Package ipfix implements an IPFIX (RFC 5101) parser and interpreter.

Input data from an io.Reader or a []byte is parsed and chunked into messages. Template management and the standard IPFIX types are implemented so a fully parsed data set can be produced. Vendor fields can be added at runtime.

To read an IPFIX stream, create a Session and then use ParseBuffer to parse data coming from a single UDP packet or similar.

var conn net.PacketConn // from somewhere
buf := make([]byte, 65507) // maximum UDP payload length
s := ipfix.NewSession()
for {
    n, _, err := conn.ReadFrom(buf)
    // handle err
    msg, err := s.ParseBuffer(buf[:n])
    // handle msg and err
}

To interpret records for correct data types and field names, use an interpreter:

i := ipfix.NewInterpreter(s)
var fieldList []ipfix.InterpretedField
for _, rec := range msg.DataRecords {
    fieldList = i.InterpretInto(rec, fieldList[:cap(fieldList)])
    // handle the field list
}

To add a vendor field to the dictionary so that it will be resolved by Interpret, create a DictionaryEntry and call AddDictionaryEntry.

e := ipfix.DictionaryEntry{
    Name: "someVendorField",
    FieldId: 42,
    EnterpriseId: 123456,
    Type: ipfix.Int32
}
i.AddDictionaryEntry(e)

The MIT license.

See the documentation.