String() — netty Function Reference

Architecture documentation for the String() function in OpenSsl.java from the netty codebase.

Function java Buffer Allocators calls 1

Entity Profile

Buffer→ Allocators→ String() — netty Function Reference

Dependency Diagram

graph TD
  4c80a9b9_d3bd_4492_f102_5054f0e5347b["String()"]
  ed038636_6deb_9fdb_0fd6_26635e25e0e6["OpenSsl"]
  4c80a9b9_d3bd_4492_f102_5054f0e5347b -->|defined in| ed038636_6deb_9fdb_0fd6_26635e25e0e6
  79be9e3e_427d_2797_27cf_ea0babfbadb8["isAvailable()"]
  4c80a9b9_d3bd_4492_f102_5054f0e5347b -->|calls| 79be9e3e_427d_2797_27cf_ea0babfbadb8
  style 4c80a9b9_d3bd_4492_f102_5054f0e5347b fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

handler/src/main/java/io/netty/handler/ssl/OpenSsl.java lines 509–546

    static String checkTls13Ciphers(InternalLogger logger, String ciphers) {
        if (IS_BORINGSSL && !ciphers.isEmpty()) {
            assert EXTRA_SUPPORTED_TLS_1_3_CIPHERS.length > 0;
            Set<String> boringsslTlsv13Ciphers = new HashSet<>(EXTRA_SUPPORTED_TLS_1_3_CIPHERS.length);
            Collections.addAll(boringsslTlsv13Ciphers, EXTRA_SUPPORTED_TLS_1_3_CIPHERS);
            boolean ciphersNotMatch = false;
            for (String cipher: ciphers.split(":")) {
                if (boringsslTlsv13Ciphers.isEmpty()) {
                    ciphersNotMatch = true;
                    break;
                }
                if (!boringsslTlsv13Ciphers.remove(cipher) &&
                        !boringsslTlsv13Ciphers.remove(CipherSuiteConverter.toJava(cipher, "TLS"))) {
                    ciphersNotMatch = true;
                    break;
                }
            }

            // Also check if there are ciphers left.
            ciphersNotMatch |= !boringsslTlsv13Ciphers.isEmpty();

            if (ciphersNotMatch) {
                if (logger.isInfoEnabled()) {
                    StringBuilder javaCiphers = new StringBuilder(128);
                    for (String cipher : ciphers.split(":")) {
                        javaCiphers.append(CipherSuiteConverter.toJava(cipher, "TLS")).append(":");
                    }
                    javaCiphers.setLength(javaCiphers.length() - 1);
                    logger.info(
                            "BoringSSL doesn't allow to enable or disable TLSv1.3 ciphers explicitly." +
                                    " Provided TLSv1.3 ciphers: '{}', default TLSv1.3 ciphers that will be used: '{}'.",
                            javaCiphers, EXTRA_SUPPORTED_TLS_1_3_CIPHERS_STRING);
                }
                return EXTRA_SUPPORTED_TLS_1_3_CIPHERS_STRING;
            }
        }
        return ciphers;
    }