Re: [MonoTouch] Anyone have a hint on HttpWebRequest and 64K limit?

Mark Handzlik Thu, 07 Jul 2011 07:50:00 -0700

Thanks for reply Jason,

WCF binding not in play to my knowledge as this is a pure POST. I can get large sizes of data down from server but a send error 14's on anything > 64K

Shared App pool is where this site is pointed, .net 3.5 sp1 installed and IIS7

From: Jason Awbrey <[email protected]>
Date: Thu, 7 Jul 2011 10:39:53 -0400
To: Mark Handzlik <[email protected]>
Cc: "[email protected]" <[email protected]>
Subject: Re: [MonoTouch] Anyone have a hint on HttpWebRequest and 64K limit?

Have you checked the MaxReceivedMessageSize setting on your WCF binding?

What versions of IIS and .NET are you running on the server?

On Thu, Jul 7, 2011 at 9:03 AM, Mark Handzlik <[email protected]> wrote:

Have an issue with send requests from Ipads that work fine when we send under 64K size. When request goes over 64K we receive Error 400 from server. Tried all types of settings on server in web.config section

maxRequestLength="2097151"

requestLengthDiskThreshold="400000"

Registry settings for

MaxRequestBytes and MaxFieldLength.

Still Error 400

Would really appreciate this as users can now have to be careful to sync data often and small to have operational apps.

Below is the MT code section for client send:

   webRequest = (HttpWebRequest)WebRequest.Create(requestUri.ToString());

if (this._credentials != null)

   {

   webRequest.Credentials = this._credentials;

   }

   // Set the method type

   webRequest.Method = "POST";

   webRequest.Accept = "application/atom+xml";

   webRequest.ContentType = "application/atom+xml";

   webRequest.Timeout = 1200000;

switch (request.RequestType)

   {

   case CacheRequestType.UploadChanges:

return ProcessUploadRequest(webRequest, request);

case CacheRequestType.DownloadChanges:

   default:

   return ProcessDownloadRequest(webRequest, request);

   }

   }

   private object ProcessUploadRequest(HttpWebRequest webRequest, CacheRequest request)

   {

   using (Stream memoryStream = new MemoryStream())

   {

   // Create a SyncWriter to write the contents

   this._syncWriter = new ODataAtomWriter(base.BaseUri);

   this._syncWriter.StartFeed(true, request.KnowledgeBlob ?? new byte[0]);

   foreach (IOfflineEntity entity in request.Changes)

   {

   // Skip tombstones that dont have a ID element.

   if (entity.ServiceMetadata.IsTombstone && string.IsNullOrEmpty(entity.ServiceMetadata.Id))

   {

   continue;

   }

   string tempId = null;

   // Check to see if this is an insert. i.e ServiceMetadata.Id is null or empty

   if (string.IsNullOrEmpty(entity.ServiceMetadata.Id))

   {

   if (TempIdToEntityMapping == null)

   {

   TempIdToEntityMapping = new Dictionary<string, IOfflineEntity>();

   }

   tempId = Guid.NewGuid().ToString();

   TempIdToEntityMapping.Add(tempId, entity);

   }

   this._syncWriter.AddItem(entity, tempId);

   }

   this._syncWriter.WriteFeed(XmlWriter.Create(memoryStream));

   memoryStream.Flush();

   // Set the content length

   webRequest.ContentLength = memoryStream.Position;

   using (Stream requestStream = webRequest.GetRequestStream())

   {

   CopyStreamContent(memoryStream, requestStream);

   // Close the request stream

   requestStream.Flush();

   requestStream.Close();

   }

   }

   // Fire the Before request handler

   this.FirePreRequestHandler(webRequest);

   // Get the response



   HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse();

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Re: [MonoTouch] Anyone have a hint on HttpWebRequest and 64K limit?

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