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Code Issues Releases Wiki Activity

Fix BPF filter when listen on all interfaces

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It was caching bpf filter of first interface
This commit is contained in:
Leonid Bugaev
2021-07-06 19:13:48 +03:00
parent 92c63de753
commit a727ade006
1 changed files with 7 additions and 5 deletions
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capture/capture.go
+7 -5
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@@ -284,14 +284,16 @@ func (l *Listener) PcapHandle(ifi pcap.Interface) (handle *pcap.Handle, err erro
if err != nil {
return nil, fmt.Errorf("PCAP Activate device error: %q, interface: %q", err, ifi.Name)
}
if l.BPFFilter == "" {
l.BPFFilter = l.Filter(ifi)
bpfFilter := l.BPFFilter
if bpfFilter == "" {
bpfFilter = l.Filter(ifi)
}
fmt.Println("Interface:", ifi.Name, ". BPF Filter:", l.BPFFilter)
err = handle.SetBPFFilter(l.BPFFilter)
fmt.Println("Interface:", ifi.Name, ". BPF Filter:", bpfFilter)
err = handle.SetBPFFilter(bpfFilter)
if err != nil {
handle.Close()
return nil, fmt.Errorf("BPF filter error: %q%s, interface: %q", err, l.BPFFilter, ifi.Name)
return nil, fmt.Errorf("BPF filter error: %q%s, interface: %q", err, bpfFilter, ifi.Name)
}
return
}