PROSAGA码农传奇-智能网关-如何创建和发送PacketOut？

<div class =“post-text”itemprop =“text”>
  <P>
    使用PacketProcessingService，您需要以下内容：
  </p>
   <pre>
    <code>
      NodeConnectorId egress = TABLE_PORT;
TransmitPacketInput input = new TransmitPacketInputBuilder()
                                .setNode(nodeRef(linkDef.srcNodeId))
                                .setEgress(nodeConnectorRef(linkDef.srcNodeId, egress))
                                .setPayload(STUFF)
                                .build();
packetProcessingService.transmitPacket(input);

</code>
  </pre>
  <P>
    使用以下实用程序：
  </p>
   <pre>
    <code>
      // reserved ports
public final static NodeConnectorId INGRESS_PORT = new NodeConnectorId("0xfffffff8");
public final static NodeConnectorId TABLE_PORT = new NodeConnectorId("0xfffffff9");
public final static NodeConnectorId NORMAL_PORT = new NodeConnectorId("0xfffffffa"); // optional functionality
public final static NodeConnectorId FLOOD_PORT = new NodeConnectorId("0xfffffffb"); // optional functionality
public final static NodeConnectorId ALL_PORT = new NodeConnectorId("0xfffffffc");
public final static NodeConnectorId CONTROLLER_PORT = new NodeConnectorId("0xfffffffd");
public final static NodeConnectorId LOCAL_PORT = new NodeConnectorId("0xfffffffe");
public final static NodeConnectorId ANY_PORT = new NodeConnectorId("0xffffffff");

public static final InstanceIdentifier<Nodes> NODES_IID = InstanceIdentifier.builder(Nodes.class).build();

public static InstanceIdentifier<Node> nodeIId(NodeId nodeId) {
    return NODES_IID.child(Node.class, new NodeKey(nodeId));
}

public static NodeRef nodeRef(NodeId nodeId) {
    return new NodeRef(nodeIId(nodeId));
}

public static InstanceIdentifier<NodeConnector> nodeConnectorIId(NodeId nodeId, NodeConnectorId ncId) {
    return NODES_IID.child(Node.class, new NodeKey(nodeId)).child(NodeConnector.class, new NodeConnectorKey(ncId));
}

public static NodeConnectorRef nodeConnectorRef(NodeId nodeId, NodeConnectorId ncId) {
    return new NodeConnectorRef(nodeConnectorIId(nodeId, ncId));
}

</code>
  </pre>
  <P>
    此外，您还可以设置Ingress，它是数据包'来自'的端口，由端口内匹配器使用。
  </p>
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