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/* libs/cutils/socket_loopback_server.c
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#include <cutils/sockets.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <stddef.h>
#define LISTEN_BACKLOG 4
#ifndef HAVE_WINSOCK
#include <sys/socket.h>
#include <sys/select.h>
#include <sys/types.h>
#include <netinet/in.h>
#endif
/* open listen() port on loopback interface */
int socket_loopback_server(int port, int type)
{
struct sockaddr_in addr;
size_t alen;
int s, n;
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
s = socket(AF_INET, type, 0);
if(s < 0) return -1;
n = 1;
setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &n, sizeof(n));
if(bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
close(s);
return -1;
}
if (type == SOCK_STREAM) {
int ret;
ret = listen(s, LISTEN_BACKLOG);
if (ret < 0) {
close(s);
return -1;
}
}
return s;
}
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