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
|
/*
$Id: browse_client_generic.cpp,v 1.6 2001/10/14 18:05:07 japj Exp $
------------------------------------------------------------------------
ClanLib, the platform independent game SDK.
This library is distributed under the GNU LIBRARY GENERAL PUBLIC LICENSE
version 2. See COPYING for details.
For a total list of contributers see CREDITS.
------------------------------------------------------------------------
*/
#ifdef WIN32
#pragma warning (disable:4786)
#pragma warning (disable:4355)
#include <winsock2.h> // needed for ntohl and ntohs
#else
#include <netinet/in.h>
#endif
#include "browse_client_generic.h"
#include "API/Core/System/error.h"
#include "API/Core/System/event_trigger.h"
#include "API/Core/IOData/outputsource_memory.h"
/////////////////////////////////////////////////////////////////////////////
// CL_BrowseClient_Generic construction:
CL_BrowseClient_Generic::CL_BrowseClient_Generic(
const CL_IPAddress &browse_master,
const std::string &app_id)
:
browse_master(browse_master),
app_id(app_id),
sock(CL_Socket::tcp),
thread(this),
stop_thread(false)
{
thread.start();
}
CL_BrowseClient_Generic::~CL_BrowseClient_Generic()
{
// shut down worker thread.
stop_thread = true;
thread.wait();
}
/////////////////////////////////////////////////////////////////////////////
// CL_BrowseClient_Generic attributes:
/////////////////////////////////////////////////////////////////////////////
// CL_BrowseClient_Generic operations:
/////////////////////////////////////////////////////////////////////////////
// CL_BrowseClient_Generic implementation:
void CL_BrowseClient_Generic::keep_alive()
{
CL_MutexSection mutex_lock(&mutex);
std::list< std::pair<CL_IPAddress, std::string> >::iterator it;
std::list<CL_IPAddress>::iterator it2;
for (it = added_list.begin(); it != added_list.end(); it++)
{
sig_server_added(it->first, it->second);
}
for (it = updated_list.begin(); it != updated_list.end(); it++)
{
sig_server_updated(it->first, it->second);
}
for (it2 = removed_list.begin(); it2 != removed_list.end(); it2++)
{
sig_server_removed(*it2);
}
added_list = std::list< std::pair<CL_IPAddress, std::string> >();
updated_list = std::list< std::pair<CL_IPAddress, std::string> >();
removed_list = std::list<CL_IPAddress>();
// Pass on exception in worker thread to user thread.
if (exception_thrown) throw CL_Error(exception);
}
void CL_BrowseClient_Generic::run()
{
char *buffer = NULL;
try
{
sock.connect(browse_master);
CL_OutputSource_Memory output;
output.write_string(app_id.c_str());
output.write_int32(1); // we are a client
sock.send(output.get_data().data(), output.get_data().size());
while (true)
{
if (sock.get_read_trigger()->wait(100) == false)
{
if (stop_thread) break;
continue;
}
int type = 0;
if ((unsigned int)sock.recv(&type, sizeof(int)) < sizeof(int)) throw CL_Error("EOF during read operation");
type = ntohl(type);
if (type == 0 || type == 1) // added or modified
{
unsigned int ip = 0;
unsigned short port = 0;
if ((unsigned int)sock.recv(&ip, sizeof(int)) < sizeof(int)) throw CL_Error("EOF during read operation");
if ((unsigned int)sock.recv(&port, sizeof(short)) < sizeof(short)) throw CL_Error("EOF during read operation");
port = ntohs(port);
unsigned int size = 0;
if ((unsigned int)sock.recv(&size, sizeof(int)) < sizeof(int)) throw CL_Error("EOF during read operation");
size = ntohl(size);
buffer = new char[size];
if ((unsigned int)sock.recv(buffer, size) < size) throw CL_Error("EOF during read operation");
CL_IPAddress addr(ip, port);
std::pair<CL_IPAddress, std::string> params(addr, std::string(buffer, size));
CL_MutexSection mutex_lock(&mutex);
if (type == 0) added_list.push_back(params);
else updated_list.push_back(params);
delete[] buffer;
buffer = NULL;
}
else
{
unsigned int ip = 0;
unsigned short port = 0;
if ((unsigned int)sock.recv(&ip, sizeof(int)) < sizeof(int)) throw CL_Error("EOF during read operation");
if ((unsigned int)sock.recv(&port, sizeof(short)) < sizeof(short)) throw CL_Error("EOF during read operation");
port = ntohs(port);
CL_IPAddress addr(ip, port);
CL_MutexSection mutex_lock(&mutex);
removed_list.push_back(addr);
}
}
}
catch (CL_Error err)
{
delete[] buffer;
CL_MutexSection mutex_lock(&mutex);
exception = err.message;
exception_thrown = true;
}
}
|
