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 */
39int 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