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

   1 //
   2 // ServicePointTest.cs - NUnit Test Cases for System.Net.ServicePoint
   3 //
   4 // Authors:
   5 //   Lawrence Pit (loz@cable.a2000.nl)
   6 //   Martin Willemoes Hansen (mwh@sysrq.dk)
   7 //
   8 // (C) 2003 Martin Willemoes Hansen
   9 //
  10
  11 using NUnit.Framework;
  12 using System;
  13 using System.Collections;
  14 using System.IO;
  15 using System.Net;
  16 using System.Reflection;
  17 using System.Threading;
  18
  19 namespace MonoTests.System.Net
  20 {
  21
  22 [TestFixture]
  23 public class ServicePointTest
  24 {
  25         static private int max;
  26
  27 #if !FEATURE_NO_BSD_SOCKETS
  28         [SetUp]
  29         public void SaveMax () {
  30                 max = ServicePointManager.MaxServicePoints;
  31                 ServicePointManager.MaxServicePoints = 0;
  32         }
  33
  34         [TearDown]
  35         public void RestoreMax () {
  36                 ServicePointManager.MaxServicePoints = max;
  37         }
  38 #endif
  39
  40         [Test]
  41                 [Category ("NotWorking")]
  42         public void All ()
  43         {
  44                 ServicePoint p = ServicePointManager.FindServicePoint (new Uri ("mailto:xx@yyy.com"));
  45                 //WriteServicePoint ("A servicepoint that isn't really", p);
  46
  47                 ServicePointManager.MaxServicePoints = 2;
  48                 ServicePoint exampleCom = ServicePointManager.FindServicePoint (new Uri ("http://www.example.com"));
  49                 try {
  50                         ServicePoint exampleOrg = ServicePointManager.FindServicePoint (new Uri ("http://www.example.org"));
  51                         Assert.Fail ("#1");
  52                 } catch (InvalidOperationException) { }
  53                 ServicePointManager.MaxServicePoints = 0;
  54
  55                 //WriteServicePoint ("example before getting a webrequest", example);
  56
  57                 HttpWebRequest req = (HttpWebRequest) WebRequest.Create ("http://www.example.com");
  58                 HttpWebResponse res = (HttpWebResponse) req.GetResponse ();
  59
  60 #if FOUND_SOME_OTHER_URL
  61                 // URL is no longer found, disabled the test until a more reliable URL is found :P
  62                 //WriteServicePoint ("example after getting a response", example);
  63                 ServicePoint example2 = ServicePointManager.FindServicePoint (new Uri ("http://www.example.com/dilbert.html"));
  64                 Assert.AreEqual (example, example2, "#equals");
  65                 res.Close ();
  66 #endif
  67
  68                 // in both instances property CurrentConnections is 0 according to ms.net.
  69                 // let's see what it says when we do async operations...
  70
  71                 HttpWebRequest req2 = (HttpWebRequest) WebRequest.Create ("http://www.example.com");
  72                 req2.Method = "PUT";
  73                 IAsyncResult async = req2.BeginGetRequestStream (null, null);
  74                 //WriteServicePoint ("after async BeginGetRequestStream", example);
  75                 // CurrentConnections: 1
  76                 Stream stream2 = req2.EndGetRequestStream (async);
  77                 //WriteServicePoint ("after async EndGetRequestStream", example);
  78                 // CurrentConnections: 1
  79                 stream2.Close ();
  80
  81                 req2 = (HttpWebRequest) WebRequest.Create ("http://www.example.com");
  82                 async = req2.BeginGetResponse (null, null);
  83                 //WriteServicePoint ("after async BeginGetResponse", example);
  84                 // CurrentConnections: 2
  85                 WebResponse res2 = req2.EndGetResponse (async);
  86                 //WriteServicePoint ("after async EndGetResponse", example);
  87                 // CurrentConnections: 0
  88                 // curious that after you get the webresponse object CurrentConnections is set to 0.
  89                 // you'd think that you'd still be connected until you close the webresponse..
  90                 //Console.WriteLine ("ContentLength: " + res2.ContentLength);
  91                 res2.Close ();
  92
  93                 ServicePoint sp2;
  94 #if FOUND_SOME_OTHER_URL
  95                 // unless of course some buffering is taking place.. let's check
  96                 Uri uri2 = new Uri ("http://freedesktop.org/Software/pkgconfig/releases/pkgconfig-0.15.0.tar.gz");
  97                 sp2 = ServicePointManager.FindServicePoint (uri2);
  98                 req2 = (HttpWebRequest) WebRequest.Create (uri2);
  99                 async = req2.BeginGetResponse (null, null);
 100                 //WriteServicePoint ("Large file: after async BeginGetResponse", sp2);
 101                 // CurrentConnections: 1
 102                 res2 = req2.EndGetResponse (async);
 103                 //WriteServicePoint ("Large file: after async EndGetResponse", sp2);
 104                 // CurrentConnections: 1
 105                 // and so it shows
 106                 //Console.WriteLine ("ContentLength: " + res2.ContentLength);
 107                 res2.Close ();
 108 #endif
 109
 110
 111                 // what's the limit of the cache?
