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Implement mod communication channels (#6351)

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Implement network communication for channels

* Implement ModChannel manager server side to route incoming messages from clients to other clients
* Add signal handler switch on client & ModChannelMgr on client to handle channels
* Add Lua API bindings + client packet sending + unittests
* Implement server message sending
* Add callback from received message handler to Lua API using registration method
This commit is contained in:
Loïc Blot 2017-09-26 00:11:20 +02:00 • committed by GitHub
parent 6df312a608
commit 6f1c907204
37 changed files with 1206 additions and 39 deletions
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58
src/client.cpp
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@ -39,6 +39,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "mapblock_mesh.h"
#include "mapblock.h"
#include "minimap.h"
#include "modchannels.h"
#include "mods.h"
#include "profiler.h"
#include "shader.h"
@ -94,7 +95,8 @@ Client::Client(
m_chosen_auth_mech(AUTH_MECHANISM_NONE),
m_media_downloader(new ClientMediaDownloader()),
m_state(LC_Created),
m_game_ui_flags(game_ui_flags)
m_game_ui_flags(game_ui_flags),
m_modchannel_mgr(new ModChannelMgr())
{
// Add local player
m_env.setLocalPlayer(new LocalPlayer(this, playername));
@ -1919,3 +1921,57 @@ std::string Client::getModStoragePath() const
{
return porting::path_user + DIR_DELIM + "client" + DIR_DELIM + "mod_storage";
}
/*
* Mod channels
*/
bool Client::joinModChannel(const std::string &channel)
{
if (m_modchannel_mgr->channelRegistered(channel))
return false;
NetworkPacket pkt(TOSERVER_MODCHANNEL_JOIN, 2 + channel.size());
pkt << channel;
Send(&pkt);
m_modchannel_mgr->joinChannel(channel, 0);
return true;
}
bool Client::leaveModChannel(const std::string &channel)
{
if (!m_modchannel_mgr->channelRegistered(channel))
return false;
NetworkPacket pkt(TOSERVER_MODCHANNEL_LEAVE, 2 + channel.size());
pkt << channel;
Send(&pkt);
m_modchannel_mgr->leaveChannel(channel, 0);
return true;
}
bool Client::sendModChannelMessage(const std::string &channel, const std::string &message)
{
if (!m_modchannel_mgr->canWriteOnChannel(channel))
return false;
if (message.size() > STRING_MAX_LEN) {
warningstream << "ModChannel message too long, dropping before sending "
<< " (" << message.size() << " > " << STRING_MAX_LEN << ", channel: "
<< channel << ")" << std::endl;
return false;
}
// @TODO: do some client rate limiting
NetworkPacket pkt(TOSERVER_MODCHANNEL_MSG, 2 + channel.size() + 2 + message.size());
pkt << channel << message;
Send(&pkt);
return true;
}
ModChannel* Client::getModChannel(const std::string &channel)
{
return m_modchannel_mgr->getModChannel(channel);
}