![](http://www.gnu-darwin.org/hexley-gd-sm.png)
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Capture
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Packet Capture Object
Super Class:
Object
Included Modules:
Enumerable
Class Methods:
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open_live(device[, snaplen[, promisc[, to_ms]]])
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Open specified device and return Capture
object.
Default value for snaplen,
promisc and to_ms are 68 octets,
true and 1000 milliseconds.
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open_offline(filename)
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Open filename and return Capture object.
Methods:
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close
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Close Capture object.
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datalink
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Return an integer representing data-link type.
(e.g. DLT_EN10MB )
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dispatch([count]) {|packet|...}
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Iterate over each packet. The argument given to the block
is an instance of Packet or its sub-class.
count specifies the maximum number of packets to
process. a count of -1 processes all the packets
received in one buffer. a count of 0 processes all
packets until an error occurs, EOF is reached, or the read
times out.
Default of count is -1.
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each_packet([count]) {|packet|...}
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each([count]) {|packet|...}
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loop([count]) {|packet|...}
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Iterate over each packet. The argument given to the block
is an instance of Packet or its sub-class.
count specifies the maximum number of packets to
process. A negative count processes packets forever
or until EOF is reached. Default of count is -1.
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snapshot
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snaplen
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Return the snapshot length.
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setfilter(filter[, optimize])
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Specify filter as packet filter.
filter can be a string or a Filter object.
optimize controls whether optimization is performed.
Default of optimize is true .
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stats
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Return a Struct which represents packet statistics.
This struct has following members.
recv - number of received packets
drop - number of dropped packets
fukusima@goto.info.waseda.ac.jp
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