1 /* libs/cutils/socket_network_client.c 2 ** 3 ** Copyright 2006, The Android Open Source Project 4 ** 5 ** Licensed under the Apache License, Version 2.0 (the "License"); 6 ** you may not use this file except in compliance with the License. 7 ** You may obtain a copy of the License at 8 ** 9 ** http://www.apache.org/licenses/LICENSE-2.0 10 ** 11 ** Unless required by applicable law or agreed to in writing, software 12 ** distributed under the License is distributed on an "AS IS" BASIS, 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 ** See the License for the specific language governing permissions and 15 ** limitations under the License. 16 */ 17 18 #include <cutils/sockets.h> 19 20 #include <stdlib.h> 21 #include <string.h> 22 #include <unistd.h> 23 #include <errno.h> 24 #include <stddef.h> 25 26 #ifndef HAVE_WINSOCK 27 #include <sys/socket.h> 28 #include <sys/select.h> 29 #include <sys/types.h> 30 #include <netinet/in.h> 31 #include <netdb.h> 32 #endif 33 34 35 /* Connect to port on the IP interface. type is 36 * SOCK_STREAM or SOCK_DGRAM. 37 * return is a file descriptor or -1 on error 38 */ 39 int socket_network_client(const char *host, int port, int type) 40 { 41 struct hostent *hp; 42 struct sockaddr_in addr; 43 socklen_t alen; 44 int s; 45 46 hp = gethostbyname(host); 47 if(hp == 0) return -1; 48 49 memset(&addr, 0, sizeof(addr)); 50 addr.sin_family = hp->h_addrtype; 51 addr.sin_port = htons(port); 52 memcpy(&addr.sin_addr, hp->h_addr, hp->h_length); 53 54 s = socket(hp->h_addrtype, type, 0); 55 if(s < 0) return -1; 56 57 if(connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) { 58 close(s); 59 return -1; 60 } 61 62 return s; 63 64 } 65 66
