2007-12-22 Tatsuhiro Tsujikawa <tujikawa at rednoah dot com>

	Added uTorrent compatible Peer Exchange.
	* src/BencodeVisitor.{h, cc}
	* test/BencodeVisitorTest.cc
	* src/BtConstants.h
	* src/BtContext.h: Added 'private' flag.
	* src/BtExtendedMessage.{h, cc}
	* test/BtExtendedMessageTest.cc
	* src/BtHandshakeMessage.{h, cc}: Set extended messaging bit in
	reserved field.
	* test/BtHandshakeMessageTest.cc
	* src/BtMessageFactory.h
	* src/BtRegistry.h
	* src/BtRuntime.h: This class holds default extension message 
IDs for
	aria2. By default, aria2 uses ID 8 for ut_pex.
	* src/DefaultBtContext.cc
	* src/DefaultBtInteractive.{h, cc}: This class holds 
_utPexEnabled.
	When it is true, aria2 enables ut_pex. This value is set by
	PeerInteractionCommand.
	* src/DefaultBtMessageFactory.{h, cc}
	* test/DefaultBtMessageFactoryTest.cc
	* src/DefaultBtMessageReceiver.cc: Moved the code of fast 
extension
	handling to DefaultBtInteractive class.
	* src/DefaultExtensionMessageFactory.{h, cc}
	* test/DefaultExtensionMessageFactoryTest.cc
	* src/DefaultPeerStorage.cc: Returns false if a peer is already 
in
	the container(peers and incomingPeers. The equality is 
determined by
	Peer::id).
	* test/DefaultPeerStorageTest.cc
	* src/ExtensionMessage.h
	* test/MockExtensionMessage.h
	* src/ExtensionMessageFactory.h
	* test/MockExtensionMessageFactory.h
	* src/HandshakeExtensionMessage.{h, cc}
	* test/HandshakeExtensionMessageTest.cc
	* src/MetaEntry.h
	* src/Peer.{h, cc}
	* src/PeerInteractionCommand.cc
	* src/PeerReceiveHandshakeCommand.cc: Evaluate the return value 
of
	addIncomingPeer.
	* src/PeerMessageUtil.{h, cc}
	* src/PeerObject.h
	* src/UTPexExtensionMessage.{h, cc}
	* test/UTPexExtensionMessageTest.cc
	* src/message.h
	* src/prefs.h

	Fixed the bug that returns incomplete data when it contains null
	character. A convenient constructor was also added.
	* src/Data.{h, cc}

	Rewritten.
	* src/CompactPeerListProcessor.cc

	Fixed typos.
	* src/message.h
	* src/MetaFileUtil.cc

1 files changed, 84 insertions, 0 deletions

diff --git a/src/BencodeVisitor.cc b/src/BencodeVisitor.cc
new file mode 100644
index 00000000..32a11308
--- /dev/null
+++ b/src/BencodeVisitor.cc
@@ -0,0 +1,84 @@
+/* <!-- copyright */
+/*
+ * aria2 - The high speed download utility
+ *
+ * Copyright (C) 2006 Tatsuhiro Tsujikawa
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * In addition, as a special exception, the copyright holders give
+ * permission to link the code of portions of this program with the
+ * OpenSSL library under certain conditions as described in each
+ * individual source file, and distribute linked combinations
+ * including the two.
+ * You must obey the GNU General Public License in all respects
+ * for all of the code used other than OpenSSL.  If you modify
+ * file(s) with this exception, you may extend this exception to your
+ * version of the file(s), but you are not obligated to do so.  If you
+ * do not wish to do so, delete this exception statement from your
+ * version.  If you delete this exception statement from all source
+ * files in the program, then also delete it here.
+ */
+/* copyright --> */
+#include "BencodeVisitor.h"
+#include "Data.h"
+#include "List.h"
+#include "Dictionary.h"
+#include "Util.h"
+
+BencodeVisitor::BencodeVisitor() {}
+
+BencodeVisitor::~BencodeVisitor() {}
+
+void BencodeVisitor::visit(const Data* d)
+{
+  if(d->isNumber()) {
+    _bencodedData += "i"+d->toString()+"e";
+  } else {
+    _bencodedData += Util::itos(d->getLen())+":"+d->toString();
+  }
+}
+
+void BencodeVisitor::visit(const List* l)
+{
+  _bencodedData += "l";
+  for_each(l->getList().begin(), l->getList().end(),
+	   bind2nd(mem_fun(&MetaEntry::accept), this));
+  _bencodedData += "e";
+}
+
+void BencodeVisitor::visit(const Dictionary* d)
+{
+  _bencodedData += "d";
+
+  for(Order::const_iterator itr = d->getOrder().begin(); itr != d->getOrder().end(); ++itr) {
+    _bencodedData += Util::itos((int32_t)(*itr).size());
+    _bencodedData += ":";
+    _bencodedData += *itr;
+    d->get(*itr)->accept(this);
+  }
+  _bencodedData += "e";
+}
+
+void BencodeVisitor::visit(const MetaEntry* e)
+{
+  if(dynamic_cast<const Data*>(e) != 0) {
+    visit((const Data*)e);
+  } else if(dynamic_cast<const List*>(e) != 0) {
+    visit((const List*)e);
+  } else if(dynamic_cast<const Dictionary*>(e) != 0) {
+    visit((const Dictionary*)e);
+  }
+}