header fix and refactor in udp_tracker_connection and typos in lazy_entry

include/libtorrent/lazy_entry.hpp

@@ -116,7 +116,7 @@ namespace libtorrent
 		// to know how many characters follow.
 		char const* ptr;
 
-		// lexicographical comparison of strings. Order is consisten
+		// lexicographical comparison of strings. Order is consistent
 		// with memcmp.
 		bool operator<(pascal_string const& rhs) const
 		{
@@ -131,7 +131,7 @@ namespace libtorrent
 	// type whose concrete type is one of:
 	//
 	// 1. dictionary (maps strings -> lazy_entry)
-	// 2. list (sequence of lazy_entry, i.e. heterogenous)
+	// 2. list (sequence of lazy_entry, i.e. heterogeneous)
 	// 3. integer
 	// 4. string
 	//

include/libtorrent/udp_tracker_connection.hpp

@@ -39,10 +39,12 @@ POSSIBILITY OF SUCH DAMAGE.
 #include <mutex>
 #include <cstdint>
 #include <memory>
+#include <map>
 
 #include "libtorrent/udp_socket.hpp"
 #include "libtorrent/tracker_manager.hpp"
 #include "libtorrent/config.hpp"
+#include "libtorrent/span.hpp"
 
 namespace libtorrent
 {

src/udp_tracker_connection.cpp

@@ -36,7 +36,6 @@ POSSIBILITY OF SUCH DAMAGE.
 
 #include "libtorrent/parse_url.hpp"
 #include "libtorrent/udp_tracker_connection.hpp"
-#include "libtorrent/io.hpp"
 #include "libtorrent/hex.hpp"
 #include "libtorrent/broadcast_socket.hpp" // for is_any
 #include "libtorrent/random.hpp"
@@ -45,15 +44,12 @@ POSSIBILITY OF SUCH DAMAGE.
 #include "libtorrent/ip_filter.hpp"
 #include "libtorrent/aux_/time.hpp"
 #include "libtorrent/aux_/io.hpp"
-#include "libtorrent/span.hpp"
 #include "libtorrent/peer.hpp"
 
 #ifndef TORRENT_DISABLE_LOGGING
 #include "libtorrent/socket_io.hpp"
 #endif
 
-using namespace std::placeholders;
-
 namespace libtorrent
 {
 
@@ -84,8 +80,7 @@ namespace libtorrent
 		int port;
 		error_code ec;
 
-		using std::ignore;
-		std::tie(protocol, ignore, hostname, port, ignore)
+		std::tie(protocol, std::ignore, hostname, port, std::ignore)
 			= parse_url_components(tracker_req().url, ec);
 		if (port == -1) port = protocol == "http" ? 80 : 443;
 
@@ -107,6 +102,7 @@ namespace libtorrent
 		}
 		else
 		{
+			using namespace std::placeholders;
 			ADD_OUTSTANDING_ASYNC("udp_tracker_connection::name_lookup");
 			// when stopping, pass in the prefer cache flag, because we
 			// don't want to get stuck on DNS lookups when shutting down
@@ -135,7 +131,7 @@ namespace libtorrent
 		, char const* msg, int interval, int min_interval)
 	{
 		// m_target failed. remove it from the endpoint list
-		std::vector<tcp::endpoint>::iterator i = std::find(m_endpoints.begin()
+		auto const i = std::find(m_endpoints.begin()
 			, m_endpoints.end(), tcp::endpoint(m_target.address(), m_target.port()));
 
 		if (i != m_endpoints.end()) m_endpoints.erase(i);
@@ -204,15 +200,13 @@ namespace libtorrent
 		// we're listening on. To make sure the tracker get our
 		// correct listening address.
 
