1 | // |
---|
2 | // C++ Interface: ConnectionManager |
---|
3 | // |
---|
4 | // Description: The Class ConnectionManager manages the servers conenctions to the clients. |
---|
5 | // each connection is provided by a new process. communication between master process and |
---|
6 | // connection processes is provided by ... |
---|
7 | // |
---|
8 | // |
---|
9 | // Author: Oliver Scheuss |
---|
10 | // |
---|
11 | |
---|
12 | #include "network/ConnectionManager.h" |
---|
13 | |
---|
14 | namespace network{ |
---|
15 | |
---|
16 | boost::thread_group network_threads; |
---|
17 | |
---|
18 | void test(){ |
---|
19 | return; |
---|
20 | } |
---|
21 | |
---|
22 | ConnectionManager::ConnectionManager(){ |
---|
23 | quit=false; |
---|
24 | client=NULL; |
---|
25 | bindAddress.host = ENET_HOST_ANY; |
---|
26 | bindAddress.port = NETWORK_PORT; |
---|
27 | } |
---|
28 | |
---|
29 | ConnectionManager::ConnectionManager(int port, int address){ |
---|
30 | quit=false; |
---|
31 | client=NULL; |
---|
32 | bindAddress.host = address; |
---|
33 | bindAddress.port = NETWORK_PORT; |
---|
34 | } |
---|
35 | |
---|
36 | |
---|
37 | ENetPacket *ConnectionManager::getPacket(ENetAddress &address){ |
---|
38 | if(!buffer.isEmpty()) |
---|
39 | return buffer.pop(address); |
---|
40 | else |
---|
41 | return NULL; |
---|
42 | } |
---|
43 | |
---|
44 | bool ConnectionManager::queueEmpty(){ |
---|
45 | return buffer.isEmpty(); |
---|
46 | } |
---|
47 | |
---|
48 | void ConnectionManager::createListener(){ |
---|
49 | network_threads.create_thread(boost::bind(boost::mem_fn(&ConnectionManager::receiverThread), this)); |
---|
50 | // boost::thread thr(boost::bind(boost::mem_fn(&ConnectionManager::receiverThread), this)); |
---|
51 | return; |
---|
52 | } |
---|
53 | |
---|
54 | bool ConnectionManager::quitListener(){ |
---|
55 | quit=true; |
---|
56 | network_threads.join_all(); |
---|
57 | return true; |
---|
58 | } |
---|
59 | |
---|
60 | bool ConnectionManager::addPacket(ENetPacket *packet, ENetPeer *peer){ |
---|
61 | if(client=NULL) |
---|
62 | return false; |
---|
63 | ClientList *temp=client; |
---|
64 | while(peer->host != temp->event->peer->host){ |
---|
65 | temp=temp->next; |
---|
66 | if(temp==NULL) |
---|
67 | return false; |
---|
68 | } |
---|
69 | if(enet_peer_send(temp->event->peer, temp->ID, packet)!=0) |
---|
70 | return false; |
---|
71 | return true; |
---|
72 | } |
---|
73 | |
---|
74 | bool ConnectionManager::addPacket(ENetPacket *packet, int ID){ |
---|
75 | if(client=NULL) |
---|
76 | return false; |
---|
77 | ClientList *temp=client; |
---|
78 | while(ID != temp->ID){ |
---|
79 | temp=temp->next; |
---|
80 | if(temp==NULL) |
---|
81 | return false; |
---|
82 | } |
---|
83 | if(enet_peer_send(temp->event->peer, temp->ID, packet)!=0) |
---|
84 | return false; |
---|
85 | else |
---|
86 | return true; |
---|
87 | } |
---|
88 | |
---|
89 | bool ConnectionManager::addPacketAll(ENetPacket *packet){ |
---|
90 | ClientList *temp=client; |
---|
91 | while(temp!=NULL){ |
---|
92 | if(enet_peer_send(temp->event->peer, temp->ID, packet)!=0) |
---|
93 | return false; |
---|
94 | } |
---|
95 | return true; |
---|
96 | } |
---|
97 | |
---|
98 | bool ConnectionManager::sendPackets(ENetEvent *event){ |
---|
99 | if(server==NULL) |
---|
100 | return false; |
---|
