class Pcap::Capture

• Pcap::Capture
• Reference
• Object

Included Modules

• Iterator(Pcap::Packet)

Defined in:

pcap/capture.cr

Constant Summary

DEFAULT_NETMASK = 4294967040_u32

DEFAULT_OPTIMIZE = 1

DEFAULT_PROMISC = 1

DEFAULT_SNAPLEN = 1500

DEFAULT_TIMEOUT_MS = 1000

Constructors

• .new(pcap : LibPcap::PcapT)

Class Method Summary

• .open_dead(linktype : Int32 = DEFAULT_LINKTYPE, snaplen : Int32 = DEFAULT_SNAPLEN)
• .open_live(device : String, snaplen : Int32 = DEFAULT_SNAPLEN, promisc : Int32 = DEFAULT_PROMISC, timeout_ms : Int32 = DEFAULT_TIMEOUT_MS)
• .open_offline(file : String)

Instance Method Summary

• #callback
• #callback=(callback : Pcap::Packet -> _)
• #callback? : Pcap::Packet -> Nil
• #close
• #compile(filter, optimize = DEFAULT_OPTIMIZE, netmask = DEFAULT_NETMASK)
• #get? : Packet | Nil

  reads the next packet, and - trys again if read timeouted - returns Pcap::Packet if exists - returns nil if EOF reached (maybe read in offline mode) - raises Pcap::Error on error

• #loop(count : Int32 = -1, &callback : Pcap::Packet -> )

  calls pcap_loop that fetches all packets in the next buffer, and loop forever.

• #next

  called via iterator

• #next_ex : NextError | Packet

  calls pcap_next_ex that reads the next packet and returns a success/failure indication.

• #set_promisc(flag : Bool)
• #setfilter(filter : String, optimize : Int32 = DEFAULT_OPTIMIZE, netmask : UInt32 = DEFAULT_NETMASK)

Constructor Detail

Class Method Detail

Instance Method Detail