1 /*
2 * Copyright (c) 2017, 2018 Oracle and/or its affiliates. All rights reserved.
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>
32 #include <netinet/in.h>
33 #include "jni_util.h"
34
35 /*
36 * Class: jdk_net_LinuxSocketOptions
37 * Method: setQuickAck
38 * Signature: (II)V
39 */
40 JNIEXPORT void JNICALL Java_jdk_net_LinuxSocketOptions_setQuickAck0
41 (JNIEnv *env, jobject unused, jint fd, jboolean on) {
42 int optval;
43 int rv;
44 optval = (on ? 1 : 0);
45 rv = setsockopt(fd, SOL_SOCKET, TCP_QUICKACK, &optval, sizeof (optval));
46 if (rv < 0) {
47 if (errno == ENOPROTOOPT) {
48 JNU_ThrowByName(env, "java/lang/UnsupportedOperationException",
49 "unsupported socket option");
50 } else {
51 JNU_ThrowByNameWithLastError(env, "java/net/SocketException",
52 "set option TCP_QUICKACK failed");
53 }
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1 /*
2 * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
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>
32 #include <netinet/in.h>
33 #include "jni_util.h"
34 #include "jdk_net_LinuxSocketOptions.h"
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 }
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