101 | if(enet_host_service(server, event, NETWORK_SEND_WAIT)>=0) |
---|
102 | return true; |
---|
103 | else |
---|
104 | return false; |
---|
105 | } |
---|
106 | |
---|
107 | void ConnectionManager::receiverThread(){ |
---|
108 | // what about some error-handling here ? |
---|
109 | enet_initialize(); |
---|
110 | atexit(enet_deinitialize); |
---|
111 | ENetEvent event; |
---|
112 | server = enet_host_create(&bindAddress, NETWORK_MAX_CONNECTIONS, 0, 0); |
---|
113 | if(server==NULL) |
---|
114 | // add some error handling here ========================== |
---|
115 | quit=true; |
---|
116 | |
---|
117 | while(!quit){ |
---|
118 | if(enet_host_service(server, &event, NETWORK_WAIT_TIMEOUT)<0){ |
---|
119 | // we should never reach this point |
---|
120 | quit=true; |
---|
121 | // add some error handling here ======================== |
---|
122 | } |
---|
123 | switch(event.type){ |
---|
124 | // log handling ================ |
---|
125 | case ENET_EVENT_TYPE_CONNECT: |
---|
126 | addClient(&event); |
---|
127 | break; |
---|
128 | case ENET_EVENT_TYPE_RECEIVE: |
---|
129 | processData(&event); |
---|
130 | break; |
---|
131 | case ENET_EVENT_TYPE_DISCONNECT: |
---|
132 | // add some error/log handling here |
---|
133 | clientDisconnect(event.peer); |
---|
134 | break; |
---|
135 | } |
---|
136 | } |
---|
137 | // if we're finishied, destroy server |
---|
138 | enet_host_destroy(server); |
---|
139 | } |
---|
140 | |
---|
141 | bool ConnectionManager::processData(ENetEvent *event){ |
---|
142 | // just add packet to the buffer |
---|
143 | // this can be extended with some preprocessing |
---|
144 | return buffer.push(event); |
---|
145 | } |
---|
146 | |
---|
147 | bool ConnectionManager::clientDisconnect(ENetPeer *peer){ |
---|
148 | ClientList *temp=client; |
---|
149 | // do we have to remove the first item ? |
---|
150 | if(temp->event->peer->host==peer->host){ |
---|
151 | if(temp->next==NULL){ |
---|
152 | client=NULL; |
---|
153 | } else{ |
---|
154 | client=temp->next; |
---|
155 | } |
---|
156 | delete temp; |
---|
157 | return true; |
---|
158 | } else { |
---|
159 | while(temp->next!=NULL){ |
---|
160 | if(temp->next->event->peer->host==peer->host){ |
---|
161 | // do a correct relink and delete the disconnected client |
---|
162 | ClientList *temp2=temp->next; |
---|
163 | temp->next=temp2->next; |
---|
164 | delete temp2; |
---|
165 | return true; |
---|
166 | } else |
---|
167 | //otherwise keep on searching ;) |
---|
168 | temp=temp->next; |
---|
169 | } |
---|
170 | } |
---|
171 | return false; |
---|
172 | } |
---|
173 | |
---|
174 | bool ConnectionManager::addClient(ENetEvent *event){ |
---|
175 | |
---|
176 | // first client? |
---|
177 | if(client==NULL){ |
---|
178 | client =new ClientList; |
---|
179 | client->ID=1; |
---|
180 | client->next=NULL; |
---|
181 | client->event = event; |
---|
182 | } else { |
---|
183 | // otherwise add a new element to clientlist |
---|
184 | ClientList *temp = client; |
---|
185 | int i=1; |
---|
186 | while(temp->next != NULL){ |
---|
187 | temp=temp->next; |
---|
188 | i++; |
---|
189 | } |
---|
190 | temp->next=new ClientList; |
---|
191 | temp=temp->next; |
---|
192 | temp->ID=i+1; |
---|
193 | temp->event=event; |
---|
194 | temp->next=NULL; |
---|
195 | } |
---|
196 | return true; |
---|
197 | } |
---|
198 | |
---|
199 | |
---|
200 | } |
---|