auto import from //depot/cupcake/@135843
diff --git a/libcutils/socket_loopback_server.c b/libcutils/socket_loopback_server.c
new file mode 100644
index 0000000..3208488
--- /dev/null
+++ b/libcutils/socket_loopback_server.c
@@ -0,0 +1,71 @@
+/* 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;
+}
+