diff --git a/core/java/android/net/InvalidPacketException.java b/core/java/android/net/InvalidPacketException.java
index 909998d..b3b0f11 100644
--- a/core/java/android/net/InvalidPacketException.java
+++ b/core/java/android/net/InvalidPacketException.java
@@ -28,7 +28,7 @@
  */
 @SystemApi
 public class InvalidPacketException extends Exception {
-    public final int error;
+    private final int mError;
 
     // Must match SocketKeepalive#ERROR_INVALID_IP_ADDRESS.
     /** Invalid IP address. */
@@ -56,6 +56,11 @@
      * See the error code for details.
      */
     public InvalidPacketException(@ErrorCode final int error) {
-        this.error = error;
+        this.mError = error;
+    }
+
+    /** Get error code. */
+    public int getError() {
+        return mError;
     }
 }
diff --git a/core/java/android/net/KeepalivePacketData.java b/core/java/android/net/KeepalivePacketData.java
index 6c0ba2f..e21cb44 100644
--- a/core/java/android/net/KeepalivePacketData.java
+++ b/core/java/android/net/KeepalivePacketData.java
@@ -19,6 +19,7 @@
 import static android.net.InvalidPacketException.ERROR_INVALID_IP_ADDRESS;
 import static android.net.InvalidPacketException.ERROR_INVALID_PORT;
 
+import android.annotation.IntRange;
 import android.annotation.NonNull;
 import android.annotation.SystemApi;
 import android.net.util.IpUtils;
@@ -37,17 +38,17 @@
 
     /** Source IP address */
     @NonNull
-    public final InetAddress srcAddress;
+    private final InetAddress mSrcAddress;
 
     /** Destination IP address */
     @NonNull
-    public final InetAddress dstAddress;
+    private final InetAddress mDstAddress;
 
     /** Source port */
-    public final int srcPort;
+    private final int mSrcPort;
 
     /** Destination port */
-    public final int dstPort;
+    private final int mDstPort;
 
     /** Packet data. A raw byte string of packet data, not including the link-layer header. */
     private final byte[] mPacket;
@@ -60,13 +61,14 @@
     /**
      * A holding class for data necessary to build a keepalive packet.
      */
-    protected KeepalivePacketData(@NonNull InetAddress srcAddress, int srcPort,
-            @NonNull InetAddress dstAddress, int dstPort,
-                    @NonNull byte[] data) throws InvalidPacketException {
-        this.srcAddress = srcAddress;
-        this.dstAddress = dstAddress;
-        this.srcPort = srcPort;
-        this.dstPort = dstPort;
+    protected KeepalivePacketData(@NonNull InetAddress srcAddress,
+            @IntRange(from = 0, to = 65535) int srcPort, @NonNull InetAddress dstAddress,
+            @IntRange(from = 0, to = 65535) int dstPort,
+            @NonNull byte[] data) throws InvalidPacketException {
+        this.mSrcAddress = srcAddress;
+        this.mDstAddress = dstAddress;
+        this.mSrcPort = srcPort;
+        this.mDstPort = dstPort;
         this.mPacket = data;
 
         // Check we have two IP addresses of the same family.
@@ -83,6 +85,31 @@
         }
     }
 
+    /** Get source IP address. */
+    @NonNull
+    public InetAddress getSrcAddress() {
+        return mSrcAddress;
+    }
+
+    /** Get destination IP address. */
+    @NonNull
+    public InetAddress getDstAddress() {
+        return mDstAddress;
+    }
+
+    /** Get source port number. */
+    public int getSrcPort() {
+        return mSrcPort;
+    }
+
+    /** Get destination port number. */
+    public int getDstPort() {
+        return mDstPort;
+    }
+
+    /**
+     * Returns a byte array of the given packet data.
+     */
     @NonNull
     public byte[] getPacket() {
         return mPacket.clone();
diff --git a/core/java/android/net/NattKeepalivePacketData.java b/core/java/android/net/NattKeepalivePacketData.java
index 29da495..22288b6 100644
--- a/core/java/android/net/NattKeepalivePacketData.java
+++ b/core/java/android/net/NattKeepalivePacketData.java
@@ -94,10 +94,10 @@
 
     /** Write to parcel */
     public void writeToParcel(@NonNull Parcel out, int flags) {
-        out.writeString(srcAddress.getHostAddress());
-        out.writeString(dstAddress.getHostAddress());
-        out.writeInt(srcPort);
-        out.writeInt(dstPort);
+        out.writeString(getSrcAddress().getHostAddress());
+        out.writeString(getDstAddress().getHostAddress());
+        out.writeInt(getSrcPort());
+        out.writeInt(getDstPort());
     }
 
     /** Parcelable Creator */
@@ -115,7 +115,7 @@
                                     dstAddress, dstPort);
                     } catch (InvalidPacketException e) {
                         throw new IllegalArgumentException(
-                                "Invalid NAT-T keepalive data: " + e.error);
+                                "Invalid NAT-T keepalive data: " + e.getError());
                     }
                 }
 
@@ -128,14 +128,16 @@
     public boolean equals(@Nullable final Object o) {
         if (!(o instanceof NattKeepalivePacketData)) return false;
         final NattKeepalivePacketData other = (NattKeepalivePacketData) o;
-        return this.srcAddress.equals(other.srcAddress)
-            && this.dstAddress.equals(other.dstAddress)
-            && this.srcPort == other.srcPort
-            && this.dstPort == other.dstPort;
+        final InetAddress srcAddress = getSrcAddress();
+        final InetAddress dstAddress = getDstAddress();
+        return srcAddress.equals(other.getSrcAddress())
+            && dstAddress.equals(other.getDstAddress())
+            && getSrcPort() == other.getSrcPort()
+            && getDstPort() == other.getDstPort();
     }
 
     @Override
     public int hashCode() {
-        return Objects.hash(srcAddress, dstAddress, srcPort, dstPort);
+        return Objects.hash(getSrcAddress(), getDstAddress(), getSrcPort(), getDstPort());
     }
 }
diff --git a/core/java/android/net/NetworkCapabilities.java b/core/java/android/net/NetworkCapabilities.java
index 64e9350..ad1e501 100644
--- a/core/java/android/net/NetworkCapabilities.java
+++ b/core/java/android/net/NetworkCapabilities.java
@@ -19,6 +19,7 @@
 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.annotation.RequiresPermission;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
 import android.compat.annotation.UnsupportedAppUsage;
@@ -32,6 +33,7 @@
 import android.util.proto.ProtoOutputStream;
 
 import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.BitUtils;
 import com.android.internal.util.Preconditions;
 
