1 /* 2 ** Copyright 2006, 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 <errno.h> 18 #include <stddef.h> 19 #include <stdlib.h> 20 #include <string.h> 21 #include <unistd.h> 22 23 #ifndef HAVE_WINSOCK 24 #include <sys/socket.h> 25 #include <sys/select.h> 26 #include <sys/types.h> 27 #include <netinet/in.h> 28 #endif 29 30 #include <cutils/sockets.h> 31 32 /* Connect to port on the loopback IP interface. type is 33 * SOCK_STREAM or SOCK_DGRAM. 34 * return is a file descriptor or -1 on error 35 */ 36 int socket_loopback_client(int port, int type) 37 { 38 struct sockaddr_in addr; 39 int s; 40 41 memset(&addr, 0, sizeof(addr)); 42 addr.sin_family = AF_INET; 43 addr.sin_port = htons(port); 44 addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 45 46 s = socket(AF_INET, type, 0); 47 if(s < 0) return -1; 48 49 if(connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) { 50 close(s); 51 return -1; 52 } 53 54 return s; 55 56 } 57 58
