1 files changed, 71 insertions, 0 deletions
diff --git a/libcutils/socket_loopback_server.c b/libcutils/socket_loopback_server.c
new file mode 100644
index 000000000..3208488ad
--- /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;
+}
+