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 #if !defined(_WIN32)
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 */
socket_loopback_client(int port,int type)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