func (this *ViaParser) Parse() (sh header.Header, ParseException error) {
lexer := this.GetLexer()
viaList := header.NewViaList()
// The first via header.
lexer.Match(TokenTypes_VIA)
lexer.SPorHT() // ignore blanks
lexer.Match(':') // expect a colon.
lexer.SPorHT() // ingore blanks.
for {
v := header.NewVia()
if ParseException = this.ParseVia(v); ParseException != nil {
return nil, ParseException
}
viaList.PushBack(v)
lexer.SPorHT() // eat whitespace.
if la, _ := lexer.LookAheadK(0); la == ',' {
lexer.ConsumeK(1) // Consume the comma
lexer.SPorHT() // Ignore space after.
}
if la, _ := lexer.LookAheadK(0); la == '\n' {
break
}
}
lexer.Match('\n')
return viaList, nil
}
/** Set A list of via headers.
*@param - a list of via headers to add.
*/
func (this *SIPMessage) SetVia(viaList *header.ViaList) {
vList := header.NewViaList()
for it := viaList.Front(); it != nil; it = it.Next() {
via := it.Value.(*header.Via)
vList.PushBack(via)
}
this.SetHeader(vList)
}