@@ -86,6 +88,7 @@
     /**
      * Completely clears the contents of this object, removing even the capabilities that are set
      * by default when the object is constructed.
+     * @hide
      */
     public void clearAll() {
         mNetworkCapabilities = mTransportTypes = mUnwantedNetworkCapabilities = 0;
@@ -427,11 +430,12 @@
 
     /**
      * Adds the given capability to this {@code NetworkCapability} instance.
-     * Multiple capabilities may be applied sequentially.  Note that when searching
-     * for a network to satisfy a request, all capabilities requested must be satisfied.
+     * Note that when searching for a network to satisfy a request, all capabilities
+     * requested must be satisfied.
      *
      * @param capability the capability to be added.
      * @return This NetworkCapabilities instance, to facilitate chaining.
+     * @hide
      */
     public @NonNull NetworkCapabilities addCapability(@NetCapability int capability) {
         // If the given capability was previously added to the list of unwanted capabilities
@@ -446,9 +450,9 @@
 
     /**
      * Adds the given capability to the list of unwanted capabilities of this
-     * {@code NetworkCapability} instance.  Multiple unwanted capabilities may be applied
-     * sequentially.  Note that when searching for a network to satisfy a request, the network
-     * must not contain any capability from unwanted capability list.
+     * {@code NetworkCapability} instance. Note that when searching for a network to
+     * satisfy a request, the network must not contain any capability from unwanted capability
+     * list.
      * <p>
      * If the capability was previously added to the list of required capabilities (for
      * example, it was there by default or added using {@link #addCapability(int)} method), then
@@ -468,6 +472,7 @@
      *
      * @param capability the capability to be removed.
      * @return This NetworkCapabilities instance, to facilitate chaining.
+     * @hide
      */
     public @NonNull NetworkCapabilities removeCapability(@NetCapability int capability) {
         // Note that this method removes capabilities that were added via addCapability(int),
@@ -482,7 +487,7 @@
     /**
      * Sets (or clears) the given capability on this {@link NetworkCapabilities}
      * instance.
-     *
+     * @hide
      */
     public @NonNull NetworkCapabilities setCapability(@NetCapability int capability,
             boolean value) {
@@ -757,7 +762,7 @@
 
     /**
      * Adds the given transport type to this {@code NetworkCapability} instance.
-     * Multiple transports may be applied sequentially.  Note that when searching
+     * Multiple transports may be applied.  Note that when searching
      * for a network to satisfy a request, any listed in the request will satisfy the request.
      * For example {@code TRANSPORT_WIFI} and {@code TRANSPORT_ETHERNET} added to a
      * {@code NetworkCapabilities} would cause either a Wi-Fi network or an Ethernet network
@@ -766,6 +771,7 @@
      *
      * @param transportType the transport type to be added.
      * @return This NetworkCapabilities instance, to facilitate chaining.
+     * @hide
      */
     public @NonNull NetworkCapabilities addTransportType(@Transport int transportType) {
         checkValidTransportType(transportType);
@@ -878,6 +884,7 @@
 
     /**
      * Set the UID of the owner app.
+     * @hide
      */
     public @NonNull NetworkCapabilities setOwnerUid(final int uid) {
         mOwnerUid = uid;
@@ -895,6 +902,8 @@
      *   <li>The user's location toggle is on
      * </ol>
      *
+     * Instances of NetworkCapabilities sent to apps without the appropriate permissions will
+     * have this field cleared out.
      */
     public int getOwnerUid() {
         return mOwnerUid;
@@ -933,7 +942,6 @@
      * @hide
      */
     @NonNull
-    @SystemApi
     public NetworkCapabilities setAdministratorUids(@NonNull final int[] administratorUids) {
         mAdministratorUids = Arrays.copyOf(administratorUids, administratorUids.length);
         return this;
@@ -947,6 +955,7 @@
      */
     @NonNull
     @SystemApi
+    @TestApi
     public int[] getAdministratorUids() {
         return Arrays.copyOf(mAdministratorUids, mAdministratorUids.length);
     }
@@ -969,15 +978,10 @@
      * Sets the upstream bandwidth for this network in Kbps.  This always only refers to
      * the estimated first hop transport bandwidth.
      * <p>
-     * Note that when used to request a network, this specifies the minimum acceptable.
-     * When received as the state of an existing network this specifies the typical
-     * first hop bandwidth expected.  This is never measured, but rather is inferred
-     * from technology type and other link parameters.  It could be used to differentiate
-     * between very slow 1xRTT cellular links and other faster networks or even between
-     * 802.11b vs 802.11AC wifi technologies.  It should not be used to differentiate between
-     * fast backhauls and slow backhauls.
+     * {@see Builder#setLinkUpstreamBandwidthKbps}
      *
      * @param upKbps the estimated first hop upstream (device to network) bandwidth.
+     * @hide
      */
     public @NonNull NetworkCapabilities setLinkUpstreamBandwidthKbps(int upKbps) {
         mLinkUpBandwidthKbps = upKbps;
@@ -998,15 +1002,10 @@
      * Sets the downstream bandwidth for this network in Kbps.  This always only refers to
      * the estimated first hop transport bandwidth.
      * <p>
-     * Note that when used to request a network, this specifies the minimum acceptable.
-     * When received as the state of an existing network this specifies the typical
-     * first hop bandwidth expected.  This is never measured, but rather is inferred
-     * from technology type and other link parameters.  It could be used to differentiate
-     * between very slow 1xRTT cellular links and other faster networks or even between
-     * 802.11b vs 802.11AC wifi technologies.  It should not be used to differentiate between
-     * fast backhauls and slow backhauls.
+     * {@see Builder#setLinkUpstreamBandwidthKbps}
      *
      * @param downKbps the estimated first hop downstream (network to device) bandwidth.
+     * @hide
      */
     public @NonNull NetworkCapabilities setLinkDownstreamBandwidthKbps(int downKbps) {
         mLinkDownBandwidthKbps = downKbps;
@@ -1065,6 +1064,7 @@
      * @param networkSpecifier A concrete, parcelable framework class that extends
      *                         NetworkSpecifier.
      * @return This NetworkCapabilities instance, to facilitate chaining.
+     * @hide
      */
     public @NonNull NetworkCapabilities setNetworkSpecifier(
             @NonNull NetworkSpecifier networkSpecifier) {
@@ -1086,7 +1086,6 @@
      * @return This NetworkCapabilities instance, to facilitate chaining.
      * @hide
      */
-    @SystemApi
     public @NonNull NetworkCapabilities setTransportInfo(@NonNull TransportInfo transportInfo) {
         mTransportInfo = transportInfo;
         return this;
@@ -1096,7 +1095,7 @@
      * Gets the optional bearer specific network specifier. May be {@code null} if not set.
      *
      * @return The optional {@link NetworkSpecifier} specifying the bearer specific network
-     *         specifier or {@code null}. See {@link #setNetworkSpecifier}.
+     *         specifier or {@code null}.
      */
     public @Nullable NetworkSpecifier getNetworkSpecifier() {
         return mNetworkSpecifier;
@@ -1166,6 +1165,7 @@
      * effect when requesting a callback.
      *
      * @param signalStrength the bearer-specific signal strength.
+     * @hide
      */
     public @NonNull NetworkCapabilities setSignalStrength(int signalStrength) {
         mSignalStrength = signalStrength;
@@ -1392,7 +1392,6 @@
      * Sets the SSID of this network.
      * @hide
      */
-    @SystemApi
     public @NonNull NetworkCapabilities setSSID(@Nullable String ssid) {
         mSSID = ssid;
         return this;
@@ -1403,7 +1402,8 @@
      * @hide
      */
     @SystemApi
-    public @Nullable String getSSID() {
+    @TestApi
+    public @Nullable String getSsid() {
         return mSSID;
     }
 
