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Allow connection info to be missing from minetest.get_player_informat…

…ion() (#9739)

fixes #9352
This reverts commit 23c907b.
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sfan5 committed May 1, 2020
1 parent 74d9b60 commit ac368af4fe27f61f5a4209cdfe90956ff745993c
Showing with 61 additions and 58 deletions.
  1. +6 −5 doc/lua_api.txt
  2. +3 −3 src/network/connection.h
  3. +52 −50 src/script/lua_api/l_server.cpp
@@ -4160,17 +4160,18 @@ Utilities
{
address = "127.0.0.1", -- IP address of client
ip_version = 4, -- IPv4 / IPv6
connection_uptime = 200, -- seconds since client connected
protocol_version = 32, -- protocol version used by client
formspec_version = 2, -- supported formspec version
lang_code = "fr" -- Language code used for translation
-- the following keys can be missing if no stats have been collected yet
min_rtt = 0.01, -- minimum round trip time
max_rtt = 0.2, -- maximum round trip time
avg_rtt = 0.02, -- average round trip time
min_jitter = 0.01, -- minimum packet time jitter
max_jitter = 0.5, -- maximum packet time jitter
avg_jitter = 0.03, -- average packet time jitter
connection_uptime = 200, -- seconds since client connected
protocol_version = 32, -- protocol version used by client
formspec_version = 2, -- supported formspec version
lang_code = "fr" -- Language code used for translation
-- following information is available on debug build only!!!
-- the following information is available in a debug build only!!!
-- DO NOT USE IN MODS
--ser_vers = 26, -- serialization version used by client
--major = 0, -- major version number
@@ -612,16 +612,16 @@ class Peer {
struct rttstats {
float jitter_min = FLT_MAX;
float jitter_max = 0.0f;
float jitter_avg = -2.0f;
float jitter_avg = -1.0f;
float min_rtt = FLT_MAX;
float max_rtt = 0.0f;
float avg_rtt = -2.0f;
float avg_rtt = -1.0f;

rttstats() = default;
};

rttstats m_rtt;
float m_last_rtt = -2.0f;
float m_last_rtt = -1.0f;

// current usage count
unsigned int m_usage = 0;
@@ -138,53 +138,54 @@ int ModApiServer::l_get_player_ip(lua_State *L)
// get_player_information(name)
int ModApiServer::l_get_player_information(lua_State *L)
{

NO_MAP_LOCK_REQUIRED;
const char * name = luaL_checkstring(L, 1);
RemotePlayer *player = dynamic_cast<ServerEnvironment *>(getEnv(L))->getPlayer(name);
if (player == NULL) {

Server *server = getServer(L);

const char *name = luaL_checkstring(L, 1);
RemotePlayer *player = server->getEnv().getPlayer(name);
if (!player) {
lua_pushnil(L); // no such player
return 1;
}

Address addr;
try
{
addr = getServer(L)->getPeerAddress(player->getPeerId());
} catch(const con::PeerNotFoundException &) {
try {
addr = server->getPeerAddress(player->getPeerId());
} catch (const con::PeerNotFoundException &) {
dstream << FUNCTION_NAME << ": peer was not found" << std::endl;
lua_pushnil(L); // error
return 1;
}

float min_rtt,max_rtt,avg_rtt,min_jitter,max_jitter,avg_jitter;
float min_rtt, max_rtt, avg_rtt, min_jitter, max_jitter, avg_jitter;
ClientState state;
u32 uptime;
u16 prot_vers;
u8 ser_vers,major,minor,patch;
std::string vers_string;
std::string lang_code;

#define ERET(code) \
if (!(code)) { \
dstream << FUNCTION_NAME << ": peer was not found" << std::endl; \
lua_pushnil(L); /* error */ \
return 1; \
u8 ser_vers, major, minor, patch;
std::string vers_string, lang_code;

auto getConInfo = [&] (con::rtt_stat_type type, float *value) -> bool {
return server->getClientConInfo(player->getPeerId(), type, value);
};

bool have_con_info =
getConInfo(con::MIN_RTT, &min_rtt) &&
getConInfo(con::MAX_RTT, &max_rtt) &&
getConInfo(con::AVG_RTT, &avg_rtt) &&
getConInfo(con::MIN_JITTER, &min_jitter) &&
getConInfo(con::MAX_JITTER, &max_jitter) &&
getConInfo(con::AVG_JITTER, &avg_jitter);

bool r = server->getClientInfo(player->getPeerId(), &state, &uptime,
&ser_vers, &prot_vers, &major, &minor, &patch, &vers_string,
&lang_code);
if (!r) {
dstream << FUNCTION_NAME << ": peer was not found" << std::endl;
lua_pushnil(L); // error
return 1;
}

ERET(getServer(L)->getClientConInfo(player->getPeerId(), con::MIN_RTT, &min_rtt))
ERET(getServer(L)->getClientConInfo(player->getPeerId(), con::MAX_RTT, &max_rtt))
ERET(getServer(L)->getClientConInfo(player->getPeerId(), con::AVG_RTT, &avg_rtt))
ERET(getServer(L)->getClientConInfo(player->getPeerId(), con::MIN_JITTER,
&min_jitter))
ERET(getServer(L)->getClientConInfo(player->getPeerId(), con::MAX_JITTER,
&max_jitter))
ERET(getServer(L)->getClientConInfo(player->getPeerId(), con::AVG_JITTER,
&avg_jitter))

ERET(getServer(L)->getClientInfo(player->getPeerId(), &state, &uptime, &ser_vers,
&prot_vers, &major, &minor, &patch, &vers_string, &lang_code))

lua_newtable(L);
int table = lua_gettop(L);

@@ -202,29 +203,31 @@ int ModApiServer::l_get_player_information(lua_State *L)
}
lua_settable(L, table);

lua_pushstring(L,"min_rtt");
lua_pushnumber(L, min_rtt);
lua_settable(L, table);
if (have_con_info) { // may be missing
lua_pushstring(L, "min_rtt");
lua_pushnumber(L, min_rtt);
lua_settable(L, table);

lua_pushstring(L,"max_rtt");
lua_pushnumber(L, max_rtt);
lua_settable(L, table);
lua_pushstring(L, "max_rtt");
lua_pushnumber(L, max_rtt);
lua_settable(L, table);

lua_pushstring(L,"avg_rtt");
lua_pushnumber(L, avg_rtt);
lua_settable(L, table);
lua_pushstring(L, "avg_rtt");
lua_pushnumber(L, avg_rtt);
lua_settable(L, table);

lua_pushstring(L,"min_jitter");
lua_pushnumber(L, min_jitter);
lua_settable(L, table);
lua_pushstring(L, "min_jitter");
lua_pushnumber(L, min_jitter);
lua_settable(L, table);

lua_pushstring(L,"max_jitter");
lua_pushnumber(L, max_jitter);
lua_settable(L, table);
lua_pushstring(L, "max_jitter");
lua_pushnumber(L, max_jitter);
lua_settable(L, table);

lua_pushstring(L,"avg_jitter");
lua_pushnumber(L, avg_jitter);
lua_settable(L, table);
lua_pushstring(L, "avg_jitter");
lua_pushnumber(L, avg_jitter);
lua_settable(L, table);
}

lua_pushstring(L,"connection_uptime");
lua_pushnumber(L, uptime);
@@ -268,7 +271,6 @@ int ModApiServer::l_get_player_information(lua_State *L)
lua_settable(L, table);
#endif

#undef ERET
return 1;
}

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