-		for (std::vector<address>::const_iterator i = addresses.begin()
-			, end(addresses.end()); i != end; ++i)
-			m_endpoints.push_back(tcp::endpoint(*i, std::uint16_t(port)));
+		for (auto const& addr : addresses)
+			m_endpoints.push_back(tcp::endpoint(addr, std::uint16_t(port)));
 
 		if (tracker_req().filter)
 		{
 			// remove endpoints that are filtered by the IP filter
-			for (std::vector<tcp::endpoint>::iterator k = m_endpoints.begin();
-				k != m_endpoints.end();)
+			for (auto k = m_endpoints.begin(); k != m_endpoints.end();)
 			{
 				if (tracker_req().filter->access(k->address()) == ip_filter::blocked)
 				{
@@ -283,8 +277,7 @@ namespace libtorrent
 	void udp_tracker_connection::start_announce()
 	{
 		std::unique_lock<std::mutex> l(m_cache_mutex);
-		std::map<address, connection_cache_entry>::iterator cc
-			= m_connection_cache.find(m_target.address());
+		auto const cc = m_connection_cache.find(m_target.address());
 		if (cc != m_connection_cache.end())
 		{
 			// we found a cached entry! Now, we can only
@@ -467,7 +460,7 @@ namespace libtorrent
 
 		// reset transaction
 		update_transaction_id();
-		std::uint64_t const connection_id = aux::read_int64(buf);
+		std::int64_t const connection_id = aux::read_int64(buf);
 
 		std::lock_guard<std::mutex> l(m_cache_mutex);
 		connection_cache_entry& cce = m_connection_cache[m_target.address()];
@@ -554,8 +547,7 @@ namespace libtorrent
 	{
 		if (m_abort) return;
 
-		std::map<address, connection_cache_entry>::iterator i
-			= m_connection_cache.find(m_target.address());
+		auto const i = m_connection_cache.find(m_target.address());
 		// this isn't really supposed to happen
 		TORRENT_ASSERT(i != m_connection_cache.end());
 		if (i == m_connection_cache.end()) return;
@@ -632,17 +624,16 @@ namespace libtorrent
 		for (int i = 0; i < num_peers; ++i)
 		{
 			ipv4_peer_entry e;
-			memcpy(&e.ip[0], buf.data(), 4);
+			std::memcpy(e.ip.data(), buf.data(), 4);
 			buf = buf.subspan(4);
 			e.port = aux::read_uint16(buf);
 			resp.peers4.push_back(e);
 		}
 
 		std::list<address> ip_list;
-		for (std::vector<tcp::endpoint>::const_iterator i = m_endpoints.begin()
-			, end(m_endpoints.end()); i != end; ++i)
+		for (auto const& endp : m_endpoints)
 		{
-			ip_list.push_back(i->address());
+			ip_list.push_back(endp.address());
 		}
 
 		cb->tracker_response(tracker_req(), m_target.address(), ip_list
@@ -711,8 +702,7 @@ namespace libtorrent
 		tracker_request const& req = tracker_req();
 		aux::session_settings const& settings = m_man.settings();
 
-		std::map<address, connection_cache_entry>::iterator i
-			= m_connection_cache.find(m_target.address());
+		auto const i = m_connection_cache.find(m_target.address());
 		// this isn't really supposed to happen
 		TORRENT_ASSERT(i != m_connection_cache.end());
 		if (i == m_connection_cache.end()) return;
@@ -773,14 +763,12 @@ namespace libtorrent
 		if (!m_hostname.empty())
 		{
 			m_man.send_hostname(m_hostname.c_str()
-				, m_target.port(), span<char const>(buf
-					, int(sizeof(buf) - out.size())), ec
+				, m_target.port(), {buf, std::size_t(sizeof(buf) - out.size())}, ec
 				, udp_socket::tracker_connection);
 		}
 		else
 		{
-			m_man.send(m_target, span<char const>(buf
-					, int(sizeof(buf) - out.size())), ec
+			m_man.send(m_target, {buf, std::size_t(sizeof(buf) - out.size())}, ec
 				, udp_socket::tracker_connection);
 		}
 		m_state = action_t::announce;