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
|
//-----------------------------------------------------------------------------
// Name: asnetwork.cpp
// Developer: Wolfire Games LLC
// Description:
// License: Read below
//-----------------------------------------------------------------------------
//
// Copyright 2022 Wolfire Games LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//-----------------------------------------------------------------------------
#include "asnetwork.h"
#include <Logging/logdata.h>
#include <SDL_net.h>
#include <algorithm>
const int ASNetwork::MAX_SOCKETS = 16;
void ASNetwork::Initialize() {
socketset = SDLNet_AllocSocketSet(MAX_SOCKETS);
socket_id_counter = 1;
}
void ASNetwork::Dispose() {
SDLNet_FreeSocketSet(socketset);
}
void ASNetwork::Update() {
if( sockets.size() > 0 ) {
int check_counter = SocketData::BUF_SIZE;
while( check_counter > 0 ) {
int nr_sockets = SDLNet_CheckSockets(socketset,0);
if( nr_sockets > 0 ) {
std::map<SocketID, SocketData>::iterator socketit = sockets.begin();
for(; socketit != sockets.end(); socketit++ ) {
SocketData &sd = socketit->second;
if( SDLNet_SocketReady( sd.socket ) && sd.used < SocketData::BUF_SIZE ) {
int recv_size = SDLNet_TCP_Recv(sd.socket, sd.buf + sd.used, 1);
if( recv_size == 1 ) {
sd.used++;
} else if( recv_size <= 0 ) {
sd.valid = false;
LOGE << "Connection Recv error on " << socketit->first << " : " << SDLNet_GetError() << std::endl;
}
}
}
check_counter--;
} else if( nr_sockets == -1 ) {
LOGE << "Error using select() on socket" << std::endl;
check_counter = 0;
} else {
check_counter = 0;
}
}
//Offset the calls to allow calls to DestroyTCPSocket.
int id_count = 0;
uint8_t* data[MAX_SOCKETS];
size_t size[MAX_SOCKETS];
SocketID id[MAX_SOCKETS];
std::map<SocketID, SocketData>::iterator socketit = sockets.begin();
for(; socketit != sockets.end(); socketit++ ) {
SocketData &sd = socketit->second;
if( sd.used > 0 ) {
data[id_count] = sd.buf;
size[id_count] = sd.used;
id[id_count] = socketit->first;
id_count++;
} else if( sd.valid == false ) { //Note that we use NULL on data as a destroy marker.
data[id_count] = NULL;
size[id_count] = 0;
id[id_count] = socketit->first;
id_count++;
}
sd.used = 0;
}
for( int i = 0; i < id_count; i++ ) {
if( data[i] == NULL ) {
DestroySocketTCP(id[i]);
} else {
std::vector<ASNetworkCallback*>::iterator cbit = callbacks.begin();
for(; cbit != callbacks.end(); cbit++ ) {
(*cbit)->IncomingTCPData(id[i], data[i], size[i] );
}
}
}
}
}
SocketID ASNetwork::CreateSocketTCP(std::string host, uint16_t port) {
if( sockets.size() < (unsigned)MAX_SOCKETS ) {
IPaddress adr;
int ret = SDLNet_ResolveHost(&adr, host.c_str(), port);
if( ret == 0 ) {
TCPsocket tcp_socket;
tcp_socket = SDLNet_TCP_Open(&adr);
if( tcp_socket ) {
SDLNet_AddSocket( socketset, (SDLNet_GenericSocket)tcp_socket );
SocketData sd;
sd.used = 0;
sd.socket = tcp_socket;
sd.valid = true;
SocketID socket_id = socket_id_counter++;
sockets[socket_id] = sd;
return socket_id;
}
else
{
LOGE << "Unable to open socket to resolved address: " << host << ":" << port << std::endl;
LOGE << "Error: " << SDLNet_GetError() << std::endl;
}
}
else
{
LOGE << "Unable to resolve host " << host << ":" << port << std::endl;
}
}
else
{
LOGE << "Unable to create another socket connection, reached max of: " << MAX_SOCKETS << std::endl;
}
return SOCKET_ID_INVALID;
}
void ASNetwork::DestroySocketTCP(SocketID sock) {
std::map<SocketID, SocketData>::iterator datait = sockets.find(sock);
if( datait != sockets.end() ) {
SDLNet_DelSocket(socketset, (SDLNet_GenericSocket)datait->second.socket);
SDLNet_TCP_Close(datait->second.socket);
sockets.erase(datait);
}
}
int ASNetwork::SocketTCPSend(SocketID socket, const uint8_t* buf, size_t len) {
std::map<SocketID, SocketData>::iterator datait = sockets.find(socket);
if( datait != sockets.end() ) {
SocketData &sd = datait->second;
int ret_data_size = SDLNet_TCP_Send( sd.socket, buf, len );
if( ret_data_size < (int)len ) {
sd.valid = false;
DestroySocketTCP(socket);
LOGE << "Error when trying to send data on socket, error: \"" << SDLNet_GetError() << "\", shutting it down." << std::endl;
}
return ret_data_size;
} else {
LOGE << "unable to send data, no such socket " << socket << std::endl;
return -1;
}
}
bool ASNetwork::IsValidSocketTCP(SocketID socket) {
std::map<SocketID, SocketData>::iterator datait = sockets.find(socket);
if( datait != sockets.end() ) {
return true;
} else {
return false;
}
}
void ASNetwork::RegisterASNetworkCallback( ASNetworkCallback* cb ) {
callbacks.push_back(cb);
}
void ASNetwork::DeRegisterASNetworkCallback( ASNetworkCallback* cb ) {
std::vector<ASNetworkCallback*>::iterator callit = std::find(callbacks.begin(), callbacks.end(),cb);
if( callit != callbacks.end() ) {
callbacks.erase(callit);
}
}
|
