Send long announce as POST, show OS in useragent

Add lag reporting to masterserver (average dtime)
StyledWriter  -> FastWriter in masterserver announce

src/convert_json.cpp

@@ -37,8 +37,6 @@ Json::Value                 fetchJsonValue(const std::string url,
 	HTTPFetchRequest fetchrequest;
 	HTTPFetchResult fetchresult;
 	fetchrequest.url = url;
-	fetchrequest.useragent = std::string("Minetest ")+minetest_version_hash;
-	fetchrequest.timeout = g_settings->getS32("curl_timeout");
 	fetchrequest.caller = HTTPFETCH_SYNC;
 
 	struct curl_slist* runptr = chunk;

src/guiEngine.cpp

@@ -518,8 +518,6 @@ bool GUIEngine::downloadFile(std::string url,std::string target) {
 		HTTPFetchRequest fetchrequest;
 		HTTPFetchResult fetchresult;
 		fetchrequest.url = url;
-		fetchrequest.useragent = std::string("Minetest ")+minetest_version_hash;
-		fetchrequest.timeout = g_settings->getS32("curl_timeout");
 		fetchrequest.caller = HTTPFETCH_SYNC;
 		httpfetch_sync(fetchrequest,fetchresult);
 

src/httpfetch.cpp

@@ -25,6 +25,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include <list>
 #include <map>
 #include <errno.h>
+#ifndef _MSC_VER
+#include <sys/utsname.h>
+#endif
 #include "jthread/jevent.h"
 #include "config.h"
 #include "exceptions.h"
@@ -32,10 +35,32 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "log.h"
 #include "util/container.h"
 #include "util/thread.h"
+#include "version.h"
+#include "main.h"
+#include "settings.h"
 
 JMutex g_httpfetch_mutex;
 std::map<unsigned long, std::list<HTTPFetchResult> > g_httpfetch_results;
 
+	HTTPFetchRequest::HTTPFetchRequest()
+	{
+		url = "";
+		caller = HTTPFETCH_DISCARD;
+		request_id = 0;
+		timeout = g_settings->getS32("curl_timeout");
+		connect_timeout = timeout * 5;
+		
+		useragent = std::string("Minetest ") + minetest_version_hash;
+#ifdef _MSC_VER
+		useragent += "Windows";
+#else
+		struct utsname osinfo;
+		uname(&osinfo);
+		useragent += std::string(" (") + osinfo.sysname + "; " + osinfo.release + "; " + osinfo.machine + ")";
+#endif
+	}
+
+
 static void httpfetch_deliver_result(const HTTPFetchResult &fetchresult)
 {
 	unsigned long caller = fetchresult.caller;

src/httpfetch.h

@@ -58,14 +58,7 @@ struct HTTPFetchRequest
 	//useragent to use
 	std::string useragent;
 
-	HTTPFetchRequest()
-	{
-		url = "";
-		caller = HTTPFETCH_DISCARD;
-		request_id = 0;
-		timeout = 0;
-		connect_timeout = 0;
-	}
+	HTTPFetchRequest();
 };
 
 struct HTTPFetchResult

src/server.cpp

@@ -675,6 +675,7 @@ Server::Server(
 	m_savemap_timer = 0.0;
 
 	m_step_dtime = 0.0;
+	m_lag = g_settings->getFloat("dedicated_server_step");
 
 	if(path_world == "")
 		throw ServerError("Supplied empty world path");
@@ -1260,13 +1261,14 @@ void Server::AsyncRunStep()
 	}
 
