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 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 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