convertToCipherStrings() — netty Function Reference

Architecture documentation for the convertToCipherStrings() function in CipherSuiteConverter.java from the netty codebase.

Function java Buffer Allocators

Entity Profile

Buffer→ Allocators→ convertToCipherStrings() — netty Function Reference

Dependency Diagram

graph TD
  a6fae95d_bdc3_895d_0e4b_47df0b36a2c9["convertToCipherStrings()"]
  943634e0_77f3_02c9_2c51_68b03859df87["CipherSuiteConverter"]
  a6fae95d_bdc3_895d_0e4b_47df0b36a2c9 -->|defined in| 943634e0_77f3_02c9_2c51_68b03859df87
  style a6fae95d_bdc3_895d_0e4b_47df0b36a2c9 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

handler/src/main/java/io/netty/handler/ssl/CipherSuiteConverter.java lines 479–513

    static void convertToCipherStrings(Iterable<String> cipherSuites, StringBuilder cipherBuilder,
                                       StringBuilder cipherTLSv13Builder, boolean boringSSL) {
        for (String c: cipherSuites) {
            if (c == null) {
                break;
            }

            String converted = toOpenSsl(c, boringSSL);
            if (converted == null) {
                converted = c;
            }

            if (!OpenSsl.isCipherSuiteAvailable(converted)) {
                throw new IllegalArgumentException("unsupported cipher suite: " + c + '(' + converted + ')');
            }

            if (SslUtils.isTLSv13Cipher(converted) || SslUtils.isTLSv13Cipher(c)) {
                cipherTLSv13Builder.append(converted);
                cipherTLSv13Builder.append(':');
            } else {
                cipherBuilder.append(converted);
                cipherBuilder.append(':');
            }
        }

        if (cipherBuilder.length() == 0 && cipherTLSv13Builder.length() == 0) {
            throw new IllegalArgumentException("empty cipher suites");
        }
        if (cipherBuilder.length() > 0) {
            cipherBuilder.setLength(cipherBuilder.length() - 1);
        }
        if (cipherTLSv13Builder.length() > 0) {
            cipherTLSv13Builder.setLength(cipherTLSv13Builder.length() - 1);
        }
    }