ChangeLog

@@ -1,5 +1,14 @@
 2006-02-22  Tatsuhiro Tsujikawa  <tujikawa at rednoah dot com>
 
+	* SplitSlowestSegmentSplitter.{h,cc}: This class provies algorithm
+	that splits slowest segment of SegmentMan::commands vector.
+	This is the default split algorithm of aria2.
+	* SplitFirstSegmentSplitter.{h,cc}: This class provides algorithm
+	that splits first segment of SegmentMan::commands vector.
+	* SegmentSplitter.{h,cc}: Added. This class provides split algorithm.
+	* DownloadCommand.{h,cc}: Added downloading speed calculation.
+	* Segment.h:
+	* SegmentMan.cc: Added speed field to Segment.h
 	* main.cc: -s option now affects all URLs in command-line arguemtns.
 	* HttpResponseCommand.cc: Fixed bug that segment file is not loaded.
 	* message.h: Change file size related %d to %lld.

TODO

@@ -5,5 +5,4 @@
 * Better HTTP status handling
 * Download files listed in a specifed file.
 * check MD5 checksum
-* Apply "split longest remianing time first" algorithm to SegmentMan.
+* Add the feature which adds or removes URLs on-the-fly.
-* split algorithm must be separate class.

src/DownloadCommand.cc

@@ -27,7 +27,10 @@
 #include "InitiateConnectionCommandFactory.h"
 #include "message.h"
 
-DownloadCommand::DownloadCommand(int cuid, Request* req, DownloadEngine* e, Socket* s):AbstractCommand(cuid, req, e, s) {}
+DownloadCommand::DownloadCommand(int cuid, Request* req, DownloadEngine* e, Socket* s):AbstractCommand(cuid, req, e, s), lastSize(0) {
+  sw.tv_sec = 0;
+  sw.tv_usec = 0;
+}
 
 DownloadCommand::~DownloadCommand() {}
 
@@ -50,6 +53,20 @@ bool DownloadCommand::executeInternal(Segment seg) {
     e->diskWriter->writeData(buf, bufSize, seg.sp+seg.ds);
     seg.ds += bufSize;
   }
+  // calculate downloading speed
+  struct timeval now;
+  gettimeofday(&now, NULL);
+  if(sw.tv_sec == 0 && sw.tv_usec == 0) {
+    sw = now;
+    lastSize = seg.ds;
+  } else {
+    long long int diff = Util::difftv(now, sw);
+    if(diff >= 1000000) {
+      seg.speed = (int)((seg.ds-lastSize)/(diff/1000000.0));
+      sw = now;
+      lastSize = seg.ds;
+    }
+  }
   
   if(te != NULL && te->finished()
      || te == NULL && seg.ds >= seg.ep-seg.sp+1

src/DownloadCommand.h

@@ -29,6 +29,9 @@
 using namespace std;
 
 class DownloadCommand : public AbstractCommand {
+private:
+  struct timeval sw;
+  long long int lastSize;
 protected:
   bool executeInternal(Segment segment);
 

src/FtpConnection.cc

@@ -113,7 +113,7 @@ int FtpConnection::getStatus(string response) const {
   // When the response is not like "%d %*s",
   // we return 0.
   if(response.find_first_not_of("0123456789") != 3
-     || response.find(" ") != 3) {
+     || !(response.find(" ") == 3 || response.find("-") == 3)) {
     return 0;
   }
   if(sscanf(response.c_str(), "%d %*s", &status) == 1) {

src/Makefile.am

@@ -24,6 +24,9 @@ SRCS =  Socket.cc Socket.h\
 	DownloadEngine.cc DownloadEngine.h\
 	Segment.h\
 	SegmentMan.cc SegmentMan.h\
+	SegmentSplitter.cc SegmentSplitter.h\
+	SplitFirstSegmentSplitter.cc SplitFirstSegmentSplitter.h\
+	SplitSlowestSegmentSplitter.cc SplitSlowestSegmentSplitter.h\
 	Util.cc Util.h\
 	Request.cc Request.h\
 	common.h\

