PacketBuilder (Javadocs [I2P+ 2.13.0+]

java.lang.Object
- net.i2p.router.transport.udp.PacketBuilder

```
class PacketBuilder
extends Object
```
Builder for UDP packets.

Nested Class Summary
Nested Classes
Modifier and Type Class and Description
static class PacketBuilder.Fragment
Class for passing multiple fragments to buildPacket()

Nested Classes
Modifier and Type	Class and Description
`static class`	`PacketBuilder.Fragment` Class for passing multiple fragments to buildPacket()

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`ABSOLUTE_MAX_ACKS` one byte field
`static int`	`DATA_HEADER_SIZE` not including acks.
`static int`	`FRAGMENT_HEADER_SIZE` 4 byte msg ID + 3 byte fragment info
`static int`	`HEADER_SIZE` if no extended options or rekey data, which we don't support = 37
`static int`	`IP_HEADER_SIZE` IPv4 only
`static int`	`IPV6_HEADER_SIZE` IPv6 header size in bytes.
`static int`	`MIN_DATA_PACKET_OVERHEAD` Minimum IPv4 data packet overhead in bytes (74).
`static int`	`MIN_IPV6_DATA_PACKET_OVERHEAD` Minimum IPv6 data packet overhead in bytes (94).
`(package private) static int`	`PRIORITY_HIGH` Higher than all other OutNetMessage priorities, but still droppable, and will be shown in the codel.UDP-Sender.drop.500 stat.
`static int`	`UDP_HEADER_SIZE` Same for IPv4 and IPv6

Method Summary
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - ABSOLUTE_MAX_ACKS
```
public static final int ABSOLUTE_MAX_ACKS
```
    one byte field
    See Also:
    Constant Field Values
  - DATA_HEADER_SIZE
```
public static final int DATA_HEADER_SIZE
```
    not including acks. 46
    See Also:
    Constant Field Values
  - FRAGMENT_HEADER_SIZE
```
public static final int FRAGMENT_HEADER_SIZE
```
    4 byte msg ID + 3 byte fragment info
    See Also:
    Constant Field Values
  - HEADER_SIZE
```
public static final int HEADER_SIZE
```
    if no extended options or rekey data, which we don't support = 37
    See Also:
    Constant Field Values
  - IP_HEADER_SIZE
```
public static final int IP_HEADER_SIZE
```
    IPv4 only
    See Also:
    Constant Field Values
  - IPV6_HEADER_SIZE
```
public static final int IPV6_HEADER_SIZE
```
    IPv6 header size in bytes.
    See Also:
    Constant Field Values
  - MIN_DATA_PACKET_OVERHEAD
```
public static final int MIN_DATA_PACKET_OVERHEAD
```
    Minimum IPv4 data packet overhead in bytes (74).
    See Also:
    Constant Field Values
  - MIN_IPV6_DATA_PACKET_OVERHEAD
```
public static final int MIN_IPV6_DATA_PACKET_OVERHEAD
```
    Minimum IPv6 data packet overhead in bytes (94).
    See Also:
    Constant Field Values
  - PRIORITY_HIGH
```
static final int PRIORITY_HIGH
```
    Higher than all other OutNetMessage priorities, but still droppable, and will be shown in the codel.UDP-Sender.drop.500 stat.
    See Also:
    Constant Field Values
  - UDP_HEADER_SIZE
```
public static final int UDP_HEADER_SIZE
```
    Same for IPv4 and IPv6
    See Also:
    Constant Field Values

Class PacketBuilder

Nested Class Summary

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

ABSOLUTE_MAX_ACKS

DATA_HEADER_SIZE

FRAGMENT_HEADER_SIZE

HEADER_SIZE

IP_HEADER_SIZE

IPV6_HEADER_SIZE

MIN_DATA_PACKET_OVERHEAD

MIN_IPV6_DATA_PACKET_OVERHEAD

PRIORITY_HIGH

UDP_HEADER_SIZE