@@ -1883,25 +1883,32 @@
     }
 
     /**
-     * Set the uid of the app making the request.
+     * Set the UID of the app making the request.
      *
-     * Note: This works only for {@link NetworkAgent} instances. Any capabilities passed in
-     * via the public {@link ConnectivityManager} API's will have this field overwritten.
+     * For instances of NetworkCapabilities representing a request, sets the
+     * UID of the app making the request. For a network created by the system,
+     * sets the UID of the only app whose requests can match this network.
+     * This can be set to {@link Process#INVALID_UID} if there is no such app,
+     * or if this instance of NetworkCapabilities is about to be sent to a
+     * party that should not learn about this.
      *
      * @param uid UID of the app.
      * @hide
      */
-    @SystemApi
     public @NonNull NetworkCapabilities setRequestorUid(int uid) {
         mRequestorUid = uid;
         return this;
     }
 
     /**
-     * @return the uid of the app making the request.
+     * Returns the UID of the app making the request.
      *
-     * Note: This could return {@link Process#INVALID_UID} if the {@link NetworkRequest}
-     * object was not obtained from {@link ConnectivityManager}.
+     * For a NetworkRequest being made by an app, contains the app's UID. For a network
+     * created by the system, contains the UID of the only app whose requests can match
+     * this network, or {@link Process#INVALID_UID} if none or if the
+     * caller does not have permission to learn about this.
+     *
+     * @return the uid of the app making the request.
      * @hide
      */
     public int getRequestorUid() {
@@ -1911,23 +1918,29 @@
     /**
      * Set the package name of the app making the request.
      *
-     * Note: This works only for {@link NetworkAgent} instances. Any capabilities passed in
-     * via the public {@link ConnectivityManager} API's will have this field overwritten.
+     * For instances of NetworkCapabilities representing a request, sets the
+     * package name of the app making the request. For a network created by the system,
+     * sets the package name of the only app whose requests can match this network.
+     * This can be set to null if there is no such app, or if this instance of
+     * NetworkCapabilities is about to be sent to a party that should not learn about this.
      *
      * @param packageName package name of the app.
      * @hide
      */
-    @SystemApi
     public @NonNull NetworkCapabilities setRequestorPackageName(@NonNull String packageName) {
         mRequestorPackageName = packageName;
         return this;
     }
 
     /**
-     * @return the package name of the app making the request.
+     * Returns the package name of the app making the request.
      *
-     * Note: This could return {@code null} if the {@link NetworkRequest} object was not obtained
-     * from {@link ConnectivityManager}.
+     * For a NetworkRequest being made by an app, contains the app's package name. For a
+     * network created by the system, contains the package name of the only app whose
+     * requests can match this network, or null if none or if the caller does not have
+     * permission to learn about this.
+     *
+     * @return the package name of the app making the request.
      * @hide
      */
     @Nullable
@@ -1936,9 +1949,9 @@
     }
 
