the certificate is not correct it also throws a response and it is not shown.
Bad Request Example:
{"errorCode":123,"errorMessage":"Invalid or expired Certificate"}
But it also does not give me the answer of the certificate error, that I have to change in my WebClient for this to work.
Added to this I think the certificate is too big because sometimes I get this error:
The identifier that starts with 'SabaCertificate:
31336132353061666330315E235E756F6E6555E6261536974655E235E656E5F55535E235E536162615E235E24414021463393C69358BE384802BA1BBEAD3B4661862F193021435F7E28A30F7540FE661B9C5F30FDB06C'
is too long. Maximum length is 128.
One definite problem in the code is a slight change you made to the original code. In your AddHeader method you have the following line:
client.Headers.Add(HttpRequestHeader.UserAgent, header);
You need to remove the HttpRequestHeader.UserAgent because the code is now creating a "UserAgent" header with a value of whatever you pass in, which is "SabaCertificate: 31336132....".
You will also need to change the security protocols that you are setting as they are not correct. You should try:
ServicePointManager.SecurityProtocol |= (SecurityProtocolType)3072; // TLS 1.2
Since you are using .NET 3.5 via SQL Server 2008 R2, you cannot specify SecurityProtocolType.Tls12 since that value had not yet been added to the enum in Framework Version 3.5, so you have to use the numeric value as shown above. Please keep in mind that the actual ability to do the security protocol is a function of the underlying OS, so it is possible that an older version of Windows / Windows Server does not support TLS 1.2, or might need a registry setting changed in order to do so. You will have to play around with that if you continue to get similar errors from System.Net.TlsStream.
Also, the following error:
The identifier that starts with 'SabaCertificate: 31336...30FDB06C' is too long. Maximum length is 128.
is from user-error. An "identifier" is an item name within SQL Server (objects, Logins, variables, etc). This means that you are doing something different (and wrong) when that error happens, but I can't see how it could be coming from your code, at least not the Get method, as that has no internal interaction with the database.
I have an API that takes in XML and ultimately uploads files based on information in the XML. The uploads are on a schedule (also from XML), and I have tested everything surrounding it and know it works.
I am getting an error about 40% of the time on the first file that I attempt to upload in each time cycle (time cycle = 45 minutes for some files, 30 minutes for others).
Here is my code for the upload:
try {
LoggerFTP.Log("Uploading file: " + filename, false);
// Create the request.
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(appSettingsFTP.ftpUrl + #"/" + filename);
request.Method = WebRequestMethods.Ftp.UploadFile;
request.Timeout = 6000000; //set to 100 minutes
//request.Timeout = -1; //set to infinite
// Add the login credentials.
request.Credentials = new NetworkCredential(appSettingsFTP.ftpLogin, appSettingsFTP.ftpPassword);
// Grab the file contents.
StreamReader sourceStream = new StreamReader(appSettingsFTP.uploadFileDirectory + filename);
byte[] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());
sourceStream.Close();
request.ContentLength = fileContents.Length;
// Copy the file contents to the outgoing stream.
Stream requestStream = request.GetRequestStream();
requestStream.Write(fileContents, 0, fileContents.Length);
requestStream.Close();
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
//Logger.Log(filename.ToString() + " " + "Upload Complete, Status: " + response.StatusCode + " " + response.StatusDescription, false);
//Took response.StatusDescription out because it appears to be creating extra line feeds.
LoggerFTP.Log(filename.ToString() + " " + "Upload Complete, Status: " + response.StatusCode, false);
}
catch (Exception ex) {
LoggerFTP.Log(ex.ToString(), false);
}
I have researched the issue and saw something online about it potentially being a speed thing. Like, there is a timeout. But I have my timeout set to 100 minutes for my FtpWebRequest, so it can't possibly be that? I don't know. This is also running as a service so it is hard to test this aspect of the code.
