A connection attempt failed because the connected party did not properly respond after a period of time using WebClient

Question

I am using the following code which is working on local machine  but when i tried the same code on server it throws me error      A connection attempt failed because the connected party did not properly respond after a period of time  or established connection   failed because connected host has failed to respond   Here is my code   WebClient client   new WebClient       Add a user agent header in case the     requested URI contains a query    client Headers Add   ID    Mozilla 4 0  compatible  MSIE 6 0  Windows NT 5 2   NET CLR 1 0 3705      Stream data   client OpenRead  http       Request ServerVariables  HTTP HOST     Request ApplicationPath     PageDetails aspx ModuleID     ID   StreamReader reader   new StreamReader data   string s   reader ReadToEnd    Console WriteLine s   data Close    reader Close      I am getting error on   Stream data   client OpenRead  http       Request ServerVariables  HTTP HOST     Request ApplicationPath     PageDetails aspx ModuleID     ID     is it due any firewall setting

User · Answer

Is the URL that this code is making accessible in the browser?

http://" + Request.ServerVariables["HTTP_HOST"] + Request.ApplicationPath + "/PageDetails.aspx?ModuleID=" + ID

First thing you need to verify is that the URL you are making is correct. Then check in the browser to see if it is browsing. then use Fiddler tool to check what is passing over the network. It may be that URL that is being called through code is wrongly escaped.

Then check for firewall related issues.

User · Answer

I know it s an old post but I came across the exact same issue and I managed to  use this by turning off MALWAREBYTES program which was causing the issue

User · Answer

I had a similar problem and had to convert the URL from string to Uri object using   Uri myUri   new Uri URLInStringFormat  UriKind Absolute      URLInStringFormat is your URL  Try to connect using the Uri instead of the string as   WebClient client   new WebClient    client OpenRead myUri

User · Answer

I know this post was posted 5 years ago  but I had this problem recently  It may be cause by corporate network limitations  So my solution is letting WebClient go through proxy server to make the call  Here is the code which worked for me  Hope it helps           using  WebClient client   new WebClient                          client Encoding   Encoding UTF8              WebProxy proxy   new WebProxy  your proxy host IP   port               client Proxy   proxy              string sourceUrl    xxxxxx               try                               using  Stream stream   client OpenRead new Uri noaaSourceUrl                                                                                               catch  Exception ex                                throw

User · Answer

setting the proxy address explicitly in web config solved my problem   lt system net gt        lt defaultProxy gt                lt proxy usesystemdefault    false  proxyaddress  http   address port  bypassonlocal  false   gt        lt  defaultProxy gt    lt  system net gt    Resolving the    TCP error code 10060  A connection attempt failed       while consuming a web service

User · Answer

In my case I got this error because my domain was not listed in Hosts file on Server  If in future anyone else is facing the same issue  try making entry in Host file and check  Path   C  Windows System32 drivers etc FileName  hosts

User · Answer

I had this problem  Code worked fine when running locally but not when on server  Using psPing  https   technet microsoft com en-us sysinternals psping aspx  I realised the applications port wasn t returning anything   Turned out to be a firewall issue  I hadn t enabled my applications port in the Windows Firewall   Administrative Tools   Windows Firewall with Advanced Security added my applications port to the Inbound Rules and it started working   Somehow the application port number had got changed  so took a while to figure out what was going on - so thought I d share this possibility in case it saves someone else time

User · Answer

First Possibility  The encrypted string in the Related Web config File should be same as entered in the connection string  which is shown above  And also  when you change anything in the  Registry Editor  or regedit exe  as written at Run   then after any change  close the registry editor and reset your Internet Information Services by typing IISRESET at Run  And then login to your environment  Type Services msc on run and check    Status of ASP NET State Services is started  If not  then right click on it  through Properties  change its Startup type to automatic  Iris ReportManager Service of that particular bank is Listed as Started or not  If its Running  It will show  IRIS REPORT MANAGER SERVICE  as started in the list  If not  then run it by clicking IRIS REPORTMANAGER EXE   Then Again RESET IIS

User · Answer

It might be issue by proxy settings in server  You can try by disabling proxy setting     lt defaultProxy enabled  false    gt

User · Answer

Adding the following block of code in web config solves my problem    lt system net gt       lt defaultProxy enabled  false   gt       lt  defaultProxy gt     lt  system net gt

User · Answer

I know this ticket is old  but I just ran into this issue and I thought I would post what was happening to me and how I resolved it   In my service I was calling there was a call to another web service   Like a goof  I forgot to make sure that the DNS settings were correct when I published the web service  thus my web service  when published  was trying to call from api myproductionserver local  rather than api myproductionserver com   It was the backend web service that was causing the timeout   Anyways  I thought I would pass this along

[c#] "A connection attempt failed because the connected party did not properly respond after a period of time" using WebClient

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