 112                 req2 = (HttpWebRequest) WebRequest.Create ("http://www.example.org/");
 113                 res2 = req2.GetResponse ();
 114                 sp2 = ServicePointManager.FindServicePoint (new Uri("http://www.example.org/"));
 115                 //WriteServicePoint ("example", sp2);
 116                 //Console.WriteLine ("ContentLength: " + res2.ContentLength);
 117                 // CurrentConnections: 1
 118                 res2.Close ();
 119                 // curious other effect: address is actually the full Uri of the previous request
 120                 // anyways, buffer is probably 4096 bytes
 121         }
 122
 123         // try getting the stream to 5 web response objects
 124         // while ConnectionLimit equals 2
 125
 126         [Test]
 127         [Category ("NotWorking")]
 128         public void ConnectionLimit ()
 129         {
 130                 // the default is already 2, just in case it isn't..
 131                 ServicePointManager.DefaultConnectionLimit = 5;
 132
 133                 Uri uri = new Uri ("http://www.example.com/");
 134                 ServicePoint sp = ServicePointManager.FindServicePoint (uri);
 135                 WebResponse [] res = new WebResponse [5];
 136                 for (int i = 0; i < 5; i++) {
 137                         //Console.WriteLine ("GOT1 : " + i);
 138                         HttpWebRequest req = (HttpWebRequest) WebRequest.Create (uri);
 139                         //Console.WriteLine ("GOT2 : " + i);
 140                         res [i] = req.GetResponse ();
 141                         //WriteServicePoint ("after getting " + (i + 1) + " web response objects", sp);
 142                 }
 143
 144                 for (int i = 0; i < 5; i++) {
 145                         Stream stream = res [i].GetResponseStream();
 146                         //Console.WriteLine ("Reading stream: " + i + " : " + stream);
 147                         int len = 0;
 148                         while (stream.ReadByte () != -1)
 149                                 len++;
 150                         //Console.WriteLine ("Finished reading: " + len + " bytes");
 151                 }
 152
 153                 for (int i = 0; i < 5; i++) {
 154                         res [i].Close ();
 155                 }
 156         }
 157
 158         [Test]
 159         [Category ("NotWorking")] // #A1 fails
 160         public void EndPointBind ()
 161         {
 162                 Uri uri = new Uri ("http://www.example.com/");
 163                 ServicePoint sp = ServicePointManager.FindServicePoint (uri);
 164
 165                 HttpWebRequest req = (HttpWebRequest) WebRequest.Create (uri);
 166
 167                 bool called = false;
 168                 sp.BindIPEndPointDelegate = delegate {
 169                         Assert.IsTrue (!called);
 170                         called = true;
 171                         return null;
 172                 };
 173                 req.GetResponse ().Close ();
 174
 175                 Assert.IsTrue (called, "#A1");
 176
 177                 req = (HttpWebRequest) WebRequest.Create (uri);
 178                 called = false;
 179                 sp.BindIPEndPointDelegate = delegate(ServicePoint point, IPEndPoint remote, int times) {
 180                         Assert.IsTrue (times < 5);
 181                         called = true;
 182                         return new IPEndPoint(IPAddress.Parse("0.0.0.0"), 12345 + times);
 183                 };
 184                 req.GetResponse ().Close ();
 185
 186                 Assert.IsTrue (called, "#A2");
 187         }
 188
 189         [Test]
 190         [Category ("RequiresBSDSockets")] // Tests internals, so it doesn't make sense to assert that PlatformNotSupportedExceptions are thrown.
 191         public void DnsRefreshTimeout ()
 192         {
 193                 const int dnsRefreshTimeout = 2000;
 194
 195                 ServicePoint sp;
 196                 IPHostEntry host0, host1, host2;
 197                 Uri uri;
 198                 PropertyInfo hostEntryProperty;
 199
 200                 ServicePointManager.DnsRefreshTimeout = dnsRefreshTimeout;
 201
 202                 uri = new Uri ("http://localhost/");
 203                 sp = ServicePointManager.FindServicePoint (uri);
 204
 205                 hostEntryProperty = typeof (ServicePoint).GetProperty ("HostEntry", BindingFlags.NonPublic | BindingFlags.Instance);
 206
 207                 host0 = hostEntryProperty.GetValue (sp, null) as IPHostEntry;
 208                 host1 = hostEntryProperty.GetValue (sp, null) as IPHostEntry;
 209
 210                 Assert.AreSame (host0, host1, "HostEntry should result in the same IPHostEntry object.");
 211
 212 #if !WASM
 213                 Thread.Sleep (dnsRefreshTimeout * 2);
 214                 host2 = hostEntryProperty.GetValue (sp, null) as IPHostEntry;
 215
 216                 Assert.AreNotSame(host0, host2, "HostEntry should result in a new IPHostEntry " +
 217                                 "object when DnsRefreshTimeout is reached.");
 218 #endif
 219         }
 220
 221 // Debug code not used now, but could be useful later
 222 /*
 223         private void WriteServicePoint (string label, ServicePoint sp)
 224         {
 225                 Console.WriteLine ("\n" + label);
 226                 Console.WriteLine ("Address: " + sp.Address);
 227                 Console.WriteLine ("ConnectionLimit: " + sp.ConnectionLimit);
 228                 Console.WriteLine ("ConnectionName: " + sp.ConnectionName);
 229                 Console.WriteLine ("CurrentConnections: " + sp.CurrentConnections);
 230                 Console.WriteLine ("IdleSince: " + sp.IdleSince);
 231                 Console.WriteLine ("MaxIdletime: " + sp.MaxIdleTime);
 232                 Console.WriteLine ("ProtocolVersion: " + sp.ProtocolVersion);
 233                 Console.WriteLine ("SupportsPipelining: " + sp.SupportsPipelining);
 234         }
 235 */
 236 }
 237 }
 238