Httpwebrequest from wcf service
I am new to WCF, I have created one service for httpwebrequest for SSRS report and submit the report in PDF or EXCEL format and save it to a specific location on disk.
I am calling this service from a web application on a button click event. But it gives error in GetResponse ()
The remote server returned an error: (403) Forbidden
Also, I am generating the same code in a console application, it works great.
below is my code
public class ReportGenerator : IReportGenerator
{
public void ReportRequest()
{
try
{
string URL = "http://localhost/ReportServer2008?/ssrswcf/ssrswcftest";
string Command = "Render";
string Format = "PDF";//"EXCEL"
URL = URL + "&rs:Command=" + Command + "&rs:Format=" + Format + "&sid=5";
System.Net.HttpWebRequest Req = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(URL);
Req.UseDefaultCredentials = true;
Req.Method = "GET";
string path = @"C:\ssrswcftest\" + Convert.ToString(Guid.NewGuid()) + @".pdf";
System.Net.WebResponse objResponse = Req.GetResponse();
System.IO.FileStream fs = new System.IO.FileStream(path, System.IO.FileMode.Create);
System.IO.Stream stream = objResponse.GetResponseStream();
byte[] buf = new byte[1024];
int len = stream.Read(buf, 0, 1024);
while (len > 0)
{
fs.Write(buf, 0, len);
len = stream.Read(buf, 0, 1024);
}
stream.Close();
fs.Close();
}
catch (WebException ex)
{
//
}
catch (Exception ex)
{
//
}
}
}
Below are the details
WCF hosted using IIS with error
Request header
GET /ReportServer2008?/ssrswcf/ssrswcftest&rs:Command=Render&rs:Format=PDF&sid=5 HTTP/1.1
Authorization: Negotiate some_long_string
Host: xyz
Response header
HTTP/1.1 403 Forbidden
Cache-Control: private
Content-Length: 2925
Content-Type: text/html; charset=utf-8
Server: Microsoft-HTTPAPI/2.0
X-AspNet-Version: 2.0.50727
Date: Mon, 22 Jun 2015 15:39:29 GMT
WCF running using a console application
Request header
GET /ReportServer2008?/ssrswcf/ssrswcftest&rs:Command=Render&rs:Format=PDF&sid=5 HTTP/1.1
Authorization: Negotiate some_long_string
Host: xyz
Response header
HTTP/1.1 200 OK
Cache-Control: private
Content-Length: 25653
Content-Type: application/pdf
Expires: Mon, 22 Jun 2015 16:16:42 GMT
Last-Modified: Mon, 22 Jun 2015 16:17:43 GMT
Set-Cookie: RSExecutionSession%3a%2fssrswcf%2fssrswcftest=aywu4s45sefnmw45z50bn2vh; path=/
Server: Microsoft-HTTPAPI/2.0
X-AspNet-Version: 2.0.50727
FileExtension: pdf
Content-Disposition: attachment; filename="ssrswcftest.pdf"
Date: Mon, 22 Jun 2015 16:17:42 GMT
It just needs credentials when hosted in IIS. it worked from the console because this console app runs as administrator.
public class ReportGenerator : IReportGenerator
{
public void ReportRequest()
{
try
{
string URL = "http://localhost/ReportServer2008?/ssrswcf/ssrswcftest";
string Command = "Render";
string Format = "PDF";//"EXCEL"
URL = URL + "&rs:Command=" + Command + "&rs:Format=" + Format + "&sid=5";
System.Net.HttpWebRequest Req = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(URL);
Req.Credentials = new NetworkCredential(@"username", "password");
Req.Method = "GET";
string path = @"C:\ssrswcftest\" + Convert.ToString(Guid.NewGuid()) + @".pdf";
System.Net.WebResponse objResponse = Req.GetResponse();
System.IO.FileStream fs = new System.IO.FileStream(path, System.IO.FileMode.Create);
System.IO.Stream stream = objResponse.GetResponseStream();
byte[] buf = new byte[1024];
int len = stream.Read(buf, 0, 1024);
while (len > 0)
{
fs.Write(buf, 0, len);
len = stream.Read(buf, 0, 1024);
}
stream.Close();
fs.Close();
}
catch (WebException ex)
{
//
}
catch (Exception ex)
{
//
}
}
}
Authorization: Negotiate
indicates that authentication is in use. Your WCF service probably does not have the required credentials. Ask the service owner what kind of authentication is required and configure it.