     /**
-     * Set the uid and package name of the app making the request.
+     * Set the uid and package name of the app causing this network to exist.
      *
-     * Note: This is intended to be only invoked from within connectivitiy service.
+     * {@see #setRequestorUid} and {@link #setRequestorPackageName}
      *
      * @param uid UID of the app.
      * @param packageName package name of the app.
@@ -1997,4 +2010,316 @@
         return mRequestorUid == nc.mRequestorUid
                 && TextUtils.equals(mRequestorPackageName, nc.mRequestorPackageName);
     }
+
+    /**
+     * Builder class for NetworkCapabilities.
+     *
+     * This class is mainly for for {@link NetworkAgent} instances to use. Many fields in
+     * the built class require holding a signature permission to use - mostly
+     * {@link android.Manifest.permission.NETWORK_FACTORY}, but refer to the specific
+     * description of each setter. As this class lives entirely in app space it does not
+     * enforce these restrictions itself but the system server clears out the relevant
+     * fields when receiving a NetworkCapabilities object from a caller without the
+     * appropriate permission.
+     *
+     * Apps don't use this builder directly. Instead, they use {@link NetworkRequest} via
+     * its builder object.
+     *
+     * @hide
+     */
+    @SystemApi
+    @TestApi
+    public static class Builder {
+        private final NetworkCapabilities mCaps;
+
+        /**
+         * Creates a new Builder to construct NetworkCapabilities objects.
+         */
+        public Builder() {
+            mCaps = new NetworkCapabilities();
+        }
+
+        /**
+         * Creates a new Builder of NetworkCapabilities from an existing instance.
+         */
+        public Builder(@NonNull final NetworkCapabilities nc) {
+            Objects.requireNonNull(nc);
+            mCaps = new NetworkCapabilities(nc);
+        }
+
+        /**
+         * Adds the given transport type.
+         *
+         * Multiple transports may be added. Note that when searching for a network to satisfy a
+         * request, satisfying any of the transports listed in the request will satisfy the request.
+         * For example {@code TRANSPORT_WIFI} and {@code TRANSPORT_ETHERNET} added to a
+         * {@code NetworkCapabilities} would cause either a Wi-Fi network or an Ethernet network
+         * to be selected. This is logically different than
+         * {@code NetworkCapabilities.NET_CAPABILITY_*}.
+         *
+         * @param transportType the transport type to be added or removed.
+         * @return this builder
+         */
+        @NonNull
+        public Builder addTransportType(@Transport int transportType) {
+            checkValidTransportType(transportType);
+            mCaps.addTransportType(transportType);
+            return this;
+        }
+
+        /**
+         * Removes the given transport type.
+         *
+         * {@see #addTransportType}.
+         *
+         * @param transportType the transport type to be added or removed.
+         * @return this builder
+         */
+        @NonNull
+        public Builder removeTransportType(@Transport int transportType) {
+            checkValidTransportType(transportType);
+            mCaps.removeTransportType(transportType);
+            return this;
+        }
+
+        /**
+         * Adds the given capability.
+         *
+         * @param capability the capability
+         * @return this builder
+         */
+        @NonNull
+        public Builder addCapability(@NetCapability final int capability) {
+            mCaps.setCapability(capability, true);
+            return this;
+        }
+
+        /**
+         * Removes the given capability.
+         *
+         * @param capability the capability
+         * @return this builder
+         */
+        @NonNull
+        public Builder removeCapability(@NetCapability final int capability) {
+            mCaps.setCapability(capability, false);
+            return this;
+        }
+
+        /**
+         * Sets the owner UID.
+         *
+         * The default value is {@link Process#INVALID_UID}. Pass this value to reset.
+         *
+         * Note: for security the system will clear out this field when received from a
+         * non-privileged source.
+         *
+         * @param ownerUid the owner UID
+         * @return this builder
+         */
+        @NonNull
+        @RequiresPermission(android.Manifest.permission.NETWORK_FACTORY)
+        public Builder setOwnerUid(final int ownerUid) {
+            mCaps.setOwnerUid(ownerUid);
+            return this;
+        }
+
+        /**
+         * Sets the list of UIDs that are administrators of this network.
+         *
+         * <p>UIDs included in administratorUids gain administrator privileges over this
+         * Network. Examples of UIDs that should be included in administratorUids are:
+         * <ul>
+         *     <li>Carrier apps with privileges for the relevant subscription
+         *     <li>Active VPN apps
+         *     <li>Other application groups with a particular Network-related role
+         * </ul>
+         *
+         * <p>In general, user-supplied networks (such as WiFi networks) do not have
+         * administrators.
+         *
+         * <p>An app is granted owner privileges over Networks that it supplies. The owner
+         * UID MUST always be included in administratorUids.
+         *
+         * The default value is the empty array. Pass an empty array to reset.
+         *
+         * Note: for security the system will clear out this field when received from a
+         * non-privileged source, such as an app using reflection to call this or
+         * mutate the member in the built object.
+         *
+         * @param administratorUids the UIDs to be set as administrators of this Network.
+         * @return this builder
+         */
+        @NonNull
+        @RequiresPermission(android.Manifest.permission.NETWORK_FACTORY)
+        public Builder setAdministratorUids(@NonNull final int[] administratorUids) {
+            Objects.requireNonNull(administratorUids);
+            mCaps.setAdministratorUids(administratorUids);
+            return this;
+        }
+
+        /**
+         * Sets the upstream bandwidth of the link.
+         *
+         * Sets the upstream bandwidth for this network in Kbps. This always only refers to
+         * the estimated first hop transport bandwidth.
+         * <p>
+         * Note that when used to request a network, this specifies the minimum acceptable.
+         * When received as the state of an existing network this specifies the typical
+         * first hop bandwidth expected. This is never measured, but rather is inferred
+         * from technology type and other link parameters. It could be used to differentiate
+         * between very slow 1xRTT cellular links and other faster networks or even between
+         * 802.11b vs 802.11AC wifi technologies. It should not be used to differentiate between
+         * fast backhauls and slow backhauls.
+         *
+         * @param upKbps the estimated first hop upstream (device to network) bandwidth.
+         * @return this builder
+         */
+        @NonNull
+        public Builder setLinkUpstreamBandwidthKbps(final int upKbps) {
+            mCaps.setLinkUpstreamBandwidthKbps(upKbps);
+            return this;
+        }
+
+        /**
+         * Sets the downstream bandwidth for this network in Kbps. This always only refers to
+         * the estimated first hop transport bandwidth.
+         * <p>
+         * Note that when used to request a network, this specifies the minimum acceptable.
+         * When received as the state of an existing network this specifies the typical
+         * first hop bandwidth expected. This is never measured, but rather is inferred
+         * from technology type and other link parameters. It could be used to differentiate
+         * between very slow 1xRTT cellular links and other faster networks or even between
+         * 802.11b vs 802.11AC wifi technologies. It should not be used to differentiate between
+         * fast backhauls and slow backhauls.
+         *
+         * @param downKbps the estimated first hop downstream (network to device) bandwidth.
+         * @return this builder
+         */
+        @NonNull
+        public Builder setLinkDownstreamBandwidthKbps(final int downKbps) {
+            mCaps.setLinkDownstreamBandwidthKbps(downKbps);
+            return this;
+        }
+
+        /**
+         * Sets the optional bearer specific network specifier.
+         * This has no meaning if a single transport is also not specified, so calling
+         * this without a single transport set will generate an exception, as will
+         * subsequently adding or removing transports after this is set.
+         * </p>
+         *
+         * @param specifier a concrete, parcelable framework class that extends NetworkSpecifier,
+         *        or null to clear it.
+         * @return this builder
+         */
+        @NonNull
+        public Builder setNetworkSpecifier(@Nullable final NetworkSpecifier specifier) {
+            mCaps.setNetworkSpecifier(specifier);
+            return this;
+        }
+
+        /**
+         * Sets the optional transport specific information.
+         *
+         * @param info A concrete, parcelable framework class that extends {@link TransportInfo},
+         *             or null to clear it.
+         * @return this builder
+         */
+        @NonNull
+        public Builder setTransportInfo(@Nullable final TransportInfo info) {
+            mCaps.setTransportInfo(info);
+            return this;
+        }
+
+        /**
+         * Sets the signal strength. This is a signed integer, with higher values indicating a
+         * stronger signal. The exact units are bearer-dependent. For example, Wi-Fi uses the
+         * same RSSI units reported by wifi code.
+         * <p>
+         * Note that when used to register a network callback, this specifies the minimum
+         * acceptable signal strength. When received as the state of an existing network it
+         * specifies the current value. A value of code SIGNAL_STRENGTH_UNSPECIFIED} means
+         * no value when received and has no effect when requesting a callback.
+         *
+         * Note: for security the system will throw if it receives a NetworkRequest where
+         * the underlying NetworkCapabilities has this member set from a source that does
+         * not hold the {@link android.Manifest.permission.NETWORK_SIGNAL_STRENGTH_WAKEUP}
+         * permission. Apps with this permission can use this indirectly through
+         * {@link android.net.NetworkRequest}.
+         *
+         * @param signalStrength the bearer-specific signal strength.
+         * @return this builder
+         */
+        @NonNull
+        @RequiresPermission(android.Manifest.permission.NETWORK_SIGNAL_STRENGTH_WAKEUP)
+        public Builder setSignalStrength(final int signalStrength) {
+            mCaps.setSignalStrength(signalStrength);
+            return this;
+        }
+
+        /**
+         * Sets the SSID of this network.
+         *
+         * Note: for security the system will clear out this field when received from a
+         * non-privileged source, like an app using reflection to set this.
+         *
+         * @param ssid the SSID, or null to clear it.
+         * @return this builder
+         */
+        @NonNull
+        @RequiresPermission(android.Manifest.permission.NETWORK_FACTORY)
+        public Builder setSsid(@Nullable final String ssid) {
+            mCaps.setSSID(ssid);
+            return this;
+        }
+
+        /**
+         * Set the uid of the app causing this network to exist.
+         *
+         * Note: for security the system will clear out this field when received from a
+         * non-privileged source.
+         *
+         * @param uid UID of the app.
+         * @return this builder
+         */
+        @NonNull
+        @RequiresPermission(android.Manifest.permission.NETWORK_FACTORY)
+        public Builder setRequestorUid(final int uid) {
+            mCaps.setRequestorUid(uid);
+            return this;
+        }
+
+        /**
+         * Set the package name of the app causing this network to exist.
+         *
+         * Note: for security the system will clear out this field when received from a
+         * non-privileged source.
+         *
+         * @param packageName package name of the app, or null to clear it.
+         * @return this builder
+         */
+        @NonNull
+        @RequiresPermission(android.Manifest.permission.NETWORK_FACTORY)
+        public Builder setRequestorPackageName(@Nullable final String packageName) {
+            mCaps.setRequestorPackageName(packageName);
+            return this;
+        }
+
+        /**
+         * Builds the instance of the capabilities.
+         *
+         * @return the built instance of NetworkCapabilities.
+         */
+        @NonNull
+        public NetworkCapabilities build() {
+            if (mCaps.getOwnerUid() != Process.INVALID_UID) {
+                if (!ArrayUtils.contains(mCaps.getAdministratorUids(), mCaps.getOwnerUid())) {
+                    throw new IllegalStateException("The owner UID must be included in "
+                            + " administrator UIDs.");
+                }
+            }
+            return new NetworkCapabilities(mCaps);
+        }
+    }
 }
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 1309740..1484fe7 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -49,8 +49,6 @@
 import static android.system.OsConstants.IPPROTO_TCP;
 import static android.system.OsConstants.IPPROTO_UDP;
 
