How to avoid http response timeout exception in C#

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hi,

I am calling this function via url from my desktop application

[HttpPost]
        [AcceptVerbs("POST")]
        async public Task<HttpResponseMessage> SyncItem(long TenantId)
        {
            try
            {
                CashVitae_TM.Tenant oTenant = new CashVitae_TM.Tenant();
                oTenant = oTenant.getTenantByTenantId(TenantId);

                string dbUN = oTenant.DBUN;
                string dbPass = oTenant.DBPass;

                long SavedItemId = 0;
                Item oitem = new Item();
                
                byte[] data = await Request.Content.ReadAsByteArrayAsync();
                string JsonInventory = System.Text.Encoding.Default.GetString(data);
                List<InventoryItem> lstInventoryItem = JsonConvert.DeserializeObject<List<InventoryItem>>(JsonInventory);
                foreach (var Inventory in lstInventoryItem)
                {
                    Item oitem1 = new Item();
                    string ItemCode = Inventory.ItemCode;
                    Item item = oitem.getItembyCode(TenantId, dbUN, dbPass, ItemCode);
                    if (item != null)
                    {
                        oitem1.Id = item.Id;
                        oitem1.Code = item.Code;
                        oitem1.CreatedDtTm = item.CreatedDtTm;
                    }
                    else
                    {
                        oitem1.Id = 0;
                        oitem1.Code = Inventory.ItemCode;
                        oitem1.CreatedDtTm = DateTime.Now;
                    }
                    oitem1.TenantId = TenantId;
                    oitem1.Name = Inventory.Name;
                    oitem1.Category = Convert.ToString(Inventory.Category);
                    oitem1.CostMethod = Convert.ToString(Inventory.MethodName);
                    oitem1.Location = Convert.ToString(Inventory.Location);
                    oitem1.UnitPrice = Inventory.UnitPrice;
                    oitem1.Quantity = Inventory.QtyAvailable;
                    oitem1.QtyOnHand = Inventory.QtyOnHand;
                    oitem1.IsActive = Inventory.IsActive;
                    oitem1.ModifiedDtTm = DateTime.Now;
                    SavedItemId = oitem1.Save(TenantId, dbUN, dbPass);
                }   
                return new HttpResponseMessage(HttpStatusCode.OK);
            }
            catch (Exception ex)
            {
                return Request.CreateErrorResponse(HttpStatusCode.InternalServerError, ex.Message);
            }
        }

and this my desktop application code

try
                        {
                            string str = Inventory();
                            using (WebClient httpclient = new WebClient())
                            {
                                //string str = "abc";
                                string url = "http://localhost:51411/api/MobileAPI/SyncItem?TenantId=" + CommonClass.tenantId;

                                ASCIIEncoding encoding = new ASCIIEncoding();
                                byte[] data = encoding.GetBytes(str);

                                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
                                request.Method = "Post";
                                request.ContentLength = data.Length;
                                request.ContentType = "application/json";

                                using (Stream stream = request.GetRequestStream())
                                {
                                    stream.Write(data, 0, data.Length);
                                }
                                request.Timeout = Timeout.Infinite;
                                request.KeepAlive = true;
                                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                                response.StatusCode.ToString();
                            }
                        }
                        catch(Exception ex)
                        {
                            throw ex;
                        }

but i am getting operation has timeout exception in my desktop

What I have tried:

I am calling a method in my API to save data in web DB
I tried

request.Timeout = Timeout.Infinite;
                                request.KeepAlive = true;

then also same error i am getting, how i can handle timeout exception.
one solution I know that split data but if anyone can give else solution without split data, only once i want to send whole data.

Posted 14-Jun-17 18:53pm

Member 10192073

Updated 21-Jun-17 20:34pm

v2

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Comments

Richard Deeming 15-Jun-17 13:36pm

Start by working out which operation has timed out. It's possible that the timeout error is on the server, not the client.

Member 10192073 15-Jun-17 13:44pm

I wil check, but I have splited and now I am sending data with 100 per call....

One thing I want to tell that
Even in my desktop application I was getting timeout exception but my web API was working that time too.
Means when I got timeout exception in my desktop application that time in my web DB records inserted 156 rows but after just few seconds I again run select query in web DB I got 258 records again after few seconds I run select query and got 468 rows means even timeout exception was coming in desktop but operation was going in my web code

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Bhola Ram Sahu · Answer 1 · 2017-06-21T20:34:00

Very basic Exception handling can be one of the solutions of your problem.

try
{
   using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
   {
      WebHeaderCollection headers = response.Headers;    
      using (Stream answer = response.GetResponseStream())
      {
          // Do stuff
      }
   }
}
catch (WebException e)
{
   if (e.Status == WebExceptionStatus.Timeout)
   {
      // Handle timeout exception
   }
   else throw;
}