summaryrefslogtreecommitdiffstats
path: root/libksirtet/lib/internal.cpp
blob: f8b34085a3b356507277f810129ca0a0c8066239 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
#include "internal.h"
#include "internal.moc"

#include <tqptrlist.h>
#include <klocale.h>
#include "mp_interface.h"

#define DATA_ERROR(i)  { dataError(i);  return; }
#define READ_ERROR(i)  { readError(i);  return; }
#define WRITE_ERROR(i) { writeError(i); return; }
#define BROKE_ERROR(i) { brokeError(i); return; }
#define LAG_ERROR      { lagError();    return; }


//-----------------------------------------------------------------------------
void Local::dataError(uint i)
{
	qWarning("MP : Invalid data from board #%i", i);
}

void Local::readData(bool inverse)
{
	// read data from local boards
	for (uint i=0; i<ios.size(); i++) {
		boards[i].ptr->dataOut(ios[i]->writing);
		if (inverse) ios[i]->writingToReading();
	}
}

void Local::writeData(bool inverse)
{
	// write data to local boards
	for (uint i=0; i<ios.size(); i++) {
		if (inverse) ios[i]->writingToReading();
		boards[i].ptr->dataIn(ios[i]->reading);
		if ( !ios[i]->reading.readOk() ) DATA_ERROR(i);
	}
}

void Local::treatData()
{
	readData(TRUE);
	interface->treatData();
	// check reading stream
	for (uint i=0; i<ios.size(); i++)
		if ( !ios[i]->reading.readOk() ) DATA_ERROR(i);
	writeData(TRUE);
}

//-----------------------------------------------------------------------------
Server::Server(uint _interval)
: interval(_interval)
{
	timer.start(interval);
}

void Server::congestion()
{
	qWarning("MP : congestion occurred !!");
}

void Server::serverTimeout()
{
	ctimer.start(2*interval, TRUE);
	timeout();
}

//-----------------------------------------------------------------------------
Network::Network(MPInterface *_interface,
				 TQValueList<MPInterface::Data> &_boards,
				 const TQPtrList<RemoteHostData> &rhd)
: Local(_interface, _boards)
{
	RemoteData rd;
	TQPtrListIterator<RemoteHostData> it(rhd);
	for (; it.current(); ++it) {
        rd.socket = it.current()->socket;
		rd.socket->notifier()->setEnabled(TRUE);
		connect(rd.socket->notifier(), TQT_SIGNAL(activated(int)),
                TQT_SLOT(notifier(int)));
		uint nb = it.current()->bds.count();
		Q_ASSERT( nb>=1 );
		rd.array  = new BufferArray(nb);
		for (uint k=0; k<it.current()->bds.count(); k++)
			rd.names += it.current()->bds[k].name;
		remotes += rd;
	}
}

Network::~Network()
{
	for (uint i=0; i<remotes.count(); i++) {
		delete remotes[i].socket;
		delete remotes[i].array;
	}
}

uint Network::nbPlayers() const
{
	uint nb = Local::nbPlayers();
	for (uint i=0; i<remotes.count(); i++) nb += remotes[i].array->size();
	return nb;
}

TQString Network::playerName(uint i) const
{
	uint l = Local::nbPlayers();
	if ( i<l ) return Local::playerName(i);
	for (uint k=0; k<remotes.count(); k++) {
		uint ll = remotes[k].array->size();
		if ( i<(l+ll) ) return remotes[k].names[i-l];
		l += ll;
	}
	return TQString::null; // dummy
}

IOBuffer *Network::ioBuffer(uint i) const
{
	if ( i<Local::nbPlayers() ) return Local::ioBuffer(i);
	i -= Local::nbPlayers();
	for (uint k=0; k<remotes.count(); k++) {
		if ( i<remotes[k].array->size() ) return (*remotes[k].array)[i];
		i -= remotes[k].array->size();
	}
	Q_ASSERT(FALSE);
	return 0;
}

void Network::readError(uint i)
{
	disconnectHost(i, i18n("Unable to read socket"));
}

void Network::writeError(uint i)
{
	disconnectHost(i, i18n("Unable to write to socket"));
}

void Network::brokeError(uint i)
{
	disconnectHost(i, i18n("Link broken"));
}

void Network::disconnectHost(uint i, const TQString &msg)
{
	delete remotes[i].socket;
	delete remotes[i].array;
	remotes.remove(remotes.at(i));
	interface->hostDisconnected(i, msg);
}

//-----------------------------------------------------------------------------
LocalServer::LocalServer(MPInterface *_interface,
						 TQValueList<MPInterface::Data> &_boards,
						 uint _interval)
: Local(_interface, _boards), Server(_interval)
{
	connect(&timer, TQT_SIGNAL(timeout()), TQT_SLOT(timeoutSlot()));
	connect(&ctimer, TQT_SIGNAL(timeout()), TQT_SLOT(congestionTimeoutSlot()));
	serverTimeout();
}