-import static com.android.internal.util.Preconditions.checkNotNull;
-
 import static java.util.Map.Entry;
 
 import android.Manifest;
@@ -65,6 +63,7 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.content.pm.PackageManager;
 import android.content.res.Configuration;
 import android.database.ContentObserver;
 import android.net.CaptivePortal;
@@ -929,7 +928,7 @@
          * @see IpConnectivityMetrics.Logger
          */
         public IpConnectivityMetrics.Logger getMetricsLogger() {
-            return checkNotNull(LocalServices.getService(IpConnectivityMetrics.Logger.class),
+            return Objects.requireNonNull(LocalServices.getService(IpConnectivityMetrics.Logger.class),
                     "no IpConnectivityMetrics service");
         }
 
@@ -958,10 +957,10 @@
             IDnsResolver dnsresolver, IpConnectivityLog logger, INetd netd, Dependencies deps) {
         if (DBG) log("ConnectivityService starting up");
 
-        mDeps = checkNotNull(deps, "missing Dependencies");
+        mDeps = Objects.requireNonNull(deps, "missing Dependencies");
         mSystemProperties = mDeps.getSystemProperties();
         mNetIdManager = mDeps.makeNetIdManager();
-        mContext = checkNotNull(context, "missing Context");
+        mContext = Objects.requireNonNull(context, "missing Context");
 
         mMetricsLog = logger;
         mDefaultRequest = createDefaultInternetRequestForTransport(-1, NetworkRequest.Type.REQUEST);
@@ -991,13 +990,13 @@
 
         mLingerDelayMs = mSystemProperties.getInt(LINGER_DELAY_PROPERTY, DEFAULT_LINGER_DELAY_MS);
 
