/// <summary>Create with the specified URLOpeners.</summary>
/// <remarks>
/// Create with the specified URLOpeners. Original url is used to open the
/// stream for the first time. Resolved url is used in subsequent requests.
/// </remarks>
/// <param name="o">Original url</param>
/// <param name="r">Resolved url</param>
/// <exception cref="System.IO.IOException"/>
public ByteRangeInputStream(ByteRangeInputStream.URLOpener o, ByteRangeInputStream.URLOpener
r)
{
this.originalURL = o;
this.resolvedURL = r;
GetInputStream();
}
protected internal virtual InputStream OpenInputStream()
{
// Use the original url if no resolved url exists, eg. if
// it's the first time a request is made.
bool resolved = resolvedURL.GetURL() != null;
ByteRangeInputStream.URLOpener opener = resolved ? resolvedURL : originalURL;
HttpURLConnection connection = opener.Connect(startPos, resolved);
resolvedURL.SetURL(GetResolvedUrl(connection));
InputStream @in = connection.GetInputStream();
IDictionary <string, IList <string> > headers = connection.GetHeaderFields();
if (IsChunkedTransferEncoding(headers))
{
// file length is not known
fileLength = null;
}
else
{
// for non-chunked transfer-encoding, get content-length
long streamlength = GetStreamLength(connection, headers);
fileLength = startPos + streamlength;
// Java has a bug with >2GB request streams. It won't bounds check
// the reads so the transfer blocks until the server times out
@in = new BoundedInputStream(@in, streamlength);
}
return(@in);
}
/// <exception cref="System.IO.IOException"/>
private ByteRangeInputStream.URLOpener GetMockURLOpener(Uri url)
{
ByteRangeInputStream.URLOpener opener = Org.Mockito.Mockito.Mock <ByteRangeInputStream.URLOpener
>(Org.Mockito.Mockito.CallsRealMethods);
opener.SetURL(url);
Org.Mockito.Mockito.DoReturn(GetMockConnection("65535")).When(opener).Connect(Matchers.AnyLong
(), Matchers.AnyBoolean());
return(opener);
}
public virtual void TestByteRange()
{
ByteRangeInputStream.URLOpener oMock = GetMockURLOpener(new Uri("http://test"));
ByteRangeInputStream.URLOpener rMock = GetMockURLOpener(null);
ByteRangeInputStream bris = new TestByteRangeInputStream.ByteRangeInputStreamImpl
(this, oMock, rMock);
bris.Seek(0);
NUnit.Framework.Assert.AreEqual("getPos wrong", 0, bris.GetPos());
bris.Read();
NUnit.Framework.Assert.AreEqual("Initial call made incorrectly (offset check)", 0
, bris.startPos);
NUnit.Framework.Assert.AreEqual("getPos should return 1 after reading one byte",
1, bris.GetPos());
Org.Mockito.Mockito.Verify(oMock, Org.Mockito.Mockito.Times(1)).Connect(0, false);
bris.Read();
NUnit.Framework.Assert.AreEqual("getPos should return 2 after reading two bytes",
2, bris.GetPos());
// No additional connections should have been made (no seek)
Org.Mockito.Mockito.Verify(oMock, Org.Mockito.Mockito.Times(1)).Connect(0, false);
rMock.SetURL(new Uri("http://resolvedurl/"));
bris.Seek(100);
bris.Read();
NUnit.Framework.Assert.AreEqual("Seek to 100 bytes made incorrectly (offset Check)"
, 100, bris.startPos);
NUnit.Framework.Assert.AreEqual("getPos should return 101 after reading one byte"
, 101, bris.GetPos());
Org.Mockito.Mockito.Verify(rMock, Org.Mockito.Mockito.Times(1)).Connect(100, true
);
bris.Seek(101);
bris.Read();
// Seek to 101 should not result in another request
Org.Mockito.Mockito.Verify(rMock, Org.Mockito.Mockito.Times(1)).Connect(100, true
);
Org.Mockito.Mockito.Verify(rMock, Org.Mockito.Mockito.Times(0)).Connect(101, true
);
bris.Seek(2500);
bris.Read();
NUnit.Framework.Assert.AreEqual("Seek to 2500 bytes made incorrectly (offset Check)"
, 2500, bris.startPos);
Org.Mockito.Mockito.DoReturn(GetMockConnection(null)).When(rMock).Connect(Matchers.AnyLong
(), Matchers.AnyBoolean());
bris.Seek(500);
try
{
bris.Read();
NUnit.Framework.Assert.Fail("Exception should be thrown when content-length is not given"
);
}
catch (IOException e)
{
NUnit.Framework.Assert.IsTrue("Incorrect response message: " + e.Message, e.Message
.StartsWith(HttpHeaders.ContentLength + " is missing: "));
}
bris.Close();
}
/// <exception cref="System.IO.IOException"/>
public ByteRangeInputStreamImpl(TestByteRangeInputStream _enclosing, ByteRangeInputStream.URLOpener
o, ByteRangeInputStream.URLOpener r)
: base(o, r)
{
this._enclosing = _enclosing;
}
