author | ihse |
Fri, 08 Jun 2018 18:11:32 +0200 | |
changeset 50471 | f0aeede1b855 |
parent 50303 | 7164c3bb55df |
permissions | -rw-r--r-- |
47733 | 1 |
/* |
50471
f0aeede1b855
8204572: SetupJdkLibrary should setup SRC and -I flags automatically
ihse
parents:
50303
diff
changeset
|
2 |
* Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved. |
47733 | 3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 |
* |
|
5 |
* This code is free software; you can redistribute it and/or modify it |
|
6 |
* under the terms of the GNU General Public License version 2 only, as |
|
7 |
* published by the Free Software Foundation. Oracle designates this |
|
8 |
* particular file as subject to the "Classpath" exception as provided |
|
9 |
* by Oracle in the LICENSE file that accompanied this code. |
|
10 |
* |
|
11 |
* This code is distributed in the hope that it will be useful, but WITHOUT |
|
12 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
13 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
14 |
* version 2 for more details (a copy is included in the LICENSE file that |
|
15 |
* accompanied this code). |
|
16 |
* |
|
17 |
* You should have received a copy of the GNU General Public License version |
|
18 |
* 2 along with this work; if not, write to the Free Software Foundation, |
|
19 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
|
20 |
* |
|
21 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
22 |
* or visit www.oracle.com if you need additional information or have any |
|
23 |
* questions. |
|
24 |
*/ |
|
25 |
#include <sys/socket.h> |
|
26 |
#include <string.h> |
|
27 |
#include <errno.h> |
|
28 |
#include <unistd.h> |
|
29 |
||
30 |
#include <jni.h> |
|
31 |
#include <netinet/tcp.h> |
|
50303
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
32 |
#include <netinet/in.h> |
47733 | 33 |
#include "jni_util.h" |
50471
f0aeede1b855
8204572: SetupJdkLibrary should setup SRC and -I flags automatically
ihse
parents:
50303
diff
changeset
|
34 |
#include "jdk_net_LinuxSocketOptions.h" |
47733 | 35 |
|
36 |
/* |
|
37 |
* Class: jdk_net_LinuxSocketOptions |
|
38 |
* Method: setQuickAck |
|
39 |
* Signature: (II)V |
|
40 |
*/ |
|
41 |
JNIEXPORT void JNICALL Java_jdk_net_LinuxSocketOptions_setQuickAck0 |
|
42 |
(JNIEnv *env, jobject unused, jint fd, jboolean on) { |
|
43 |
int optval; |
|
44 |
int rv; |
|
45 |
optval = (on ? 1 : 0); |
|
46 |
rv = setsockopt(fd, SOL_SOCKET, TCP_QUICKACK, &optval, sizeof (optval)); |
|
47 |
if (rv < 0) { |
|
48 |
if (errno == ENOPROTOOPT) { |
|
49 |
JNU_ThrowByName(env, "java/lang/UnsupportedOperationException", |
|
50 |
"unsupported socket option"); |
|
51 |
} else { |
|
52 |
JNU_ThrowByNameWithLastError(env, "java/net/SocketException", |
|
53 |
"set option TCP_QUICKACK failed"); |
|
54 |
} |
|
55 |
} |
|
56 |
} |
|
57 |
||
58 |
/* |
|
59 |
* Class: jdk_net_LinuxSocketOptions |
|
60 |
* Method: getQuickAck |
|
61 |
* Signature: (I)Z; |
|
62 |
*/ |
|
63 |
JNIEXPORT jboolean JNICALL Java_jdk_net_LinuxSocketOptions_getQuickAck0 |
|
64 |
(JNIEnv *env, jobject unused, jint fd) { |
|
65 |
int on; |
|
66 |
socklen_t sz = sizeof (on); |
|
67 |
int rv = getsockopt(fd, SOL_SOCKET, TCP_QUICKACK, &on, &sz); |
|
68 |
if (rv < 0) { |
|
69 |
if (errno == ENOPROTOOPT) { |
|
70 |
JNU_ThrowByName(env, "java/lang/UnsupportedOperationException", |
|
71 |
"unsupported socket option"); |
|
72 |
} else { |
|
73 |
JNU_ThrowByNameWithLastError(env, "java/net/SocketException", |
|
74 |
"get option TCP_QUICKACK failed"); |
|
75 |
} |
|
76 |
} |
|
77 |
return on != 0; |
|
78 |
} |
|
79 |
||
80 |
/* |
|
81 |
* Class: jdk_net_LinuxSocketOptions |
|
82 |
* Method: quickAckSupported |
|
83 |
* Signature: ()Z |
|
84 |
*/ |
|
85 |
JNIEXPORT jboolean JNICALL Java_jdk_net_LinuxSocketOptions_quickAckSupported0 |
|
86 |
(JNIEnv *env, jobject unused) { |
|
87 |
int one = 1; |
|
88 |
int rv, s; |
|
89 |
s = socket(PF_INET, SOCK_STREAM, 0); |
|
90 |
if (s < 0) { |
|
91 |
return JNI_FALSE; |
|
92 |
} |
|
93 |
rv = setsockopt(s, SOL_SOCKET, TCP_QUICKACK, (void *) &one, sizeof (one)); |
|
94 |
if (rv != 0 && errno == ENOPROTOOPT) { |
|
95 |
rv = JNI_FALSE; |
|
96 |
} else { |
|
97 |
rv = JNI_TRUE; |
|
98 |
} |
|
99 |
close(s); |
|
100 |
return rv; |
|
101 |
} |
|
50303
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
102 |
|
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
103 |
static jint socketOptionSupported(jint sockopt) { |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
104 |
jint one = 1; |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
105 |
jint rv, s; |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
106 |
s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
107 |
if (s < 0) { |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
108 |
