Calling a restful web service from a script task

Question

Hi.  I'm weak in c# but am looking to accomplish this...
I want to call a RESTful web service from an ssis script task.  I don't want to create a web service so I'm hoping there is some publicly available one I can practice with before our web team provides me with the service I'll eventually use.  Can
the community provide an example?  I wish I had more but my knowledge is very limited except for using ssis in more sql centric apps.  It would be great if I could exercise both a get and put verb but I understand i'll be lucky if I can even get
a get to work. 
Here is an example of a get I found on the web but I don't know if its a viable candidate for me to practice with from my package...
using System;
using System.IO;
using System.Net;
using System.Text;
// Create the web request
HttpWebRequest request = WebRequest.Create("http://developer.yahoo.com/") as HttpWebRequest;
// Get response
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
// Get the response stream
StreamReader reader = new StreamReader(response.GetResponseStream());
// Console application output
Console.WriteLine(reader.ReadToEnd());
and in the same article an example of a put ...
// We use the HttpUtility class from the System.Web namespace
using System.Web;
Uri address = new Uri("http://api.search.yahoo.com/ContentAnalysisService/V1/termExtraction");
// Create the web request
HttpWebRequest request = WebRequest.Create(address) as HttpWebRequest;
// Set type to POST
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
// Create the data we want to send
string appId = "YahooDemo";
string context = "Italian sculptors and painters of the renaissance"
+ "favored the Virgin Mary for inspiration";
string query = "madonna";
StringBuilder data = new StringBuilder();
data.Append("appid=" + HttpUtility.UrlEncode(appId));
data.Append("&context=" + HttpUtility.UrlEncode(context));
data.Append("&query=" + HttpUtility.UrlEncode(query));
// Create a byte array of the data we want to send
byte[] byteData = UTF8Encoding.UTF8.GetBytes(data.ToString());
// Set the content length in the request headers
request.ContentLength = byteData.Length;
// Write data
using (Stream postStream = request.GetRequestStream())
postStream.Write(byteData, 0, byteData.Length);
// Get response
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
// Get the response stream
StreamReader reader = new StreamReader(response.GetResponseStream());
// Console application output
Console.WriteLine(reader.ReadToEnd());
 

Answer 1

Hi
db042190,
These kinds of operations are commonly found outside the SSIS section of the forum, you just need to "borrow" the code and wrap into the Script Task. And based on what you see you are on the right tracks.
One thing you need to be aware of: in production such RESTfull call usually lead to a fiasco for the machine residing in some kind of DMZ or Firewall rules prohibiting these methods or you need a proxy account to run the package and you face unbeggable admins
who resist to relaxing security.
My suggestion is to go the easy route: write the app up as a console, standalone app - it will be easier to debug and there will be complete examples of them in abundance on the web.
Arthur
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