if (!source.exhausted()) {
              TlsVersion.forJavaName(source.readUtf8LineStrict())
            } else {
              TlsVersion.SSL_3_0
            }
          handshake = Handshake.get(tlsVersion, cipherSuite, peerCertificates, localCertificates)
        } else {
          handshake = null
        }
      }
    }

    constructor(response: Response) {