Here is the exception that is getting logged in my logger (e.ToString):
System.Net.WebException: System error. ---> System.Net.InternalException: System error.
at System.Net.PooledStream.PrePush(Object expectedOwner)
at System.Net.ConnectionPool.PutConnection(PooledStream pooledStream, Object owningObject, Int32 creationTimeout, Boolean canReuse)
at System.Net.FtpWebRequest.FinishRequestStage(RequestStage stage)
at System.Net.FtpWebRequest.SyncRequestCallback(Object obj)
at System.Net.FtpWebRequest.RequestCallback(Object obj)
at System.Net.CommandStream.Dispose(Boolean disposing)
at System.IO.Stream.Close()
at System.IO.Stream.Dispose()
at System.Net.ConnectionPool.Destroy(PooledStream pooledStream)
at System.Net.ConnectionPool.PutConnection(PooledStream pooledStream, Object owningObject, Int32 creationTimeout, Boolean canReuse)
at System.Net.FtpWebRequest.AttemptedRecovery(Exception e)
at System.Net.FtpWebRequest.SubmitRequest(Boolean async)
--- End of inner exception stack trace ---
at System.Net.FtpWebRequest.GetRequestStream()
at CPMainSpringAPIExportsSC.UploadFTP.FTPUploadMethod(String viewname, String filename)
I am getting exactly the same stack trace in an SSIS package attempting to FTP over SSL. It works great without SSL, but as soon as I enable SSL, it blows up.
System.Net.WebException: System error. --->
System.Net.InternalException: System error. at
System.Net.PooledStream.PrePush(Object expectedOwner) at
System.Net.ConnectionPool.PutConnection(PooledStream pooledStream, Object owningObject, Int32 creationTimeout, Boolean canReuse) at
System.Net.FtpWebRequest.FinishRequestStage(RequestStage stage) at
System.Net.FtpWebRequest.SyncRequestCallback(Object obj) at
System.IO.Stream.Close() at
System.Net.ConnectionPool.Destroy(PooledStream pooledStream) at
System.Net.ConnectionPool.PutConnection(PooledStream pooledStream, Object owningObject, Int32 creationTimeout, Boolean canReuse) at
System.Net.FtpWebRequest.AttemptedRecovery(Exception e) at
System.Net.FtpWebRequest.SubmitRequest(Boolean async)
--- End of inner exception stack trace --- at
System.Net.FtpWebRequest.CheckError() at
System.Net.FtpWebRequest.GetRequestStream() at
ST_0ff7348de65a468bb358ab0206e3721f.ScriptMain.Main() in c:\Users\Stephens\AppData\Local\Temp\Vsta\e664c8a71bb647ff9e9dc6ac32d7b615\ScriptMain.cs:line 155 at
System.Net.FtpWebRequest.CheckError() at
System.Net.FtpWebRequest.GetRequestStream() at
ST_0ff7348de65a468bb358ab0206e3721f.ScriptMain.Main() in c:\Users\Stephens\AppData\Local\Temp\Vsta\e664c8a71bb647ff9e9dc6ac32d7b615\ScriptMain.cs:line 155
Because the error is so generic, I decided to look at the .NET source to see if I can catch a clue about what is breaking. If you go here:
http://labs.developerfusion.co.uk/SourceViewer/browse.aspx?assembly=SSCLI&namespace=System.Net#{%22pageClientState%22%3A%22type-2844%2Ccsharp%22}
and skip down to line 281, you will see the definition for internal void PrePush(object expectedOwner) which is what is executing when the exception happens. Here is what it looks like:
internal void PrePush(object expectedOwner)
{
lock (this) {
//3 // The following tests are retail assertions of things we can't allow to happen.
if (null == expectedOwner) {
if (null != m_Owner && null != m_Owner.Target)
throw new InternalException();
// new unpooled object has an owner
}
else {
if (null == m_Owner || m_Owner.Target != expectedOwner)
throw new InternalException();
// unpooled object has incorrect owner
}
m_PooledCount++;
if (1 != m_PooledCount)
throw new InternalException();
// pushing object onto stack a second time
if (null != m_Owner)
m_Owner.Target = null;
}
}
Eventually I discovered that FtpWebRequest only supports explicit FTP (port 21) and not implicit FTP (port 990). This was definitively stated here:
Does .NET FtpWebRequest Support both Implicit (FTPS) and explicit (FTPES)?
