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Julien Bernard commented on VALIDATOR-483: ------------------------------------------ Thank you [~ggregory], This answers my concern about whether such PR would have a chance to be accepted and gives useful information on how this should be achieved. > DomainValidator conversion to ASCII uses an obsoleted standard > -------------------------------------------------------------- > > Key: VALIDATOR-483 > URL: https://issues.apache.org/jira/browse/VALIDATOR-483 > Project: Commons Validator > Issue Type: Bug > Components: Routines > Environment: Java openjdk 11 on Linux > Reporter: Julien Bernard > Priority: Major > > DomainValidator uses java.net.IDN for its conversion to ASCII which is based > on RFC3490 (IDNA 2003) that is obsoleted by RFC 5891 (IDNA 2008). > An external library such as ICU4J may be used for an IDNA 2008 compliant > conversion: > {code:java} > int flags = IDNA.CHECK_BIDI > | IDNA.CHECK_CONTEXTJ > | IDNA.CHECK_CONTEXTO > | IDNA.NONTRANSITIONAL_TO_ASCII > | IDNA.USE_STD3_RULES; > IDNA idna = IDNA.getUTS46Instance(flags); > IDNA.Info info = new IDNA.Info(); > StringBuilder domainAscii = new StringBuilder(); > idna.nameToASCII(domain, domainAscii, info); > // check error with info.hasErrors() {code} > -- This message was sent by Atlassian Jira (v8.20.10#820010)