return 0; |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
109 |
} |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
110 |
rv = setsockopt(s, SOL_TCP, sockopt, (void *) &one, sizeof (one)); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
111 |
if (rv != 0 && errno == ENOPROTOOPT) { |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
112 |
rv = 0; |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
113 |
} else { |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
114 |
rv = 1; |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
115 |
} |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
116 |
close(s); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
117 |
return rv; |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
118 |
} |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
119 |
|
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
120 |
static void handleError(JNIEnv *env, jint rv, const char *errmsg) { |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
121 |
if (rv < 0) { |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
122 |
if (errno == ENOPROTOOPT) { |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
123 |
JNU_ThrowByName(env, "java/lang/UnsupportedOperationException", |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
124 |
"unsupported socket option"); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
125 |
} else { |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
126 |
JNU_ThrowByNameWithLastError(env, "java/net/SocketException", errmsg); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
127 |
} |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
128 |
} |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
129 |
} |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
130 |
|
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
131 |
/* |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
132 |
* Class: jdk_net_LinuxSocketOptions |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
133 |
* Method: keepAliveOptionsSupported0 |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
134 |
* Signature: ()Z |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
135 |
*/ |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
136 |
JNIEXPORT jboolean JNICALL Java_jdk_net_LinuxSocketOptions_keepAliveOptionsSupported0 |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
137 |
(JNIEnv *env, jobject unused) { |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
138 |
return socketOptionSupported(TCP_KEEPIDLE) && socketOptionSupported(TCP_KEEPCNT) |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
139 |
&& socketOptionSupported(TCP_KEEPINTVL); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
140 |
} |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
141 |
|
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
142 |
/* |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
143 |
* Class: jdk_net_LinuxSocketOptions |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
144 |
* Method: setTcpkeepAliveProbes0 |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
145 |
* Signature: (II)V |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
146 |
*/ |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
147 |
JNIEXPORT void JNICALL Java_jdk_net_LinuxSocketOptions_setTcpkeepAliveProbes0 |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
148 |
(JNIEnv *env, jobject unused, jint fd, jint optval) { |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
149 |
jint rv = setsockopt(fd, SOL_TCP, TCP_KEEPCNT, &optval, sizeof (optval)); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
150 |
handleError(env, rv, "set option TCP_KEEPCNT failed"); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
151 |
} |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
152 |
|
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
153 |
/* |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
154 |
* Class: jdk_net_LinuxSocketOptions |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
155 |
* Method: setTcpKeepAliveTime0 |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
156 |
* Signature: (II)V |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
157 |
*/ |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
158 |
JNIEXPORT void JNICALL Java_jdk_net_LinuxSocketOptions_setTcpKeepAliveTime0 |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
159 |
(JNIEnv *env, jobject unused, jint fd, jint optval) { |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
160 |
jint rv = setsockopt(fd, SOL_TCP, TCP_KEEPIDLE, &optval, sizeof (optval)); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
161 |
handleError(env, rv, "set option TCP_KEEPIDLE failed"); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
162 |
} |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
