Examples of org.dhcp4java.DHCPPacket.serialize()

org.dhcp4java.DHCPPacket.serialize()
Converts the object to a byte array ready to be sent on the wire.
Default max size of resulting packet is 576, which is the maximum size a client can accept without explicit notice (option XXX) @return a byte array with information from DHCPMessage object. @throws DHCPBadPacketException the datagram would be malformed (too small, too big...)

    // serialize
    @Test
    public void testSerializeLimits() {
      byte[] buf;
      DHCPPacket pac = new DHCPPacket();
      buf = pac.serialize();
      assertEquals(300, buf.length);
      
      pac.setOptionRaw(DHO_HOST_NAME, new byte[255]);
      buf = pac.serialize();
      assertEquals(498, buf.length);

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      DHCPPacket pac = new DHCPPacket();
      buf = pac.serialize();
      assertEquals(300, buf.length);
      
      pac.setOptionRaw(DHO_HOST_NAME, new byte[255]);
      buf = pac.serialize();
      assertEquals(498, buf.length);
      
      buf = pac.serialize(1500, 1500);
      assertEquals(1500, buf.length);
    }

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      pac.setOptionRaw(DHO_HOST_NAME, new byte[255]);
      buf = pac.serialize();
      assertEquals(498, buf.length);
      
      buf = pac.serialize(1500, 1500);
      assertEquals(1500, buf.length);
    }
    @Test (expected=DHCPBadPacketException.class)
    public void testSerializeOptionOver256() {
      DHCPPacket pac = new DHCPPacket();

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    }
    @Test (expected=DHCPBadPacketException.class)
    public void testSerializeOptionOver256() {
      DHCPPacket pac = new DHCPPacket();
      pac.setOptionRaw(DHO_HOST_NAME, new byte[256]);
      pac.serialize();
    }
    @Test (expected=DHCPBadPacketException.class)
    public void testSerializePacketTooBig() {
      DHCPPacket pac = new DHCPPacket();
      pac.setOptionRaw((byte)11, new byte[255]);

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      pac.setOptionRaw((byte)11, new byte[255]);
      pac.setOptionRaw((byte)12, new byte[255]);
      pac.setOptionRaw((byte)13, new byte[255]);
      pac.setOptionRaw((byte)14, new byte[255]);
      pac.setOptionRaw((byte)15, new byte[255]);
      pac.serialize();
    }
    
    // Limit tests for setters/getter
    @Test
    public void testSetCHAddrUnderLimit() {

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      DHCPServletTestServletWithGoodResponse servlet2 = new DHCPServletTestServletWithGoodResponse();
      DHCPPacket pac = new DHCPPacket();
      pac.setDHCPMessageType(DHCPDISCOVER);
      pac.setOp(BOOTREQUEST);
      servlet2.postProcessPassed = false;
      byte[] buf = pac.serialize();
      DatagramPacket udp = new DatagramPacket(buf, buf.length);
      
      servlet2.addressToReturn = null;
      servlet2.portToReturn = 0;
      assertNull(servlet2.serviceDatagram(udp));    // reject is address returned is null

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    public void testDiscover() throws Exception {
      byte[] buf;
      DatagramPacket udp;
      DHCPPacket pac = new DHCPPacket();
      pac.setOp(BOOTREQUEST);
      buf = pac.serialize();
      udp = new DatagramPacket(buf, buf.length);
      udp.setAddress(InetAddress.getByName(SERVER_ADDR));
      udp.setPort(SERVER_PORT);
      socket.send(udp);
      udp = new DatagramPacket(new byte[1500], 1500);

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