2009-12-05 Tatsuhiro Tsujikawa <t-tujikawa@users.sourceforge.net>

	Added --disable-ipv6 option to disable IPv6.
	* doc/aria2c.1.txt
	* src/InitiateConnectionCommand.cc
	* src/NameResolver.cc
	* src/NameResolver.h
	* src/OptionHandlerFactory.cc
	* src/main.cc
	* src/prefs.cc
	* src/prefs.h
	* src/usage_text.h

ChangeLog

@@ -1,3 +1,16 @@
+2009-12-05  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
+
+	Added --disable-ipv6 option to disable IPv6.
+	* doc/aria2c.1.txt
+	* src/InitiateConnectionCommand.cc
+	* src/NameResolver.cc
+	* src/NameResolver.h
+	* src/OptionHandlerFactory.cc
+	* src/main.cc
+	* src/prefs.cc
+	* src/prefs.h
+	* src/usage_text.h
+
 2009-12-05  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
 
 	Updated usage text for --bt-prioritize-piece option.

doc/aria2c.1

@@ -881,6 +881,12 @@ and standard input, standard output and standard error will be redirected to
 \fIfalse\fR
 .RE
 .PP
+\fB\-\-disable\-ipv6\fR[=\fItrue\fR|\fIfalse\fR]
+.RS 4
+Disable IPv6\&. This is useful if you have to use broken DNS and want to avoid terribly slow AAAA record lookup\&. Default:
+\fIfalse\fR
+.RE
+.PP
 \fB\-\-enable\-direct\-io\fR[=\fItrue\fR|\fIfalse\fR]
 .RS 4
 Enable directI/O, which lowers cpu usage while allocating/checking files\&. Turn off if you encounter any error\&. Default:
@@ -937,7 +943,7 @@ Bind sockets to given interface\&. You can specify interface name, IP address an
 .ps -1
 .br
 .sp
-If an interface has multiple addresses, it is highly recommended to specify IP address explicitly\&.
+If an interface has multiple addresses, it is highly recommended to specify IP address explicitly\&. See also \fB\-\-disable\-ipv6\fR\&.
 .sp .5v
 .RE
 .PP

doc/aria2c.1.html

@@ -1685,6 +1685,15 @@ writes the piece to the appropriate files.</td>
 </p>
 </dd>
 <dt class="hdlist1">
+<strong>--disable-ipv6</strong>[=<em>true</em>|<em>false</em>]
+</dt>
+<dd>
+<p>
+  Disable IPv6. This is useful if you have to use broken DNS and want
+  to avoid terribly slow AAAA record lookup. Default: <em>false</em>
+</p>
+</dd>
+<dt class="hdlist1">
 <strong>--enable-direct-io</strong>[=<em>true</em>|<em>false</em>]
 </dt>
 <dd>
@@ -1744,7 +1753,7 @@ writes the piece to the appropriate files.</td>
 <div class="title">Note</div>
 </td>
 <td class="content">If an interface has multiple addresses, it is highly recommended to specify
-IP address explicitly.</td>
+IP address explicitly. See also <strong>--disable-ipv6</strong>.</td>
 </tr></table>
 </div>
 <div class="dlist"><dl>
@@ -3448,7 +3457,7 @@ files in the program, then also delete it here.</p></div>
 <div id="footnotes"><hr /></div>
 <div id="footer">
 <div id="footer-text">
-Last updated 2009-12-05 15:42:10 JST
+Last updated 2009-12-05 16:08:32 JST
 </div>
 </div>
 </body>

doc/aria2c.1.txt

@@ -608,6 +608,11 @@ Advanced Options
   and standard input, standard output and standard error will be
   redirected to '/dev/null'. Default: 'false'
 
+*--disable-ipv6*[='true'|'false']::
+
+  Disable IPv6. This is useful if you have to use broken DNS and want
+  to avoid terribly slow AAAA record lookup. Default: 'false'
+
 *--enable-direct-io*[='true'|'false']::
   Enable directI/O, which lowers cpu usage while allocating/checking files.
   Turn off if you encounter any error.
@@ -645,7 +650,7 @@ Advanced Options
 
 [NOTE]
 If an interface has multiple addresses, it is highly recommended to specify
-IP address explicitly.
+IP address explicitly. See also *--disable-ipv6*.
 