-        mNMS = checkNotNull(netManager, "missing INetworkManagementService");
-        mStatsService = checkNotNull(statsService, "missing INetworkStatsService");
-        mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager");
-        mPolicyManagerInternal = checkNotNull(
+        mNMS = Objects.requireNonNull(netManager, "missing INetworkManagementService");
+        mStatsService = Objects.requireNonNull(statsService, "missing INetworkStatsService");
+        mPolicyManager = Objects.requireNonNull(policyManager, "missing INetworkPolicyManager");
+        mPolicyManagerInternal = Objects.requireNonNull(
                 LocalServices.getService(NetworkPolicyManagerInternal.class),
                 "missing NetworkPolicyManagerInternal");
-        mDnsResolver = checkNotNull(dnsresolver, "missing IDnsResolver");
+        mDnsResolver = Objects.requireNonNull(dnsresolver, "missing IDnsResolver");
         mProxyTracker = mDeps.makeProxyTracker(mContext, mHandler);
 
         mNetd = netd;
@@ -5333,7 +5332,7 @@
     // specific SSID/SignalStrength, or the calling app has permission to do so.
     private void ensureSufficientPermissionsForRequest(NetworkCapabilities nc,
             int callerPid, int callerUid, String callerPackageName) {
-        if (null != nc.getSSID() && !checkSettingsPermission(callerPid, callerUid)) {
+        if (null != nc.getSsid() && !checkSettingsPermission(callerPid, callerUid)) {
             throw new SecurityException("Insufficient permissions to request a specific SSID");
         }
 
@@ -5398,12 +5397,25 @@
         }
     }
 
+    private boolean checkUnsupportedStartingFrom(int version, String callingPackageName) {
+        final PackageManager pm = mContext.getPackageManager();
+        final int userId = UserHandle.getCallingUserId();
+        try {
+            final int callingVersion = pm.getApplicationInfoAsUser(
+                    callingPackageName, 0 /* flags */, userId).targetSdkVersion;
+            if (callingVersion < version) return false;
+        } catch (PackageManager.NameNotFoundException e) { }
+        return true;
+    }
+
     @Override
     public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities,
             Messenger messenger, int timeoutMs, IBinder binder, int legacyType,
             @NonNull String callingPackageName) {
         if (legacyType != TYPE_NONE && !checkNetworkStackPermission()) {
-            throw new SecurityException("Insufficient permissions to specify legacy type");
+            if (checkUnsupportedStartingFrom(Build.VERSION_CODES.M, callingPackageName)) {
+                throw new SecurityException("Insufficient permissions to specify legacy type");
+            }
         }
         final int callingUid = Binder.getCallingUid();
         final NetworkRequest.Type type = (networkCapabilities == null)
@@ -5508,7 +5520,7 @@
     @Override
     public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities,
             PendingIntent operation, @NonNull String callingPackageName) {
-        checkNotNull(operation, "PendingIntent cannot be null.");
+        Objects.requireNonNull(operation, "PendingIntent cannot be null.");
         final int callingUid = Binder.getCallingUid();
         networkCapabilities = new NetworkCapabilities(networkCapabilities);
         enforceNetworkRequestPermissions(networkCapabilities);
@@ -5537,7 +5549,7 @@
 
