private static ImmutableList<ConnectionSpec> createConnectionSpecs(boolean enableGcmCipherSuites) { return ImmutableList.of( new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS) .tlsVersions(TlsVersion.TLS_1_2) .cipherSuites(enableGcmCipherSuites ? CipherSuites.allCipherSuites() : CipherSuites.fastCipherSuites()) .build(), ConnectionSpec.CLEARTEXT); }