src/Makefile.in

@@ -71,8 +71,11 @@ am__objects_1 = libaria2c_a-Socket.$(OBJEXT) \
 	libaria2c_a-FtpTunnelResponseCommand.$(OBJEXT) \
 	libaria2c_a-SleepCommand.$(OBJEXT) \
 	libaria2c_a-DownloadEngine.$(OBJEXT) \
-	libaria2c_a-SegmentMan.$(OBJEXT) libaria2c_a-Util.$(OBJEXT) \
+	libaria2c_a-SegmentMan.$(OBJEXT) \
-	libaria2c_a-Request.$(OBJEXT) \
+	libaria2c_a-SegmentSplitter.$(OBJEXT) \
+	libaria2c_a-SplitFirstSegmentSplitter.$(OBJEXT) \
+	libaria2c_a-SplitSlowestSegmentSplitter.$(OBJEXT) \
+	libaria2c_a-Util.$(OBJEXT) libaria2c_a-Request.$(OBJEXT) \
 	libaria2c_a-SimpleLogger.$(OBJEXT) \
 	libaria2c_a-ChunkedEncoding.$(OBJEXT) \
 	libaria2c_a-DefaultDiskWriter.$(OBJEXT) \
@@ -211,6 +214,9 @@ SRCS = Socket.cc Socket.h\
 	DownloadEngine.cc DownloadEngine.h\
 	Segment.h\
 	SegmentMan.cc SegmentMan.h\
+	SegmentSplitter.cc SegmentSplitter.h\
+	SplitFirstSegmentSplitter.cc SplitFirstSegmentSplitter.h\
+	SplitSlowestSegmentSplitter.cc SplitSlowestSegmentSplitter.h\
 	Util.cc Util.h\
 	Request.cc Request.h\
 	common.h\
@@ -337,10 +343,13 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libaria2c_a-Option.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libaria2c_a-Request.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libaria2c_a-SegmentMan.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libaria2c_a-SegmentSplitter.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libaria2c_a-SimpleLogger.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libaria2c_a-SleepCommand.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libaria2c_a-Socket.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libaria2c_a-SocketCore.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libaria2c_a-SplitFirstSegmentSplitter.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libaria2c_a-SplitSlowestSegmentSplitter.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libaria2c_a-Util.Po@am__quote@
 
 .cc.o:
@@ -665,6 +674,48 @@ libaria2c_a-SegmentMan.obj: SegmentMan.cc
 @AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libaria2c_a_CXXFLAGS) $(CXXFLAGS) -c -o libaria2c_a-SegmentMan.obj `if test -f 'SegmentMan.cc'; then $(CYGPATH_W) 'SegmentMan.cc'; else $(CYGPATH_W) '$(srcdir)/SegmentMan.cc'; fi`
 