163 |
|
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
164 |
/* |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
165 |
* Class: jdk_net_LinuxSocketOptions |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
166 |
* Method: setTcpKeepAliveIntvl0 |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
167 |
* Signature: (II)V |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
168 |
*/ |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
169 |
JNIEXPORT void JNICALL Java_jdk_net_LinuxSocketOptions_setTcpKeepAliveIntvl0 |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
170 |
(JNIEnv *env, jobject unused, jint fd, jint optval) { |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
171 |
jint rv = setsockopt(fd, SOL_TCP, TCP_KEEPINTVL, &optval, sizeof (optval)); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
172 |
handleError(env, rv, "set option TCP_KEEPINTVL failed"); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
173 |
} |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
174 |
|
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
175 |
/* |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
176 |
* Class: jdk_net_LinuxSocketOptions |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
177 |
* Method: getTcpkeepAliveProbes0 |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
178 |
* Signature: (I)I; |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
179 |
*/ |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
180 |
JNIEXPORT jint JNICALL Java_jdk_net_LinuxSocketOptions_getTcpkeepAliveProbes0 |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
181 |
(JNIEnv *env, jobject unused, jint fd) { |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
182 |
jint optval, rv; |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
183 |
socklen_t sz = sizeof (optval); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
184 |
rv = getsockopt(fd, SOL_TCP, TCP_KEEPCNT, &optval, &sz); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
185 |
handleError(env, rv, "get option TCP_KEEPCNT failed"); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
186 |
return optval; |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
187 |
} |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
188 |
|
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
189 |
/* |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
190 |
* Class: jdk_net_LinuxSocketOptions |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
191 |
* Method: getTcpKeepAliveTime0 |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
192 |
* Signature: (I)I; |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
193 |
*/ |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
194 |
JNIEXPORT jint JNICALL Java_jdk_net_LinuxSocketOptions_getTcpKeepAliveTime0 |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
195 |
(JNIEnv *env, jobject unused, jint fd) { |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
196 |
jint optval, rv; |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
197 |
socklen_t sz = sizeof (optval); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
198 |
rv = getsockopt(fd, SOL_TCP, TCP_KEEPIDLE, &optval, &sz); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
199 |
handleError(env, rv, "get option TCP_KEEPIDLE failed"); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
200 |
return optval; |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
201 |
} |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
202 |
|
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
203 |
/* |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
204 |
* Class: jdk_net_LinuxSocketOptions |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
205 |
* Method: getTcpKeepAliveIntvl0 |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
206 |
* Signature: (I)I; |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
207 |
*/ |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
208 |
JNIEXPORT jint JNICALL Java_jdk_net_LinuxSocketOptions_getTcpKeepAliveIntvl0 |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
209 |
(JNIEnv *env, jobject unused, jint fd) { |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
210 |
jint optval, rv; |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
211 |
socklen_t sz = sizeof (optval); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
212 |
rv = getsockopt(fd, SOL_TCP, TCP_KEEPINTVL, &optval, &sz); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
213 |
handleError(env, rv, "get option TCP_KEEPINTVL failed"); |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
214 |
return optval; |
7164c3bb55df
8194298: Add support for per Socket configuration of TCP keepalive
vtewari
parents:
47733
diff
changeset
|
215 |
} |