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added cache to remember last pcapfile #12

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added cache to remember last pcapfile #12

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6 changes: 6 additions & 0 deletions pcap/pcap.go
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,8 @@ import (
"github.com/lemorz56/repcap/commons"
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I've updated #10

)

var lastOpenedFile string

func WritePacketDelayed(handle *pcap.Handle, buf []byte, ci gopacket.CaptureInfo) {
if ci.CaptureLength != ci.Length {
return
Expand Down Expand Up @@ -89,6 +91,9 @@ func Infos(filename string) (start, end time.Time, packets, size int) {
}

func LoadPcap(filename string) {
if filename == lastOpenedFile {
return
}
var err error
commons.PcapHandle, err = pcap.OpenOffline(filename)
if err != nil {
Expand All @@ -98,6 +103,7 @@ func LoadPcap(filename string) {
commons.Start = time.Now()
commons.Pkt = 0
commons.TsStart, commons.TsEnd, commons.Packets, commons.Size = Infos(commons.PcapFile)
lastOpenedFile = filename
}

func OpenDest(netIntf string) *pcap.Handle {
Expand Down