2008-05-09 Tatsuhiro Tsujikawa <tujikawa at rednoah dot com>

	Added the ability to reuse connection in FTP and it is enabled 
by
	default. It can be disabled by --ftp-reuse-connection=false 
option.
	* src/Command.cc
	* src/DownloadCommand.cc
	* src/FtpDownloadCommand.cc
	* src/FtpDownloadCommand.h
	* src/FtpFinishDownloadCommand.cc
	* src/FtpFinishDownloadCommand.h
	* src/FtpInitiateConnectionCommand.cc
	* src/FtpNegotiationCommand.cc
	* src/FtpNegotiationCommand.h
	* src/HelpItemFactory.cc
	* src/Makefile.am
	* src/Makefile.in
	* src/OptionHandlerFactory.cc
	* src/option_processing.cc
	* src/prefs.h
	* src/usage_text.h

1 files changed, 11 insertions, 7 deletions

diff --git a/src/DownloadCommand.cc b/src/DownloadCommand.cc
index bd98519a..d2137dd6 100644
--- a/src/DownloadCommand.cc
+++ b/src/DownloadCommand.cc
@@ -178,13 +178,17 @@ bool DownloadCommand::prepareForNextSegment() {
 #endif // ENABLE_MESSAGE_DIGEST
     return true;
   } else {
-    SegmentHandle tempSegment = _segments.front();
-    SegmentHandle nextSegment =
-      _requestGroup->getSegmentMan()->getSegment(cuid,
-						 tempSegment->getIndex()+1);
-    if(!nextSegment.isNull() && nextSegment->getWrittenLength() == 0) {
-      e->commands.push_back(this);
-      return false;
+    if(_segments.size()) {
+      SegmentHandle tempSegment = _segments.front();
+      SegmentHandle nextSegment =
+	_requestGroup->getSegmentMan()->getSegment(cuid,
+						   tempSegment->getIndex()+1);
+      if(!nextSegment.isNull() && nextSegment->getWrittenLength() == 0) {
+	e->commands.push_back(this);
+	return false;
+      } else {
+	return prepareForRetry(0);
+      }
     } else {
       return prepareForRetry(0);
     }