private SSLEngineResult doOp()

in ext/puma_http11/org/jruby/puma/MiniSSL.java [216:258]
35 lines of code
8 McCabe index (conditional complexity)

  private SSLEngineResult doOp(SSLOperation sslOp, MiniSSLBuffer src, MiniSSLBuffer dst) throws SSLException {
    SSLEngineResult res = null;
    boolean retryOp = true;
    while (retryOp) {
      switch (sslOp) {
        case WRAP:
          res = engine.wrap(src.getRawBuffer(), dst.getRawBuffer());
          break;
        case UNWRAP:
          res = engine.unwrap(src.getRawBuffer(), dst.getRawBuffer());
          break;
        default:
          throw new IllegalStateException("Unknown SSLOperation: " + sslOp);
      }

      switch (res.getStatus()) {
        case BUFFER_OVERFLOW:
          // increase the buffer size to accommodate the overflowing data
          int newSize = Math.max(engine.getSession().getPacketBufferSize(), engine.getSession().getApplicationBufferSize());
          dst.resize(newSize + dst.position());
          // retry the operation
          retryOp = true;
          break;
        case BUFFER_UNDERFLOW:
          // need to wait for more data to come in before we retry
          retryOp = false;
          break;
        default:
          // other cases are OK and CLOSED.  We're done here.
          retryOp = false;
      }
    }

    // after each op, run any delegated tasks if needed
    if(engine.getHandshakeStatus() == HandshakeStatus.NEED_TASK) {
      Runnable runnable;
      while ((runnable = engine.getDelegatedTask()) != null) {
        runnable.run();
      }
    }

    return res;
  }