+libaria2c_a-SegmentSplitter.o: SegmentSplitter.cc
+@am__fastdepCXX_TRUE@	if $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libaria2c_a_CXXFLAGS) $(CXXFLAGS) -MT libaria2c_a-SegmentSplitter.o -MD -MP -MF "$(DEPDIR)/libaria2c_a-SegmentSplitter.Tpo" -c -o libaria2c_a-SegmentSplitter.o `test -f 'SegmentSplitter.cc' || echo '$(srcdir)/'`SegmentSplitter.cc; \
+@am__fastdepCXX_TRUE@	then mv -f "$(DEPDIR)/libaria2c_a-SegmentSplitter.Tpo" "$(DEPDIR)/libaria2c_a-SegmentSplitter.Po"; else rm -f "$(DEPDIR)/libaria2c_a-SegmentSplitter.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='SegmentSplitter.cc' object='libaria2c_a-SegmentSplitter.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libaria2c_a_CXXFLAGS) $(CXXFLAGS) -c -o libaria2c_a-SegmentSplitter.o `test -f 'SegmentSplitter.cc' || echo '$(srcdir)/'`SegmentSplitter.cc
+
+libaria2c_a-SegmentSplitter.obj: SegmentSplitter.cc
+@am__fastdepCXX_TRUE@	if $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libaria2c_a_CXXFLAGS) $(CXXFLAGS) -MT libaria2c_a-SegmentSplitter.obj -MD -MP -MF "$(DEPDIR)/libaria2c_a-SegmentSplitter.Tpo" -c -o libaria2c_a-SegmentSplitter.obj `if test -f 'SegmentSplitter.cc'; then $(CYGPATH_W) 'SegmentSplitter.cc'; else $(CYGPATH_W) '$(srcdir)/SegmentSplitter.cc'; fi`; \
+@am__fastdepCXX_TRUE@	then mv -f "$(DEPDIR)/libaria2c_a-SegmentSplitter.Tpo" "$(DEPDIR)/libaria2c_a-SegmentSplitter.Po"; else rm -f "$(DEPDIR)/libaria2c_a-SegmentSplitter.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='SegmentSplitter.cc' object='libaria2c_a-SegmentSplitter.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libaria2c_a_CXXFLAGS) $(CXXFLAGS) -c -o libaria2c_a-SegmentSplitter.obj `if test -f 'SegmentSplitter.cc'; then $(CYGPATH_W) 'SegmentSplitter.cc'; else $(CYGPATH_W) '$(srcdir)/SegmentSplitter.cc'; fi`
+
+libaria2c_a-SplitFirstSegmentSplitter.o: SplitFirstSegmentSplitter.cc
+@am__fastdepCXX_TRUE@	if $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libaria2c_a_CXXFLAGS) $(CXXFLAGS) -MT libaria2c_a-SplitFirstSegmentSplitter.o -MD -MP -MF "$(DEPDIR)/libaria2c_a-SplitFirstSegmentSplitter.Tpo" -c -o libaria2c_a-SplitFirstSegmentSplitter.o `test -f 'SplitFirstSegmentSplitter.cc' || echo '$(srcdir)/'`SplitFirstSegmentSplitter.cc; \
+@am__fastdepCXX_TRUE@	then mv -f "$(DEPDIR)/libaria2c_a-SplitFirstSegmentSplitter.Tpo" "$(DEPDIR)/libaria2c_a-SplitFirstSegmentSplitter.Po"; else rm -f "$(DEPDIR)/libaria2c_a-SplitFirstSegmentSplitter.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='SplitFirstSegmentSplitter.cc' object='libaria2c_a-SplitFirstSegmentSplitter.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libaria2c_a_CXXFLAGS) $(CXXFLAGS) -c -o libaria2c_a-SplitFirstSegmentSplitter.o `test -f 'SplitFirstSegmentSplitter.cc' || echo '$(srcdir)/'`SplitFirstSegmentSplitter.cc
+
+libaria2c_a-SplitFirstSegmentSplitter.obj: SplitFirstSegmentSplitter.cc
+@am__fastdepCXX_TRUE@	if $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libaria2c_a_CXXFLAGS) $(CXXFLAGS) -MT libaria2c_a-SplitFirstSegmentSplitter.obj -MD -MP -MF "$(DEPDIR)/libaria2c_a-SplitFirstSegmentSplitter.Tpo" -c -o libaria2c_a-SplitFirstSegmentSplitter.obj `if test -f 'SplitFirstSegmentSplitter.cc'; then $(CYGPATH_W) 'SplitFirstSegmentSplitter.cc'; else $(CYGPATH_W) '$(srcdir)/SplitFirstSegmentSplitter.cc'; fi`; \
+@am__fastdepCXX_TRUE@	then mv -f "$(DEPDIR)/libaria2c_a-SplitFirstSegmentSplitter.Tpo" "$(DEPDIR)/libaria2c_a-SplitFirstSegmentSplitter.Po"; else rm -f "$(DEPDIR)/libaria2c_a-SplitFirstSegmentSplitter.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='SplitFirstSegmentSplitter.cc' object='libaria2c_a-SplitFirstSegmentSplitter.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libaria2c_a_CXXFLAGS) $(CXXFLAGS) -c -o libaria2c_a-SplitFirstSegmentSplitter.obj `if test -f 'SplitFirstSegmentSplitter.cc'; then $(CYGPATH_W) 'SplitFirstSegmentSplitter.cc'; else $(CYGPATH_W) '$(srcdir)/SplitFirstSegmentSplitter.cc'; fi`
+
+libaria2c_a-SplitSlowestSegmentSplitter.o: SplitSlowestSegmentSplitter.cc
+@am__fastdepCXX_TRUE@	if $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libaria2c_a_CXXFLAGS) $(CXXFLAGS) -MT libaria2c_a-SplitSlowestSegmentSplitter.o -MD -MP -MF "$(DEPDIR)/libaria2c_a-SplitSlowestSegmentSplitter.Tpo" -c -o libaria2c_a-SplitSlowestSegmentSplitter.o `test -f 'SplitSlowestSegmentSplitter.cc' || echo '$(srcdir)/'`SplitSlowestSegmentSplitter.cc; \
+@am__fastdepCXX_TRUE@	then mv -f "$(DEPDIR)/libaria2c_a-SplitSlowestSegmentSplitter.Tpo" "$(DEPDIR)/libaria2c_a-SplitSlowestSegmentSplitter.Po"; else rm -f "$(DEPDIR)/libaria2c_a-SplitSlowestSegmentSplitter.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='SplitSlowestSegmentSplitter.cc' object='libaria2c_a-SplitSlowestSegmentSplitter.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libaria2c_a_CXXFLAGS) $(CXXFLAGS) -c -o libaria2c_a-SplitSlowestSegmentSplitter.o `test -f 'SplitSlowestSegmentSplitter.cc' || echo '$(srcdir)/'`SplitSlowestSegmentSplitter.cc
+
+libaria2c_a-SplitSlowestSegmentSplitter.obj: SplitSlowestSegmentSplitter.cc
+@am__fastdepCXX_TRUE@	if $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libaria2c_a_CXXFLAGS) $(CXXFLAGS) -MT libaria2c_a-SplitSlowestSegmentSplitter.obj -MD -MP -MF "$(DEPDIR)/libaria2c_a-SplitSlowestSegmentSplitter.Tpo" -c -o libaria2c_a-SplitSlowestSegmentSplitter.obj `if test -f 'SplitSlowestSegmentSplitter.cc'; then $(CYGPATH_W) 'SplitSlowestSegmentSplitter.cc'; else $(CYGPATH_W) '$(srcdir)/SplitSlowestSegmentSplitter.cc'; fi`; \
+@am__fastdepCXX_TRUE@	then mv -f "$(DEPDIR)/libaria2c_a-SplitSlowestSegmentSplitter.Tpo" "$(DEPDIR)/libaria2c_a-SplitSlowestSegmentSplitter.Po"; else rm -f "$(DEPDIR)/libaria2c_a-SplitSlowestSegmentSplitter.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='SplitSlowestSegmentSplitter.cc' object='libaria2c_a-SplitSlowestSegmentSplitter.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libaria2c_a_CXXFLAGS) $(CXXFLAGS) -c -o libaria2c_a-SplitSlowestSegmentSplitter.obj `if test -f 'SplitSlowestSegmentSplitter.cc'; then $(CYGPATH_W) 'SplitSlowestSegmentSplitter.cc'; else $(CYGPATH_W) '$(srcdir)/SplitSlowestSegmentSplitter.cc'; fi`
+
 libaria2c_a-Util.o: Util.cc
 @am__fastdepCXX_TRUE@	if $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(libaria2c_a_CXXFLAGS) $(CXXFLAGS) -MT libaria2c_a-Util.o -MD -MP -MF "$(DEPDIR)/libaria2c_a-Util.Tpo" -c -o libaria2c_a-Util.o `test -f 'Util.cc' || echo '$(srcdir)/'`Util.cc; \
 @am__fastdepCXX_TRUE@	then mv -f "$(DEPDIR)/libaria2c_a-Util.Tpo" "$(DEPDIR)/libaria2c_a-Util.Po"; else rm -f "$(DEPDIR)/libaria2c_a-Util.Tpo"; exit 1; fi

