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
|
/*
Copyright (c) 2007-2011 iMatix Corporation
Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
0MQ is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "tcp_socket.hpp"
#include "platform.hpp"
#include "err.hpp"
#ifdef ZMQ_HAVE_WINDOWS
zmq::tcp_socket_t::tcp_socket_t () :
s (retired_fd)
{
}
zmq::tcp_socket_t::~tcp_socket_t ()
{
if (s != retired_fd)
close ();
}
int zmq::tcp_socket_t::open (fd_t fd_, uint64_t sndbuf_, uint64_t rcvbuf_)
{
zmq_assert (s == retired_fd);
s = fd_;
if (sndbuf_) {
int sz = (int) sndbuf_;
int rc = setsockopt (s, SOL_SOCKET, SO_SNDBUF,
(char*) &sz, sizeof (int));
errno_assert (rc == 0);
}
if (rcvbuf_) {
int sz = (int) rcvbuf_;
int rc = setsockopt (s, SOL_SOCKET, SO_RCVBUF,
(char*) &sz, sizeof (int));
errno_assert (rc == 0);
}
return 0;
}
int zmq::tcp_socket_t::close ()
{
zmq_assert (s != retired_fd);
int rc = closesocket (s);
wsa_assert (rc != SOCKET_ERROR);
s = retired_fd;
return 0;
}
zmq::fd_t zmq::tcp_socket_t::get_fd ()
{
return s;
}
int zmq::tcp_socket_t::write (const void *data, int size)
{
int nbytes = send (s, (char*) data, size, 0);
// If not a single byte can be written to the socket in non-blocking mode
// we'll get an error (this may happen during the speculative write).
if (nbytes == SOCKET_ERROR && WSAGetLastError () == WSAEWOULDBLOCK)
return 0;
// Signalise peer failure.
if (nbytes == -1 && (
WSAGetLastError () == WSAENETDOWN ||
WSAGetLastError () == WSAENETRESET ||
WSAGetLastError () == WSAEHOSTUNREACH ||
WSAGetLastError () == WSAECONNABORTED ||
WSAGetLastError () == WSAETIMEDOUT ||
WSAGetLastError () == WSAECONNRESET))
return -1;
wsa_assert (nbytes != SOCKET_ERROR);
return (size_t) nbytes;
}
int zmq::tcp_socket_t::read (void *data, int size)
{
int nbytes = recv (s, (char*) data, size, 0);
// If not a single byte can be read from the socket in non-blocking mode
// we'll get an error (this may happen during the speculative read).
if (nbytes == SOCKET_ERROR && WSAGetLastError () == WSAEWOULDBLOCK)
return 0;
// Connection failure.
if (nbytes == -1 && (
WSAGetLastError () == WSAENETDOWN ||
WSAGetLastError () == WSAENETRESET ||
WSAGetLastError () == WSAECONNABORTED ||
WSAGetLastError () == WSAETIMEDOUT ||
WSAGetLastError () == WSAECONNRESET ||
WSAGetLastError () == WSAECONNREFUSED ||
WSAGetLastError () == WSAENOTCONN))
return -1;
wsa_assert (nbytes != SOCKET_ERROR);
// Orderly shutdown by the other peer.
if (nbytes == 0)
return -1;
return (size_t) nbytes;
}
#else
#include <unistd.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/tcp.h>
#include <netinet/in.h>
#include <netdb.h>
#include <fcntl.h>
zmq::tcp_socket_t::tcp_socket_t () :
s (retired_fd)
{
}
zmq::tcp_socket_t::~tcp_socket_t ()
{
if (s != retired_fd)
close ();
}
int zmq::tcp_socket_t::open (fd_t fd_, uint64_t sndbuf_, uint64_t rcvbuf_)
{
assert (s == retired_fd);
s = fd_;
if (sndbuf_) {
int sz = (int) sndbuf_;
int rc = setsockopt (s, SOL_SOCKET, SO_SNDBUF, &sz, sizeof (int));
errno_assert (rc == 0);
}
if (rcvbuf_) {
int sz = (int) rcvbuf_;
int rc = setsockopt (s, SOL_SOCKET, SO_RCVBUF, &sz, sizeof (int));
errno_assert (rc == 0);
}
#if defined ZMQ_HAVE_OSX || defined ZMQ_HAVE_FREEBSD
int set = 1;
int rc = setsockopt (s, SOL_SOCKET, SO_NOSIGPIPE, &set, sizeof (int));
errno_assert (rc == 0);
#endif
return 0;
}
int zmq::tcp_socket_t::close ()
{
zmq_assert (s != retired_fd);
int rc = ::close (s);
if (rc != 0)
return -1;
s = retired_fd;
return 0;
}
zmq::fd_t zmq::tcp_socket_t::get_fd ()
{
return s;
}
int zmq::tcp_socket_t::write (const void *data, int size)
{
ssize_t nbytes = send (s, data, size, 0);
// Several errors are OK. When speculative write is being done we may not
// be able to write a single byte to the socket. Also, SIGSTOP issued
// by a debugging tool can result in EINTR error.
if (nbytes == -1 && (errno == EAGAIN || errno == EWOULDBLOCK ||
errno == EINTR))
return 0;
// Signalise peer failure.
if (nbytes == -1 && (errno == ECONNRESET || errno == EPIPE))
return -1;
errno_assert (nbytes != -1);
return (size_t) nbytes;
}
int zmq::tcp_socket_t::read (void *data, int size)
{
ssize_t nbytes = recv (s, data, size, 0);
// Several errors are OK. When speculative read is being done we may not
// be able to read a single byte to the socket. Also, SIGSTOP issued
// by a debugging tool can result in EINTR error.
if (nbytes == -1 && (errno == EAGAIN || errno == EWOULDBLOCK ||
errno == EINTR))
return 0;
// Signalise peer failure.
if (nbytes == -1 && (errno == ECONNRESET || errno == ECONNREFUSED ||
errno == ETIMEDOUT || errno == EHOSTUNREACH))
return -1;
errno_assert (nbytes != -1);
// Orderly shutdown by the other peer.
if (nbytes == 0)
return -1;
return (size_t) nbytes;
}
#endif
|