 
+	m_lag += (m_lag > dtime ? -1 : 1) * dtime/100;
 #if USE_CURL
 	// send masterserver announce
 	{
 		float &counter = m_masterserver_timer;
 		if(!isSingleplayer() && (!counter || counter >= 300.0) && g_settings->getBool("server_announce") == true)
 		{
-			ServerList::sendAnnounce(!counter ? "start" : "update", m_clients_names, m_uptime.get(), m_env->getGameTime(), m_gamespec.id, m_mods);
+			ServerList::sendAnnounce(!counter ? "start" : "update", m_clients_names, m_uptime.get(), m_env->getGameTime(), m_lag, m_gamespec.id, m_mods);
 			counter = 0.01;
 		}
 		counter += dtime;

src/server.h

@@ -701,6 +701,8 @@ private:
 	float m_step_dtime;
 	JMutex m_step_dtime_mutex;
 
+	float m_lag;
+
 	// The server mainly operates in this thread
 	ServerThread *m_thread;
 

src/serverlist.cpp

@@ -188,7 +188,7 @@ std::string serializeJson(std::vector<ServerListSpec> serverlist)
 
 
 #if USE_CURL
-void sendAnnounce(std::string action, const std::vector<std::string> & clients_names, double uptime, u32 game_time, std::string gameid, std::vector<ModSpec> mods) {
+void sendAnnounce(std::string action, const std::vector<std::string> & clients_names, double uptime, u32 game_time, float lag, std::string gameid, std::vector<ModSpec> mods) {
 	Json::Value server;
 	if (action.size())
 		server["action"]	= action;
@@ -226,16 +226,19 @@ void sendAnnounce(std::string action, const std::vector<std::string> & clients_n
 			server["mods"].append(m->name);
 		}
 		actionstream << "announcing to " << g_settings->get("serverlist_url") << std::endl;
+	} else {
+		if (lag)
+			server["step"]	= lag;
 	}
 
-	Json::StyledWriter writer;
+	Json::FastWriter writer;
 	HTTPFetchRequest fetchrequest;
-	fetchrequest.url = g_settings->get("serverlist_url")
-		+ std::string("/announce?json=")
-		+ urlencode(writer.write(server));
-	fetchrequest.useragent = std::string("Minetest ")+minetest_version_hash;
-	fetchrequest.caller = HTTPFETCH_DISCARD;
-	fetchrequest.timeout = g_settings->getS32("curl_timeout");
+	fetchrequest.url = g_settings->get("serverlist_url") + std::string("/announce");
+	std::string query = std::string("json=") + urlencode(writer.write(server));
+	if (query.size() < 1000)
+		fetchrequest.url += "?" + query;
+	else
+		fetchrequest.post_fields = query;
 	httpfetch_async(fetchrequest);
 }
 #endif

src/serverlist.h

@@ -41,7 +41,7 @@ namespace ServerList
 	std::string serializeJson(std::vector<ServerListSpec>);
 	#if USE_CURL
 	void sendAnnounce(std::string action = "", const std::vector<std::string> & clients_names = std::vector<std::string>(), 
-				double uptime = 0, u32 game_time = 0,std::string gameid = "", 
+				double uptime = 0, u32 game_time = 0, float lag = 0, std::string gameid = "", 
 				std::vector<ModSpec> mods = std::vector<ModSpec>());
 	#endif
 } //ServerList namespace

util/master/servers.jst

@@ -13,7 +13,7 @@
 		{{? !master.no_description}}<th>Description</th>{{?}}
 		{{? !master.no_flags}}<th>Flags</th>{{?}}
 		{{? !master.no_uptime}}<th>Uptime, Age</th>{{?}}
-		{{? !master.no_ping}}<th>Ping</th>{{?}}
+		{{? !master.no_ping}}<th>Ping, Lag</th>{{?}}
 	</tr>
 	{{~it.list :server:index}}
 	{{ if (master.limit && index + 1 > master.limit) break;}}
@@ -64,7 +64,7 @@
 		</td>{{?}}
 		{{? !master.no_ping}}
 		<td class="ping">
-			{{=Math.floor(server.ping * 1000)}}
+			{{=Math.floor(server.ping * 1000)}}{{? server.lag}}, {{= Math.floor(server.lag * 1000)}}{{?}}
 		</td>{{?}}
 	</tr>
 	{{~}}