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
|
// sock.cpp
/* Copyright 2009 10gen Inc.
*
* 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 "stdafx.h"
#include "sock.h"
namespace mongo {
static mongo::mutex sock_mutex;
static bool ipv6 = false;
void enableIPv6(bool state) { ipv6 = state; }
bool IPv6Enabled() { return ipv6; }
SockAddr::SockAddr(int sourcePort) {
memset(as<sockaddr_in>().sin_zero, 0, sizeof(as<sockaddr_in>().sin_zero));
as<sockaddr_in>().sin_family = AF_INET;
as<sockaddr_in>().sin_port = htons(sourcePort);
as<sockaddr_in>().sin_addr.s_addr = htonl(INADDR_ANY);
addressSize = sizeof(sockaddr_in);
}
SockAddr::SockAddr(const char * iporhost , int port) {
if (!strcmp(iporhost, "localhost"))
iporhost = "127.0.0.1";
if (strchr(iporhost, '/')){
#ifdef _WIN32
uassert(13080, "no unix socket support on windows", false);
#endif
uassert(13079, "path to unix socket too long", strlen(iporhost) < sizeof(as<sockaddr_un>().sun_path));
as<sockaddr_un>().sun_family = AF_UNIX;
strcpy(as<sockaddr_un>().sun_path, iporhost);
addressSize = sizeof(sockaddr_un);
}else{
addrinfo* addrs = NULL;
addrinfo hints;
memset(&hints, 0, sizeof(addrinfo));
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_ADDRCONFIG;
hints.ai_family = (IPv6Enabled() ? AF_UNSPEC : AF_INET);
stringstream ss;
ss << port;
int ret = getaddrinfo(iporhost, ss.str().c_str(), &hints, &addrs);
if (ret){
log() << "getaddrinfo(\"" << iporhost << "\") failed: " << gai_strerror(ret) << endl;
*this = SockAddr(port);
}else{
//TODO: handle other addresses in linked list;
assert(addrs->ai_addrlen <= sizeof(sa));
memcpy(&sa, addrs->ai_addr, addrs->ai_addrlen);
addressSize = addrs->ai_addrlen;
freeaddrinfo(addrs);
}
}
}
bool SockAddr::isLocalHost() const {
switch (getType()){
case AF_INET: return getAddr() == "127.0.0.1";
case AF_INET6: return getAddr() == "::1";
case AF_UNIX: return true;
default: return false;
}
assert(false);
return false;
}
string hostbyname(const char *hostname) {
string addr = SockAddr(hostname, 0).getAddr();
if (addr == "0.0.0.0")
return "";
else
return addr;
}
class UDPConnection {
public:
UDPConnection() {
sock = 0;
}
~UDPConnection() {
if ( sock ) {
closesocket(sock);
sock = 0;
}
}
bool init(const SockAddr& myAddr);
int recvfrom(char *buf, int len, SockAddr& sender);
int sendto(char *buf, int len, const SockAddr& EndPoint);
int mtu(const SockAddr& sa) {
return sa.isLocalHost() ? 16384 : 1480;
}
SOCKET sock;
};
inline int UDPConnection::recvfrom(char *buf, int len, SockAddr& sender) {
return ::recvfrom(sock, buf, len, 0, sender.raw(), &sender.addressSize);
}
inline int UDPConnection::sendto(char *buf, int len, const SockAddr& EndPoint) {
if ( 0 && rand() < (RAND_MAX>>4) ) {
out() << " NOTSENT ";
return 0;
}
return ::sendto(sock, buf, len, 0, EndPoint.raw(), EndPoint.addressSize);
}
inline bool UDPConnection::init(const SockAddr& myAddr) {
sock = socket(myAddr.getType(), SOCK_DGRAM, IPPROTO_UDP);
if ( sock == INVALID_SOCKET ) {
out() << "invalid socket? " << errnoWithDescription() << endl;
return false;
}
if ( ::bind(sock, myAddr.raw(), myAddr.addressSize) != 0 ) {
out() << "udp init failed" << endl;
closesocket(sock);
sock = 0;
return false;
}
socklen_t optLen;
int rcvbuf;
if (getsockopt(sock,
SOL_SOCKET,
SO_RCVBUF,
(char*)&rcvbuf,
&optLen) != -1)
out() << "SO_RCVBUF:" << rcvbuf << endl;
return true;
}
void sendtest() {
out() << "sendtest\n";
SockAddr me(27016);
SockAddr dest("127.0.0.1", 27015);
UDPConnection c;
if ( c.init(me) ) {
char buf[256];
out() << "sendto: ";
out() << c.sendto(buf, sizeof(buf), dest) << " " << errnoWithDescription() << endl;
}
out() << "end\n";
}
void listentest() {
out() << "listentest\n";
SockAddr me(27015);
SockAddr sender;
UDPConnection c;
if ( c.init(me) ) {
char buf[256];
out() << "recvfrom: ";
out() << c.recvfrom(buf, sizeof(buf), sender) << " " << errnoWithDescription() << endl;
}
out() << "end listentest\n";
}
void xmain();
#if defined(_WIN32)
namespace {
struct WinsockInit {
WinsockInit() {
WSADATA d;
if ( WSAStartup(MAKEWORD(2,2), &d) != 0 ) {
out() << "ERROR: wsastartup failed " << errnoWithDescription() << endl;
problem() << "ERROR: wsastartup failed " << errnoWithDescription() << endl;
dbexit( EXIT_NTSERVICE_ERROR );
}
}
} winsock_init;
}
#endif
SockAddr unknownAddress( "0.0.0.0", 0 );
ListeningSockets* ListeningSockets::_instance = new ListeningSockets();
ListeningSockets* ListeningSockets::get(){
return _instance;
}
} // namespace mongo
|
