added url seed related functions to torrent_handle

docs/manual.rst

@@ -1090,8 +1090,8 @@ The input range is assumed to be valid within the torrent. ``file_offset``
 must refer to a valid file, i.e. it cannot be >= ``num_files()``.
 
 
-url_seeds()
------------
+url_seeds() add_url_seed()
+--------------------------
 
 	::
 
@@ -1266,6 +1266,8 @@ Its declaration looks like this::
 		void replace_trackers(std::vector<announce_entry> const&);
 
 		void add_url_seed(std::string const& url);
+		void remove_url_seed(std::string const& url);
+		std::set<std::string> url_seeds() const;
 
 		void set_ratio(float ratio) const;
 		void set_max_uploads(int max_uploads) const;
@@ -1601,17 +1603,22 @@ replace it. If you want an immediate effect, you have to call
 `force_reannounce()`_.
 
 
-add_url_seed()
---------------
+add_url_seed() remove_url_seed() url_seeds()
+--------------------------------------------
 
 	::
 
 		void add_url_seed(std::string const& url);
+		void remove_url_seed(std::string const& url);
+		std::set<std::string> url_seeds() const;
 
 ``add_url_seed()`` adds another url to the torrent's list of url seeds. If the
 given url already exists in that list, the call has no effect. The torrent
 will connect to the server and try to download pieces from it, unless it's
-paused, queued, checking or seeding.
+paused, queued, checking or seeding. ``remove_url_seed()`` removes the given
+url if it exists already. ``url_seeds()`` return a set of the url seeds
+currently in this torrent. Note that urls that fails may be removed
+automatically from the list.
 
 See `HTTP seeding`_ for more information.
 

include/libtorrent/torrent.hpp

@@ -249,6 +249,8 @@ namespace libtorrent
 		void remove_url_seed(std::string const& url)
 		{ m_web_seeds.erase(url); }
 
+		std::set<std::string> url_seeds() const
+		{ return m_web_seeds; }
 
 		bool free_upload_slots() const
 		{ return m_num_uploads < m_max_uploads; }

include/libtorrent/torrent_handle.hpp

@@ -34,6 +34,7 @@ POSSIBILITY OF SUCH DAMAGE.
 #define TORRENT_TORRENT_HANDLE_HPP_INCLUDED
 
 #include <vector>
+#include <set>
 
 #ifdef _MSC_VER
 #pragma warning(push, 1)
@@ -273,7 +274,9 @@ namespace libtorrent
 		std::vector<announce_entry> const& trackers() const;
 		void replace_trackers(std::vector<announce_entry> const&) const;
 
-		void add_url_seed(std::string const& url);
+		void add_url_seed(std::string const& url) const;
+		void remove_url_seed(std::string const& url) const;
+		std::set<std::string> url_seeds() const;
 
 		bool has_metadata() const;
 		const torrent_info& get_torrent_info() const;

src/torrent_handle.cpp

@@ -453,14 +453,30 @@ namespace libtorrent
 			, m_chk, m_info_hash, bind(&torrent::trackers, _1));
 	}
 
-	void torrent_handle::add_url_seed(std::string const& url)
+	void torrent_handle::add_url_seed(std::string const& url) const
 	{
 		INVARIANT_CHECK;
 
-		return call_member<void>(m_ses, m_chk, m_info_hash
+		call_member<void>(m_ses, m_chk, m_info_hash
 			, bind(&torrent::add_url_seed, _1, url));
 	}
 
+	void torrent_handle::remove_url_seed(std::string const& url) const
+	{
+		INVARIANT_CHECK;
+
+		call_member<void>(m_ses, m_chk, m_info_hash
+			, bind(&torrent::remove_url_seed, _1, url));
+	}
+
+	std::set<std::string> torrent_handle::url_seeds() const
+	{
+		INVARIANT_CHECK;
+
+		return call_member<std::set<std::string> >(m_ses, m_chk, m_info_hash
+			, bind(&torrent::url_seeds, _1));
+	}
+
 	void torrent_handle::replace_trackers(
 		std::vector<announce_entry> const& urls) const
 	{