1 /*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "netdutils/SocketOption.h"
18
19 #include <netinet/in.h>
20 #include <netinet/tcp.h>
21 #include <sys/socket.h>
22 #include <utility>
23
24 #include "netdutils/Syscalls.h"
25
26 namespace android {
27 namespace netdutils {
28
enableSockopt(Fd sock,int level,int optname)29 Status enableSockopt(Fd sock, int level, int optname) {
30 auto& sys = sSyscalls.get();
31 const int on = 1;
32 return sys.setsockopt(sock, level, optname, &on, sizeof(on));
33 }
34
enableTcpKeepAlives(Fd sock,unsigned idleTime,unsigned numProbes,unsigned probeInterval)35 Status enableTcpKeepAlives(Fd sock, unsigned idleTime, unsigned numProbes, unsigned probeInterval) {
36 RETURN_IF_NOT_OK(enableSockopt(sock, SOL_SOCKET, SO_KEEPALIVE));
37
38 auto& sys = sSyscalls.get();
39 if (idleTime != 0) {
40 RETURN_IF_NOT_OK(sys.setsockopt(sock, SOL_TCP, TCP_KEEPIDLE, &idleTime, sizeof(idleTime)));
41 }
42 if (numProbes != 0) {
43 RETURN_IF_NOT_OK(sys.setsockopt(sock, SOL_TCP, TCP_KEEPCNT, &numProbes, sizeof(numProbes)));
44 }
45 if (probeInterval != 0) {
46 RETURN_IF_NOT_OK(sys.setsockopt(sock, SOL_TCP, TCP_KEEPINTVL, &probeInterval,
47 sizeof(probeInterval)));
48 }
49
50 return status::ok;
51 }
52
53 } // namespace netdutils
54 } // namespace android
55