DnsQuery() — netty Function Reference

Architecture documentation for the DnsQuery() function in DnsMessageUtil.java from the netty codebase.

Function java ProtocolCodecs DNS calls 2

Entity Profile

ProtocolCodecs→ DNS→ DnsQuery() — netty Function Reference

Dependency Diagram

graph TD
  8dc59587_227c_942e_5028_ade5caa735cd["DnsQuery()"]
  712b890c_041c_4773_effc_f02cf18d95ab["DnsMessageUtil"]
  8dc59587_227c_942e_5028_ade5caa735cd -->|defined in| 712b890c_041c_4773_effc_f02cf18d95ab
  653d5923_50fd_330d_32e5_6507eb45871d["decodeQuestions()"]
  8dc59587_227c_942e_5028_ade5caa735cd -->|calls| 653d5923_50fd_330d_32e5_6507eb45871d
  2776da83_145d_0d0c_7295_37085f5080a6["decodeRecords()"]
  8dc59587_227c_942e_5028_ade5caa735cd -->|calls| 2776da83_145d_0d0c_7295_37085f5080a6
  style 8dc59587_227c_942e_5028_ade5caa735cd fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

codec-dns/src/main/java/io/netty/handler/codec/dns/DnsMessageUtil.java lines 184–203

    static DnsQuery decodeDnsQuery(DnsRecordDecoder decoder, ByteBuf buf, DnsQueryFactory supplier) throws Exception {
        DnsQuery query = newQuery(buf, supplier);
        boolean success = false;
        try {
            int questionCount = buf.readUnsignedShort();
            int answerCount = buf.readUnsignedShort();
            int authorityRecordCount = buf.readUnsignedShort();
            int additionalRecordCount = buf.readUnsignedShort();
            decodeQuestions(decoder, query, buf, questionCount);
            decodeRecords(decoder, query, DnsSection.ANSWER, buf, answerCount);
            decodeRecords(decoder, query, DnsSection.AUTHORITY, buf, authorityRecordCount);
            decodeRecords(decoder, query, DnsSection.ADDITIONAL, buf, additionalRecordCount);
            success = true;
            return query;
        } finally {
            if (!success) {
                query.release();
            }
        }
    }