Package jpcap
Class JpcapSender
- java.lang.Object
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- jpcap.JpcapSender
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public class JpcapSender extends java.lang.Object
This class is used to send a packet.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description void
close()
Closes the interface.static JpcapSender
openDevice(NetworkInterface device)
Initializes a network interface for sending a packet, and returns an instance of this class.static JpcapSender
openRawSocket()
Deprecated.void
sendPacket(Packet packet)
Sends a packet.
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Method Detail
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openDevice
public static JpcapSender openDevice(NetworkInterface device) throws java.io.IOException
Initializes a network interface for sending a packet, and returns an instance of this class.- Parameters:
device
- Interface for sending a packet- Returns:
- intstance of this class (JpcapSender)
- Throws:
IOException
- Raised when initialization of the interface failed
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openRawSocket
@Deprecated public static JpcapSender openRawSocket() throws java.io.IOException
Deprecated.Open a raw IP socket to send a packet.
When sending a packet via a raw socket, the datalink header of the packet is ignored (= automatically generated by OS).Note: the implementation and behavior of a raw socket may vary in different OS. Also, you can only open one raw socket at a time.
- Returns:
- intstance of this class (JpcapSender)
- Throws:
IOException
- Raised when initialization of the interface failed
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close
public void close()
Closes the interface.
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sendPacket
public void sendPacket(Packet packet)
Sends a packet.If this JpcapSender instance was created by openDevice(), you need to set the Datalink layer's header (e.g., Ethernet header) of the packet.
If this JpcapSender instance was created by openRawSocket(), you can only send IP packets, but you may not need to set the Datalink layer's header of the IP packets you want to send.
Note: the implementation and behavior of a raw socket may vary in different OS. For example, in Windows 2000/XP, you need to manually set the datalink/IP headers of a packet.- Parameters:
packet
- Packet to be sent
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