//-----------------------------------------------------------------------------
NetworkServer::NetworkServer(MPInterface *_interface,
							 TQValueList<MPInterface::Data> &_boards,
							 const TQPtrList<RemoteHostData> &rhd, uint _interval)
: Network(_interface, _boards, rhd), Server(_interval),
  nbReceived(remotes.count())
{
	connect(&timer, TQT_SIGNAL(timeout()), TQT_SLOT(timeoutSlot()));
	connect(&ctimer, TQT_SIGNAL(timeout()), TQT_SLOT(congestionTimeoutSlot()));
	// to catch unexpected data
	for (uint i=0; i<remotes.count(); i++) remotes[i].received = TRUE;
	nbReceived = remotes.count();
//  let the client the time to create itself ...
//	serverTimeout();
}

void NetworkServer::timeout()
{
	if ( nbReceived<remotes.count() ) LAG_ERROR;
	nbReceived = 0;
	for (uint i=0; i<remotes.count(); i++) remotes[i].received = FALSE;
	// send MF_ASK : asking for data from clients
	for (uint i=0; i<remotes.count(); i++) {
		remotes[i].socket->writingStream() << MF_Ask;
//		debug("SERVER : send ask flag");
		if ( !remotes[i].socket->write() ) WRITE_ERROR(i);
	}
}

void NetworkServer::notifier(int fd)
{
	uint i;
	for (i=0; i<remotes.count(); i++)
		if ( remotes[i].socket->fd()==fd ) break;
	Q_ASSERT( i<remotes.count() );

	if ( remotes[i].received ) READ_ERROR(i);
	switch ( remotes[i].socket->read() ) {
	 case -1: READ_ERROR(i);
	 case  0: BROKE_ERROR(i);
	}

	remotes[i].received = TRUE;
	nbReceived++;

	ReadingStream &s = remotes[i].socket->readingStream();
//	debug("SERVER : notifier + read (fd=%i i=%i size=%i)", fd, i,
//		  s.size());
	s >> *remotes[i].array;
	if ( !s.readOk() ) DATA_ERROR(i);

	// all data from clients received
	if ( nbReceived==remotes.count() ) treatData();
}

void NetworkServer::writeData(bool inverse)
{
	Local::writeData(inverse);
	for (uint i=0; i<remotes.count(); i++) {
		WritingStream &s = remotes[i].socket->writingStream();
		s << MF_Data;
		s << *remotes[i].array;
		s.writeRawBytes(globalStream()->buffer().data(),
						globalStream()->size());
//		debug("SERVER : write data (size= 1 + %i + %i=%i)",
//			  globalStream()->size(), s.size()-globalStream()->size()-1,
//			  s.size());
		if ( !remotes[i].socket->write() ) WRITE_ERROR(i);
	}
	globalStream()->clear();
}

void NetworkServer::lagError()
{
	for (uint i=0; i<remotes.count(); i++)
		if ( !remotes[i].received )
            disconnectHost(i, i18n("Client has not answered in time"));
}

//-----------------------------------------------------------------------------
void Client::notifier(int)
{
	switch ( remotes[0].socket->read() ) {
	 case -1: READ_ERROR(0);
	 case  0: BROKE_ERROR(0);
	}
	ReadingStream &s = remotes[0].socket->readingStream();
	MetaFlag mf;
	s >> mf;
	if ( !s.readOk() ) DATA_ERROR(0);
//	debug("CLIENT : reading stream (size=%i flag=%i)", s.size(),
//		  (int)mf);
	switch(mf) {
	 case MF_Ask:
		// write data from local boards to server socket (cleaning
		// of writing stream is done in write())
		readData(FALSE);
		remotes[0].socket->writingStream() << ios;
//		debug("CLIENT : send ios (size=%i)",
//			  remotes[0].socket->writingStream().size());
		if ( !remotes[0].socket->write() ) WRITE_ERROR(0);
		break;
	 case MF_Data:
		// read data from server to interface & local boards
//		debug("CLIENT : before receive ios (at=%i)", s.device()->at());
		s >> ios;
//		debug("CLIENT : after receive ios (at=%i)", s.device()->at());
		interface->dataFromServer(s);
//		debug("CLIENT : after dataFromServer (at=%i)", s.device()->at());
		if ( !s.readOk() ) DATA_ERROR(0);
		writeData(FALSE);
		break;
	 default: DATA_ERROR(0);
	}
	if ( !s.atEnd() ) qWarning("CLIENT : remaining data");
}