From da668763a682e97b897f75af22b35e269f63261a Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Mon, 19 Jul 2010 05:37:40 +0000
Subject: [PATCH] 2010-07-19  Tatsuhiro Tsujikawa 
 <t-tujikawa@users.sourceforge.net>

	Added hidden select-least-used-host option.
	* src/CreateRequestCommand.cc
	* src/OptionHandlerFactory.cc
	* src/TrackerWatcherCommand.cc
	* src/prefs.cc
	* src/prefs.h
---
 ChangeLog                    | 9 +++++++++
 src/CreateRequestCommand.cc  | 4 +++-
 src/OptionHandlerFactory.cc  | 8 ++++++++
 src/TrackerWatcherCommand.cc | 1 +
 src/prefs.cc                 | 2 ++
 src/prefs.h                  | 2 ++
 6 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 049ca50d..88577643 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2010-07-19  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
+
+	Added hidden select-least-used-host option.
+	* src/CreateRequestCommand.cc
+	* src/OptionHandlerFactory.cc
+	* src/TrackerWatcherCommand.cc
+	* src/prefs.cc
+	* src/prefs.h
+
 2010-07-19  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
 
 	Updated doc for --split option.
diff --git a/src/CreateRequestCommand.cc b/src/CreateRequestCommand.cc
index c7373fc7..2a8dfad0 100644
--- a/src/CreateRequestCommand.cc
+++ b/src/CreateRequestCommand.cc
@@ -72,7 +72,9 @@ bool CreateRequestCommand::executeInternal()
                  (getSegments().front()->getPositionToWrite()));
   }
   std::vector<std::pair<size_t, std::string> > usedHosts;
-  getDownloadEngine()->getRequestGroupMan()->getUsedHosts(usedHosts);
+  if(getOption()->getAsBool(PREF_SELECT_LEAST_USED_HOST)) {
+    getDownloadEngine()->getRequestGroupMan()->getUsedHosts(usedHosts);
+  }
   setRequest
     (getFileEntry()->getRequest(getRequestGroup()->getURISelector(),
                                 getOption()->getAsBool(PREF_REUSE_URI),
diff --git a/src/OptionHandlerFactory.cc b/src/OptionHandlerFactory.cc
index d7c228d6..a1df7357 100644
--- a/src/OptionHandlerFactory.cc
+++ b/src/OptionHandlerFactory.cc
@@ -504,6 +504,14 @@ OptionHandlers OptionHandlerFactory::createOptionHandlers()
     op->addTag(TAG_ADVANCED);
     handlers.push_back(op);
   }
+  {
+    SharedHandle<OptionHandler> op(new BooleanOptionHandler
+                                   (PREF_SELECT_LEAST_USED_HOST,
+                                    NO_DEFAULT_VALUE,
+                                    V_TRUE));
+    op->hide();
+    handlers.push_back(op);
+  }
   {
     SharedHandle<OptionHandler> op(new NumberOptionHandler
                                    (PREF_STOP,
diff --git a/src/TrackerWatcherCommand.cc b/src/TrackerWatcherCommand.cc
index f2a1faaf..fe741501 100644
--- a/src/TrackerWatcherCommand.cc
+++ b/src/TrackerWatcherCommand.cc
@@ -242,6 +242,7 @@ TrackerWatcherCommand::createRequestGroup(const std::string& uri)
   rg->getOption()->put(PREF_CONNECT_TIMEOUT,
                        rg->getOption()->get(PREF_BT_TRACKER_CONNECT_TIMEOUT));
   rg->getOption()->put(PREF_REUSE_URI, V_FALSE);
+  rg->getOption()->put(PREF_SELECT_LEAST_USED_HOST, V_FALSE);
   static const std::string TRACKER_ANNOUNCE_FILE("[tracker.announce]");
   SharedHandle<DownloadContext> dctx
     (new DownloadContext(getOption()->getAsInt(PREF_SEGMENT_SIZE),
diff --git a/src/prefs.cc b/src/prefs.cc
index eee818e2..61bcc5cb 100644
--- a/src/prefs.cc
+++ b/src/prefs.cc
@@ -196,6 +196,8 @@ const std::string PREF_MAX_CONNECTION_PER_SERVER("max-connection-per-server");
 const std::string PREF_MIN_SPLIT_SIZE("min-split-size");
 // value: true | false
 const std::string PREF_CONDITIONAL_GET("conditional-get");
+// value: true | false
+const std::string PREF_SELECT_LEAST_USED_HOST("select-least-used-host");
 
 /**
  * FTP related preferences
diff --git a/src/prefs.h b/src/prefs.h
index 5beb93f7..7ba05f19 100644
--- a/src/prefs.h
+++ b/src/prefs.h
@@ -200,6 +200,8 @@ extern const std::string PREF_MAX_CONNECTION_PER_SERVER;
 extern const std::string PREF_MIN_SPLIT_SIZE;
 // value: true | false
 extern const std::string PREF_CONDITIONAL_GET;
+// value: true | false
+extern const std::string PREF_SELECT_LEAST_USED_HOST;
 
 /**
  * FTP related preferences