     @Override
     public void releasePendingNetworkRequest(PendingIntent operation) {
-        checkNotNull(operation, "PendingIntent cannot be null.");
+        Objects.requireNonNull(operation, "PendingIntent cannot be null.");
         mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT,
                 getCallingUid(), 0, operation));
     }
@@ -5596,7 +5608,7 @@
     @Override
     public void pendingListenForNetwork(NetworkCapabilities networkCapabilities,
             PendingIntent operation, @NonNull String callingPackageName) {
-        checkNotNull(operation, "PendingIntent cannot be null.");
+        Objects.requireNonNull(operation, "PendingIntent cannot be null.");
         final int callingUid = Binder.getCallingUid();
         if (!hasWifiNetworkListenPermission(networkCapabilities)) {
             enforceAccessPermission();
@@ -5805,7 +5817,7 @@
         nai.getAndSetNetworkCapabilities(mixInCapabilities(nai, nc));
         final String extraInfo = networkInfo.getExtraInfo();
         final String name = TextUtils.isEmpty(extraInfo)
-                ? nai.networkCapabilities.getSSID() : extraInfo;
+                ? nai.networkCapabilities.getSsid() : extraInfo;
         if (DBG) log("registerNetworkAgent " + nai);
         final long token = Binder.clearCallingIdentity();
         try {
diff --git a/services/core/java/com/android/server/connectivity/KeepaliveTracker.java b/services/core/java/com/android/server/connectivity/KeepaliveTracker.java
index 5059a48..7c8fb5a 100644
--- a/services/core/java/com/android/server/connectivity/KeepaliveTracker.java
+++ b/services/core/java/com/android/server/connectivity/KeepaliveTracker.java
@@ -220,9 +220,9 @@
                     + " network=" + mNai.network
                     + " startedState=" + startedStateString(mStartedState)
                     + " "
-                    + IpUtils.addressAndPortToString(mPacket.srcAddress, mPacket.srcPort)
+                    + IpUtils.addressAndPortToString(mPacket.getSrcAddress(), mPacket.getSrcPort())
                     + "->"
-                    + IpUtils.addressAndPortToString(mPacket.dstAddress, mPacket.dstPort)
+                    + IpUtils.addressAndPortToString(mPacket.getDstAddress(), mPacket.getDstPort())
                     + " interval=" + mInterval
                     + " uid=" + mUid + " pid=" + mPid + " privileged=" + mPrivileged
                     + " packetData=" + HexDump.toHexString(mPacket.getPacket())
@@ -250,7 +250,7 @@
         private int checkSourceAddress() {
             // Check that we have the source address.
             for (InetAddress address : mNai.linkProperties.getAddresses()) {
-                if (address.equals(mPacket.srcAddress)) {
+                if (address.equals(mPacket.getSrcAddress())) {
                     return SUCCESS;
                 }
             }
@@ -619,7 +619,7 @@
             packet = NattKeepalivePacketData.nattKeepalivePacket(
                     srcAddress, srcPort, dstAddress, NATT_PORT);
         } catch (InvalidPacketException e) {
-            notifyErrorCallback(cb, e.error);
+            notifyErrorCallback(cb, e.getError());
             return;
         }
         KeepaliveInfo ki = null;
@@ -662,7 +662,7 @@
             notifyErrorCallback(cb, e.error);
             return;
         } catch (InvalidPacketException e) {
-            notifyErrorCallback(cb, e.error);
+            notifyErrorCallback(cb, e.getError());
             return;
         }
         KeepaliveInfo ki = null;
diff --git a/services/core/java/com/android/server/connectivity/NetworkNotificationManager.java b/services/core/java/com/android/server/connectivity/NetworkNotificationManager.java
index 0925de8..34b0aa2 100644
--- a/services/core/java/com/android/server/connectivity/NetworkNotificationManager.java
+++ b/services/core/java/com/android/server/connectivity/NetworkNotificationManager.java
@@ -150,7 +150,7 @@
         if (nai != null) {
             transportType = approximateTransportType(nai);
             final String extraInfo = nai.networkInfo.getExtraInfo();
-            name = TextUtils.isEmpty(extraInfo) ? nai.networkCapabilities.getSSID() : extraInfo;
+            name = TextUtils.isEmpty(extraInfo) ? nai.networkCapabilities.getSsid() : extraInfo;
             // Only notify for Internet-capable networks.
             if (!nai.networkCapabilities.hasCapability(NET_CAPABILITY_INTERNET)) return;
         } else {
@@ -183,14 +183,14 @@
         int icon = getIcon(transportType);
         if (notifyType == NotificationType.NO_INTERNET && transportType == TRANSPORT_WIFI) {
             title = r.getString(R.string.wifi_no_internet,
-                    WifiInfo.sanitizeSsid(nai.networkCapabilities.getSSID()));
+                    WifiInfo.sanitizeSsid(nai.networkCapabilities.getSsid()));
             details = r.getString(R.string.wifi_no_internet_detailed);
         } else if (notifyType == NotificationType.PRIVATE_DNS_BROKEN) {
             if (transportType == TRANSPORT_CELLULAR) {
                 title = r.getString(R.string.mobile_no_internet);
             } else if (transportType == TRANSPORT_WIFI) {
                 title = r.getString(R.string.wifi_no_internet,
-                        WifiInfo.sanitizeSsid(nai.networkCapabilities.getSSID()));
+                        WifiInfo.sanitizeSsid(nai.networkCapabilities.getSsid()));
             } else {
                 title = r.getString(R.string.other_networks_no_internet);
             }
@@ -198,19 +198,19 @@
         } else if (notifyType == NotificationType.PARTIAL_CONNECTIVITY
                 && transportType == TRANSPORT_WIFI) {
             title = r.getString(R.string.network_partial_connectivity,
-                    WifiInfo.sanitizeSsid(nai.networkCapabilities.getSSID()));
+                    WifiInfo.sanitizeSsid(nai.networkCapabilities.getSsid()));
             details = r.getString(R.string.network_partial_connectivity_detailed);
         } else if (notifyType == NotificationType.LOST_INTERNET &&
                 transportType == TRANSPORT_WIFI) {
             title = r.getString(R.string.wifi_no_internet,
-                    WifiInfo.sanitizeSsid(nai.networkCapabilities.getSSID()));
+                    WifiInfo.sanitizeSsid(nai.networkCapabilities.getSsid()));
             details = r.getString(R.string.wifi_no_internet_detailed);
         } else if (notifyType == NotificationType.SIGN_IN) {
             switch (transportType) {
                 case TRANSPORT_WIFI:
                     title = r.getString(R.string.wifi_available_sign_in, 0);
                     details = r.getString(R.string.network_available_sign_in_detailed,
-                            WifiInfo.sanitizeSsid(nai.networkCapabilities.getSSID()));
+                            WifiInfo.sanitizeSsid(nai.networkCapabilities.getSsid()));
                     break;
                 case TRANSPORT_CELLULAR:
                     title = r.getString(R.string.network_available_sign_in, 0);
diff --git a/tests/net/common/java/android/net/LinkPropertiesTest.java b/tests/net/common/java/android/net/LinkPropertiesTest.java
index f163512..8de27e8 100644
--- a/tests/net/common/java/android/net/LinkPropertiesTest.java
+++ b/tests/net/common/java/android/net/LinkPropertiesTest.java
@@ -486,6 +486,8 @@
         assertEquals(1, rmnet0.getLinkAddresses().size());
         assertEquals(1, rmnet0.getAllAddresses().size());
         assertEquals(1, rmnet0.getAllLinkAddresses().size());
+        assertEquals(1, rmnet0.getAllInterfaceNames().size());
+        assertEquals("rmnet0", rmnet0.getAllInterfaceNames().get(0));
 
         rmnet0.addStackedLink(clat4);
         assertEquals(1, rmnet0.getStackedLinks().size());
@@ -493,6 +495,9 @@
         assertEquals(1, rmnet0.getLinkAddresses().size());
         assertEquals(2, rmnet0.getAllAddresses().size());
         assertEquals(2, rmnet0.getAllLinkAddresses().size());
+        assertEquals(2, rmnet0.getAllInterfaceNames().size());
+        assertEquals("rmnet0", rmnet0.getAllInterfaceNames().get(0));
+        assertEquals("clat4", rmnet0.getAllInterfaceNames().get(1));
 
         rmnet0.addStackedLink(clat4);
         assertEquals(1, rmnet0.getStackedLinks().size());
@@ -500,6 +505,9 @@
         assertEquals(1, rmnet0.getLinkAddresses().size());
         assertEquals(2, rmnet0.getAllAddresses().size());
         assertEquals(2, rmnet0.getAllLinkAddresses().size());
+        assertEquals(2, rmnet0.getAllInterfaceNames().size());
+        assertEquals("rmnet0", rmnet0.getAllInterfaceNames().get(0));
+        assertEquals("clat4", rmnet0.getAllInterfaceNames().get(1));
 
         assertEquals(0, clat4.getStackedLinks().size());
 
@@ -519,6 +527,8 @@
         assertEquals(1, rmnet0.getLinkAddresses().size());
         assertEquals(1, rmnet0.getAllAddresses().size());
         assertEquals(1, rmnet0.getAllLinkAddresses().size());
+        assertEquals(1, rmnet0.getAllInterfaceNames().size());
+        assertEquals("rmnet0", rmnet0.getAllInterfaceNames().get(0));
 
