Move IpClient to NetworkStack

Test: atest FrameworksNetTests NetworkStackTests
Bug: b/112869080
Change-Id: I7d00848c052382cd1b6ce458868bed6a1e9e8ec5

1 files changed, 67 insertions, 0 deletions

diff --git a/src/android/net/dhcp/DhcpDiscoverPacket.java b/src/android/net/dhcp/DhcpDiscoverPacket.java
new file mode 100644
index 0000000..11f2b61
--- /dev/null
+++ b/src/android/net/dhcp/DhcpDiscoverPacket.java
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+package android.net.dhcp;
+
+import java.net.Inet4Address;
+import java.nio.ByteBuffer;
+
+/**
+ * This class implements the DHCP-DISCOVER packet.
+ */
+class DhcpDiscoverPacket extends DhcpPacket {
+    /**
+     * The IP address of the client which sent this packet.
+     */
+    final Inet4Address mSrcIp;
+
+    /**
+     * Generates a DISCOVER packet with the specified parameters.
+     */
+    DhcpDiscoverPacket(int transId, short secs, Inet4Address relayIp, byte[] clientMac,
+            boolean broadcast, Inet4Address srcIp) {
+        super(transId, secs, INADDR_ANY, INADDR_ANY, INADDR_ANY, relayIp, clientMac, broadcast);
+        mSrcIp = srcIp;
+    }
+
+    public String toString() {
+        String s = super.toString();
+        return s + " DISCOVER " +
+                (mBroadcast ? "broadcast " : "unicast ");
+    }
+
+    /**
+     * Fills in a packet with the requested DISCOVER parameters.
+     */
+    public ByteBuffer buildPacket(int encap, short destUdp, short srcUdp) {
+        ByteBuffer result = ByteBuffer.allocate(MAX_LENGTH);
+        fillInPacket(encap, INADDR_BROADCAST, mSrcIp, destUdp, srcUdp, result, DHCP_BOOTREQUEST,
+                mBroadcast);
+        result.flip();
+        return result;
+    }
+
+    /**
+     * Adds optional parameters to a DISCOVER packet.
+     */
+    void finishPacket(ByteBuffer buffer) {
+        addTlv(buffer, DHCP_MESSAGE_TYPE, DHCP_MESSAGE_TYPE_DISCOVER);
+        addTlv(buffer, DHCP_CLIENT_IDENTIFIER, getClientId());
+        addCommonClientTlvs(buffer);
+        addTlv(buffer, DHCP_PARAMETER_LIST, mRequestedParams);
+        addTlvEnd(buffer);
+    }
+}