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
|
/* listener.cpp
* Copyright (C) 2003 Tommi Maekitalo
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* is provided AS IS, WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, and
* NON-INFRINGEMENT. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "tnt/listener.h"
#include "tnt/tntnet.h"
#include <cxxtools/log.h>
#include <errno.h>
#include <unistd.h>
#ifdef WITH_GNUTLS
# include "tnt/gnutls.h"
#endif
#ifdef WITH_OPENSSL
# include "tnt/openssl.h"
#endif
log_define("tntnet.listener")
static void doListenRetry(cxxtools::net::Server& server,
const char* ipaddr, unsigned short int port)
{
for (unsigned n = 1; true; ++n)
{
try
{
log_debug("listen " << ipaddr << ':' << port);
server.listen(ipaddr, port, tnt::Listener::getBacklog());
return;
}
catch (const cxxtools::net::Exception& e)
{
log_debug("cxxtools::net::Exception caught: errno=" << e.getErrno() << " msg=" << e.what());
if (e.getErrno() != EADDRINUSE || n > tnt::Listener::getListenRetry())
{
log_debug("rethrow exception");
throw;
}
log_warn("address " << ipaddr << ':' << port << " in use - retry; n = " << n);
::sleep(1);
}
}
}
namespace tnt
{
void ListenerBase::doStop()
{
log_warn("stop listener " << ipaddr << ':' << port);
try
{
// connect once to wake up listener, so it will check stop-flag
cxxtools::net::Stream(ipaddr, port);
}
catch (const std::exception& e)
{
log_warn("error waking up listener: " << e.what() << " try 127.0.0.1");
cxxtools::net::Stream("127.0.0.1", port);
}
}
int Listener::backlog = 16;
unsigned Listener::listenRetry = 5;
Listener::Listener(const std::string& ipaddr, unsigned short int port, Jobqueue& q)
: ListenerBase(ipaddr, port),
queue(q)
{
log_info("listen ip=" << ipaddr << " port=" << port);
doListenRetry(server, ipaddr.c_str(), port);
}
void Listener::run()
{
// accept-loop
log_debug("enter accept-loop");
while (!Tntnet::shouldStop())
{
try
{
Tcpjob* j = new Tcpjob;
Jobqueue::JobPtr p(j);
j->accept(server);
log_debug("connection accepted");
if (Tntnet::shouldStop())
break;
queue.put(p);
}
catch (const std::exception& e)
{
log_error("error in accept-loop: " << e.what());
}
}
log_debug("stop listener");
}
#ifdef WITH_GNUTLS
#define USE_SSL
#endif
#ifdef WITH_OPENSSL
#define USE_SSL
#endif
#ifdef USE_SSL
Ssllistener::Ssllistener(const char* certificateFile,
const char* keyFile,
const std::string& ipaddr, unsigned short int port,
Jobqueue& q)
: ListenerBase(ipaddr, port),
server(certificateFile, keyFile),
queue(q)
{
log_info("listen ip=" << ipaddr << " port=" << port << " (ssl)");
doListenRetry(server, ipaddr.c_str(), port);
}
void Ssllistener::run()
{
// accept-loop
log_debug("enter accept-loop (ssl)");
while (!Tntnet::shouldStop())
{
try
{
SslTcpjob* j = new SslTcpjob;
Jobqueue::JobPtr p(j);
j->accept(server);
if (Tntnet::shouldStop())
break;
queue.put(p);
}
catch (const std::exception& e)
{
log_error("error in ssl-accept-loop: " << e.what());
}
}
log_debug("stop ssl-listener");
}
#endif // USE_SSL
}
|