Anyway, in my case, it was a firewall issue. Originally we configured for implicit FTP, which was ports 989, 990, 49152-65535 (per the vendor's tech staff). I checked with my network guy and we opened up ports 20, 21, 989, 990 and 40000-655535 for explicit and things worked like a champ afterwards.
However, in your case, you appear to have some connection pool excitement going on. There is a good post on this subject here:
How to improve the Performance of FtpWebRequest?
You might want to take a look at mucking around with your connection pool set up and see if you can make some progress. Hope this helps!
Regards,
Stuart
I know this is an old topic, but for anyone with the same problem, the code that is missing is:
request.EnableSsl = false;
Sorry if this is a bit long winded but I thought better to post more than less.
This is also my First post here, so please forgive.
I have been trying to figure this one out for some time. and to no avail, hoping there is a genius out there who has encountered this before.
This is an intermittent problem and has been hard to reproduce.
The code that I am running simply calls a web service
The Web Service call is in a loop (so we could be doing this a lot, 1500 times or more)
Here is the code that is causing the error:
HttpWebRequest groupRequest = null;
WebResponse groupResponse = null;
try
{
XmlDocument doc = new XmlDocument();
groupRequest = (HttpWebRequest)HttpWebRequest.Create(String.Format(Server.HtmlDecode(Util.GetConfigValue("ImpersonatedSearch.GroupLookupUrl")),userIntranetID));
groupRequest.Proxy = null;
groupRequest.KeepAlive = false;
groupResponse = groupRequest.GetResponse();
doc.Load(groupResponse.GetResponseStream());
foreach (XmlElement nameElement in doc.GetElementsByTagName(XML_GROUP_NAME))
{
foreach (string domain in _groupDomains )
{
try
{
string group = new System.Security.Principal.NTAccount(domain, nameElement.InnerText).Translate(typeof(System.Security.Principal.SecurityIdentifier)).Value;
impersonationChain.Append(";").Append(group);
break;
}
catch{}
} // loop through
}
}
catch (Exception groupLookupException)
{
throw new ApplicationException(String.Format(#"Impersonated Search ERROR: Could not find groups for user<{0}\{1}>", userNTDomain, userIntranetID), groupLookupException);
}
finally
{
if ( groupResponse != null )
{
groupResponse.Close();
}
}
Here is the error that happens sometimes:
Could not find groups for user<DOMAIN\auser> ---> System.IO.IOException: Unable to read
data from the transport connection: An established connection was aborted by the
software in your host machine. ---> System.Net.Sockets.SocketException: An established
connection was aborted by the software in your host machine at
System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags
socketFlags) at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32
size) --- End of inner exception stack trace --- at System.Net.ConnectStream.Read(Byte[]
buffer, Int32 offset, Int32 size) at System.Xml.XmlTextReaderImpl.ReadData() at
System.Xml.XmlTextReaderImpl.ParseDocumentContent() at
System.Xml.XmlLoader.LoadDocSequence
(XmlDocument parentDoc) at System.Xml.XmlDocument.Load(XmlReader reader) at
System.Xml.XmlDocument.Load(Stream inStream) at
MyWebServices.ImpersonatedSearch.PerformQuery(QueryParameters parameters,
String userIntranetID, String userNTDomain)--- End of inner exception stack trace
---at MyWebServices.ImpersonatedSearch.PerformQuery(QueryParameters parameters, String userIntranetID, String userNTDomain)
--- End of inner exception stack trace ---
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message,
WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName,
Object[] parameters) at MyProgram. MyWebServices.ImpersonatedSearch.PerformQuery
(QueryParameters parameters, String userIntranetID, String userNTDomain)
at MyProgram.MyMethod()
Sorry that was alot of code to read through.
This happens about 30 times out of around 1700
You're probably hitting a timeout. First of all, turn the keepalive back on. Second, check the timestamps on the request and reply. If there is a firewall between the sender and receiver, make sure that it isn't closing the connection because of idle timeout. I've had both these problems in the past, although with generic socket programming, not DB stuff.