 *--log-level*=LEVEL::
   Set log level to output.

src/InitiateConnectionCommand.cc

@@ -98,6 +98,9 @@ bool InitiateConnectionCommand::executeInternal() {
       {
 	NameResolver res;
 	res.setSocktype(SOCK_STREAM);
+	if(e->option->getAsBool(PREF_DISABLE_IPV6)) {
+	  res.setFamily(AF_INET);
+	}
 	res.resolve(addrs, hostname);
       }
     logger->info(MSG_NAME_RESOLUTION_COMPLETE, cuid,

src/NameResolver.cc

@@ -33,15 +33,17 @@
  */
 /* copyright --> */
 #include "NameResolver.h"
+
+#include <cstring>
+
 #include "DlAbortEx.h"
 #include "message.h"
 #include "StringFormat.h"
 #include "util.h"
-#include <cstring>
 
 namespace aria2 {
 
-NameResolver::NameResolver():_socktype(0) {}
+NameResolver::NameResolver():_socktype(0), _family(AF_UNSPEC) {}
 
 void NameResolver::resolve(std::deque<std::string>& resolvedAddresses,
 			   const std::string& hostname)
@@ -49,7 +51,7 @@ void NameResolver::resolve(std::deque<std::string>& resolvedAddresses,
   struct addrinfo hints;
   struct addrinfo* res;
   memset(&hints, 0, sizeof(hints));
-  hints.ai_family = AF_UNSPEC;
+  hints.ai_family = _family;
   hints.ai_socktype = _socktype;
   hints.ai_flags = 0;
   hints.ai_protocol = 0;

src/NameResolver.h

@@ -44,6 +44,7 @@ namespace aria2 {
 class NameResolver {
 private:
   int _socktype;
+  int _family;
 public:
   NameResolver();
 
@@ -55,6 +56,12 @@ public:
 
   // specify SOCK_STREAM or SOCK_DGRAM
   void setSocktype(int socktype);
+
+  // specify protocol family
+  void setFamily(int family)
+  {
+    _family = family;
+  }
 };
 
 } // namespace aria2

src/OptionHandlerFactory.cc

@@ -153,6 +153,15 @@ OptionHandlers OptionHandlerFactory::createOptionHandlers()
     op->addTag(TAG_FILE);
     handlers.push_back(op);
   }
+  {
+    SharedHandle<OptionHandler> op(new BooleanOptionHandler
+				   (PREF_DISABLE_IPV6,
+				    TEXT_DISABLE_IPV6,
+				    V_FALSE,
+				    OptionHandler::OPT_ARG));
+    op->addTag(TAG_ADVANCED);
+    handlers.push_back(op);
+  }
   {
     SharedHandle<NumberOptionHandler> op(new NumberOptionHandler
 					 (PREF_DNS_TIMEOUT,

src/main.cc

@@ -208,6 +208,9 @@ downloadresultcode::RESULT main(int argc, char* argv[])
     MessageDigestHelper::staticSHA1DigestInit();
 #endif // ENABLE_MESSAGE_DIGEST
 
+    if(op->getAsBool(PREF_DISABLE_IPV6)) {
+      SocketCore::setProtocolFamily(AF_INET);
+    }
     // Bind interface
     if(!op->get(PREF_INTERFACE).empty()) {
       std::string interface = op->get(PREF_INTERFACE);

src/prefs.cc

@@ -174,6 +174,8 @@ const std::string PREF_ON_DOWNLOAD_ERROR("on-download-error");
 const std::string PREF_XML_RPC_LISTEN_ALL("xml-rpc-listen-all");
 // value: string
 const std::string PREF_INTERFACE("interface");
+// value: true | false
+const std::string PREF_DISABLE_IPV6("disable-ipv6");
 
 /**
  * FTP related preferences

src/prefs.h

@@ -178,6 +178,8 @@ extern const std::string PREF_ON_DOWNLOAD_ERROR;
 extern const std::string PREF_XML_RPC_LISTEN_ALL;
 // value: string
 extern const std::string PREF_INTERFACE;
+// value: true | false
+extern const std::string PREF_DISABLE_IPV6;
 
 /**
  * FTP related preferences

src/usage_text.h

@@ -579,3 +579,5 @@ _(" --bt-prioritize-piece=head[=SIZE],tail[=SIZE] Try to download first and last
 #define TEXT_INTERFACE \
 _(" --interface=INTERFACE        Bind sockets to given interface. You can specify\n"\
   "                              interface name, IP address and hostname.")
+#define TEXT_DISABLE_IPV6 \
+_(" --disable-ipv6[=true|false]  Disable IPv6.")