         assertFalse(rmnet0.removeStackedLink("clat4"));
     }
@@ -1203,4 +1213,48 @@
         lp.clear();
         assertNull(lp.getCaptivePortalData());
     }
+
+    private LinkProperties makeIpv4LinkProperties() {
+        final LinkProperties linkProperties = new LinkProperties();
+        linkProperties.setInterfaceName(NAME);
+        linkProperties.addLinkAddress(LINKADDRV4);
+        linkProperties.addDnsServer(DNS1);
+        linkProperties.addRoute(new RouteInfo(GATEWAY1));
+        linkProperties.addRoute(new RouteInfo(GATEWAY2));
+        return linkProperties;
+    }
+
+    private LinkProperties makeIpv6LinkProperties() {
+        final LinkProperties linkProperties = new LinkProperties();
+        linkProperties.setInterfaceName(NAME);
+        linkProperties.addLinkAddress(LINKADDRV6);
+        linkProperties.addDnsServer(DNS6);
+        linkProperties.addRoute(new RouteInfo(GATEWAY61));
+        linkProperties.addRoute(new RouteInfo(GATEWAY62));
+        return linkProperties;
+    }
+
+    @Test
+    public void testHasIpv4DefaultRoute() {
+        final LinkProperties Ipv4 = makeIpv4LinkProperties();
+        assertTrue(Ipv4.hasIpv4DefaultRoute());
+        final LinkProperties Ipv6 = makeIpv6LinkProperties();
+        assertFalse(Ipv6.hasIpv4DefaultRoute());
+    }
+
+    @Test
+    public void testHasIpv4DnsServer() {
+        final LinkProperties Ipv4 = makeIpv4LinkProperties();
+        assertTrue(Ipv4.hasIpv4DnsServer());
+        final LinkProperties Ipv6 = makeIpv6LinkProperties();
+        assertFalse(Ipv6.hasIpv4DnsServer());
+    }
+
+    @Test
+    public void testHasIpv6DnsServer() {
+        final LinkProperties Ipv4 = makeIpv4LinkProperties();
+        assertFalse(Ipv4.hasIpv6DnsServer());
+        final LinkProperties Ipv6 = makeIpv6LinkProperties();
+        assertTrue(Ipv6.hasIpv6DnsServer());
+    }
 }
diff --git a/tests/net/common/java/android/net/MatchAllNetworkSpecifierTest.kt b/tests/net/common/java/android/net/MatchAllNetworkSpecifierTest.kt
new file mode 100644
index 0000000..ef15b66
--- /dev/null
+++ b/tests/net/common/java/android/net/MatchAllNetworkSpecifierTest.kt
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2020 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
+
+import android.net.wifi.aware.DiscoverySession
+import android.net.wifi.aware.PeerHandle
+import android.net.wifi.aware.WifiAwareNetworkSpecifier
+import androidx.test.filters.SmallTest
+import androidx.test.runner.AndroidJUnit4
+
+import com.android.testutils.assertParcelSane
+
+import java.lang.IllegalStateException
+
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.Mockito
+
+@RunWith(AndroidJUnit4::class)
+@SmallTest
+class MatchAllNetworkSpecifierTest {
+    @Test
+    fun testParcel() {
+        assertParcelSane(MatchAllNetworkSpecifier(), 0)
+    }
+
+    @Test(expected = IllegalStateException::class)
+    fun testSatisfiedBy() {
+        val specifier = MatchAllNetworkSpecifier()
+        val discoverySession = Mockito.mock(DiscoverySession::class.java)
+        val peerHandle = Mockito.mock(PeerHandle::class.java)
+        val wifiAwareNetworkSpecifier = WifiAwareNetworkSpecifier.Builder(discoverySession,
+                peerHandle).build()
+        specifier.satisfiedBy(wifiAwareNetworkSpecifier)
+    }
+}
diff --git a/tests/net/common/java/android/net/NetworkCapabilitiesTest.java b/tests/net/common/java/android/net/NetworkCapabilitiesTest.java
index 9fe1883..b2e8c37 100644
--- a/tests/net/common/java/android/net/NetworkCapabilitiesTest.java
+++ b/tests/net/common/java/android/net/NetworkCapabilitiesTest.java
@@ -463,7 +463,7 @@
 
         nc1.setSSID(TEST_SSID);
         nc2.combineCapabilities(nc1);
-        assertTrue(TEST_SSID.equals(nc2.getSSID()));
+        assertTrue(TEST_SSID.equals(nc2.getSsid()));
 
         // Because they now have the same SSID, the following call should not throw
         nc2.combineCapabilities(nc1);
@@ -601,12 +601,12 @@
         // from nc2.
         assertFalse(nc2.hasCapability(NET_CAPABILITY_NOT_ROAMING));
         assertTrue(nc2.hasUnwantedCapability(NET_CAPABILITY_NOT_ROAMING));
-        assertTrue(TEST_SSID.equals(nc2.getSSID()));
+        assertTrue(TEST_SSID.equals(nc2.getSsid()));
 
         nc1.setSSID(DIFFERENT_TEST_SSID);
         nc2.set(nc1);
         assertEquals(nc1, nc2);
-        assertTrue(DIFFERENT_TEST_SSID.equals(nc2.getSSID()));
+        assertTrue(DIFFERENT_TEST_SSID.equals(nc2.getSsid()));
 
         nc1.setUids(uidRange(10, 13));
         nc2.set(nc1);  // Overwrites, as opposed to combineCapabilities
diff --git a/tests/net/java/android/net/TcpKeepalivePacketDataTest.java b/tests/net/java/android/net/TcpKeepalivePacketDataTest.java
index e632aaf..cea8c57 100644
--- a/tests/net/java/android/net/TcpKeepalivePacketDataTest.java
+++ b/tests/net/java/android/net/TcpKeepalivePacketDataTest.java
@@ -66,10 +66,10 @@
             fail("InvalidPacketException: " + e);
         }
 
-        assertEquals(InetAddress.getByAddress(testInfo.srcAddress), resultData.srcAddress);
-        assertEquals(InetAddress.getByAddress(testInfo.dstAddress), resultData.dstAddress);
-        assertEquals(testInfo.srcPort, resultData.srcPort);
-        assertEquals(testInfo.dstPort, resultData.dstPort);
+        assertEquals(InetAddress.getByAddress(testInfo.srcAddress), resultData.getSrcAddress());
+        assertEquals(InetAddress.getByAddress(testInfo.dstAddress), resultData.getDstAddress());
+        assertEquals(testInfo.srcPort, resultData.getSrcPort());
+        assertEquals(testInfo.dstPort, resultData.getDstPort());
         assertEquals(testInfo.seq, resultData.tcpSeq);
         assertEquals(testInfo.ack, resultData.tcpAck);
         assertEquals(testInfo.rcvWnd, resultData.tcpWnd);