src/Segment.h

@@ -22,6 +22,10 @@
 #ifndef _D_SEGMENT_H_
 #define _D_SEGMENT_H_
 
+#include <vector>
+
+using namespace std;
+
 /**
  * Segment represents a download segment.
  * sp, ep is a offset from a begining of a file.
@@ -36,9 +40,12 @@ typedef struct {
   long long int sp;
   long long int ep;
   long long int ds;
+  int speed;
   bool finish;
 } Segment;
 
+typedef vector<Segment> Segments;
+
 #define SEGMENT_EQUAL(X, Y) (X.cuid == Y.cuid && X.sp == Y.sp && X.ep == Y.ep && X.ds == Y.ds && X.finish == Y.finish ? true : false)
 
 #endif // _D_SEGMENT_H_

src/SegmentMan.cc

@@ -52,6 +52,7 @@ bool SegmentMan::getSegment(Segment& seg, int cuid) {
     seg.sp = 0;
     seg.ep = totalSize == 0 ? 0 : totalSize-1;
     seg.ds = 0;
+    seg.speed = 0;
     seg.finish = false;
     segments.push_back(seg);
     return true;
@@ -81,35 +82,7 @@ bool SegmentMan::getSegment(Segment& seg, int cuid) {
       return true;
     }
   }
-  for(vector<Segment>::iterator itr = segments.begin(); itr != segments.end(); itr++) {
+  return splitter->splitSegment(seg, cuid, segments);
-    Segment& s = *itr;
-    if(s.finish) {
-      continue;
-    }
-    if(s.ep-(s.sp+s.ds) > option->getAsLLInt(PREF_MIN_SEGMENT_SIZE)) {
-      long long int nep = (s.ep-(s.sp+s.ds))/2+(s.sp+s.ds);
-      //nseg = { cuid, nep+1, s.ep, 0, false };
-      seg.cuid = cuid;
-      seg.sp = nep+1;
-      seg.ep = s.ep;
-      seg.ds = 0;
-      seg.finish = false;
-      s.ep = nep;
-      logger->debug("return new segment { "
-		    "sp = "+Util::llitos(seg.sp)+", "+
-		    "ep = "+Util::llitos(seg.ep)+", "
-		    "ds = "+Util::llitos(seg.ds)+" } to "+
-		    "cuid "+Util::llitos(cuid));
-      logger->debug("update segment { "
-		    "sp = "+Util::llitos(s.sp)+", "+
-		    "ep = "+Util::llitos(s.ep)+", "
-		    "ds = "+Util::llitos(s.ds)+" } of "+
-		    "cuid "+Util::llitos(s.cuid));
-      segments.push_back(seg);
-      return true;
-    }
-  }
-  return false;
 }
 
