--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/unix/native/libnet/SdpSupport.c	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,126 @@
+/*
+ * Copyright (c) 2009, 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <errno.h>
+
+#if defined(__solaris__)
+  #if !defined(PROTO_SDP)
+    #define PROTO_SDP       257
+  #endif
+#elif defined(__linux__)
+  #if !defined(AF_INET_SDP)
+    #define AF_INET_SDP     27
+  #endif
+#endif
+
+#include "jni.h"
+#include "jni_util.h"
+#include "net_util.h"
+
+#define RESTARTABLE(_cmd, _result) do { \
+  do { \
+    _result = _cmd; \
+  } while((_result == -1) && (errno == EINTR)); \
+} while(0)
+
+
+/**
+ * Creates a SDP socket.
+ */
+static int create(JNIEnv* env)
+{
+    int s;
+
+#if defined(__solaris__)
+    int domain = ipv6_available() ? AF_INET6 : AF_INET;
+    s = socket(domain, SOCK_STREAM, PROTO_SDP);
+#elif defined(__linux__)
+    /**
+     * IPv6 not supported by SDP on Linux
+     */
+    if (ipv6_available()) {
+        JNU_ThrowIOException(env, "IPv6 not supported");
+        return -1;
+    }
+    s = socket(AF_INET_SDP, SOCK_STREAM, 0);
+#else
+    /* not supported on other platforms at this time */
+    s = -1;
+    errno = EPROTONOSUPPORT;
+#endif
+
+    if (s < 0)
+        JNU_ThrowIOExceptionWithLastError(env, "socket");
+    return s;
+}
+
+/**
+ * Creates a SDP socket, returning file descriptor referencing the socket.
+ */
+JNIEXPORT jint JNICALL
+Java_sun_net_sdp_SdpSupport_create0(JNIEnv *env, jclass cls)
+{
+    return create(env);
+}
+
+/**
+ * Converts an existing file descriptor, that references an unbound TCP socket,
+ * to SDP.
+ */
+JNIEXPORT void JNICALL
+Java_sun_net_sdp_SdpSupport_convert0(JNIEnv *env, jclass cls, int fd)
+{
+    int s = create(env);
+    if (s >= 0) {
+        socklen_t len;
+        int arg, res;
+        struct linger linger;
+
+        /* copy socket options that are relevant to SDP */
+        len = sizeof(arg);
+        if (getsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&arg, &len) == 0)
+            setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char*)&arg, len);
+#ifdef SO_REUSEPORT
+        len = sizeof(arg);
+        if (getsockopt(fd, SOL_SOCKET, SO_REUSEPORT, (char*)&arg, &len) == 0)
+            setsockopt(s, SOL_SOCKET, SO_REUSEPORT, (char*)&arg, len);
+#endif
+        len = sizeof(arg);
+        if (getsockopt(fd, SOL_SOCKET, SO_OOBINLINE, (char*)&arg, &len) == 0)
+            setsockopt(s, SOL_SOCKET, SO_OOBINLINE, (char*)&arg, len);
+        len = sizeof(linger);
+        if (getsockopt(fd, SOL_SOCKET, SO_LINGER, (void*)&linger, &len) == 0)
+            setsockopt(s, SOL_SOCKET, SO_LINGER, (char*)&linger, len);
+
+        RESTARTABLE(dup2(s, fd), res);
+        if (res < 0)
+            JNU_ThrowIOExceptionWithLastError(env, "dup2");
+        res = close(s);
+        if (res < 0 && !(*env)->ExceptionOccurred(env))
+            JNU_ThrowIOExceptionWithLastError(env, "close");
+    }
+}