mono/mcs/class/System/Test/System.Net/ServicePointTest.cs

//
// ServicePointTest.cs - NUnit Test Cases for System.Net.ServicePoint
//
// Author:
//   Lawrence Pit ([email protected])
//

using NUnit.Framework;
using System;
using System.Collections;
using System.IO;
using System.Net;
using System.Threading;

namespace MonoTests.System.Net
{

public class ServicePointTest : TestCase
{
        public ServicePointTest () :
                base ("[MonoTests.System.Net.ServicePointTest]") {}

        public ServicePointTest (string name) : base (name) {}

        protected override void SetUp () {}

        protected override void TearDown () {}

        public static ITest Suite
        {
                get {
                        return new TestSuite (typeof (ServicePointTest));
                }
        }
        
        public void TestAll ()
        {
		try {
			ServicePoint p = ServicePointManager.FindServicePoint (new Uri ("mailto:[email protected]"));
			WriteServicePoint ("A servicepoint that isn't really", p);			
			
			ServicePointManager.MaxServicePoints = 2;
			ServicePoint google = ServicePointManager.FindServicePoint (new Uri ("http://www.google.com"));
			try {			
				ServicePoint slashdot = ServicePointManager.FindServicePoint (new Uri ("http://www.slashdot.org"));
				Fail ("#1");
			} catch (InvalidOperationException) { }
			ServicePointManager.MaxServicePoints = 0;
			
			WriteServicePoint ("google before getting a webrequest", google);
			
			HttpWebRequest req = (HttpWebRequest) WebRequest.Create ("http://www.google.com");
			HttpWebResponse res = (HttpWebResponse) req.GetResponse ();			
			
			WriteServicePoint ("google after getting a response", google);
			ServicePoint google2 = ServicePointManager.FindServicePoint (new Uri ("http://www.google.com/dilbert.html"));
			AssertEquals ("#equals", google, google2);
			res.Close ();
			
			// in both instances property CurrentConnections is 0 according to ms.net.
			// let's see what it says when we do async operations...
			
			HttpWebRequest req2 = (HttpWebRequest) WebRequest.Create ("http://www.google.com");
			req2.Method = "PUT";
			IAsyncResult async = req2.BeginGetRequestStream (null, null);
			WriteServicePoint ("after async BeginGetRequestStream", google);
			// CurrentConnections: 1
			Stream stream2 = req2.EndGetRequestStream (async);
			WriteServicePoint ("after async EndGetRequestStream", google);
			// CurrentConnections: 1
			stream2.Close ();
			
			req2 = (HttpWebRequest) WebRequest.Create ("http://www.google.com");
			async = req2.BeginGetResponse (null, null);
			WriteServicePoint ("after async BeginGetResponse", google);
			// CurrentConnections: 2
			WebResponse res2 = req2.EndGetResponse (async);
			WriteServicePoint ("after async EndGetResponse", google);
			// CurrentConnections: 0			
			// curious that after you get the webresponse object CurrentConnections is set to 0.
			// you'd think that you'd still be connected until you close the webresponse..
			Console.WriteLine ("ContentLength: " + res2.ContentLength);
			res2.Close ();
			
			
			// unless of course some buffering is taking place.. let's check
			Uri uri2 = new Uri ("http://www.apache.org/dist/httpd/httpd-2.0.36.tar.gz");
			ServicePoint sp2 = ServicePointManager.FindServicePoint (uri2);
			req2 = (HttpWebRequest) WebRequest.Create (uri2);
			async = req2.BeginGetResponse (null, null);
			WriteServicePoint ("Large file: after async BeginGetResponse", sp2);
			// CurrentConnections: 1
			res2 = req2.EndGetResponse (async);
			WriteServicePoint ("Large file: after async EndGetResponse", sp2);
			// CurrentConnections: 1
			// and so it shows
			Console.WriteLine ("ContentLength: " + res2.ContentLength);
			res2.Close ();
			
			
			// what's the limit of the cache?
			req2 = (HttpWebRequest) WebRequest.Create ("http://www.apache.org/");
			res2 = req2.GetResponse ();
			sp2 = ServicePointManager.FindServicePoint (new Uri("http://www.apache.org/"));
			WriteServicePoint ("apache", sp2);
			Console.WriteLine ("ContentLength: " + res2.ContentLength);
			// CurrentConnections: 1
			res2.Close ();
			// curious other effect: address is actually the full Uri of the previous request
			// anyways, buffer is probably 4096 bytes

			
		} catch (WebException e) {
			Console.WriteLine("\nThe following Exception was raised : {0}", e.Message);
		}
	}

	// try getting the stream to 5 web response objects	
	// while ConnectionLimit equals 2
	/*
	public void TestConnectionLimit ()
	{		
		try {
			// the default is already 2, just in case it isn't..
			ServicePointManager.DefaultConnectionLimit = 2;
			
			Uri uri = new Uri ("http://www.apache.org/dist/httpd/httpd-2.0.36.tar.gz");
			ServicePoint sp = ServicePointManager.FindServicePoint (uri);			
			WebResponse [] res = new WebResponse [5];
			for (int i = 0; i < 5; i++) {
				Console.WriteLine ("GOT1 : " + i);
				HttpWebRequest req = (HttpWebRequest) WebRequest.Create (uri);
				Console.WriteLine ("GOT2 : " + i);
				res [i] = req.GetResponse ();
				WriteServicePoint ("after getting " + (i + 1) + " web response objects", sp);
			}
			
			for (int i = 0; i < 5; i++) {
				Stream stream = res [i].GetResponseStream();
				Console.WriteLine ("Reading stream: " + i + " : " + stream);
				int len = 0;
				while (stream.ReadByte () != -1)
					len++;
				Console.WriteLine ("Finished reading: " + len + " bytes");
			}
			
			for (int i = 0; i < 5; i++) {
				res [i].Close ();
			}
		} catch (WebException e) {
			Console.WriteLine("\nThe following Exception was raised : {0}", e.Message);
		}		
	}
	*/
	
	private void WriteServicePoint (string label, ServicePoint sp)
	{
		Console.WriteLine ("\n" + label);
		Console.WriteLine ("Address: " + sp.Address);
		Console.WriteLine ("ConnectionLimit: " + sp.ConnectionLimit);
		Console.WriteLine ("ConnectionName: " + sp.ConnectionName);
		Console.WriteLine ("CurrentConnections: " + sp.CurrentConnections);
		Console.WriteLine ("IdleSince: " + sp.IdleSince);
		Console.WriteLine ("MaxIdletime: " + sp.MaxIdleTime);
		Console.WriteLine ("ProtocolVersion: " + sp.ProtocolVersion);
		Console.WriteLine ("SupportsPipelining: " + sp.SupportsPipelining);		
	}
}

}