 void SegmentMan::updateSegment(const Segment& segment) {

src/SegmentMan.h

@@ -27,6 +27,7 @@
 #include "Logger.h"
 #include "Segment.h"
 #include "Option.h"
+#include "SegmentSplitter.h"
 
 using namespace std;
 
@@ -64,7 +65,7 @@ public:
   /**
    * Holds segments.
    */
-  vector<Segment> segments;
+  Segments segments;
   /**
    * Respresents the file name of the downloaded file.
    * If the URL does not contain file name part(http://www.rednoah.com/, for 
@@ -83,6 +84,7 @@ public:
 
   const Logger* logger;
   const Option* option;
+  SegmentSplitter* splitter;
 
   SegmentMan();
   ~SegmentMan();

src/Util.h

@@ -37,7 +37,7 @@ public:
   static string llitos(long long int value, bool comma = false);
   static string itos(int value, bool comma = false);
   /**
-   * Computes difference in milli second between tv1 and tv2,
+   * Computes difference in micro-seconds between tv1 and tv2,
    * assuming tv1 is newer than tv2.
    * If tv1 is older than tv2, then this method returns 0.
    */

src/main.cc

@@ -22,6 +22,7 @@
 #include "HttpInitiateConnectionCommand.h"
 #include "DownloadEngine.h"
 #include "SegmentMan.h"
+#include "SplitSlowestSegmentSplitter.h"
 #include "SimpleLogger.h"
 #include "common.h"
 #include "DefaultDiskWriter.h"
@@ -106,7 +107,7 @@ void showUsage() {
   cout << " -l, --log=LOG                The file path to store log. If '-' is specified," << endl;
   cout << "                              log is written to stdout." << endl;
   cout << " -D, --daemon                 Run as daemon." << endl;
-  cout << " -s, --split=N                Download a file using s connections. s must be" << endl;
+  cout << " -s, --split=N                Download a file using N connections. N must be" << endl;
   cout << "                              between 1 and 5. This option affects all URLs." << endl;
   cout << "                              Thus, aria2 connects to each URL with N connections." << endl;
   cout << " --retry-wait=SEC             Set amount of time in second between requests" << endl;
@@ -138,6 +139,7 @@ void showUsage() {
   cout << " -p, --ftp-pasv               Use passive mode in FTP." << endl;
   cout << " --ftp-via-http-proxy=WAY     Use HTTP proxy in FTP. WAY is either 'get' or" << endl;
   cout << "                              'tunnel'." << endl;
+  cout << "                              Default: tunnel" << endl;
   cout << " -v, --version                Print the version number and exit." << endl;
   cout << " -h, --help                   Print this message and exit." << endl;
   cout << endl;
@@ -176,7 +178,6 @@ int main(int argc, char* argv[]) {
   op->put(PREF_FTP_USER, "anonymous");
   op->put(PREF_FTP_PASSWD, "ARIA2USER@");
   op->put(PREF_FTP_TYPE, V_BINARY);
-  op->put(PREF_FTP_PASV_ENABLED, V_TRUE);
   op->put(PREF_FTP_VIA_HTTP_PROXY, V_TUNNEL);
 
   while(1) {
@@ -393,6 +394,9 @@ int main(int argc, char* argv[]) {
   } else {
     logger = new SimpleLogger("/dev/null");
   }
+  SegmentSplitter* splitter = new SplitSlowestSegmentSplitter();
+  splitter->setMinSegmentSize(op->getAsLLInt(PREF_MIN_SEGMENT_SIZE));
+  splitter->logger = logger;
   e = new DownloadEngine();
   e->logger = logger;
   e->option = op;
@@ -402,6 +406,7 @@ int main(int argc, char* argv[]) {
   e->segmentMan->ufilename = ufilename;
   e->segmentMan->logger = logger;
   e->segmentMan->option = op;
+  e->segmentMan->splitter = splitter;
   vector<Request*> requests;
   for(int i = 1; optind+i-1 < argc; i++) {
     for(int s = 1; s <= split; s++) {